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Operator
Good afternoon.
My name is Derek, and I will be your conference facilitator today for Amgen's First Quarter Financial Results Conference Call.
(Operator Instructions)
I would now like to introduce Arvind Sood, Vice President of Investor Relations.
Mr. Sood, you may now begin.
Arvind Sood - VP of IR
Thanks, Derek.
Good afternoon, everybody.
So first of all, thank you for taking the time to participate in our conference call today to review our operating performance for the first quarter of 2017.
Before we begin, I would like to extend a warm welcome to those who are new in their coverage of Amgen, including of Umer Raffat of ISI Evercore and Carter Gould of UBS.
Each of us very much look forward to working with you.
We made a lot of progress during the quarter both in our commercial execution as well as our R&D efforts, so I'm anxious to get started.
I would urge you to listen for specific themes, including volume-driven growth and operational expense management as you hear our senior leaders describe our performance.
Our Chairman and CEO, Bob Bradway, will lead the call today with a brief report on how we are executing against our long-term strategy for growth.
Following Bob, our CFO, David Meline, will review our financial results for the first quarter and our outlook for the remainder of 2017.
Our Head of Global Commercial Operations, Tony Hooper, will then discuss our product performance during the quarter; followed by our Head of R&D, Sean Harper, who will provide a pipeline update.
And I'll give you a heads-up right now that we have a lot to discuss on our R&D efforts.
As is customary for us, we will use slides for our presentation today, which have been posted on our website and a link was sent to you separately by e-mail.
We plan on using non-GAAP financial measures in today's presentation to provide information which may be useful in understanding our ongoing business performance.
However, these non-GAAP financial measures should be considered together with GAAP results, and reconciliations of these measures are available in the schedules accompanying today's press release, our Form 8-K and also on the Investor Relations section of our website.
Just a reminder that some of the statements made during the course of our presentation are forward-looking statements, and our 2016 10-K and subsequent filings identify factors that could cause our actual results to differ materially.
So with that, I would like to turn the call over to Bob.
Bob?
Robert A. Bradway - Chairman and CEO
Okay.
Thank you, Arvind, and thank you all for joining our call.
We had an active first quarter at Amgen.
And before talking about our financial results, I want to put the events of the first 90 days of the year in context because I think they underscore the reasons why we're confident about achieving our long-term objectives for growth.
As you know, we're focused on 6 therapeutic categories, and during the quarter, we achieved important milestones in each of them.
Core to our strategy is a commitment to differentiated innovation.
We aim for products with a big effect size, in areas where the unmet need is high.
That's what we feel we'll be required to succeed over the long term in this industry.
In our cardiovascular portfolio, we strongly believe Repatha represents one such product.
As all of you know, cardiovascular disease poses by far the biggest health burden on society today.
And our outcomes data demonstrated unequivocally that Repatha can play an important role in reducing that burden.
And the data also showed, to my mind, that the rate of cardiovascular events, which approached 10% per year in the optimized statin arm of the trial, is still far too high without Repatha.
Against this backdrop, we expect Repatha to be an important product in the fight against cardiovascular disease and increasingly expect physicians, patients and other stakeholders to recognize that rejecting an innovative drug for high-risk patients, which demonstrated beyond 12 months a 35% reduction in the risk of heart attack, a 24% reduction in the rate of stroke and a 28% reduction in the rate of revascularizations, is simply inappropriate.
The practice of medicine won't change overnight but it won't stall either.
Not in the face of an innovative new therapy that can prevent hundreds of thousands of otherwise needless and tragic events.
In the U.S. alone, cardiovascular disease costs our society in excess of $600 billion a year, and without meaningful innovation like Repatha to change the trajectory of this disease, those costs will exceed $1.2 trillion by 2035.
We believe it's right to embrace innovation not only for patients but also for society.
Economic study after study has shown that society benefits financially from adopting therapies like Repatha.
Nonetheless, we recognize the access challenges of the day and that's why we have and will continue to offer innovative, value-based contracts to help build a bridge between the medical need and the affordability concerns for patients and payers.
In addition to novel biology, intellectual property is another source of differentiation for our innovation.
And we were obviously gratified this quarter by the Delaware Court's support for our position on Repatha, and we now stand ready for the Appeals Court to hear the case in June.
In oncology, there's no better standard for differentiated innovation than achieving an overall survival advantage for patients.
In the first quarter, we achieved that; with both KYPROLIS and BLINCYTO.
The BLINCYTO results are encouraging for patients with acute lymphoblastic leukemia, obviously, but more broadly, they're encouraging as validation for the whole approach of our immuno-oncology BiTE platform.
Perhaps because we're the only company with an advanced BiTE platform, this area is not as well understood in the investment community as other areas of immuno-oncology, but we're excited about the potential of our BiTEs and have several programs moving swiftly in our pipeline.
We look forward to sharing data as they become available from these efforts.
The overall survival data for KYPROLIS -- achieved at an interim analysis in relapsed multiple myeloma patients -- are also very important and timely.
Having established superiority versus Velcade, we expect this data will drive increased share for KYPROLIS, particularly in the second line, and will also be helpful for reimbursement considerations.
Also in multiple myeloma this quarter, we achieved positive results for XGEVA.
And subject to regulatory approvals, we look forward to being able to offer this therapy to multiple myeloma patients, many of whom are at risk of skeletal-related events such as those prevented by XGEVA.
Bone health remains an area of high unmet medical need as still millions of women, at high risk for postmenopausal fractures remain untreated.
Reflecting on the number of postmenopausal fractures, the World Health Organization called this a global epidemic.
Prolia's ongoing significant volume-driven growth, 21% in the quarter, attests to the value of differentiated innovation in this field.
Already the leader in bone health, we expect EVENITY will strengthen our hand.
While we await both further clinical data and regulatory reviews, Sean will describe the encouraging results that we received this quarter for the 3-year follow-up from the FRAME study.
While discussing our strategy of differentiated innovation, I also want to address our newest therapeutic area, which is, of course, neuroscience, where we are in the threshold of a novel, first-in-class therapy for migraine sufferers.
We had the opportunity to present our registration-enabling data at the American Academy of Neurology this week.
And not surprisingly, experts in the field were excited about erenumab in an area where there's otherwise precious little to offer those suffering from episodic and chronic migraine.
I've seen some headlines asking whether our expanded collaboration with Novartis signals a waning of our enthusiasm for this opportunity.
The answer is: Absolutely not.
We have high hopes for erenumab, and at the same time, we recognize this is a new therapeutic category for us and will likely be a competitive race.
So we were very pleased that Novartis, already our collaborator in international markets, shared our enthusiasm for this first-in-class molecule in the U.S. and our determination to resource this product to win.
With their decades of experience in neurology and a shared commitment to serve those suffering for migraine, we're excited about our expanded collaboration.
When it comes to strategy, you've also heard us talk about life-cycle management, especially for our legacy franchises.
The Neulasta Onpro launch is now widely seen as one of the most effective examples of this, with market shares now in excess of 50% in the U.S.
In nephrology, we announced earlier this quarter an extension of our partnership with DaVita for EPOGEN.
And of course, we also gained approval for Parsabiv in the U.S. As the established leader in nephrology therapeutics, we continue to look for ways to serve patients with kidney disease and expect this to remain an important franchise for us.
As you know, an element of our strategy includes developing a portfolio of biosimilars, and I'm glad that we made that commitment as I think there will be a robust market for these products.
While our portfolio of 10 biosimilars is progressing across the board, the highlight for the quarter was in inflammation, where we received EU approval to go along with our U.S. approval of AMGEVITA, our biosimilar to HUMIRA.
The first steps in building out this business are to establish biosimilarity and gain registration, and obviously, we have done that now for an important molecule in the biggest markets.
The next step is to navigate the IP landscape and the process for that is underway.
Over the past couple of years, we've talked on these calls about our ongoing transformation efforts.
We committed to a company-wide transformation -- real, meaningful change designed to make us more competitive, improve our operating margins and ensure that we would be in a strong position to return capital to our shareholders during this period of increasing competition for our legacy franchises and, while launching 9 innovative products, maintaining our investment in innovation, advancing a biosimilars portfolio and expanding our international presence from 50 to over 100 countries.
We have asked a lot of our staff and they have delivered.
In our past results, you've seen our steady progress, and you see it once again this quarter; where our margins have grown, we delivered 9% earnings per share growth.
Looking forward, our orientation is long-term growth with volume-driven products, and we think we can deliver that across our focused therapeutic franchises.
But we're also set on managing the business tightly to deliver in the short and medium term too.
You should see this in our track record, and that's what you see in this quarter as well.
Our balance sheet and cash flows are strong, and we're looking for investment opportunities, albeit with the determination to add value for our shareholders, not just someone else's.
Given valuations across many targets in the sector at the moment, that's challenging.
But we'll remain patient and discriminating when it comes to M&A.
We've long advocated the need for corporate tax reform.
If innovative U.S. companies are to remain competitive, we need a level tax playing field.
We don't have one now but we're hopeful this administration will deliver that in 2017.
Obviously, we think such change will improve our flexibility for capital allocation.
I'm taking a bit longer than usual on this call, but with all the events in the first quarter, I want to make sure to reiterate that we're investing in long-term opportunities, managing the business tightly and are poised to capitalize on investment opportunities which might arise.
With that, let me once again thank our staff for their engagement with our mission, and then turn to David.
Thank you.
David W. Meline - CFO and EVP
Okay.
Thanks, Bob.
We are pleased with our solid overall results and earnings growth again in the first quarter as our transformation efforts enabled progress in an environment of strong competition and portfolio transition.
We also were encouraged by our 7% volume growth in Europe, reflecting the value of our innovative products in a market where we have experienced similar competition in portfolio transition for a number of years.
Turning to the financial results on Page 6 of the slide deck.
Worldwide revenues at $5.5 billion in the first quarter are flat year-over-year, excluding the impact of foreign exchange and are 1% lower on a reported basis, including FX.
Worldwide product sales at $5.2 billion in the first quarter are flat year-over-year, excluding the impact of foreign exchange and are 1% lower on a reported basis including FX, as strong unit demand for our newer products was offset by declines in our mature brands.
Other revenues at $265 million decreased $23 million versus the first quarter of 2016.
Non-GAAP operating income at $3 billion, grew 5% from prior year.
Non-GAAP operating margin improved by 3 points to 57.6% for the quarter, reflecting continued favorable expense impacts from our transformation initiatives across all operating expense categories and the expiry of the Enbrel residual royalty payment in Q4 of 2016.
As in prior years, our operating margin is expected to be lower in the remaining quarters of the year, driven by the timing of expenses.
On an overall full-year basis, we expect another year of strong operating margins, driven by tight operational expense management.
On a non-GAAP basis, cost of sales as a percent of product sales improved by 0.4 points to 13.1%, driven by manufacturing efficiencies, partially offset by product mix.
Research and development expenses at $748 million were down 13% year-over-year, driven by a first quarter 2016 payment related to a third-party collaboration agreement, lower spending required to support certain later-stage clinical programs and continued benefits from our transformation initiatives.
Research and development as a percent of product sales at 14.4% is lower in Q1; consistent with the previous years.
Going forward, research and development expense as a percent of product sales is expected to normalize around 2016 levels.
SG&A expenses decreased 6% on a year-over-year basis due to expiry of the Enbrel residual royalty payment, partially offset by increased investments in new product launches.
In aggregate, non-GAAP operating expenses decreased 7% year-over-year and remain on track to meet or exceed our 2018 commitment of $1.5 billion in transformation savings while investing to build the business globally, support new product launches and invest in the long-term pipeline for the business.
Other income and expenses were a net $131 million expense in Q1.
This is favorable by $13 million on a year-over-year basis, primarily driven by higher cash balances.
The non-GAAP tax rate was 18.5% for the quarter, a 0.4-point decrease versus the first quarter of 2016.
This decrease reflects favorable changes in the geographic mix of earnings, partially offset by a smaller benefit from share-based compensation tax expenses compared to the first quarter of last year.
As you may recall, this benefit is a result of the adoption of accounting standard update 2016-9, requiring these tax impacts to be recognized on the income statement versus the balance sheet.
The benefit of this adoption contributed approximately $0.06 to our non-GAAP earnings per share in this quarter compared to $0.09 in the first quarter of 2016.
Non-GAAP net income increased 6% and non-GAAP earnings per share increased 9% year-over-year for the first quarter, to $3.15 per share.
Turning next to cash flow and the balance sheet on Page 7. Free cash flow was $2.2 billion for the quarter, an increase of $400 million over last year.
This increase was primarily driven by higher profitability as well as timing impacts of income tax payments to the IRS.
We continue to provide significant cash returns to shareholders, consistent with our commitments, as we deployed $0.6 billion to repurchase 3.4 million shares at an average of $163 per share and are on track to achieve total share repurchase for this year in the range of $2.5 billion to $3.5 billion, as previously communicated.
Additionally, our first quarter dividend increased to $1.15 per share, an increase of 15% over last year.
Cash and investments totaled $38.4 billion, an increase of approximately $3.7 billion from the first quarter of last year.
This increase reflects continued solid net cash flow generation.
Our debt balance stands at $34.1 billion as of March 31, carrying a weighted average interest rate of 3.8% and an average maturity of 12 years.
Turning to the outlook for the business for 2017 on Page 8. Overall, our 2017 revenue guidance remains unchanged at $22.3 billion to $23.1 billion.
Our first quarter volume and price performance was in line with our plans as we experienced a solid contribution from our newer products while managing the impact of competition against the balance of the portfolio.
Revenue guidance also reflects the potential impact of the Repatha litigation and improving access for appropriate patients as a result of the positive Repatha cardiovascular outcomes data.
Finally, our guidance takes into account potential biosimilar competition against Neulasta commencing as soon as the fourth quarter of this year.
With regard to our non-GAAP earnings per share guidance, we are raising the outlook to $12.00 to $12.60, reflecting our overall solid Q1 performance.
In addition, our non-GAAP tax rate guidance remains unchanged at 18.5% to 19.5%, and we expect capital expenditures of approximately $700 million this year.
As previously stated, our 2017 guidance ranges are based on application of existing laws, including the Affordable Care Act and the current U.S. tax code, as well as current interpretation of the required notice period prior to commercial marketing of a biosimilar under the BPCIA.
We will continue to update guidance going forward for changes in these factors and any other business updates.
Finally, consistent with our 2017 outlook, we remain confident we will meet or exceed the commitments provided for the 2014 to '18 period including double-digit non-GAAP EPS growth, non-GAAP operating margin improvement from 38% to 52% to 54%, $1.5 billion of transformation savings and return to shareholders of at least 60% of non-GAAP net income on average during the period.
This concludes the financial update.
I now turn the call over to Tony.
Anthony C. Hooper - EVP of Global Commercial Operations
Thanks, David, and good afternoon, everyone.
You'll find our product sales starting on Slide #10.
Our business performance is shifting to a more volume-driven growth as we launch innovative products targeting large patient populations with unmet medical needs.
Whilst our focus is on innovation, we've also executed effective life-cycle management strategies with some of our legacy brands which are facing potential new competition.
Although U.S. revenues declined 1%, our ex-U.
S. growth was 3%, excluding the impact of foreign exchange, fueled by a 7% volume growth.
I'll now discuss our specific product performance and will structure my comments by therapeutic area.
Let me begin with our bone health franchise.
Prolia, a great example of one of our innovative products, has realized robust volume growth during the quarter with most of its 21% year-over-year sales growth driven by unit volume.
Prolia, with a strong value proposition, is uniquely positioned in postmenopausal osteoporosis as the leading branded product on the market.
We will continue to invest in Prolia to reach a greater number of patients whilst reinforcing adherence for those already taking Prolia to ensure they continue to realize its benefits.
Overall, we expect Prolia will remain a significant growth driver as the approximately 850,000 U.S. patients on Prolia therapy only represent about 20% of patients presently being treated for postmenopausal osteoporosis.
We also look forward to expanding our bone health franchise with romosozumab, our innovative bone-building molecule, which we now have a trade name, EVENITY.
In conjunction with our partners at UCB, we are preparing for a U.S. launch in advance of the July 19 PDUFA date.
As Bob pointed out, having the ability to co-position EVENITY and Prolia sequentially will improve our ability to better treat this large patient population.
With thousands of high-risk postmenopausal osteoporosis patients, such as those who have fractured, we have a proven therapeutic strategy with EVENITY to first build strong, new bone in patients with 12 months of treatment, followed by Prolia for proven continued fracture risk reduction.
Oncology is another area that is benefiting from volume growth with our recently launched products, and let me start with KYPROLIS.
KYPROLIS realized 23% year-on-year growth during the quarter, and most of this growth was volume-driven, including our international markets.
As you know, KYPROLIS was indicated in the U.S. for second and third-line multiple myeloma.
In second line, triplet regimens are used in approximately 1/3 of patients, and despite new entrants, we've been able to achieve about 50% market share for new patient starts in this segment.
The other 2/3 of second-line patients are treated with doublet regimens.
And recent data from our ENDEAVOR study demonstrated that KYPROLIS plus dexamethasone improved overall survival by 21% or nearly 8 months when compared to Velcade plus dexamethasone.
Improving overall survival is the gold standard measurement when treating cancer.
This data clearly establishes KYPROLIS as the proteasome inhibitor of choice and will be a compelling differentiator in our strategy to displace Velcade in this setting.
KYPROLIS is well accepted in large academic centers that treat high numbers of multiple myeloma patients, and we are now focusing on extending KYPROLIS' reach into the community oncology practices.
Despite the introduction of new competing products in the U.S., we've also regained share in new third-line patients over the last few quarters.
We expect proteasome inhibition to be foundational therapy in multiple myeloma for many years to come and are focused on growing in second and third lines of therapy with plans to expand KYPROLIS' use in newly diagnosed patients.
Outside the U.S., we continue to enter into new markets and secure reimbursement with the benefit of the new KYPROLIS overall survival data.
XGEVA grew 6% year-over-year, mostly due to volume as we continue to emphasize its clinical benefits.
We look forward to having the positive multiple myeloma study data added to our label.
This will expand the patient population eligible for XGEVA treatment.
Both Nplate and Vectibix saw another good quarter with volume growth of 9% and 6%, respectively.
Neulasta sales increased 2% year-over-year as we continue to see a small decline in the use of myelosuppressive chemotherapeutic agents.
The first quarter also benefited from accounting estimate changes due to lower Onpro returns, underscoring that Onpro delivery is working better than initially assumed.
We continue to drive increasing adoption and Onpro now represents over 50% share of all Neulasta purchases.
This has been a great example of a very successful life-cycle management strategy.
And as David explained earlier, we expect minimal impact in 2017 from potential long-acting biosimilar competition.
I'd also note that the first quarter has historically benefited from heavier purchasing by certain end customers, and we estimate this benefit in quarter 1 to be about $50 million, which we expect to reverse in quarter 2.
For NEUPOGEN, the impact of competition was in line with prior performance.
We exited the quarter retaining 46% share of the short-acting market in the U.S. We expect these competitive dynamics to continue over the course of 2017.
Moving now to Enbrel.
I would start by emphasizing that we see no trend break versus 2016, and I will go through Enbrel carefully and in some detail because I don't want you to misinterpret long-term dynamics based on some quarter 1 peculiarities.
Before getting into quarterly performance, I'd like to highlight that we utilize IMS prescription data to analyze the business.
Like many of you, we noticed a slowdown in the first quarter IMS scrips.
Those has implications for our views on segment demand and end-user inventory levels.
We've been in close contact with IMS, and they agree that the first quarter prescription data appears soft in several specialty product categories, including rheumatology and dermatology.
As a matter of fact, on a year-over-year basis, unit growth in rheumatology appeared to slow from 9% in the first quarter of 2016 to 2% in this quarter.
And from 25% to 9% in the dermatology segment for the same period.
IMS attributed the softness to a combination of several factors, including the number of shipping days in the fourth quarter 2016 versus the first quarter 2017; the impact of patient out-of-pocket costs including deductibles; and the Part D donut hole for the start of a new year, as well as the potential increasing use of 90-day prescriptions.
This is also consistent with our view of the market.
We noted our expectations that the 2016 trends will continue into 2017.
On a quarter-over-quarter basis, our share declined 1 percentage point to 32% in rheumatology and declined 2 percentage points in dermatology to 15%; in line with 2016 share trends.
As for the end-user inventory, we previously said that we expected quarter 1 reductions due to the quarter 4 2016 $150 million excess inventory.
Based on the IMS data, we calculated an approximate $30 million reduction in inventory levels for this quarter.
And therefore, we expect the remainder to be used up during the course of the year.
Obviously, the accuracy of the IMS data has implication for our understanding of both unit demand dynamics and end-user inventory.
Consistent with our previous guidance, net selling price had a minimal impact on year-over-year sales growth during quarter 1.
On a quarter-on-quarter basis, we have seen increased commercial patient co-pay assistance impacting net selling price, which is likely a function of higher patient out-of-pocket costs.
This impact typically tapers off over the remainder of the year, and our view on net selling price in 2017 is unchanged.
We are optimistic about our rebound in both Enbrel and Enbrel segment growth in future quarters as IMS prescription data from the more recent weeks shows improvement versus at the beginning of the year in both rheumatology and dermatology.
So in summary, the quarter 1 results likely reflect a temporary marketplace issue, and we believe the long-term dynamics are intact and in line with our prior expectations.
There remains a substantial number of patients for which Enbrel is the best treatment option, given its competitive efficacy and long-term safety profile.
We will continue to invest in Enbrel to enhance its value, to bring to patients and providers.
Given its long-term period of patent protection, Enbrel will continue to be a significant cash flow generator for Amgen for many years to come.
Turning now to our nephrology products, beginning with Aranesp.
On a worldwide basis, Aranesp declined 4% year-over-year.
In the U.S., it increased by 7% including the conversion from EPOGEN at numerous independent and midsize dialysis centers.
This conversion was substantially completed by quarter 3 of 2016, with Aranesp now representing over 85% of the ESA usage.
Performance outside the U.S. was negatively impacted by foreign exchange as well as the timing of tenders in certain markets.
Now to EPOGEN.
As previously disclosed, we recently renegotiated our supply agreement with DaVita.
DaVita represents about 1/3 of the U.S. dialysis market and they will continue to predominantly purchase EPOGEN through 2022.
In exchange for longer supply certainty, we made concessions on net selling prices, which impacted the quarter-on-quarter results.
Also, as David mentioned, we do not expect a material impact to our ESA business in 2017 from a short-acting biosimilar competitor.
Sensipar increased 15% year-over-year, driven by a combination of net selling price and volume growth.
Parsabiv, our innovative new calcimimetic delivered intravenously, is now approved in both the U.S. and Europe, and we are working with CMS to secure a reimbursement mechanism in the U.S.
Let me now turn to our cardiovascular franchise and Repatha.
Let me first address the quarter-on-quarter growth, which might look a little strange.
Quarter 4 2016 was slightly inflated due to the booking of a Middle East tender, which was not repeated in quarter 1 this year.
With closer examination of the data, you'll see that we recorded positive volume growth in the U.S. of 14% and 28% in Europe.
In the U.S., we achieved segment share of 64% in quarter 1 for new-to-brand patients and briefly touched on 70% as we exited the quarter.
In Europe, we exited 2016 with 56% segment share.
Our U.S. formulary coverage has greatly improved over last year, especially Medicare Part D, where we have almost tripled the number of lives covered.
Results of the Repatha cardiovascular outcome study that were presented at the American College of Cardiology last month, are clearly a game changer for cardiovascular patients; showing significant reductions in MIs and strokes.
We also shared our analysis on the economic value of Repatha at the ACC.
This calculation used standard peer-reviewed methodology using real-world event rates and imputed mortality benefit from the meta-analysis of previous studies with CTTC relationship, and concluded that prices in the market today are well within the value-based price range.
Naturally, this calculation is based on average net selling price and not the list price.
Since the ACC, we've been engaging with payers in the U.S. and across the world on Repatha's clinical data and economic value.
We are in active discussions with all of the large U.S. PBMs and payers, and they recognize the importance of Repatha's outcome data to patients.
We are focused on reducing barriers and improving processes to make it easier for a physician to prescribe Repatha and for patients to get access to this important therapy.
We expect payers will start changing utilization management criteria and processes over the coming months.
Several independent groups have studied the access situation and have concluded that current access barriers are inappropriate and potentially harmful to patients.
As pointed out in the recent publication by the Partnership for Health Analytic Research, or PHAR, it started with the irresponsible prediction of healthcare cost prior to FDA approval of the PCSK9 inhibitor class.
These overestimates resulted in onerous restrictions and lack of patient access from the beginning.
At the ACC last month, 2 research teams, including one from Duke, presented data showing that patients' clinical characteristics were no different between those denied reimbursement for PCSK9 versus those approved, showing that payer utilization management processes were nothing but an arbitrary barrier to access.
And just today, the FH Foundation published a peer-reviewed paper in the journal Circulation showing that 63% of FH patients and 58% of established ASCVD patients had their PCSK9 inhibitor claims rejected despite having sub-optimal LDL-C levels and being on moderate to high-intensity statins.
Cardiovascular disease continues to be the #1 cause of death and disability in the world.
And in a moment, Sean will remind us of the incredible outcome value that Repatha has demonstrated by its ability to reduce both MI and strokes.
This data, together with a groundswell of cardiology and patient pressure will result in increasing levels of patient access.
Repatha will continue to grow for many years to come, making it one of the largest innovative assets Amgen has brought to market.
Let me conclude by saying a few words about erenumab and our recently announced expanded collaboration with Novartis.
We believe that partnering with Novartis, a company that is well positioned in the neuroscience space, will enable us to maximize the launch of this first-in-class product.
We believe that erenumab will offer a strong value proposition to millions of patients suffering from chronic or episodic migraines.
Let me close by thanking all of the Amgen staff that worked so hard and tirelessly to get our important products to patients around the world.
Sean?
Sean E. Harper - EVP of Research and Development
Thanks, Tony, and good afternoon.
I'll begin my comments today with Repatha.
As you know, we presented the results of our Repatha cardiovascular outcome study at the American College of Cardiology meetings in March with simultaneous publication in the New England Journal of Medicine.
This represented a major step on the path of getting this therapy to the patients who so desperately need it.
This study had several objectives.
First, to validate the PCSK9 mechanism with respect to cardiovascular outcomes.
Second, to establish the safety of reaching unprecedented low LDL levels.
Recall that 25% of patients on the Repatha arm had on-treatment LDLs below 19.
And third, to understand whether the linear relationship established by statins and ezetimibe between LDL and cardiovascular risk continues down to very low LDL levels as the human genetics had suggested.
The study gave clear, positive results on all of these objectives.
The results also validated our dosing approach of maximally inhibiting PCSK9 with Repatha, and that when it comes to LDL, as we begin to hear cardiologists coin at the ACC, "lowest is best."
Importantly, outcomes data from Pfizer's discontinued PCSK9 program were presented and also published in the New England Journal of Medicine, confirming the efficacy seen in our study and demonstrating that not all PCSK9 antibody therapies are the same with respect to off-target liabilities.
Now there's been a fair amount of speculation in the press and elsewhere about the magnitude of the risk reduction observed in our studies, so I'm going to spend a bit of time on the results.
We have found that the vast preponderance of experts in this field view this study as highly successful in terms of the observed effect size.
Essentially, the results are exactly as what would have been achieved had one been able to reduce LDL to the same degree with additional statin therapy, were it possible to do so without unacceptable toxicity.
Specifically, experts understand that the treatment lag that occurs in the first year of therapy, a phenomenon seen in all lipid-lowering trials in this type of population, represented a much larger proportion of the median time on therapy in our study, which was just over 2 years, versus the average 5.5-year-long statin study.
They also understand that adjusting appropriately for duration of therapy, the results line up extremely well with the Cholesterol Treatment Trialists' Collaboration, or CTTC meta-analysis.
When one looks at the prespecified landmark analysis for this chronic therapy after the first year when the treatment lag is over and the true chronic value of the therapy can be assessed accurately, the risk reductions in myocardial infarction, 35%; stroke, 24%; and revascularization, 28%, are quite impressive, particularly in the setting of such a remarkably clean safety profile.
Experts also understand why one should not have anticipated an impact on CV mortality in such a study, and I would refer those who are interested to an excellent editorial on this subject published recently in the Journal of Clinical Lipidology.
And to just remind us of the clinical reality here, many millions of patients, like those in our outcomes study have a high annual risk of CV events despite maximally tolerated statins and have no other therapeutic alternative to take their LDLs down to levels that significantly protect them from such events.
In fact, we were all surprised by the fact that despite optimized therapy with best standard of care, including high-intensity statins, patients in the placebo arm of our CV outcomes study had an annual event rate of almost 10%, which clearly demonstrates the unmet need here, as event rates in the real world are significantly higher than those seen in clinical trial settings.
Now one of our highest priorities is to ensure these results are reflected in the Repatha label as soon as possible, and we're targeting regulatory submissions by midyear.
I'd also note that the Repatha 420-milligram single-dose delivery option was recently approved in Europe.
Turning to oncology.
We completed XGEVA regulatory submissions in the U.S. and Europe for the prevention of skeletal-related events in multiple myeloma patients, providing a potential new treatment option for patients, many of whom are not able to avail themselves of alternative therapies due to renal insufficiency.
In multiple myeloma, we received the overall survival data from the ENDEAVOR study in relapsed or refractory patients, which confirmed the superiority of KYPROLIS plus dexamethasone over Velcade plus dexamethasone.
In fact, ENDEAVOR was the first head-to-head study to demonstrate a survival benefit versus a current standard of care regimen in this setting and we're preparing to submit these results to regulators as well.
We also remain on track to begin enrollment this quarter in our Phase III study of KYPROLIS in combination with Darzalex in relapsed or refractory multiple myeloma and also recently began enrolling a Phase Ib study of new formulations of Oprozomib.
Turning to our immuno-oncology programs, I'll begin with our BiTE platform.
We were very pleased that FDA granted BLINCYTO priority review for our recent sBLA that includes overall survival data from our Phase III study to support conversion from accelerated to full approval.
The application also includes new data in Philadelphia chromosome positive relapsed or refractory acute lymphoblastic leukemia, a small population with an area of significant unmet need.
We also continue to roll out our Phase II/III BLINCYTO program in diffuse large B-cell lymphoma, the most common form of high-grade non-Hodgkin's lymphoma.
We also have the opportunity in a recent American Association for Cancer Research annual meeting, to present preclinical data from some of our new BiTE programs, including half-life extended constructs.
We continue to make good progress with the investigation of IMLYGIC in combination with checkpoint inhibitors, and we'll be presenting the results of our Phase II study in combination with YERVOY at ASCO, as well as some very interesting human biomarker data at the Congress of the European Association of Dermato Oncology.
Finally in the early stage immuno-oncology pipeline, we're making progress in our Advaxis collaboration and have an investigational new drug application in place for a personalized neoantigen-targeted approach to cancer immunotherapy.
In our bone therapeutic area, our collaboration with UCB on EVENITY continues to advance, and we look forward to our July U.S. PDUFA date for the treatment of osteoporosis in postmenopausal women at increased risk of fracture.
Ahead of this, we expect the primary analysis of our active-controlled fracture study, ARCH, in postmenopausal women with osteoporosis in the near future.
I will remind you that the upcoming primary analysis will include the clinical fracture and vertebral fracture primary co-endpoints, as well as an interim analysis of the event-driven non-vertebral fracture study secondary endpoint.
If statistical significance is not achieved at this interim analysis, the study will continue until the final analysis some months later.
We designed ARCH in this manner to ensure adequate powering at the non-vertebral fracture endpoint.
I would also point out that compared to the placebo-controlled FRAME study, the ARCH study compares EVENITY followed by alendronate to antiresorptive therapy with alendronate throughout the study period.
These sequences are being assessed in a higher-risk population than our FRAME study, with all subjects in ARCH required to have prevalent fracture.
This was possible given the active comparator design, and we were not exposing these higher-risk patients to placebo.
If you recall, in the FRAME study, the event rate for non-vertebral fractures was much lower than expected, and at 12 months, the non-vertebral relative risk reduction was 25% in the EVENITY-treated patients but was not statistically significant.
In an exploratory analysis reported at ASBMR, the relative risk reduction at 2 years in FRAME was 25% with a nominal P value that was less than 0.05.
We recently conducted the 3-year analysis of this study, which again demonstrated nominal significance for non-vertebral fracture demonstrating that a year of EVENITY therapy still had high treatment impact through year 3 despite the fact that the control group received a very potent antiresorptive agent with Prolia in years 2 and 3.
Within our neuroscience collaboration with Novartis,
we had the opportunity to present the results from our 2 Phase III erenumab studies in episodic migraine at the American Academy of Neurology annual meeting yesterday.
The data demonstrated the robust and consistent effect of inhibiting the CGRP receptor with erenumab.
And feedback from experts at the meeting have been very positive, with many viewing this as a potentially game-changing therapy for a debilitating, highly symptomatic disease.
We look forward to making first-in-class regulatory submissions for erenumab that incorporate our episodic and chronic data later this quarter.
AMG 301, our PAC 1 antibody for migraine, also continues to progress.
We've seen encouraging pharmacodynamic activity in our Phase I study in normal subjects and are currently designing a Phase II program in migraineurs, which we expect to begin later this year.
Also in the quarter, Phase III enrollment in Alzheimer's disease began for the small molecule BACE inhibitor AMG 520 we are developing with Novartis.
In our inflammation collaboration with AstraZeneca/MedImmune, I am pleased to provide a program update for AMG 157 or tezepelumab, our monoclonal antibody that inhibits thymic stromal lymphopoietin or TSLP.
TSLP is an epithelial-derived cytokine, produced in response to pro-inflammatory stimuli that drives inflammatory responses.
TSLP expression is increased in the airways of patients with asthma, the magnitude correlating with the severity of disease.
Some of you may recall that our Phase Ib data were quite compelling and were published in the New England Journal of Medicine in 2014.
Together with AZ MedImmune, we've now received the results from a large, double-blind, Phase IIb study in patients with inadequately controlled severe asthma, in which AMG 157 demonstrated a significant reduction in the rate of asthma exacerbations compared to placebo at 52 weeks, successfully meeting the primary endpoint.
This is a very encouraging result and together with AZ MedImmune we are currently evaluating the potential for this agent to address a broad population of patients with severe asthma.
Briefly in nephrology, the first quarter, we also received approval for Parsabiv, our innovative IV calcimimetic that is administered thrice weekly at the end of dialysis for the treatment of secondary hyperparathyroidism in patients with chronic kidney disease.
And lastly, in biosimilar news from Europe, we received approval for AMGEVITA, our biosimilar HUMIRA for all available indications and submitted ABP 980, our biosimilar Herceptin for approval.
In closing, I'd like to acknowledge our staff for advancing these important programs on behalf of patients.
Bob?
Robert A. Bradway - Chairman and CEO
Okay, thank you, Sean.
I know we've taken more time than usual in our introductory remarks, so let's go straight to questions, Derek, and just please remind our callers of the process for the next step.
Operator
(Operator Instructions) And your first question comes from the line of Terence Flynn with Goldman Sachs.
Terence Flynn - MD
Maybe just a two-part on Repatha.
First, Tony, can you comment if the payers appreciate the details of the FOURIER data that Sean walked through?
And then it looks like net price might have taken a step down in the U.S. in the first quarter.
Just wonder if you can confirm that and any additional commentary that you can provide.
Anthony C. Hooper - EVP of Global Commercial Operations
Terence, sure.
All our discussions with the payers have been really starting with the discussion on the Repatha outcomes data.
And I don't think we've had any pushback at all in terms of people really understanding the robust value.
We'll continue to work with them, obviously.
Each one of them has agreed to go back and relook at the utilization and management criteria as we speak.
There does appear to be a slight adjustment in the net price.
One was due to a small accounting adjustment; and two, of course, we book our patient copay program to the net price.
And the first quarter is normally a lot higher than second, third or fourth.
So we see that normalizing as we go forward.
Operator
And your next question comes from the line of Matthew Harrison with Morgan Stanley.
Matthew Harrison - Executive Director
Tony, thanks for the detail on Enbrel.
I'm sure as you appreciate, there's a lot of questions that people have on that.
If I can just ask 2 points there, I mean, you cited a market slowdown which you think will improve throughout the rest of the year.
Could you just talk about your confidence around that?
And beyond some of the weekly data points, are there other reasons to believe that, broadly, that the market is not slowing?
And then second, it seems to me that the impact on price in the first quarter is higher than you've seen in quarters past even when thinking about copay assistance and some of the other factors.
Is there anything else going on there?
And what's your confidence about price leveling out for the year?
Anthony C. Hooper - EVP of Global Commercial Operations
Thanks, Matt.
So as you know, with Enbrel as a retail product, about 97% of the volume is reported on a script basis, so we can track it quite tightly.
For the quarter, it was definitely down -- both rheumatology and dermatology.
When I look at it sequentially, January, February, March, and then as I see it going into April, each one of those months have shown an incremental growth both in terms of DOT as well as prescriptions and in terms of growth.
So January was down a lot, February was better than January, March was better than February, and April is starting to look much better than March as well.
From a net price -- we don't see a dramatic change in the net price.
Some of the new contracts are coming into place, but our outlook on net price for 2017 hasn't changed at all.
And when I look at abandonment rates -- the abandonment rates in the first quarter are pretty similar for Enbrel to what they were in the fourth quarter or the third quarter last year.
Robert A. Bradway - Chairman and CEO
And Matthew, maybe just a big picture here, when we look at the flow of patients into the -- anti-inflammation space, particularly rheum and derm, we see no reason in the marketplace that the trend of an increasing number of patients into this therapy would have abruptly changed between the fourth and the first quarter.
So we think that we'll continue to see growth in the underlying demand for this kind of products.
Operator
And your next question comes from the line of Ying Huang with Bank of America Merrill Lynch.
Ying Huang - Director in Equity Research
I have a question on Repatha.
How much have you heard from the physicians in terms of feedback that they have to wait for a treatment guideline change by, let's say, ACC or AHA before they start prescribing more Repatha?
And if that's the case, when do you think those professional organizations will change the guideline?
Robert A. Bradway - Chairman and CEO
Yes, I think it's probably a subtle question that you're asking there, Ying, so why don't we just take a moment to really step through it.
Tony, why don't you go ahead and take the first.
Anthony C. Hooper - EVP of Global Commercial Operations
So all our discussions with cardiologists have been around their frustration of the administrative burden that's been placed upon them to get a prescription for appropriate patients.
A lot of them are having to hire full-time nurses to spend the entire day chasing down required patient data, to chase down interactions between the patient or between the physician and the respective payer or the PBM.
The guidelines themselves clearly, in everyone's mind, would help move the decision-making and the utilization criteria a bit quicker.
But our major conversation with physicians is not really around the guidelines, more around the inconvenience.
From a guideline perspective, clearly both the AHA and the ACC are busy looking at the outcomes data.
They have told us they are busy identifying position papers they wish to put forward, the NLA, the National Lipid Association is there, the Association of Preventive Cardiology -- run by doctor Seth Baum is in the process of looking at a revised set of guidelines, including a proposed set of utilization management criteria which they're proposing the PBMs and the payers should be using.
In terms of guidelines themselves, both the AHA and the ACC have said it will take some time before they actually get to a final guideline change.
Robert A. Bradway - Chairman and CEO
I think the important information here is that the data demonstrated that lower is better or, as Sean said and as we increasingly hear from experts in the field, lowest is best.
And I think people recognize that the current guidelines are out of sync with that.
So the data make the point clear, and we expect to see white papers and then, ultimately, changes in the guidelines.
But for right now, the data are an important piece of getting people to understand how to manage this disease for patients.
Operator
Your next question comes from the line of Eric Schmidt with Cowen.
Eric Schmidt - MD and Senior Research Analyst
Just as a follow-on to Ying's question, it sounds like the major bottleneck is this hassle factor, Tony, that physicians are being put through.
And I guess I'm just wondering what kind of leverage Amgen has to reduce that factor?
Can't payors just stay entrenched and say our policies are that we'll cover it, but we're going to make you go through x,y and z hoops and maintain the hassle factor and, I guess, the evidence of better medicine?
Anthony C. Hooper - EVP of Global Commercial Operations
So, Eric, I don't think I have spoken to a single cardiologist or general practitioner who hasn't commented on how onerous the process is to gain access to these products.
I think without doubt the third-party organizations -- the professional organizations such as the ACC, the AHA, as well as patient organizations such as the FH Foundation are the ones who are running the research work at the moment, including Duke, as I said.
Who actually looked at those patients who received the PCSK9 and those who didn't and actually show there's no clinical difference in the patients themselves.
This type of burden, I think, is going to start putting the pressure on the payers.
Talking to payers, they themselves are agreeing with us that the clinical data is important, and they need to expand access to appropriate patients.
So we'll continue to drive that interaction with them.
Operator
Your next question comes from the line of Cory Kasimov with JPMorgan.
Cory Kasimov - Senior Biotechnology Analyst
I have a pre-commercial question on erenumab.
I wonder if you can comment on early interactions you're having with payers on that front, or maybe just general market research for the product.
I guess, specifically, I'm wondering how much of an impediment you expect access to be in the early days of that pending launch and how much your research may have factored into this strategic decision to further engage with Novartis.
Anthony C. Hooper - EVP of Global Commercial Operations
Let me start, Cory, by just telling you about an interaction I had with my counterpart at Novartis yesterday.
He and I have both been in recent contact with neurologists who specialize in treating patients with chronic migraine.
And the two of us are quite elated at the level of excitement we're feeling amongst these physicians about having, for the first time in decades, a treatment opportunity to really help people who have this debilitating disease.
It truly is one of those symptomatic diseases where if you got a migraine, you really know about it, and it impacts how you run your life, can you run your life or can you be a good caregiver.
We are starting our discussions with the payers right now.
We are helping them see the data from a clinical perspective.
Obviously, the real negotiation can only start once we have the label and we look forward to having that in the next couple of months or so.
Operator
And your next question comes from the line of Josh Schimmer with Piper Jaffray.
Joshua Schimmer - MD and Senior Research Analyst
Maybe you can help us understand the market segmentation in asthma and (inaudible) perhaps (inaudible) versus some of the other novel biologics targeting the IL4 or IL5 pathways.
Robert A. Bradway - Chairman and CEO
Okay, question was a little bit hard to hear, Josh.
But I think, Sean, why don't you take the first crack at it?
Sean E. Harper - EVP of Research and Development
Yes, what I would say is that it's still early days for a lot of the therapies that are still in development.
But as you look across the biologics landscape in asthma, there's a few things that are at play.
One is that, in aggregate, asthma is an enormous opportunity from the perspective of the unmet need and the number of patients who are, for example, having to take courses of oral corticosteroids throughout the course of the year to manage their disease, which is very problematic for them.
And I think what you're seeing is many of the mechanisms that are either out there now in biologics or being developed currently are segmented to populations that, for example, have high eosinophilia counts, atopic phenotype, et cetera.
And in the case of TSLP, what we like about TSLP is it is a very upstream kind of mediator of this inflammation.
And our expectation is that we could have a very broad impact on patients with activity across a spectrum of patient phenotypes within the asthma disease spectrum which would make it a very attractive therapeutic option.
Operator
And your next question comes from the line of Ronny Gal with Bernstein.
Ronny Gal - Senior Research Analyst
I guess, the Supreme Court have been looking at biosimilar today.
In the case they side with you and find that shall means will, can you give like kind of a feel for what will happen with the biosimilars that have already launched with Neulasta.
Will they have to come back and do the full patent dance?
Frankly, if you win this case, what does it mean in terms of delay of biosimilar Neulasta approvals or launches?
Robert A. Bradway - Chairman and CEO
Yes, I think there are a couple of things in your question there, Ronny.
We'd tease apart the 2 pieces of it.
First, as you know, Supreme Court reviewed this today, and so we'll know within a matter of weeks.
I mean, obviously, we think the 180-day needs to be enforced as it was written in the law.
But with respect, I think you must be referring to the short-acting competitors to NEUPOGEN.
Ronny Gal - Senior Research Analyst
No, I was talking about the patent dance for -- the patent dance impact of Neulasta biosimilar launches.
Essentially if you win that, will the biosimilar Neulasta be delayed?
Robert A. Bradway - Chairman and CEO
Well, I guess I'm not sure what you mean by delayed.
I think, again, the big picture here, Ronny, is that we've known for some time that we'll face biosimilar competition.
We're expecting that, that will happen for Neulasta.
We're ready for that.
You've seen the actions that we've been taking over the past couple of years to be ready for that.
And we're ready to embrace the competition, and we've positioned the company from an operating expense standpoint with the knowledge that competition is coming.
And we're launching medicines and entering markets that we think will help us grow beyond that.
So the 180-day is obviously post-FDA approval, so we're watching different competitive products make their way through the regulatory pathway.
David W. Meline - CFO and EVP
If I could then in terms of the guidance we've offered, there are none that have been approved yet to compete with Neulasta.
There is one that's lined up, I think, in the third quarter here.
So if it were approved and the 180-day stands, then that would imply, as we've indicated, that we could face competition as soon as late this year.
And that's how our guidance is built right now.
Operator
Your next question comes from the line of Alethia Young with Credit Suisse.
Alethia Young - Research Analyst
Just again on Neulasta, I know On Pro is picking up momentum.
But I just -- I'm trying to figure out if you think -- how do you think this helps defend you against biosimilar share?
I mean is it as simple as that the market is kind of remodeling itself and so like the kind of delays and prolonged some of the competition that you may see?
Or is there some other dynamic we should be aware of?
Anthony C. Hooper - EVP of Global Commercial Operations
Alethia, it's Tony.
So let me go back to a comment I made on the last quarter earnings.
Let's use MD Anderson as an example of probably one of the most premier, large oncology teaching centers in the country.
It took MD Anderson almost -- just over 12 months to go through their P&T committee to get an agreement within the institution to start shifting patients to On Pro.
And the rationale was they were really having a good look at the clinical value, the treatment protocols, the discharge protocols, and they finally agreed that this product was certainly worthwhile having.
We spent a number of weeks training their 600 oncology nurses, so they were able to really identify the right patient, administer the drug before patients went home.
And they have, therefore, changed the clinical practice.
The feedback we get from both the oncology nurses, the oncologists themselves and patients, in fact, about the fact they no longer have to come back 24 hours later or a day after their chemotherapy, when they're in the middle of chemo-induced nausea and vomiting, is a huge advantage and allows them a better quality of life.
So we really believe that the benefit this drug brings is not simply a device, it's really something that allows patients to continue to live their lives whilst being treated for cancer.
It also resulted in changes -- definitive changes in discharge protocols, which we think would take some time to be reversed if there's no other alternative.
Robert A. Bradway - Chairman and CEO
Yes, it's worth keeping in mind, the big picture here, Alethia, some data in a peer-reviewed publication from this week recognizing that there are 100,000 hospitalizations here in this country for patients who suffer from an infection while undergoing chemotherapy.
And of course, that's what NEUPOGEN and Neulasta are designed to address.
And any product like On Pro that can help prevent some number of those infections is an important product.
So this is still -- there is still an important need in the marketplace, this innovative delivery device enables us to meet a large portion of that need.
Operator
Your next question comes from the line of Geoffrey Porges with Leerink Partners.
Geoffrey Porges - MD, Biotechnology, Director of Therapeutics Research and Senior Biotechnology Analyst
Just a follow-up on the question about erenumab.
Bob, could you take us through your thinking about the partnering decision?
Because you are on a strong net cash position, you've got robust cash flow, you've got plenty of space in your R&D -- given the sequential trend, and yet you partner sort of 1 of your 2 late-stage products for what certainly looks like it's a fairly specialized prescriber base initially.
So could you talk a little bit about that and then also how you'll be collaborating with Novartis on the launch, particularly who will be setting price and how you're thinking about price?
Sorry, it's a complicated question.
Robert A. Bradway - Chairman and CEO
No, that's fine, Jeff.
We'll take it in 2 parts.
Why don't I take the first piece, and we'll have Tony address some of the specifics of your question.
We recognized and we're excited about the opportunity to have a first-in-class and a molecule that we think has a good chance to be best-in-class for a disease where there just aren't good therapies available today.
So we're excited about that.
But at the same time, Jeff, I think there is a specialty element to this that we don't have experience in.
Novartis has been in the neurology, neuroscience field for some 60 odd years now, and so they have a real established track record there.
And as we interact with them, first with respect to international markets, I think we came to realize there were opportunities to create a bigger opportunity by combining forces than by going it alone in the international markets.
We've come to know and share and respect each other's capabilities over the time since that agreement went into place.
And as we looked at the opportunity in the U.S. and our desire to make sure we resource this to win, including getting off to a strong start with the specialist prescribers, it was our view that our shareholders are going to be better served by our joining up with somebody that has a very established presence in this field.
So that's our view and I think all of our interactions since then make us feel confident that, that was the right decision for the shareholders.
But Tony, why don't you add your thoughts?
Anthony C. Hooper - EVP of Global Commercial Operations
Sure.
Well, I mean we've been working with Novartis now from a global research perspective and a global marketing perspective for some time.
So the teams have gotten to know each other quite well.
My counterpart and I have been drawn into these discussions with these experts, as I said, and he and I are becoming even more increasingly excited about the opportunity to deliver a first-in-class product like this to patients in need.
He and I both have experience in terms of launching products in the U.S. over the last 5 years or so, and we understand some of the barriers and some of the challenges.
But we also understand the large unmet need over here.
It's clear to us that a strong start in terms of having a clear group of physicians who realize the importance of treating patients properly is going to be important to place pressure on the entire payer system to ensure we can get access.
They have a very good presence in the neuroscience market.
The feedback we've had from third-party research has shown the team and the medical team are very well regarded.
And this strong relationship in our mind will support the ability to launch fast, launch rapidly and be highly effective in the initial uptake.
So they're a good team to be with.
We'll work closely with them, and I know we can maximize our ability to bring value to patients.
Robert A. Bradway - Chairman and CEO
And Jeff, as regard to your questions about operational details, obviously, those are topics that we discuss with them in detail before we move forward.
And we think we've got -- between the 2 of us, we think we've got those details worked out.
But again, we're excited to have this partnership in hand, and we look forward to getting this molecule approved so we can get out and help patients with it.
Operator
Your next question comes from the line of Ian Somaiya with BMO Capital.
Ian Somaiya - Analyst
Just another question on Repatha.
You made a comment that payers could potentially make some changes over the coming months.
I was just hoping you can clarify, are those changes in prior authorization or they're just payers being more diligent in making sure the right patients are getting access to therapy?
As I think about ACC/AHA guideline changes and some of the answers you provided, do you need those changes -- do you need the new guidelines to state lower LDL goals?
Or what else -- what are the type of changes could we see which would benefit PCSK9 class overall?
Anthony C. Hooper - EVP of Global Commercial Operations
So Ian, it's Tony again.
So I mean clearly, everything here is driven from the interpretation and understanding of our outcomes data that, fundamentally, this product, Repatha, on top of maximally tolerated statins which are the gold standard to date, is able to drive LDL down further and reduce even more dramatically the risk of heart attack and stroke.
So the discussion with the payers are consistently around the utilization management criteria, to make sure that the burden is less onerous for physicians, that they and patients are able to get access to products quicker and faster.
White papers or position papers from professional cardiology organizations are really essential to start paving the way to ensure we move towards the guidelines down the road.
But they factor -- the good clinical data is what's important.
Payers have said to us from the beginning that, yes, they see the drug lowers LDL, but they need to understand what that means.
The outcomes data now shows you what that means and all our discussions have been if we had to renegotiate a contract, it is based around the payers wanting us to amend and make more simple the utilization management criteria.
Operator
And your next question comes from the line of Umer Raffat from Evercore ISI.
Umer Raffat - Senior MD and Fundamental Research Analyst
I have 2 pipeline questions, if I may.
On romosozumab, the upcoming ARCH trial, what percentage of patients were enrolled in Latin America?
And secondly, on CGRP, I noticed you have a treadmill CV safety trial that wrapped up earlier in the year.
Any update and/or feedback from that?
And was that a study that FDA asked you to do?
Sean E. Harper - EVP of Research and Development
So with respect to ARCH, the percentage of patients in Latin America -- I don't remember an exact number but it is substantially less than it was in the FRAME study, but it is still meaningful.
So I think it's about 30%, roughly.
Whereas it was higher than that in FRAME.
But I think it's important to recognize that it wasn't the part of the world that the drug was being administered that was the problem.
It was the fact that the fracture rates in a placebo-controlled population, where physicians were very hesitant to put high-risk individuals into the trial because of the placebo arm, that the fracture rate was so low that we really didn't have any opportunity to demonstrate a further lowering of the fracture rate.
And we don't expect that phenomenon in FRAME because the patients were -- that were enrolled were, by definition, by protocol, much higher risk.
They had to have had prevalent fracture already, they had much lower T scores and so on because, in this case, patients are either getting romosozumab followed by alendronate or alendronate from the get-go with no placebo control.
So I wouldn't focus so much around the question of Latin America, although that was where we saw the problem with the very low event rates.
And then the other piece to keep in mind is that we do have an event-driven analysis for non-vertebral fracture in FRAME -- in ARCH, sorry, which we didn't have in FRAME and that also, kind of, as you know, addresses this event number powering kind of problem that you can run into which is essentially the wall we hit in FRAME.
With respect to CGRP, I think it's a very good question.
One of the things that I learned from talking with people at the meetings in Boston is that the real question in most neurologists' mind right now about the CGRP class remains long-term safety and tolerability.
They're very impressed with the efficacy data, they're very impressed with the tolerability and safety that have been observed to date in relatively short kind of exposures in the Phase II and Phase III study.
And so I think there's a number of things that we have been doing specifically as a company like we have over 3 years of long-term exposure in open-label extension studies.
Other companies to our knowledge have not been doing this.
We did the CV treadmill study on our own volition because we felt that, again, these were going to be the kind of questions that would exist in the marketplace.
We have a number of preclinical and clinical studies, for example, on the impact on blood pressure and so on that have been done specifically to in anticipation of the kind of questions that prescribers will have around the long-term safety of the product.
Many of these data are not broadly appreciated because they haven't come out in peer-reviewed publications, and they haven't been, necessarily, presented at -- in plenary-type presentations like the Phase III data were.
But in aggregate, I think these are going to be important and potentially differentiating data for the product.
Operator
Your next question comes from the line of Carter Gould with UBS.
Carter Gould - Large Cap Biotech Analyst
Sean, I'll stick with the pipeline theme.
On the BLINCYTO studies you referenced DLBCL when do you think those data might be presented?
Are those at the registrational?
And on CNP520, is there any interim built into that Alzheimer's study?
Sean E. Harper - EVP of Research and Development
Yes, so the BLINCYTO studies are just enrolling now, so it's a little bit hard to project when we would be presenting data from them.
That depends, of course, on a number of factors in terms of enrollment rate and when we might hit certain milestones with respect to interim analysis, and so on.
But the program is progressing on plan, and we're seeing a lot of enthusiasm in the marketplace for the -- in clinical trial investigator space, I should say -- for the program.
And then, with respect to the 520 program, there are some futility analyses built into the Alzheimer's study, which are designed to kind of cut losses if we weren't seeing some kind of an effect.
And I believe there may be also an early stopping efficacy interim late in the trial, though I'd have to go back and look at the protocol to be sure about that.
Anthony C. Hooper - EVP of Global Commercial Operations
Sean, not everybody might be familiar with the 520, so you might just remind them why we're (inaudible)
Sean E. Harper - EVP of Research and Development
Yes, so you might remember that this was highlighted in the Wall Street Journal the other day.
We -- Novartis and Amgen I think, had come convergently to the opinion that we have extremely high confidence in the target itself, in large part because of the genetic validation work that was done on this target at deCODE.
And so the question is really a question of when to intervene.
And what we're doing in this study is enriching for a population who, based on their APOE genotype and age, are very highly predisposed to converting from a normal cognitive capability to a minimally impaired cognitive capability.
So we're going earlier than anyone else has done to date.
This actually may be what's required to demonstrate the disease modifying effect.
So the molecule itself is a very high-quality small molecule BACE inhibitor that has been demonstrated to drop a-beta levels dramatically in CSF and all that good stuff.
And the main issue strategically is to go in a little bit earlier in this population.
And while this is a genetically defined population, about 60% of patients who actually develop Alzheimer's have these -- one of these predisposing alleles.
So it's not some tiny little population that's genetically defined.
Operator
Your next question comes from the line of Geoff Meacham with Barclays.
Geoffrey Meacham - MD and Senior Research Analyst
One for Tony or Sean.
So in contrast to Repatha, you haven't had a lot of payer pushback on Prolia.
So are there payer or pricing lessons to be learned when you think about the romo launch in July and its combination with Prolia?
Anthony C. Hooper - EVP of Global Commercial Operations
Let me take that one, Jeff.
The major difference, probably, between the 2 is that the majority of Prolia sales are Part B, so it's a buy-in-bulk model whereas Repatha is predominantly a Part D or a retail product itself.
I think it's all around the value proposition.
And we go back again to the day we presented at the ACC to just reconfirm that the present net price of Repatha in the marketplace is well within the range of the value proposition or the value-based pricing, in fact, for this particular product.
So I think the 2 things are different.
There was a lot of speculation upfront about how the PCSK9s could cost the market $150 billion, or whatever it was which resulted in some silly actions, I think, with all due respect.
The drugs continue to show real good value.
We're happy to stand up and discuss it anywhere and (inaudible) at the moment is how you change utilization management criteria, if nothing else.
Operator
And your next question comes from the line of Chris Raymond with Raymond James.
Chris Raymond - MD and Senior Biotech Analyst
So just a broader question on the biologics market structure and maybe as it relates to your biosimilar business.
So we were reading white paper that, I think, you guys put out recently in the biosimilar market.
I think you guys highlight a real problem that even under a hypothetical scenario, I think your paper talked about how where a biosimilar is priced at say a 25% discount to the innovator, you still have a patient copay that's still higher than the innovative drug.
I think in your paper, it said like almost 40% higher under Medicare Part D. So just curious, you guys seem as close as anyone to policymakers and directions to where this may go.
And I know you've devoted a great deal of time and energy towards your biosimilar business.
I assume that there's an expectation here that some of these disincentives will go away.
Can you maybe talk in broad terms how you think that might play out?
Robert A. Bradway - Chairman and CEO
Tony, why don't you go ahead and take the...
Anthony C. Hooper - EVP of Global Commercial Operations
Sure.
One, I don't remember us putting out a white paper, so I just want to make sure that we're not being given authorship of something we didn't write, because I'm unaware of Amgen putting out a white paper.
We have said historically in the past that we believe that the biosimilar market will move much like a branded generic market, that the pricing in the beginning will be cautious, that the people will come to market and those who actually use biosimilars will be looking for a combination of quality, continuity of quality, continuity of supply and the reputations of the organizations coming to market.
We believe that as Amgen, we have a lot of good reputation.
We have a 30-year history of never shorting a patient, of having quality product consistently on the marketplace.
As we've gone through the process of actually developing these biosimilars ourselves, we've realized how tough it is to actually bring these drugs to market or how to develop them.
We spend time with regulators around the world making sure they understand what good looks like.
So the rules and regulations are aligned with what we are doing.
There is some debate in the U.S. around linked J-codes between the brand versus the biosimilar.
I think those are still being debated at the moment.
But until then, it's an unlinked J-code which means reimbursement of copays are different.
There's a lot happening in the marketplace and how that could change, I can't speculate now.
Robert A. Bradway - Chairman and CEO
Derek, as it's going on 6:30 on the East Coast, let's take 2 last questions.
Operator
Absolutely.
And your next question comes from the line of Eun Yang with Jefferies.
Eun Yang - MD and Senior Equity Research Analyst
A question for Sean.
In your collaboration with Arrowhead on RNAi therapies targeting cardiovascular diseases, what's your view on potential safety issues that may be related to RNAi-based therapies, and when do you expect to move into clinic?
Sean E. Harper - EVP of Research and Development
Yes, I think that the siRNA technologies right now look good enough that in the case where the only way one can drug a target appears to be siRNA-based innovation, it's a reasonable thing to pursue.
And so that's what we're doing, for example, for LP(a), where we don't feel there's any other way to drug the target.
It's not a derisked platform at this point, and there obviously are concerns.
And I think that regulators are going to be very cautious in approving products early on that are based on that kind of -- on this kind of novel platform unless, of course, it's in a setting where there's very high unmet need and no other kind of option.
So we're exploring siRNA largely in settings in which the drug can't be -- the target can't be interdicted in other ways and also where we feel that it would be a -- that the therapy would be unique in its ability to address that target.
So LP(a) represents an example like that.
We have other targets that we feel are potentially that way.
And so at this point, we're moving that ahead.
The program is really still in a preclinical stage but it is moving very, very rapidly.
The collaboration has been great.
But I can't really give specific timelines of when it would be in the clinic.
Operator
Your next question comes from the line of Salim Syed.
Salim Syed - MD and Head of Biotechnology Research
Just one question on romo maybe for Sean or for Tony.
The non-vertebral data, guys, how are you thinking about that in terms of uptake?
And then also, will we be getting that non-vertebral data in the press release either in the qualitative form or quantitative form when we get the top line?
Sean E. Harper - EVP of Research and Development
Yes, so what I would say is that having evidence of non-vertebral fracture impact is important for these kind of therapeutics.
Of course, the most important endpoint for physicians, payers and patients is clinical fracture, which is the symptomatic vertebral fractures which can be very profoundly impactful to patients' quality of life as well as the long-bone fractures or non-vertebral fractures.
And there, we've seen good results.
And that's one of the co-primary endpoints for ARCH as well.
And I think that it is something that is an important variable.
In the end, things like hip fracture are the real dreaded complications of osteoporosis.
So having a sense from the aggregate data for a molecule that there can be protection at sites like the hip is important.
And that's why we're anticipating ARCH keenly as it's coming very soon.
I can't comment on what we exactly will decide to disclose in a press release.
We are always focused on very complex embargo requirements by both the society clinical presentation venues as well as the journals that we're trying to publish in, and this can be quite an elaborate dance to figure out what we can put into our press releases in that setting.
Robert A. Bradway - Chairman and CEO
Thank you all for your questions and for your time.
We appreciate it.
Maybe just a quick -- couple of quick thoughts from me, and then we'll let you get back to work.
First, as you heard in our discussion, we're pleased with the volume growth, particularly from our newer products in the quarter.
Clearly, there was some noise in the first quarter around Enbrel and the trends.
But as you heard us say, we think the long-term trends for Enbrel are on track despite that noise in the marketplace in the first quarter.
And again, lastly, we think we positioned the company well.
And as a group here, we're excited about the future, given the long-term growth opportunities that we see for Amgen.
So thanks for your interest.
We look forward to talking to you on the second quarter call.
Operator
This concludes today's conference call.
You may now disconnect.