使用警語:中文譯文來源為 Google 翻譯,僅供參考,實際內容請以英文原文為主
Operator
Good afternoon, and welcome to Supernus Pharmaceuticals' Second Quarter 2021 Financial Results Conference Call. (Operator Instructions) As a reminder, this conference call is being recorded.
I would now like to turn the conference over to Peter Vozzo of Westwicke, Investor Relations Representative for Supernus Pharmaceuticals. You may begin.
Peter Vozzo - MD
Thank you, Josh. Good afternoon, everyone, and thank you for joining us today for Supernus Pharmaceuticals' second quarter 2021 financial results conference call. Today, after the close of the market, the company issued a press release announcing these results. On the call with me today are Supernus' Chief Executive Officer, Jack Khattar; and Jim Kelly, Chief Financial Officer. Today's call is being made available via the Investor Relations section of the company's website at ir.supernus.com. Following remarks by management, we will open the call to questions.
During the course of this call, management may make certain forward-looking statements regarding future events and the company's future performance. These forward-looking statements reflect Supernus' current perspective on existing trends and information. Any such forward-looking statements are not guarantees of future performance and involve risks and uncertainties, including those noted in the Risk Factors section of the company's latest SEC filings. Actual results may differ materially from those projected in these forward-looking statements.
For the benefit of those of you who may be listening to the replay, this call is being held and recorded on August 4, 2021, at approximately 4:30 p.m. Eastern Time. Since then, the company may have made additional announcements related to the topics discussed. Please reference the company's most recent press releases and current filings with the SEC. Supernus declines any obligation to update these forward-looking statements, except as required by applicable securities laws.
I will now turn the call over to Jack.
Jack A. Khattar - Founder, President, CEO, Secretary & Director
Thank you, Peter. Good afternoon, everyone, and thanks for taking the time to join us as we discuss our 2021 second quarter results. During the second quarter, we continued to make significant regulatory, operational and commercial progress, highlighted by the approval of Qelbree and its launch at the end of May for the treatment of ADHD and pediatric patients. The early performance of Qelbree is on track with our expectations. Healthcare providers are excited about Qelbree as the first novel non-scheduled medication option for ADHD in over a decade. Qelbree's prescriber base is rapidly expanding each week, and healthcare providers expect to increase prescribing significantly as children get back to school this fall.
We are encouraged by the early clinical feedback, which has been positive and in line with the results of our Phase III clinical trials. Reports from the field indicate that patients are experiencing demonstrated improvement in ADHD symptoms as early as week 1 with continued improvement over the subsequent weeks, having a once-daily, rapid and extended-release sprinkleable capsule for full-day exposure, has been well received, and the safety and tolerability profile is allowing patients to stay on therapy.
Early trends in prescriptions reflect the heavy sampling programs with patients starting on a 2 to 4 weeks of samples. Over 25,000 starter kits have been distributed since the launch and in preparation for the back-to-school season. We look forward to the back-to-school season to be in full swing so that we can help as many pediatric patients as possible.
Regarding managed care coverage, overall, more than 60% of lives in the pediatric market have access to Qelbree. After just 3 months on the market and compared to other 3 branded nonstimulants, Qelbree is at an advantage or is at parity in more than 80% of the commercial health plans and in more than 90% of the Medicaid plans. Regarding the adult population, we recently submitted a supplemental NDA to the FDA for Qelbree for adult patients with ADHD. We expect to hear from the FDA in the third quarter regarding acceptance of the submission and potential PDUFA date.
Turning now to the pipeline. The NDA for the apomorphine infusion pump, or SPN-830, is on track for resubmission in the second half of this year and the SPN-820 Phase II clinical study in treatment-resistant depression is on track for initiation by the end of 2021.
Moving on to the commercial products and starting with Trokendi XR and Oxtellar XR, we are pleased with the stability of the brands despite declines in prescriptions and the reduced promotional efforts by the company. Since the launch of Qelbree, the products have been promoted by a much smaller neurology sales force that is focusing its promotional efforts on supporting the current prescriber base. For the first half of 2021, the 2 products combined delivered net sales of $203 million, slightly lower than the $206 million in the same period last year. We continue to see an increase in the average size of a prescription for each product contributing to the increase in the average wholesaler acquisition cost price per prescription. On APOKYN, we are encouraged with the second quarter performance and have started to see some stability with the brand after the competitive dynamics that have prevailed for the past 9 months.
And finally, regarding corporate development, we continue to be active in looking for strategic opportunities to further strengthen our future growth and leadership position in CNS.
With that, I will now turn the call over to Jim.
James Patrick Kelly - Executive VP & CFO
All right. Thank you, Jack. Good afternoon, everyone. As we review our second quarter results, please refer to today's press release. I'll begin with our revenue and earnings before turning to discuss operating expenses. And as a reminder, in June of 2020, we closed the acquisition of the US WorldMeds products. This means our prior year comparisons reflect a partial quarter financial impact of that acquisition.
Total revenue for the second quarter of 2021 was $141.3 million, an increase of 12% as compared to $126.7 million in the same quarter last year. Total revenue in the current quarter was comprised of net product sales of $138.6 million and royalty revenue of $2.7 million. Net product sales in the second quarter grew by $14.6 million or 12% compared to the prior year. Year-over-year growth for Oxtellar XR sales and the benefit of a full quarter of sales for APOKYN, MYOBLOC, XADAGO, was partially offset by a decline in Trokendi XR.
Qelbree was launched in late May, and we're happy to report our initial $300,000 in sales for the second quarter of 2021. Qelbree net sales include a temporarily high commercial co-pay deduction as we support patients during the early launch period, while we continue our commercial contracting efforts to establish access for patients. Regarding current quarter inventory levels, we saw a decrease of less than $1 million for inventory held by our direct purchasers as compared to the end of the first quarter of 2021, now this excludes the initial stocking activity for Qelbree.
Operating earnings were $34.1 million for the second quarter of 2021 compared to $45.5 million in the same period the previous year. Net earnings were $23.7 million for the second quarter of 2021 or $0.43 per diluted share compared to $34.7 million or $0.65 per diluted share in the same period the previous year. As of June 30, 2021, the company had $855.3 million in cash, cash equivalents and marketable securities compared to $772.9 million as of December 31, 2020. Of note, we did see over $40 million favorable impact on cash resulting from the timing of payments from Medicaid and managed care rebates that will be paid in the third quarter of 2021.
I'll now provide some more details related to operating expenses. For SG&A, second quarter of 2021 expenses were $69.5 million compared to $48.1 million in the same period last year. This increase reflects our Qelbree launch activities and the full quarter impact of commercialization efforts for APOKYN, XADAGO and MYOBLOC. Cost of goods sold for the second quarter of 2021 was $25 million, a $16.7 million increase compared to the prior year. This increase was primarily due to the higher costs recorded in 2021 for the acquired commercial products due to the timing of the US WorldMeds acquisition and related to MYOBLOC inventory rejected lots in the period.
Research and development expenses were $15.5 million for the second quarter of 2021 compared to $22.2 million in the same period last year. The majority of this decline is explained by the $10 million fee paid to Navitor in the second quarter of 2020 for the option to acquire or license SPN-820. In addition, we have added expense related to the advancement of our pipeline programs, most notably SPN-820 for the treatment -- for treatment-resistant depression.
Two noncash items, including -- included in our operating earnings are amortization of intangible assets and contingent consideration gain. Amortization expense for intangible assets was $6 million for the second quarter of 2021, an increase of $3.5 million compared to the same period the prior year. Contingent consideration gain reflects the incremental period change to the amount for contingent purchase price milestones we expect to pay related to the US WorldMeds acquisition. During the second period of 2021, we recorded a gain of $8.8 million, which reflects a decrease to the expected milestone liability.
Turning now to full year 2021 financial guidance. We reiterate our prior financial guidance, including an increase to the lower end of the operating earnings range. We reaffirm revenue guidance range of $550 million to $580 million, which is comprised of both net product sales and royalty revenue. For the full year 2021, we expect combined R&D and SG&A expenses in the range of $380 million to $410 million and operating earnings between 70 and $90 million. The increase to the lower end of the operating earnings range is related to the favorable impact of the contingent consideration gain noted in the current period. In addition, we expect full year 2021 amortization of intangible assets of approximately $24 million. Further, we expect full year 2021 effective tax rate of 28% to 31%. This range is above our normally expected range for this year of 26% to 28% due to a number of discrete items for the year.
With that, I'll turn the call back to the operator for Q&A.
Operator
(Operator Instructions) Our first question comes from David Steinberg with Jefferies.
David Michael Steinberg - Specialty Pharma Analyst & Equity Analyst
Couple of questions. First, Jack, you mentioned you've already distributed 25,000 starter packs. What will be the number before the back-to-school season starts? And do you have any sense of, in the initial prescriptions, what percent of the scripts are actually conversions from the free starter packs? And what percent are sort of scripts that started without a sample? And then, final question is, how long do you expect to sample, i.e., when will scripts -- when will we be able to see the sort of the normal course of the scripts playing out versus the freebies?
Jack A. Khattar - Founder, President, CEO, Secretary & Director
Yes, sure. Yes, the 25,000 starter kits, that's the distribution to date to all of the high prescribers and our target physicians in the universe that we are targeting for Qelbree. This will continue -- this effort will continue. To your question, will continue throughout. We expected the -- at least the first 6 months of launching the product until we have a very strong coverage across board, across all the plans with whom we are currently negotiating, and we'll continue to negotiate the contracts. So therefore, there is no specific timing we say we'll stop sampling or not. And samples actually will continue, they're not only for launch. They will also continue on an ongoing basis. Nevertheless, they may not be at the same rate as they are now. So we will fine-tune that as time goes on, but they will always be there. And it is one of the advantages we have currently in the marketplace versus every other company out there, really giving patients a free product to try the product and see for themselves the performance of the product.
So we're very pleased with the fact that we can actually sample the product. We're happy to do that. We want to help patients to get on the product and continue to do that. As far as your questions on conversion and scripts with and without samples, I mean, we have a very small database right now. So it's not like we have a lot of data points that we can cite from. But as time goes on, we can certainly get a better feel for it. So I don't have any specific numbers that can give me or can be a good predictor for the next 3 months, which are really the most important ones, which is the back-to-school season.
Operator
(Operator Instructions) Our next question comes from David Amsellem with Piper Sandler.
David A. Amsellem - MD & Senior Research Analyst
And just a couple on Qelbree. So Jack, you mentioned covered lives. I'm interested in what kind of utilization management you're seeing? I know these are early days, but are you seeing -- or do you have contracts in place where -- or situations where payers and making patients step through other nonstimulants like Strattera or Intuniv? And just talk about just generally what utilization management is looking like or what you think will look like over time? And then secondly, regarding co-pay assistance, I know you mentioned how that impacted the net sales number in the quarter, but going forward, I'm assuming you're going to be subsidizing out-of-pocket expenses in a significant way. So what implications does that have for the gross to net, and what's your latest thinking on the gross demand?
Jack A. Khattar - Founder, President, CEO, Secretary & Director
Yes. Sure. Yes, clearly, I mean, the various components within the gross to net in the life cycle of a product, they always shift around. And at the beginning, when you have a launch like this, there is a heavy emphasis on the co-pay and the patient assistance to get patients the medication and help them with the cost of the medication until the coverage becomes and gets to a level where we're pretty pleased with. So certainly, at this point, as Jim pointed out, and as you mentioned in your question, the co-pay is a big component of the gross to net. Over time, of course, as we have more contracts in place, the rebates then become a bigger piece and the co-pay starts going down as part of the gross to net, and they hopefully balance out each other at a point where the total gross to net on an ongoing basis will decline overall.
So these are all the different moving parts clearly with different parts being heavier upfront behind the launch, behind the trial and making sure the patients get access to the product until later on when we have the contracts in place that will pick up some of that gross to net and the piece -- and that will depend on the utilization, to your question, in a lot of these plans. So the heavier the utilization, obviously, the bigger the rebate portion will be, but also will be the lower the co-pay portion.
Regarding the kind of coverage we have so far, it really is mixed among so many of the plans. There is step added. Some of them have one, some of them have 2, some of them are stimulants, some are nonstimulants. So it's really a mixed bag at this point, and we're working through all that. We have bids for many, many plans out there. So we are in a fairly late stage in negotiations with a lot of the contracts and the plans, and we're working pretty hard to secure as many contracts as possible, as early as possible. However, our plan has been from the beginning that the first 6 months, I mean, we're willing to do what it takes from a patient perspective to keep the medication in the marketplace with access where patients can actually try it and see for themselves the performance, because we think at the end of the day, utilization and the actual prescriptions will drive the coverage eventually.
And that's why we are extremely pleased and excited about the early -- yet it is early, of course, the early clinical feedback from the marketplace that the product actually is delivering on what we saw in the Phase III clinical results. It's delivering exactly the kind of results that we have seen in the clinical studies, matching the profile that we saw in the clinical studies as far as how quickly it's working, how well it is working, and also as importantly, how well it is being tolerated. So we're very pleased with that. Although it is early, but still, these are very encouraging signs that we've seen so far in the marketplace. And if that holds, definitely, we expect utilization to accelerate. As I mentioned in my remarks, a lot of physicians have already indicated to us that their intent is to increase significantly the prescribing of Qelbree as the back-to-school season kicks in, and higher gearing in the next few weeks, clearly. So we will be looking forward to that as well.
Operator
And I'm not showing any further questions at this time. I would now like to turn the call back over to Jack Khattar for any further remarks.
Jack A. Khattar - Founder, President, CEO, Secretary & Director
Thank you. We remain very focused on the launch of Qelbree, especially as we head into the back-to-school season. In addition, we continue to advance SPN-830 along its regulatory pathway towards potential approval. Qelbree and SPN-830 represent very important growth drivers for the company, and we're committed to progressing them towards commercialization and market success. Thanks, again, for joining us today. We look forward to updating you on our progress throughout the year.
Operator
Thank you. This concludes today's conference call. Thank you for participating, you may now disconnect.