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Operator
Good morning, and welcome to the Curis Fourth Quarter and Full Year 2017 Earnings Conference Call. (Operator Instructions) Please note this event is being recorded.
I would now like to turn the conference over to the Chief Financial and Chief Administrative Officer of the company Mr. James Dentzer. Please go ahead, sir.
James E. Dentzer - CFO & Chief Administrative Officer
Thank you, operator, and welcome to Curis' Fourth Quarter 2017 Earnings Call. Before we begin, I would like to encourage everyone to go to the Investors section of curis.com to find our earnings press release and related financial tables.
I would also like to remind everyone that we will be making forward-looking statements which are based on our current expectations and beliefs. These statements are subject to certain risks and uncertainties and our actual results may differ materially. I encourage you to consult our SEC filings for additional detail.
I will now turn the call over to our President and CEO, Dr. Ali Fattaey. Ali?
Ali Fattaey - President, CEO & Director
Thank you, Jim. Good morning, everyone, and thank you for joining us today. 2017 was a year with significant clinical data for our drug candidates, and we look to use these for creating considerable value for our shareholders in 2018.
Curis' achievements in 2017 included demonstrating that CUDC-907 is an active agent in patients with MYC-altered DLBCL, with nearly 1 in 4 treated patients experiencing a durable objective response. Also establishing that CA-170 can significantly increase cytotoxic T-cell numbers in patients' tumors and result in tumor shrinkage at a safe oral dose. Further, we were successful in bringing CA-4948 IRAK4 kinase inhibitor into the clinic to test its anti-cancer activity in patients with lymphomas. We've also readied CA-327 for first-in-man clinical testing and have secured sufficient capital for our operations into the second half of 2019.
These accomplishments are consistent with our business strategy to develop multiple oncology drug candidates which we expect to commercialize in certain territories should they reach their registration state. Now today, I'd like to provide a brief update on each of these as well as our expectations for 2018.
I'll begin with CUDC-907. At the ASH annual conference in December last year, we presented the combined Phase I and Phase II clinical experience with CUDC-907 in patients with relapsed refractory DLBCL. Of the total 105 patients with relapsed refractory DLBCL treated with CUDC-907, 60 were identified to have MYC-altered disease. And of this 60, 14 patients had an objective response, including 8, that is over half of the responders, experiencing complete responses. The median duration of response for these patients was 13.6 months. Based on these results, we conclude that beyond 1 year of durable benefit in approximately 1 in 4 treated patients is a significant clinical benefit for patients with relapsed refractory DLBCL in general.
Now recent reports, including those from the published CORAL and REFINE studies, have noted an exceptionally poor outcome for patients with MYC-altered relapsed/refractory disease. These studies note that relapsed/refractory DLBCL patients who do not proceed to transplant or -- and, sorry, irrespective of their MYC status, had a median overall survival of 4.4 months, and older patients and MYC-altered patients have even worse outcomes.
Our clinical results with CUDC-907, when compared to these historical trial findings, clearly indicate that CUDC-907 is active and is meriting of continued development to seek its registration for treatment of patients with MYC-altered relapsed/refractory DLBCL. We should also note that the vast majority of the patients treated with CUDC-907 were not eligible to receive a stem cell transplant and would likely not be eligible for treatment with other cell therapy drug regimens either.
At this point, we have been and continue to work closely with the regulatory authorities in order to define and establish a pivotal path for registration of CUDC-907 for the treatment of this patient population. We note that approximately 1/3 of patients with DLBCL have MYC-altered disease, providing a significant commercial opportunity for Curis.
In addition to preparation for the design of a pivotal clinical study, we have continued to work with the commercial drug substance and product manufacturers as well as held discussions with a potential companion diagnostic partner to enable selection of MYC-altered patients for treating physicians. We expect to provide further update on our regulatory discussions as well as our development plan for CUDC-907 shortly.
I would now like to provide an update on CA-170, the first orally administered small molecule checkpoint antagonist that we are developing in collaboration with our partner, Aurigene. As you recall, CA-170 targets the PD ligands and VISTA inhibitory immune checkpoints.
In November of 2017, at the Society of Immunotherapy for Cancer annual conference, we presented preliminary results from 39 patients treated as part of the dose escalation stage in the Phase I trial of CA-170, with doses ranging from the initial 50-milligram through 800-milligram daily continuous dose cohorts.
At the time of the SITC presentation, 6 patients, 5 of whom were immunotherapy treatment-naive, had experienced continued shrinkage of their tumors over multiple cycles. Evidence of an increase in the population of cytotoxic T-cells within the patients' tumors after CA-170 treatment was also noted in 6 out of 10 patient samples evaluated, which indicated that, as expected, orally administered CA-170 is a potent immune modulator.
Now since the time of the SITC presentation, we have completed dosing in a cohort at the 600-milligram twice-daily dose for a total daily dose of 1,200 milligrams. There appears to be a significant improvement in the steady state levels of CA-170 using this twice-daily dosing schedule with as little as twofold difference between the maximum and trough plasma drug concentration levels. We are encouraged with these recent results and have initiated dosing at the 900-milligram twice-daily dosing in a cohort of immunotherapy treatment-naive patients.
We are also particularly excited that our partner, Aurigene, has recently initiated a Phase II trial of CA-170, enrolling select populations of patients in multiple centers in India. Now one advantage of this study is access to a significant population of immunotherapy treatment-naive patients with cancers of interest for CA-170 treatment, including those with Hodgkin's lymphoma and MSI-high diseases.
We and our partner, Aurigene, expect to present further updates on the clinical results of CA-170 testing in the Phase I and Phase II trials by mid-2018.
Recently published reports have emerged noting a proportion of patients from certain cancer types that appear to express high levels of VISTA protein on the tumor cells. This feature is different than the predominant expression of VISTA protein expression on immune cells, including myeloid cells that appear in the tumor microenvironment. Our internal survey of a large repository of cancer tissue samples appears to be consistent with these reports. We are currently exploring whether these results provide us an opportunity for a direct patient selection strategy to examine CA-170's effects in such patients. We should note that up to this point, we have not yet identified a CA-170 treated patient that has demonstrated this particular characteristic.
I would now like to update on our IRAK4 kinase inhibitor drug candidate, CA-4948. We are excited with the initiation of patient enrollment in the Phase I trial of CA-4948, which is currently the only IRAK4 kinase inhibitor in clinical development for treatment of patients with cancer. Our Phase I study is enrolling patients with non-Hodgkin's lymphoma, gearing the dose escalation state, and in particular, patients with cancers that are shown to have alterations in that MYD88 gene or the Toll-like receptor signaling pathway.
In this Phase I study, patients are currently dosed orally on a once-daily schedule during the dose escalation, and we expect to examine other schedules of administration as we receive pharmacokinetic and pharmacodynamic data as well. The primary endpoint of this study is to establish the safety, tolerability pharmacokinetic and pharmacodynamic profile as well as to establish the recommended Phase II dose and to measure any anti-cancer activity in treated patients. We expect to provide an update on this Phase I trial later in the second half of this year after further dose escalation.
In December, our scientists also presented nonclinical data further demonstrating CA-4948's significant mechanism-based anti-cancer activity in multiple lymphoma tumor models in mice, either as a single agent or in combination with the anti-BCL2 drug, VENCLEXTA, which is approved for treatment of patients with CLL. Our initial nonclinical data also show encouraging effects of CA-4948 in mouse models of AML, and we expect to explore the merits for clinical testing of CA-4948 for treatment of patients with these malignancies in 2018.
Regarding our drug candidate CA-327, in partnership with Aurigene, which is an orally bioavailable small molecule that targets PD-L1 and TIM-3 immune checkpoints, IND-enabling studies have now been completed, and we expect to prepare for regulatory filing for this drug candidate in the first half of 2018.
Lastly, we are pleased to note Roche and Genentech's continued commitment to commercialize Erivedge globally for the treatment of patients with advanced basal cell carcinoma.
In summary, we see 2018 as an opportune and productive year for Curis and our shareholders. We believe CUDC-907 has the opportunity to provide benefit for the population of patients with MYC-altered DLBCL, and we are committed to advance this drug candidate for these patients. In heme malignancies, CA-4948 IRAK4 kinase inhibitor provides us with an opportunity to build on and extend our now significant experience and extensive network of investigators for development of drug candidates to treat patients with B-cell malignancies. CA-170 is now established as the first oral checkpoint inhibitor in the clinic, and we have multiple opportunities to demonstrate its development path in select populations of patients in the ongoing Phase I and Phase II trials with our partner, Aurigene.
And with that, I will now turn the call over to Jim for a discussion of our financial results.
James E. Dentzer - CFO & Chief Administrative Officer
Thank you, Ali. For the year ended December 31, 2017, we reported a net loss of $53.3 million or $0.36 per basic and fully diluted share as compared to a net loss of $60.4 million or $0.45 per basic and fully diluted share in 2016. The net loss for the year ended December 31, 2016, includes a noncash in-process research and development charge of $18 million related to the amendment of Curis' license agreement with Aurigene.
For the fourth quarter of 2017, we reported a net loss of $8 million or $0.05 per basic and diluted share as compared to a net loss of $11.3 million or $0.08 per basic and diluted share for the same prior year period.
Revenues for the year ended December 31, 2017, were $9.9 million as compared to $7.5 million for the same period in 2016. Revenues were $3.3 million and $2.4 million for the fourth quarter of 2017 and 2016, respectively. Revenues for both periods comprised primarily royalty revenues recorded on Genentech and Roche's net sales of Erivedge.
Operating expenses were $59.7 million for the year ended December 31, 2017, as compared to $65.6 million for the same period in 2016. Operating expenses were $10.4 million for the fourth quarter of 2017 as compared to $13.1 million for the same period in 2016.
Research and development expenses were $45.1 million for the year ended December 31, 2017, as compared to $31.6 million for the same period in 2016. The increase was primarily due to 2 payments to Aurigene for $3.75 million each for an exclusivity option, which were paid in January 2017 and September 2017, as well as increased costs related to the ongoing clinical activities for CA-170. Employee-related expenses increased over the prior year period primarily due to higher stock-based compensation and personnel costs.
Research and development expenses were $6.9 million for the fourth quarter of 2017 as compared to $9.2 million for the same period in 2016. The decrease in research and development expense was primarily due to an option payment to Aurigene of $1.5 million paid in the fourth quarter of 2016 that did not recur and decreased costs related to CUDC-907 clinical activities.
General and administrative expenses were $14.1 million for the year ended December 31, 2017, as compared to $15.6 million for the same period in 2016. The decrease in general and administrative expenses was driven primarily by lower legal, professional and consulting services and other administrative expenses, offset slightly by higher stock-based compensation for the period.
General and administrative expenses were $3.3 million for the fourth quarter of 2017 as compared to $3.8 million for the same period in 2016. The decrease in general and administrative expenses was driven primarily by decreased spending for legal services and consulting costs.
Other expense was $3.6 million for the year ended December 31, 2017, as compared to $2.4 million for the same period in 2016. Other expense was $0.9 million for the fourth quarter of 2017 as compared to $0.6 million for the same period in 2016. Other expense, net, primarily consisted of interest expense related to the debt obligations of Curis Royalty, a wholly owned subsidiary of Curis.
As of December 31, 2017, our cash, cash equivalents, marketable securities and investments totaled $60.2 million, and there were approximately 164.2 million shares of common stock outstanding.
With that, we'll open the call up for questions.
Operator
(Operator Instructions) The first question comes from Adnan Butt with Guggenheim Securities.
Adnan Shaukat Butt - Senior Analyst
I'll have 2. First, on 907. Ali, at this point, is it more likely to see responses from the Curis-sponsored Phase I or the Phase II? The reason I asked that is because you seem to be dose-escalating in the Phase I. So is the India Phase II study, is that following a similar schema?
Ali Fattaey - President, CEO & Director
Adnan, I apologize. I think you said CUDC-907 Phase I and Phase II?
Adnan Shaukat Butt - Senior Analyst
I'm sorry. I meant 170. I meant 170. Sorry. 170. You're dose-escalating in Phase I. Is Phase II in India following a similar schedule? Which one is -- will be the first to response -- will be the first to report on activity?
Ali Fattaey - President, CEO & Director
So maybe the first answer to your question of the trial in India, and I think we'll present some of that in -- with our partners at Aurigene, but the trial is enrolling patients predominantly at 1 dose, which is 800-milligram doses, the current treatment that they've done so far. If there is other dosing and other dosing schedules that we believe, based on the Phase I trial, the ongoing Phase I trial here, that would be more advantageous, then there's an opportunity to integrate and incorporate that into the Phase II trial as well. But it is really not a dose escalation in the India study.
Adnan Shaukat Butt - Senior Analyst
Ali, in Phase II on the [update]?
Ali Fattaey - President, CEO & Director
And then, sorry, in the context of which one is likely to -- we see both of them as fantastic opportunities to get access to patients, and in particular in India, which not only immunotherapy treatment-naive, but patients in earlier lines of treatment, is a significant advantage for us.
Adnan Shaukat Butt - Senior Analyst
The reason I ask is because, clearly, the exposure is being increased in the Phase I study. Am I right?
Ali Fattaey - President, CEO & Director
In the -- our preliminary data from the current cohort that I described using 600-milligram twice-daily dosing, to us, appears to be a clear improvement in exposure for the patients. And obviously, we are in discussion with our colleagues at Aurigene in terms of how to integrate that in their -- in the study as well. That's correct, Adnan.
Adnan Shaukat Butt - Senior Analyst
Okay. I'll follow up later. But let me ask one on 907. The language seems very optimistic. In terms of next steps, what is, specifically, the company waiting on?
Ali Fattaey - President, CEO & Director
As I indicated, yes, you are correct, we are very optimistic and have always been optimistic with the level of clinical benefit that CUDC-907 seems to provide. I think we are further emboldened with the recent publications of the other trial reports that I mentioned, including the REFINE study, which really was not available at the time that we did the interim analysis of the Phase II trial for CUDC-907. These study really indicate that, in general, relapsed/refractory DLBCL patients do extremely poorly and even more poorly when they have a MYC-altered diagnosis, or their prognosis is very low in terms of their overall survival benefit. When we compare our data of over a year of just duration of response, that's a significant improvement with -- over what we see as a single-digit months of median overall survival for the patients. So yes, we're -- we've continued to be optimistic and we're further emboldened with these data. We have been discussing -- as indicated previously and today, we are in discussions with the regulatory authorities to really define and establish a consensus path for what a right study is for CUDC-907 for its pivotal path. In addition, as I mentioned, we are preparing with commercial manufacturing as well as diagnostic development discussions to ensure that we can -- once the trial is designed and agreed on, to be able to have all elements hitting on time to really put the drug on its registration path for CUDC-907.
Adnan Shaukat Butt - Senior Analyst
Just one clarification. So your discussions with the FDA have not yet concluded, and you will update The Street or update us when they are finalized. Is that fair?
Ali Fattaey - President, CEO & Director
That's correct.
Operator
The next question comes from Brian Skorney with Robert Baird.
Brian Peter Skorney - Senior Research Analyst
Just really on CA-170. I know at SITC, the number of patients that were presented were 39. Just when we think about the continued dose escalation that you guys are doing, I guess, first question is, how many additional patients will we see at the next update from that 39 worth of data? Do you have any estimate in terms of how many patients' worth of data we can get from the Aurigene Phase II? And I know at SITC, one of the concerns was just enrolling patients who are I/O-naive who seemed to be pretty far progressed. And we didn't see a lot of -- I think less than half of the patients made it really past 1 month. So I was just wondering in terms of additional patient enrollment, how you're handling, trying to get patients in who may be able to tolerate getting drug for a little longer than a month so you have greater follow-up.
Ali Fattaey - President, CEO & Director
Sure. Thank you, Brian, for the question. Let me answer it for you maybe in 2 parts. One is the concept of the types of patients that we're enrolling. And of course, I agreed that in the initial parts of the dose escalation, and I would say that includes the earlier doses before we really are at these later, more high-exposure doses, it is correct that a number of the patients, and in particular, patients in the U.S. that we had been enrolling, have fairly advanced disease and have had a significant number, obviously, over 5 or more prior treatments -- regimens and prior treatments, which in a sense, although they are I/O naive, they've fairly heavily pretreated. I think more recently, including the patients that we have been successful in enrolling in Korea and in certain places in Europe, including Spain, have had fewer prior treatment regimens, which does help us in that scenario, and they're immunotherapy treatment-naive. In India in particular, and this was one of the advantages that we saw and Aurigene has been successful, obviously, in carrying out this strategy, is not only enrolling patients of high interest and them being immunotherapy treatment-naive, there are earlier lines of treatment as well, so no more than 3 prior treatments is really allowed in the Phase II trial in India. So that's with respect to the quality of the patients or prior treatment rounds as well as them all now being immunotherapy treatment-naive. With respect to numbers, I think from the Phase I trial at the time that we would come to provide more updates, it would be certainly upwards of 50 patients for you to be able to see from the Curis side. And not to jump in terms of Aurigene's, their own update in this regard, but we would certainly expect over 20 or more patients from the Phase II trial to have had significant follow-up and multiple cycles of treatment by the midyear time point for us to be able to assess the drug in the Phase I and the Phase II trial. I do also want to point out what we described, this newer findings of -- so that's the Phase I and the Phase II that's ongoing, and those are 2 opportunities. We do believe this newer findings of VISTA expression, fairly significant VISTA expression, on some patients' tumor cells may provide a fairly good opportunity for us to go selectively look at those patients specifically and select them for enrollment. No plans yet for us to update that, but it is a place where we are actually exploring so that, that can provide a third avenue for us for a further development of CA-170, in addition to the Phase I and the Phase II trial in India.
Operator
The next question comes from Santhosh Palani with Cowen.
Santhosh Palani - Associate
So maybe a couple on CA-170 and one on CUDC-907. The CA-170, you did mention that you guys are dose-escalating and also looking at the BID schedule of the 600 and possibly then into 900. Can you talk to us, as you increase exposures, are you seeing modulation in pharmacodynamics, especially with respect to immunomodulation, and whether that is giving you the comfort that potentially expanding in those higher dose levels of higher exposures could lead to antitumor activity?
Ali Fattaey - President, CEO & Director
Santhosh, thank you for your question. With regards to the BID dosing, it's a little early for us to comment on the pharmacodynamics yet just because they're in process in a sense. We really don't expect to see anything different. As we indicated, we did see fairly significant pharmacodynamic activity in the once-daily dosing already. As I mentioned, 6 out of the 10 patients that we had tissue for analysis had a very significant increase in -- or they had increase in their CD8-positive cytotoxic T-cells. But that data is a little early for the BID dosing, and obviously, we have an interest in evaluating that as well. So no updates on that front at this point. From a pharmacokinetic -- right. From the pharmacokinetic, though, just so I can reiterate it, we do see a fairly good significant advantage, as in a sense, it's keeping the steady state levels of the drug at a very high level in a continuous manner. So in a sense, we've eliminated trough levels for this drug to a great extent.
Santhosh Palani - Associate
I see, with the bigger BID dosing, yes?
Ali Fattaey - President, CEO & Director
With the BID [dosing] substantially with the BID dosing.
Santhosh Palani - Associate
That makes sense, yes. So maybe -- so Ali, you actually brought up this point, and it is quite striking to see that, for example, in the patients you have enrolled, there are 7 [median] prior lines of therapy. So can you walk us through what should be the expectation, even for checkpoint inhibitors, like nivolumab or pembrolizumab, then those are provided in earlier lines of treatment, this is really late lines of treatments, like the patients you are enrolling with respect to what's been observed so far in literature. And so to make a more fair comparison in terms of what you've seen with what's been observed with antibodies.
Ali Fattaey - President, CEO & Director
No. It's actually an excellent point. And I think -- I appreciate you asking the question. It's -- we are actually putting that data together and going back and have looked at the -- realistically, the Phase I data for the anti-PD1 antibodies in particular to look at the patient benefit that was observed because, obviously, we're getting a little bit spoiled now comparing to fully vetted, approved drugs in Phase III trials, fairly established and optimized dose for them versus a Phase I trial for a dose escalation of our drug. But one that I can tell you, for example, when you've looked at this one, in melanoma, we do see, obviously, with anti-PD1 drugs, they do have a very good benefit. And in fact, in the front-line setting, they have benefited excess of 25% of patients, getting an objective response. But really, in the second line treatment, that objective response drops into the very low teens. So you are correct that as patients go through multiple cycles of non-immunotherapy treatment, they do appear to do slightly worse -- or at worse, or the response rates aren't as high. Which means the opportunity for seeing it in a Phase I trial of uncollected patients in a dose escalation is further reduced. So it's a good point. Allow us to put the data together, and perhaps, we'll present that in that light as well in a more fair comparison of what should be expected for CA-170.
Santhosh Palani - Associate
Got it. And can you talk to how the India trial could potentially help [us] in the sense that there, you could potentially now enroll in more earlier lines of I/O-naive patients, and maybe that presents a more representative data set in terms of what you have -- as you mentioned, kind of spoiled seeing with the more, like, the front and second line data sets from antibodies.
Ali Fattaey - President, CEO & Director
Yes, sure. And as we just noted with -- in response to Brian's questions just before yours, the trial, the Phase II trial that Aurigene is conducting in India. And again, I'm, in some respect, speaking on behalf of their trial that they're conducting there. But it's designed -- and the way that we designed it with them was to get patients who have done earlier line of treatment, no more than 3 prior. The earlier, the better, they're allowed to come in, into this study. And we really do look to be able to get that population of patients, not just immunotherapy treatment-naive, but with very few. The less, the better, but no more than 3 prior treatment regimens before they come into a CA-170 trial. So that should help us with access to both earlier-line patients as well as them being immunotherapy treatment-naive. The other thing is that we will get access and do get access to patients that are really difficult now in the U.S. or other centers, including MSI-high patients, which are obviously in high demand, we do have an opportunity to get access to that. Obviously, that can provide a significantly better chances of seeing significant clinical benefit in those patients.
Santhosh Palani - Associate
Got it. Just one last question on 170. So can you talk to us a little bit about pre- and post-biopsy requirements? And how many pairs do you have at this point with the Phase I trial? And whether it's mandated in the India trial.
Ali Fattaey - President, CEO & Director
Yes. It's a good question. In the Phase I trial, we did mandate it for this later stages of the dose escalation. If you recall, the initial first 3 or 4 cohorts were single-patient and it was not mandatory. But since the 400-milligram dose, which is a 3 plus 3 design from there in the Phase I trial dose escalation, pre and post has been mandatory, obviously, with the exception that if it's -- could provide a risk for the patients, then physicians can ask us not to do that. In India as well, that is an important part of it, and we do ask for the collection of patient samples in there as well. We are likely to hold those and run them more as a batch as opposed to them coming on in the same sort of -- as they're enrolled. But patient sample access in India is also an important part of the Phase II trial.
Santhosh Palani - Associate
Sorry. I had just one more question on 170. So have you guys submitted any abstracts or anything for ASCO? Is ASCO an event where we will see an update for the Phase I study?
Ali Fattaey - President, CEO & Director
We would like to present -- so rather than indicating -- or that we've submitted an abstract or not, but we would like to present somewhere around midyear. A scientific conference would obviously be preferred, an update on the clinical experience with CA-170, including the Phase I trial as well as the Phase II trial India experience as well.
Santhosh Palani - Associate
Got it. And just one question on CUDC-907. So based on the -- you mentioned that based on the recent studies and the literature you guys have looked at in terms of what's available for MYC-altered DLBCL patients and comparing that efficacy to what you observed with your Phase II trial, it seems like there is really no good control arm if we are thinking about a randomized trial as a potential pivotal trial. So can you clarify that when you're thinking about a potential registrational trial, based on what information you have, are we primarily looking at a single arm trial at this point, with probably response rate and maybe somewhat of a durability as a primary endpoint?
Ali Fattaey - President, CEO & Director
It's a good point. So maybe answer the first part of your question with respect to the historical controls. You are correct. There is very little, in fact, data available that looks at relapsed/refractory DLBCL patients in terms of how they've done. And then more importantly, less -- certainly a lot less on MYC-altered, specifically, relapsed/refractory DLBCL patients. Our read of all of the available data, including the ones that I mentioned in the REFINE study as well as the CORAL -- the REFINE analysis and the CORAL study, really says that the MYC alteration is an extremely poor prognosis for the patients all throughout the treatment, from front line, post-transplant, post-second line and certainly bad in the relapsed/refractory setting. But the historical available data is small, so that is a correct statement. We do think there is -- just in the context of a study for CUDC-907, I should point out recalling that the Phase II trial that we ran, the interim analysis, we looked at it at approximately 15 MYC-positive patients. The Phase II trial itself is designed as 100 MYC-altered positive patients to be analyzed as an endpoint, the endpoint being response rate and durable responses. We do think that's a viable path and nonrandomized study that compares to historical. We do think that's a path and that is part of our thinking and discussion. At the same time, we do think about a randomized study, because in the end, we will still need a randomized study that will look at CUDC-907 as compared to available therapies. Available therapies, as you point out, is realistically nothing other than experimental or doublets of chemotherapy. We have thought through both a nonrandomized as well as a randomized study. We do think there is nonrandomized opportunity, including, obviously, the Phase II trial that is not fully enrolled yet at this point. Those are all parts of our discussions at this point. We will provide -- right. Santhosh, we will provide updates once our discussions with the FDA is concluded or is at a point that we feel comfortable being able to present it to the outside as well as the full development path for CUDC-907.
Operator
(Operator Instructions) The next question comes from Peter Lawson with SunTrust Robinson Humphrey.
Peter Richard Lawson - Director
Just on CA-170. Do you think you're at the right dose in India for Phase II? Because it sounds like there's a good chance that you could up the dose in India.
Ali Fattaey - President, CEO & Director
It's a good -- Peter, and thank you for question. It's always the biggest quandary of a Phase I trial, especially for a drug that does not have adverse events that we would be dosing to MTD to determine and triangulate, in a sense, what is the right dose. And as we've always indicated, adverse events can help us to an extent; pharmacokinetics, which has been a good driver for us so far, is a good metric; the pharmacodynamic analysis, and of course, any patient benefit have all gone into our thinking. I do think we are at a fairly significant exposure. So thinking about dose, I do think, and we collectively think, 800-milligram dose is a significant exposure that can be significantly enhanced by twice-daily dosing. So the reason I'm answering your question that way is both a question of the dose as well as the schedule. And we do, at this point, believe and prefer the twice-daily dosing schedule, and have been in discussion with our colleagues in Aurigene as well to implement BID dosing within that study as well in the Phase II trial in India.
Peter Richard Lawson - Director
Do you think the data we see kind of midyear from Phase II would be at the single dosing or double dosing?
Ali Fattaey - President, CEO & Director
A little too early at this stage. Obviously, some of these changes would require amendments, and so we are hopeful that we can show you both sets of possible data. At this stage, we do think there will be a significant numbers of patients in India that would have gone through multiple cycles of treatment. How many of them would've had different -- whether it's once-daily versus BID, it's really too early to tell at this point, Peter.
Peter Richard Lawson - Director
Got you. And then how many patients do you already have enrolled in India?
Ali Fattaey - President, CEO & Director
I think that's -- so I want to be respectful of our colleagues at Aurigene, I've already probably discussed that a little bit more since than -- since they've really not had the opportunity to present this. Just allow us to say there are patients being enrolled. And it's a -- since it's not a dose escalation, patients come in at multiple sites that they now have open and enroll, and they've been fairly successful in both the enthusiasm in India as well as their ability to get trial sites, very high quality trial sites up and getting patients in at this stage.
Peter Richard Lawson - Director
Great. Just finally just on 907. When do you think we could see the FDA update? Is that still this year? Or do you think it's kind of midyear? Or just timing around that would be excellent.
Ali Fattaey - President, CEO & Director
Sure. I think towards the end of the year last year, we had guided for you and our colleagues. Obviously, we would like it to be as close to the end of Q1, and that's really still our expectations, if it's just on the other side of the end of Q1. So it's fairly shortly that we would come back and try and update you and everyone else with regards to our discussions as well as better outline, what our development path looks like for CUDC-907. What I do want you to go away with, though, is that we are in full preparation for committing and conducting these studies and getting 907 on its registration path.
Operator
And this concludes our question-and-answer session. I would like to turn the conference back over to the company's President and Chief Executive Officer, Dr. Ali Fattaey, for any closing remarks.
Ali Fattaey - President, CEO & Director
Thank you. Thank you, everyone. At this point, I'd like to thank the Curis team for their hard work in advancing our drug candidates -- or I should say their drug candidates; and our partners, Aurigene, for the productive relationship that we have with them and all the work that they're doing in development of these drugs in collaboration with us.
I'd also like to thank our partners, Genentech and Roche, for the work with commercialization of Erivedge. As you noted from Jim's comments, that Erivedge has had a consistent more than 20% year-over-year growth in its commercial sales, and we see that as the commitment that Genentech and Roche have to that drug.
We also would like to thank our investigators for their support with the development of our drug candidates, and most importantly, the patients and their families that participate in the trials of our drug candidates and making them a reality for other patients as well.
Thanks, everyone.
Operator
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