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Incyte Corp (INCY 0.19%)
Q4Â 2019 Earnings Call
Feb 13, 2020, 8:00 a.m. ET
Contents:
- Prepared Remarks
- Questions and Answers
- Call Participants
Prepared Remarks:
Operator
Greetings and welcome to the Incyte Fourth Quarter and Year End 2019 Earnings Conference Call. [Operator Instructions]
It is now my pleasure to introduce your host, Mike Booth, Head of Investor Relations for Incyte. Please go ahead, sir.
Michael Booth -- Head of Investor Relations
Thank you, Kevin. Good morning and welcome to Incyte fourth quarter and full year 2019 earnings conference call and webcast. The slides used today are available for download on the Investor section of incyte.com. I am joined on the call today by Herve, Barry, Steven and Christiana who will deliver our prepared remarks, and by Dash, who will join us for the Q&A session. [Operator Instructions]
Before we begin, I'd like to remind you that some of the statements made during the call today are forward-looking statements, including statements regarding our expectations for 2020 guidance, the commercialization of our products and our development plans for the compounds in our pipeline as well as the development plans of our collaboration partners. These forward-looking statements are subject to a number of risks and uncertainties that may cause our actual results to differ materially including those described in our 10-Q for the quarter ended September 30th, 2019 and from time to time in our other SEC documents. It is also important to note that our recently announced collaboration with MorphoSys for the global development and commercialization of tafasitamab is subject to clearance by antitrust authorities, and therefore any statements we may make about the collaboration and tafasitamab are conditioned on such clearance.
We'll now begin the call with Herve.
Herve Hoppenot -- Chairman, President and Chief Executive Officer
Thank you, Mike and good morning, everyone. So 2019 was another year marked by strong commercial performance including surpassing $2 billion in annual revenue for the first time. In addition, we continue to advance our R&D portfolio and make progress toward our strategic goal of diversification and growth. During the year, we achieved 13 of the 15 key goals we laid out this time last year, including the approval and successful launch of Jakafi in steroid-refractory acute GVHD. Whilst the results of the GRAVITAS-301 trial of itacitinib was disappointing, we announced positive result of the Phase 3 REACH2 trial, we submitted the NDA for pemigatinib based on strong updated data and we are very pleased to recently report positive top line Phase 3 results from rux cream in atopic dermatitis.
In addition to our internal portfolio, we continued to seek external assets that could complement our business. Our recent collaboration with MorphoSys for tafasitamab represents a strong fit with our portfolio, and we expect to be able to capitalize on our commercial expertise in the US and Europe.
Turning now to our commercial performance in 2019, we had another year of robust top line growth. Product and royalty revenues grew 22% year-over-year with growth coming from all four sources. Jakafi was up 21%, Jakavi royalties up 16%, Iclusig up 13%, and Olumiant royalties doubled to $80 million.
Slide 5 shows the revenue momentum over the last several years. Product and royalty revenues have more than tripled since 2016. Jakafi with a four year CAGR of 29%, remains a significant revenue driver and non-Jakafi revenues have shown over 50% compounded growth over the same period. Two new molecules, both of which were discovered at Incyte are currently under priority review at the FDA, and these are highlighted on slide 6. Both have Breakthrough Therapy designation from the FDA. The PDUFA date for pemigatinib is May 30th, and we expect the FDA decision on Novartis application for the approval of capmatinib in around six months' time. The capmatinib economics to Incyte include royalties in the range of 12% to 14% on global net sales by Novartis and over $500 million in potential milestone.
Tafasitamab, from our recently announced collaboration with MorphoSys, is a sub-molecule currently under FDA review. We see CD19 inhibition with an Fc-engineered antibody as a unique mechanism of action that is fundamental to the treatment of B-cell malignancies. We believe that tafasitamab can become a very important part of our oncology portfolio and provides both the near-term opportunities through the potential launch in DLBCL where the BLA was submitted late last year and the MAA is expected to be submitted mid this year as well as significant potential upside in the medium to longer term. Tafasitamab fits very well with our current commercial hematology footprint and thus will enable us to capitalize on our significant commercial capabilities in US and Europe.
Turning now to the key development and commercial priorities for 2020, we have the three potential new product approval this year that I have already mentioned and we also expect to submit the NDA for rux cream in atopic dermatitis before the end of the year. We also expect to continue the momentum within our LIMBER program with the initiation of the first pivotal combination development trial as well as important data from the once-a-day formulation of ruxolitinib. On the commercial side, we will work to drive continued Jakafi growth in all three indications while also ensuring that we are ready to pursue successful launches of pemigatinib and tafasitamab.
I will now pass to Barry for more detail on both 2019 Jakafi performance as well as our commercial preparations for pemi and tafa.
Barry P. Flannelly -- Executive Vice President and General Manager of US
Thank you, Herve, and good morning, everyone. In the fourth quarter of 2019, Jakafi grew 23% year-over-year to $466 million. Patient demand continued to drive the uptake of Jakafi and growth was strong across all three indications. Jakafi has grown consistently in total patients treated and net sales for each of the past several years fueled by growth across all indications. The 2020 net product revenue guidance we provided for Jakafi today reflects a continuation of this growth in patients and in top line sales to a range of $1.88 billion to $1.95 billion.
Slide 11 also highlights the key priorities for our US team this year. These priorities include continuing the growth of total patients treated in myelofibrosis, increasing the number of patients on therapy in polycythemia vera where we recently launched a nationwide disease awareness campaign and continuing the momentum in GVHD where we have seen strong traction since the launch in the steroid refractory acute setting.
We look forward to the presentation of data from REACH2 in the Presidential Symposium at the EBMT Meeting next month and to the results of REACH3 in the second half of this year. REACH3 is a randomized Phase 3 trial of Jakafi versus best available therapy in steroid refractory chronic GVHD. In addition, we are also planning for the potential launches of both tafasitamab and pemigatinib. We expect to be able to leverage our commercial expertise for both compounds and we will be ready to launch immediately if approved by the FDA.
I'll turn the call over to Steven for our clinical updates.
Steven H. Stein -- Executive Vice President and Chief Medical Officer
Thanks, Barry and good morning, everyone. At the beginning of 2019, we had laid out a list of key R&D goals for the year and I'm pleased to say that we achieved most of what we set out to do. While the recent results of GRAVITAS-301 was disappointing, we were able to report multiple successes last year. Some highlights include the positive top line result reported for the randomized REACH2 trial of ruxolitinib in steroid-refractory acute graft-versus-host disease.
The submission of an NDA for pemigatinib in cholangiocarcinoma and the initiation of pivotal trials for ruxolitinib cream in both the atopic dermatitis and vitiligo. We recently announced that the first of two Phase 3 trials evaluating ruxolitinib cream in atopic dermatitis met its primary endpoint and I'll cover this on the next slide. We were pleased to announce that our pivotal Phase 3 TRuE-AD2 study achieved its primary endpoint of proportion of patients with an IGA treatment success following eight weeks of therapy. This is the first of two identical pivotal trial, and we expect the results of TRuE-AD1 later in the first quarter.
In terms of study design, TRuE-AD2 recruited approximately 600 patients with mild to moderate atopic dermatitis. Inclusion criteria included an age range of 12 to 75 years of age and IGA score of two to three and a percentage body surface area affected of 3% to 20%. Patients were randomized 2 to 2 to 1, to 0.75% rux cream BID, 1.5% rux cream BID and a vehicle cream respectively and were in therapy for eight weeks, at which point all eligible patients could either switch to or continue on 0.75% or 1.5% rux cream BID for the long-term safety extension period. In the Phase 3 TRuE-AD2 study and for both doses, the efficacy data as measured in the primary and secondary endpoints, as well as the safety profile are consistent with previous data from our Phase 2 program, which as a reminder were presented at EADV in 2018 and have since been published in manuscript form in JACI.
As required by the FDA for dermatologic studies, long-term safety data are being collected and we continue to expect to submit the NDA for ruxolitinib cream in Q4 of this calendar year. I wanted to take this opportunity to briefly walk through the summary clinical development program for tafasitamab with MorphoSys, we intend to pursue development in both relapse refractory and front-line diffuse large B-cell lymphoma as well as in relapsed/refractory CLL and other non-Hodgkin's lymphomas.
For relapsed/refractory diffuse large B-cell lymphoma, L-MIND was the basis for the BLA submission seeking approval of the combination of tafasitamab plus lenalidomide. The B-MIND Phase 3 study is also under way, assessing tafa versus rituximab both on top of bendamustine. The futility analysis with B-MIND was passed in late 2019 and primary completion is estimated for 2022. Tafa is also been evaluated in front-line diffuse large B-cell lymphoma. The safety portion of the FIRST-MIND study is expected to be completed later this year, whereupon we expect to start the pivotal portion of the program. As it relates to relapsed/refractory CLL and other non-Hodgkin's lymphomas based on some promising data of tafa in combination with the PI3-kinase delta inhibitor, in the COSMOS trial, we expect to initiate a trial of tafa plus our own PI3-kinase delta inhibitor parsaclisib in 2020.
Moving on to our lumber project on slide 16, which is our initiative focused on expanding our leadership within the MPNs beyond ruxolitinib. Later this year, we expect initial bio availability and bioequivalence data for once-a-day ruxolitinib which is an important step toward a potential launch in 2022. We expect to begin proof-of-concept combination trials of ruxolitinib with both our BET and L2 inhibitors during this year, and we also plan to initiate a pivotal trial combining ruxolitinib with parsaclisib in myelofibrosis patients with a sub-optimal response to ruxolitinib monotherapy based on encouraging proof-of-concept data. This initiation remarked the first pivotal trial within the lumber program.
With that, I would like to turn the call over to Christiana for the financial update.
Christiana Stamoulis -- Executive Vice President and Chief Financial Officer
Thank you, Steven and good morning, everyone. The financial update this morning will include GAAP and non-GAAP numbers. For a full reconciliation of GAAP to non-GAAP, please refer to slides 25 and 26 in the backup section of the deck and to the press release we issued this morning. Our fourth quarter results reflect continued strong revenue growth across all products, with total product and royalty revenues of $579 million representing an increase of 24% over the fourth quarter of 2018. This is comprised of $466 million in Jakafi and $24 million in Iclusig net product revenues, $65 million in Jakavi royalties from Novartis and $24 million in Olumiant royalties from Lilly.
Our total cost and expenses for the quarter on a non-GAAP basis of $434 million increased by 10% from the prior-year quarter. As you can see the growth rate in total costs and expenses was well below the growth rate in product and royalty revenues. Ongoing R&D expense for the quarter was $282 million on a non-GAAP basis, representing a 3% increase from the prior year quarter. This was primarily due to our existing pipeline programs, progressing to later stages of development and it was partially offset by our election to end additional co-funding of development of baricitinib with Lilly.
SG&A expense for the quarter was $123 million on a non-GAAP basis, representing a 27% increase over the prior-year quarter. This was primarily due to an increase in the commercialization efforts related to Jakafi. Looking at the full year 2019 results, total products and royalty revenues of $2.08 billion grew 22%, while total cost and expenses stayed relatively flat at $1.55 billion on a non-GAAP basis.
As a result, non-GAAP operating income increased by 88% from $325 million in 2018 to $610 million in 2019. Looking at this trend from 2016 [Phonetic] through 2019, the growth in our product and royalty revenues has exceeded the growth in both our ongoing R&D expense and SG&A expense on a non-GAAP basis, leading to higher operating leverage and reflecting our commitment to disciplined management of our financial resources.
Moving on to 2020, I will now discuss the key components of our 2020 guidance. Please note that the guidance we provide today does not include the financial impact of our recently announced collaboration with MorphoSys, which has not yet closed and also excludes the impact of any additional potential future strategic transactions.
For the full year 2020, on both the GAAP and non-GAAP basis, we expect net product revenue for Jakafi to be in the range of $1.88 billion to $1.95 billion, driven by continued growth across all indications. For Iclusig, we expect net product revenue to be in the range of $100 million to $105 million. As in previous years, we will not be providing guidance for milestone or royalty revenues.
We expect our gross to net adjustment for 2020 to be approximately 16% for Jakafi with adjustment in the first quarter of the year being higher relative to both the previous quarter and subsequent quarters. We expect the GAAP R&D expense to be in the range of $1.21 billion to $1.28 billion and non-GAAP R&D expense to range from $1.08 billion to $1.15 billion. The increase compared to 2019 is primarily driven by our existing pipeline programs progressing through later stages of development. We expect the GAAP SG&A expense to be in the range of $505 million to $535 million and non-GAAP SG&A expense to range from $447 million to $477 million.
The increase compared to 2019 is primarily driven by efforts to support the expansion of our commercial portfolio and investment in infrastructure to support the continued growth of the business. Both in the case of R&D and SG&A, the non-GAAP expense guidance excludes estimated stock-based compensation expense.
I will now turn the call back to Herve for further discussion of the year ahead.
Herve Hoppenot -- Chairman, President and Chief Executive Officer
Thank you, Christiana. So 2019 was a strong year in terms of business performance and pipeline progression. And as you can see on slide 23, 2020 is shaping up to be another busy and important year for Incyte. In my opening remarks, I laid out our key priorities for the year, and here we have highlighted the five key regulatory updated that we expect, which are the FDA decision pemigatinib, tafasitamab and capmatinib to the MAA submission of tafa and the NDA submission of rux cream. We also look forward to providing numerous set of data announcement as the year progresses.
Operator, that concludes our prepared remark and please give your instruction and open the call for Q&A.
Questions and Answers:
Operator
Certainly. We will now be conducting a question-and-answer session. [Operator Instructions] Our first question today is coming from Brian Abrahams from RBC. Your line is now live.
Brian Abrahams -- RBC Capital Markets -- Analyst
Hey, guys. Thanks very much for taking my question and congrats on the continued commercial performance and on the TRuE-AD2 results. On topical rux, I was wondering if you could talk about your expectations for whether there might be ultimately a boxed warning on the label with respect to class safety, what if any impact that, you think that might have on dermatologists' views and uptake of the agent ultimately, and I guess along those lines, any type of work that you have done or expect to do over the course of the program to fully characterize systemic exposure and maybe the relative importance of that as you think about a future label there and adoption? Thanks.
Steven H. Stein -- Executive Vice President and Chief Medical Officer
Brian, it's Steven. Thank you for your question. The data that we've already presented both at EADV and then published in a paper in JACI shows the safety profile to-date for our topical rux cream. Obviously, what you referenced in terms of box warning has to-date largely applied to compounds that give you substantial systemic exposure and what we've already published, we have little to no systemic exposure. We have a very clean safety profile. So given all of the above. We don't think that we're going to be in that territory of having a box warning obviously ultimately it's up to the FDA and not to us. But again, given the little to no systemic exposure seen to date a very clean safety profile. We don't expect that, and then we'll update the safety as this year goes along with more long-term data, but that's our expectation currently.
Brian Abrahams -- RBC Capital Markets -- Analyst
Thanks, Steven. I'll hop back in the queue.
Operator
Thank you. Our next question is coming from Marc Frahm from Cowen and Company. Your line is now live.
Marc Frahm -- Cowen and Company -- Analyst
Hey, guys, thanks for taking my question. This is for Herve and Christiana, just with the MorphoSys deal, assuming this closes, you'll have about three products, probably launching the next year and a half or so. So I'm just wondering kind of the appetite for continued M&A and should we expect that you might do more larger deals like the MorphoSys deal for late-stage assets? Or do you think you're kind of done on that end of the pipeline and we should really be more focused on kind of smaller earlier stage deals going forward?
Christiana Stamoulis -- Executive Vice President and Chief Financial Officer
Hi, Marc. Thank you for the question. So in terms of the bidding strategy, it hasn't really changed from what it was before the MorphoSys deal. We are continuing to look at the external assets to complement or supplement our internal activities and the focus is similar to what it was before. Looking at programs that could help diversify and continue to grow revenue, programs that allow us to capitalize on our existing capabilities in oncology, hem, MPNs, of course, and more on the bolt-on type of transactions versus larger deals. And when you look from a capacity point of view, we ended the year with $2.1 billion of cash on the balance sheet. Pro forma for the MorphoSys transaction is $1.2 billion, so we still have capacity to continue to look for those bolt-on type of transactions.
Marc Frahm -- Cowen and Company -- Analyst
Great. Thank you.
Operator
Thank you. Our next question is coming from Tyler Van Buren from Piper Sandler. Your line is now live.
Tyler Van Buren -- Piper Sandler -- Analyst
Hey, guys, good morning. Thanks for taking the question. With respect to the TRuE-AD results in the press release, there is one line which appears pretty deliberate and was repeated in the press release this morning, where you guys state that the overall efficacy and safety profile of ruxolitinib cream is consistent with previous data. So, and I know you guys can't speak about the data, but I guess just with respect to that statement, could you say that it's consistent with the effect size compared to vehicle as we think about it relative to prior data and then just as a quick follow-up, just can you talk about the potential conferences that you guys might present data at and I'm assuming that you would wait for the results from TRuE-AD1 as well.
Steven H. Stein -- Executive Vice President and Chief Medical Officer
Yes. It's Steven. Thanks for your question. So the -- just the back part of your question first. The TRuE-AD1 results will come sometime this quarter and obviously we are waiting them and we expect them to be in line with TRuE-AD2 and then again with a proof of concept data. What we are trying to communicate as much as we can without actually given the actual results, because we have to protect future meetings when we -- where we want to present the data as soon as possible, is that directionally and quantitatively the active arms, the 0.75% and 1.5% were in line with the primary and secondary efficacy endpoint seen in the Phase 2 data and the vehicle was as well, which is very encouraging.
So when we went from 150 patient proof-of-concept study to a 600 patient Phase 3 in TRuE-AD2, we are seeing the same quantitative results in terms of the primary and secondary efficacy as well as the safety. And that's as much as we can say to try and protect both the presentation and the future manuscript which we hope to be able to do soon.
Tyler Van Buren -- Piper Sandler -- Analyst
That's great. Thank you.
Operator
Thank you. Our next question is coming from Cory Kasimov from J.P. Morgan. Your line is now live.
Cory Kasimov -- J.P. Morgan -- Analyst
Hey, good morning, guys. Thanks for taking the question. I want to ask on Jakafi, just with regard to your 2020 guidance, looks like it implies growth of I think it was 12% to 16%, can you just qualitatively discuss how much of this is coming from GVHD versus the longer-term indications of MF and PV and then also, can you just comment on what happened with the Jakafi RESET study in ET? It's on the -- in the press release that recruitment was discontinued. So curious what happened on that front. Thank you.
Barry P. Flannelly -- Executive Vice President and General Manager of US
Hey, Cory, it's Barry. I'll let Steven handle the RESET study. But as far as the growth goes, we're very encouraged by the approval and launch in acute-steroid refractory GVHD for Jakafi that continues to now add a significant portion to the overall net sales, but myelofibrosis continues to be the largest portion of our net sales, while PV, total percentage of patients continues to increase at a faster rate than MF, but those two indications, MF and PV will drive the indication, is obviously we talked before, whether it's -- whether it's acute GVHD or chronic GVHD, the total population in the United States in the steroid refractory setting is about 3,000 patients and obviously you know that it's a much larger patient population. So MF and PV will continue to drive the growth toward $3 billion ultimately, but GVHD is now a significant contributor to that. Steven?
Steven H. Stein -- Executive Vice President and Chief Medical Officer
Cory, in terms of the RESET study, so that's looking at ruxolitinib in a central thrombocythemia, the study design was a little bit complicated because of the composite endpoint. So the endpoint that was required in negotiation with the regulatory agencies, was to obtain control of blood counts in terms of both the white blood cell count and the platelet count together, and not a -- an event endpoint like thrombosis. So what was required in terms of eligibility was patients coming on who had either intolerance or progressed on hydroxyurea, had a white blood cell count above 11,000 and had no prior exposure to anagrelide, because the study was randomized against anagrelide. And trying that for more than a year in fact longer, we're just unable to enroll sufficient number of patients in a timely manner.
We looked at various amendments to try and get around this, but ultimately, because of that composite endpoint, we couldn't do that in terms of either the white count or prior anagrelide. So the current thinking is to change it to a publication strategy, finish up the study and publish it, but we will, it will not be of registration quality in terms of its size.
Cory Kasimov -- J.P. Morgan -- Analyst
Okay, thank you. Appreciate it.
Operator
Thank you. Our next question is coming from Vikram Purohit from Morgan Stanley. Your line is now live.
Vikram Purohit -- Morgan Stanley -- Analyst
Good morning. Thanks for taking my question. So, I had a question on your commercialization plans for rux cream. So you previously noted that, you're still thinking through your options when it comes to whether you'd like to pursue commercialization independently or to find a partner for Europe. And I just wanted to see if your thinking here has evolved or changed at all based on the first set of Phase 3 data you saw based on the recent readout.
Herve Hoppenot -- Chairman, President and Chief Executive Officer
So, the recent -- Herve here. So the recent readout is, if you see improving our optimism regarding the chance of getting regulatory approval in the US where, as you know, we have decided to go by ourself. Regarding the rest of the world, as I said previously, things have not really changed. I mean we would be, there is a high probability we'll have a partnership regarding Asia. And in Europe, we are still in the process of looking at what options we have either going alone licensing out completely or some form of a partnership and each of the three option is still up in regarding Europe.
Vikram Purohit -- Morgan Stanley -- Analyst
Okay, understood. Thanks.
Operator
Thank you. Our next question is coming from Evan Seigerman from Credit Suisse. Your line is now live.
Evan Seigerman -- Credit Suisse -- Analyst
Hi all, thank you for taking my question. Congrats on the progress. So I noticed in the press release, there was some updates on the low dose itacitinib trial in ulcerative colitis, and also parsaclisib and Sjogren's disease. Can you help me understand why the UC trial was discontinued and what you saw in the data from the Sjogren's trial not to warrant on continuation?
Steven H. Stein -- Executive Vice President and Chief Medical Officer
Sure. Evan, it's Steven. Thanks for your question. In terms of the low dose itacitinib, in inflammatory bowel diseases, particularly ulcerative colitis. Again, it was around operational dynamics in the competitive space. So we were unable to enroll sufficient numbers of patients to keep progressing the study as well as given the competitive space with other compounds with similar mechanism has been way ahead. We elected at the end of last year to no longer pursue that program.
In terms of Sjogren's, again a difficult medical condition in terms of measuring endpoints and getting a sufficient spread versus standard of care, or even placebo. We're not seeing enough of the activity to warrant going forward into a full registration program. It was a proof of concept study and in our opinion, we didn't get to the proof of concept, we wanted to pursue registration further there. Across inflammation and autoimmunity, one of the beauties of the program is we have this, pipeline of targeted therapy agents, immuno-oncology agents, all of which were primarily in the beginning, developed for either hematology, oncology indications.
But because of their mechanism of action, either in terms of a JAK inhibition or B-cell inhibition with delta inhibitors, they lend themselves to conditions in the inflam autoimmune setting where those mechanisms are important. So we have the ability to conduct multiple proof-of-concept studies very efficiently and then make decisions to go forward or not. And in those two instances it didn't meet our own internal expectations to pursue registration programs.
Evan Seigerman -- Credit Suisse -- Analyst
All right. Thank you for the color.
Operator
Thank you. Our next question is coming from Jay Olson from Oppenheimer. Your line is now live.
Jay Olson -- Oppenheimer -- Analyst
Hey, thanks for taking the question and congratulations on the financial performance in 2019. You delivered impressive non-GAAP operating margin growth last year and since you're now investing in multiple new product launches over the next year or two, do you expect to continue growing operating margins at the same rate? And where do you see them going longer term? And then maybe if I could just ask a follow-up question on QD Jakafi, do you expect any clinical benefits versus BID Jakafi, and if so, would those benefits appear in the label? Thanks.
Christiana Stamoulis -- Executive Vice President and Chief Financial Officer
Hi, Jay, it's Christiana. Let me take the part on the margins, as you can see both in the case of 2019 and with the guidance that we provided, for 2020, we are looking to continue to invest in supporting our portfolio both on the R&D and commercial side, but the growth on the expense front is slower than that of the top line which is what we had indicated in the past, and as you can see we are in line with what we had said. We will continue to invest in our activities in the Company on the R&D front, as we have discussed in the past, we will be looking to invest based on the quality of the programs and if data supports moving programs into development and later stages of development, we will continue to do that, but the trend that we see is continuing to have growth on the expense side being below that of the top line.
Steven H. Stein -- Executive Vice President and Chief Medical Officer
Jay, in terms of your question for the one-stay formulation, so the work with that is progressing very well, the intent is to follow a 505(b) route terms of first obtaining in a sufficient bio availability in terms of PK of the different strengths. And then moving on to prove those individual different once-a-day strength, meet the bio-equivalence in terms of the ratios on the FDA guidance for each of the strengths you're matching it up with.
So there is no in the beginning, it's not built around clinical differentiation, if you will. It's built around BA/BE route to obtain approval in that 2022 timeframe. We do know from a publication in 2011, with a single once-daily strength, the 25 milligram XR strength, not surprisingly, the PK profile was flatter. So there was less of a Cmax which we think is related to the anemia seen in myelofibrosis and it may be ultimately less anemia with these products, that will need to be proven down the pike once we've finished the once-a-day formulation work, once you've taken it through the BA/BE route and gotten approved, then we could potentially do clinically differentiating work to see if there is a flatter profile with all the strengths and ultimately less anemia and then make that claim and get it in a label. So it's a very stepwise approach.
Jay Olson -- Oppenheimer -- Analyst
Great. Thank you much.
Herve Hoppenot -- Chairman, President and Chief Executive Officer
If I may add on the QD strategy, the strategy around the QD that there is obviously the practical aspect of QD, there is this potential clinical benefit, maybe on anemia, we just discussed. And there is the ability to combine with other mechanism that have a once-a-day regimen. So this project by itself has a lot of potential, positive consequences on the management of the life cycle of Jakafi.
Jay Olson -- Oppenheimer -- Analyst
Super helpful. Thank you.
Operator
Thank you. Our next question is coming from Salveen Richter from Goldman Sachs. Your line is now live.
Andrea Tan -- Goldman Sachs -- Analyst
Great. Thanks for taking our questions. It's Andrea on for Salveen. The first one as you look to the upcoming launch for pemigatinib and cholangiocarcinoma, can you talk a little bit more about how you've approached building out a solid tumor sales force and the efforts that might be needed for patient or physician education to improve the disease awareness, as well as the need for diagnostic screening. And then I have a follow-up.
Barry P. Flannelly -- Executive Vice President and General Manager of US
Sure, Andrea. This is Barry. First, we are actually launching in cholangiocarcinoma, and these patients population that has FGFR2 fusions rearrangements, we are already educating, providing healthcare professionals, getting them ready to, in fact always test cholangiocarcinoma patients for various mutations alterations and so forth. So those educational efforts are ongoing now. In terms of FTEs that we put in the field, we do have a few more FTEs in the field. But the way it works in the United States, we have now 147 representatives across the United States and they call on community oncologist and academic centers across the nation.
Even though there is people who are specific to him and solid tumor, most of the community oncologist offices throughout the United States treat both, and certainly, geographically, we had all of the centers, so we will have a dedicated team that's specifically trained on solid tumors and particularly pemigatinib and cholangiocarcinoma and of course the need for NGS testing or diagnostic testing to remind all of these healthcare professionals that are treating these patients. But in fact we have oncology clinical nurse educators to providing educational services. We have medical science liaisons that are all trained.
So each of the teams have already been trained and we have ongoing training for the sales force. So we think we're in solid shape, and we're going to continue to educate all healthcare professionals, about the need for diagnostic testing to best help these patients.
Andrea Tan -- Goldman Sachs -- Analyst
Thanks, Barry. Maybe just another one for you then on the MorphoSys' potential launch. Just what additional add to the infrastructure is needed there and where do you see points of synergies or components that can be leveraged from your existing network?
Barry P. Flannelly -- Executive Vice President and General Manager of US
Well, Andrea, as you know, until we close, we can't really plan together with our future partners at MorphoSys. So, we've been thinking about this a lot. And independently, we've been planning about what we actually need, but the ability to guide -- now, on the other hand, we certainly have a great deal of experience in hem malignancies, certainly here in Wilmington, Delaware and throughout the United States. So we're very confident that we know the space, the lymphoma space very well. We just have to take time, wait a couple of more weeks to actually get together and sit down with our partners on MorphoSys about the real details that we can do.
Andrea Tan -- Goldman Sachs -- Analyst
Got it. Thank you so much.
Operator
Thank you. The next question is coming from Alethia Young from Cantor Fitzgerald. Your line is alive.
Alethia Young -- Cantor Fitzgerald -- Analyst
Hey, guys. Thanks for taking the questions and congrats on all the progress. One, can you just talk a little bit about the status of the CITADEL program and when we could expect data there? And then, basically, kind of your thoughts and your increased conviction -- and I saw some data, obviously, from parsaclisib and ruxolitinib, but just maybe talk a little bit about your increased conviction in that combo and then also the other kind of combos in the LIMBER program as well. Thank you.
Steven H. Stein -- Executive Vice President and Chief Medical Officer
Alethia, it's Steven. Thanks for the question. So, the CITADEL program has three components in terms of B-cell malignancies. There's a follicular lymphoma study, 203 CITADEL, a marginal zone lymphoma study, 204, and then, a mantle cell lymphoma study, 205. Essentially, we've completed recruitment across all those studies. There may be just a few patients left on one to be done. And now, we're in the follow-up phase. As we've presented this data multiple times because they're open label, single-arm studies, we're very encouraged by the high activity of parsaclisib across these B-cell malignancies. And now, it's really a wait for the duration of response data. And then, they all could be potentially accelerated approval routes in the United States, given the designs of the study. And we may have to then go on and do confirmatory studies as well.
So we'll get the bulk of all of their data with a long follow-up through this calendar year and then look at potential submissions across the board. But we're very encouraged by that program and what we've done with it. In terms of the myelofibrosis combinations, as we announced in our prepared remarks, the most advanced is the rux plus PI3 delta combination. We also presented that data a number of times. We now have the updated data set looking at the experiments we did in terms of weekly versus daily dosing.
And we're most encouraged by the daily dosing arm of the proof-of-concept study, and that's why we'll be going forward this year in a pivotal registration route with that combination. We still have to work out the details with regulatory agencies, but the likely population, as we said in our prepared remarks, are patients who have been on rux, probably for approximately three months, but don't have a sufficient response and are then randomized to rux plus PI3 delta versus rux alone in some sort of registration fashion with sufficient numbers.
And given the effect we've seen from the addition of delta in that population to date where we saw further clean volume response, particularly with the daily arm, as well as symptom response, obviously, we're encouraged by going forward to a pivotal program there.
In terms of the rest of the LIMBER program, it's also a big year as we announced at JP Morgan. We're beginning and we've resurrected our BET program based on the external environment and what's happening with BET inhibitors in myelofibrosis. So, we're a go with our own BET inhibitor this year. We'll do the monotherapy safety work and go as quickly as we can to combination with rux there. And then, our L2 to program as well, which is targeted around alleviating the anemia through a hepcidin mechanism in combination with rux and that'll also go to combination this year. And then, we'll get further proof-of-concept data for rux plus PIM inhibition.
So, obviously, an extremely important development program to us, given the importance of rux in myeloproliferative neoplasms in general and an active year in terms of initiating a pivotal study, getting further proof-of-concept study and starting two new mechanisms.
Alethia Young -- Cantor Fitzgerald -- Analyst
Thank you.
Operator
Thank you. [Operator Instructions] Our next question is coming from Mara Goldstein from Mizuho. Your line is now alive.
Mara Goldstein -- Mizuho Securities -- Analyst
Great. Thank you very much for taking the question. Just to circle back on the previous question on the rux plus parsaclisib in myelofibrosis. Can you characterize what that proof of concept was and also what is considered an insufficient response to rux in the clinical trial, but also in clinical practice today?
Steven H. Stein -- Executive Vice President and Chief Medical Officer
Hey, Mara. Thanks your question. It's a good question because, as you look across not only us, but everybody else doing studies in this arena, you have to be very careful of doing cross study comparisons and make sure that you actually do an apple-to-apple comparisons, particularly in terms of how people define the population they study, in terms of the amount of prior rux exposure, what constituted either refractory or disease that's progressing and how much was allowed and then was rux actually discontinued versus was it continued.
And the reason I mentioned the latter is just to be clear, is that if you discontinue rux and then allow patients to rebound, if you will, in terms of their spleen and symptoms, just reintroducing rux again you'll see quite a substantial effect. And we've documented that before and published that. So, you have to be very, very careful of the populations you're looking at.
Our proof-of-concept work from a definition point of view with rux plus PI3 delta was defined as patients who had been on at least six months of ruxolitinib for at least two months of stable dosing and then were showing insufficient response in terms of spleen or symptoms and then allowed to come on to the combination without discontinuing rux. With that, we showed a further detriment in terms of spleen volume reduction. That was better with daily dosing rather than weekly dosing.
If you're asking the exact quantitative excursion in terms of spleen volume response, that's a good question. In the frontline setting, obviously, given our own approval in the setting, we have now established the endpoint of spleen volume reduction of 35% or greater done through a measurement like MRI, for example, which is not subjective as the probable end point that regulators will use going forward as well as validated symptom scores.
In the latter line setting, one could argue that that may be too high a bar to get to and maybe 20% or more improvement in spleen volume reduction with concurrent symptom improvement may get you across the finish line or other endpoints like transfusion independence. But that's sort of where the field is right now. I think for the moment, first line studies will still require spleen volume responses as a primary endpoint with symptoms as a secondary end point. And we've established with our own label what that bar is with the COMFORT studies and that's what people will have to use going forward.
In the other settings, there may be somewhat more creative end points that you could do as long as you prove to regulators and patients that you're actually getting clinical benefit.
Mara Goldstein -- Mizuho Securities -- Analyst
Okay. Thank you very much.
Operator
Thank you. Our next question is coming from Christopher Marai from Nomura Instinet. Your line is now live.
Christopher Marai -- Nomura Instinet -- Analyst
Hey, good morning. Thanks for taking the question. I'm wondering if you could elaborate a little bit on the vehicle performance in TRuE-AD that you saw. Just being cognizant that the Eucrisa Phase 3 saw some variability in that vehicle performance. How do you feel, I guess, given that type of variability about chance for success of TRuE-AD1? And maybe, if you could, just remind us of some of your coloring assumptions around that? Thank you.
Steven H. Stein -- Executive Vice President and Chief Medical Officer
Chris, it's Steven. So, if you look at the atopic dermatitis arena in general, they're awesome vehicles that on their own, without "active ingredient," will have a response rate because of the emollient effect of different vehicles that will then result in improvement in the underlying condition.
Our vehicle is cream based, just like our actual active product. And you saw in the proof-of-concept 150-patient study, our vehicle response rate was 10% or less percentage point. Just to give you by way of comparison a number, but not to make a direct comparison, Eucrisa in their registration studies had to use an ointment-based vehicle because of their constitution of their active product. And their ointment-based vehicle response rate was north of 20%.
So we don't expect -- and that's why, earlier when we spoke, we said our results are consistent with our proof-of-concept data to date directionally and quantitatively. We expect the same vehicle cream response rate in our TRuE-AD1 and TRuE-AD2 studies that we saw in our proof-of-concept work. And that's where we stand right now. Obviously, we want to share this with you as soon as we can in an appropriate meeting.
Christopher Marai -- Nomura Instinet -- Analyst
Thank you. I appreciate that. And just one last on ruxo guidance. How much GVHD acute or chronic is sort of in those numbers? Thanks.
Steven H. Stein -- Executive Vice President and Chief Medical Officer
I'm sorry, could you repeat the question. I didn't repeat the question.
Christopher Marai -- Nomura Instinet -- Analyst
In terms of your rux guidance for the year, how much of that, if any, accounts for use in GVHD? Thank you.
Barry P. Flannelly -- Executive Vice President and General Manager of US
Well, we were hoping for a particular number of patients. I think I said before that there is 3,000 patients total, so refractory GVHD, acute GVHD is about 1,500 patients. We think we are approaching about 1,000 patients -- it's hard to actually for GVHD because the drug oftentimes is given in a hospital and we don't get as much detail as you do when you get a prescription on the outside. So GVHD is an important part of the guidance for this year. But overwhelmingly, it's the continued growth in myelofibrosis which is really going very well and the continued growth for patients with polycythemia vera, again, which is continuing -- going very well. But Jakafi in acute steroid-refractory GVHD is becoming one of the most used, if not most used drug, other than steroids in treatment of these patients.
Christopher Marai -- Nomura Instinet -- Analyst
Thank you.
Operator
Thank you. We've reached the end of our question-and-answer session. I'd like to turn the floor back over for any further or closing comments.
Herve Hoppenot -- Chairman, President and Chief Executive Officer
Thank you. And thank you all for your time today and for your question. So we look forward to seeing you at upcoming investor and medical conferences. But for now, we thank you again for your participation to the call today. Thank you and goodbye.
Operator
[Operator Closing Remarks]
Duration: 51 minutes
Call participants:
Michael Booth -- Head of Investor Relations
Herve Hoppenot -- Chairman, President and Chief Executive Officer
Barry P. Flannelly -- Executive Vice President and General Manager of US
Steven H. Stein -- Executive Vice President and Chief Medical Officer
Christiana Stamoulis -- Executive Vice President and Chief Financial Officer
Brian Abrahams -- RBC Capital Markets -- Analyst
Marc Frahm -- Cowen and Company -- Analyst
Tyler Van Buren -- Piper Sandler -- Analyst
Cory Kasimov -- J.P. Morgan -- Analyst
Vikram Purohit -- Morgan Stanley -- Analyst
Evan Seigerman -- Credit Suisse -- Analyst
Jay Olson -- Oppenheimer -- Analyst
Andrea Tan -- Goldman Sachs -- Analyst
Alethia Young -- Cantor Fitzgerald -- Analyst
Mara Goldstein -- Mizuho Securities -- Analyst
Christopher Marai -- Nomura Instinet -- Analyst
