This conference call transcript was computer generated and almost certianly contains errors. This transcript is provided for information purposes only.EarningsCall, LLC makes no representation about the accuracy of the aforementioned transcript, and you are cautioned not to place undue reliance on the information provided by the transcript.
Operator
Welcome to the Regeneron Pharmaceuticals First Quarter 2021 Earnings Conference Call. My name is Mary, and I will be your operator for today's call. At this time, all participants are in the listen-only mode. Later, we will conduct a question-and-answer session. Please note that this conference is being recorded. I will now turn the call over to Justin Holcomb, Vice President, Investor Relations. You may begin.
Mary
Thank you, Mary. Good morning, good afternoon, and good evening to everyone listening around the globe. Thank you for your interest in Regeneron Pharmaceuticals, and welcome to the first quarter 2021 conference call. An archive of this webcast will be available on our website. Joining me on the call today are Dr. Leonard Schleifer, founder, president, and chief executive officer, Dr. George Yancopoulos, co-founder, president, and chief scientific officer, Marion McCord, executive vice president and head of commercial, and Bob Landry, Executive Vice President and Chief Financial Officer. After our prepared remarks, we will open the call for Q&A. I would also like to remind you that remarks made on today's call include forward-looking statements about Regeneron. Such statements may include but are not limited to those related to Regeneron and its products and business, financial forecasts and guidance, development programs and related anticipated milestones, collaborations, finances, regulatory matters, payer coverage and reimbursement issues, intellectual property, pending litigation and other proceedings, and competition. Each forward-looking statement is subject to risks and uncertainties that could cause actual results and events to differ materially from those projected in that statement. A more complete description of these and other material risks can be found in Regeneron's filings with the United States Securities and Exchange Commission, including its Form 10-Q for the period ended March 31, 2021 – which we filed with the SEC earlier today. Regeneron does not undertake any obligation to update any forward-looking statements, whether as a result of new information, future events, or otherwise. In addition, please note that the GAAP and non-GAAP measures will be discussed in today's call. Information regarding our use of non-GAAP financial measures and a reconciliation of those measures to GAAP is available in our financial results press release, which can be accessed on our website. Once our call concludes, Bob Landry and the IR team will be available to answer further questions. With that, let me turn the call over to our President and Chief Executive Officer, Dr. Lenschleifer.
Mary
Thank you, Justin, and thank you to everyone joining today's call. We're off to a strong start in 2021, again delivering double-digit growth on the top and bottom lines. I'm immensely proud of all that Regeneron continues to accomplish in in the fight against COVID, and for patients suffering from a variety of diseases. Our performance highlights the continued evolution, diversification, and durability of our business as we enter a new phase of growth and new product launches. Strong performance begins with differentiated products that deliver real value for patients. Starting with ILEA, global net sales were nearly $2.2 billion, growing 17% compared to the prior year. In the U.S., sales grew 15%, reflecting continued positive momentum and execution on our strategy. We are confident in the ILEA business and expect it will remain a key growth driver for Regeneron for years to come. We are also very pleased with the performance of Dupixent in the quarter, where global sales approached $1.3 billion in and grew 48%. The brand is now annualizing sales in excess of $5 billion, yet we believe there remains considerable room for further market growth and penetration in atopic dermatitis, asthma, and chronic rhinosinusitis with nasal polyposis. With several additional potential indications in Phase III trials, such as eosinophilic esophagitis, and COPD, we are still in the early days of realizing the full potential of this unique pipeline in a product. In oncology, we are making steady progress with Libtyo as global net sales reached 101 million and grew 35% from the prior year. Importantly, in February, we secured two new FDA approvals for Libtyo in basal cell carcinoma, and in non-small cell lung cancer, which we anticipate will help fuel a new period of growth for this product that is a foundation to our oncology strategy. While still in very early days with these new launches, we are seeing encouraging signals on a variety of leading indicators from thought leaders, prescribers, payers, and patients. And last but not least, we were able to deliver significant phase three outcome data for our RegenCOVE program aimed at treating and preventing COVID-19 infections. As George will outline momentarily, we have now shown that our antibody cocktail dramatically reduces hospitalizations or death in non-hospitalized COVID-infected patients and reduces symptomatic infections when given as a preventative measure. We are seeking to update our emergency use authorization to reflect these new data and uses, as well as the lower 1.2 gram dose. Thinking longer term for RegenCov, we see an ongoing global need for treatment and chronic prevention of COVID disease. Despite high rates of vaccination, it's estimated that tens of millions will remain unvaccinated in the U.S. alone, And of those who are vaccinated, significant numbers will not mount a protective response, such as those who are immunocompromised or immunosuppressed. It is important to recognize Regeneron's and the biopharmaceutical industry at large response and ongoing actions in combating COVID-19. Breakthrough vaccines and treatments are having a profound impact on the health and well-being of people in the United States and around the globe. In addition, safe and effective vaccines and treatments are enabling economic recovery. All of these critical benefits come as a result of the investments that have been made in technologies over decades by both the public and private sectors. These profound effects highlight the importance of a healthy biopharmaceutical industry that fully incentivizes innovation, so that new solutions to emerging disease can rapidly be invented and deployed. We've also learned that these extraordinary approaches to preventing and treating COVID-19 can work only if people actually receive the vaccines or drugs. For example, an internal health economic analysis projected that tens of thousands of lives in the United States could be saved over the next several months if Regencov were fully deployed and given to all appropriate patients who are diagnosed with COVID-19 and at high risk for hospitalization or death. And this is a case where cost to patients is not an issue, as the government is providing the drug free of charge. Clearly, we have to better understand why a drug that has demonstrated overwhelming evidence for its ability to reduce hospitalizations or death by 70%, is an ample supply, has been endorsed by the NIH, has been authorized under an EUA by the FDA, and is free of charge to patients, is not being taken full advantage of. Regeneron is committed to collaborating with our healthcare partners to take optimal advantage of the Regencov cocktail potential health benefits. Overall, we are pleased in all that Regeneron has accomplished in the first three months of the year and look forward to continued momentum and progress across our diverse pipeline in the months to come. Now I will turn the call over to George.
George
Thank you, Len. With COVID-19 still in the headlines, I will start with our monoclonal antibody treatment, the RegenCo cocktail. We recently reported data from a large Phase III outcomes trial in the outpatient setting confirming that RegenCOV reduced the risk of hospitalization or death by 70% with both the 2.4 gram and the lower 1.2 gram doses. We are pleased that, based on these data, the NIH guidelines were updated in early April to include a strong recommendation for monoclonal antibody combinations to treat outpatients with mild or moderate COVID-19 as defined by the EUA criteria. We also recently reported data from a large two-part Phase III trial of RegenCOV with Part A in the preventative setting and Part B in recently infected patients. In Part A of the trial, RegenCo prevented 81% of symptomatic COVID-19 infections with 93% prevention after the first week. A supportive study in healthy volunteers that explored chronic dosing showed a similar 92% prevention of infection. Notably, these results were achieved with a convenient subcutaneous formulation. Chronic prevention with our antibody cocktail may prove to be critical in the ongoing battle against this virus. Despite high rates of vaccination, it is estimated that tens of millions of Americans will remain unvaccinated, thus at risk of future infection. In addition, it is estimated that millions of Americans will not mount an adequate response to vaccines. For example, immunocompromised individuals who are organ transplant patients or who suffer from certain cancers such as lymphomas, leukemias, and myelomas, or in immunosuppressant therapies for their autoimmune diseases, might all be candidates for chronic prevention using our antibody cocktail. Part B of this Phase III trial in recently infected patients showed that the subcutaneous administration of the 1.2 gram dose was also effective in reducing symptomatic disease and shortening disease duration. We are anticipating the existing EUA will be amended based upon the above data to include the 1.2 gram RegenCOV dose to allow the cocktail to be used for prevention and to include the subcutaneous formulation for ease of use. We believe the current data is supportive of a potential formal BLA approval by the FDA. I would like to remind everyone that outside of the United States, where some countries have an even more ongoing dire need for COVID-19 medicines, our partner Roche is rapidly expanding availability of the treatment. Last year, we anticipated that certain variants were likely to emerge and therefore designed our current cocktail, to be active against these variants. Experimental evidence suggests that our cocktail is indeed active against all current variants of concern. Similarly, in anticipation of future variants that may emerge, we are bringing additional antibodies to the clinic shortly. Moving on to ILEA, a recent NIH-sponsored protocol W trial in non-proliferative diabetic retinopathy patients confirmed results of our own panorama study. After two years, ILEA reduced vision-threatening complications by 68% compared to a group of patients who delayed treatment. A recent Regeneron follow-up analysis in the similar design panorama trial found that delaying treatment resulted in three times as many patients suffering prolonged vision loss compared to those receiving preventative ILEA treatment during a two-year period. A similar analysis has not yet been conducted for protocol W. Protocol W is the second study in diabetic retinopathy showing benefit of a less frequent ilea dosing regimen, and we are planning on filing to expand the U.S. ilea label by adding the 16-week dosing interval for appropriate patients in the second half of this year. By year end, we are expecting first data from the Phase II study testing a high dose of ilea in wet AMD. From these data, we can expect early reads on anatomic differences and drawing between the higher and lower dose at eight and potentially 12-week intervals. While the study data will not be definitive on durability measures, the Phase II study will help provide insights on what we might expect from the Phase III studies, which are testing dosing intervals out to 12 and 16 weeks. Importantly, in the 106 patients dosed in the open-label Phase II study so far, we haven't seen any concerning safety signals. The Phase III studies in wet AMD and in DME are expected to be fully enrolled by the second half of this year. Moving on to Dupixent in our immunology and inflammation portfolio. Dozens of recent presentations at key dermatology meetings highlight the ever-increasing scope of Dupixent efficacy and safety in patients as young as six years old, including rapid itch relief, sustained improvement in disease severity, and overall quality of life. Importantly, Dupixent is not an immunosuppressant. We have not seen an increased risk of serious infections with Dupixin. This mounting wall of data and physician experience fortifies our belief that Dupixin will remain the preferred choice for multiple type 2 inflammatory diseases. In the first quarter, we submitted data to support the use of Dupixin in children 6 to 11 years old with moderate to severe asthma. The BLI supplement has an FDA action date of October 21st of this year. A similar application has been submitted in the EU. We previously announced positive data in the Part A part of our Phase 3 trial of enosinophilic esophagitis, and Part B of this trial is fully enrolled. In addition, two Phase 3 trials of Dupixan and Type 2 COPD are actively enrolling patients. Our complementary program with our anti-IL-33 antibody, itapicumab, in a different group of COPD patients, former Spokers, is progressing with both Phase III trials now enrolling. We believe that this broad COPD program, including dupixin and idapicamab, may provide real benefit for many patients. Turning now to our novel approach to treat allergy by using cocktails of monoclonal antibodies to directly bind and inactivate the allergen. These cocktails are designed to act immediately and to be long-lasting. and to replace currently cumbersome approaches to allergy desensitization that involve years of multiple weekly injections. The anti-BETV1 antibody cocktail binds and inactivates the BETV1 allergen that causes Birch pollen allergy, one of the most common seasonal allergies that occur in the spring. Following Phase II data showing immediate and long-lasting effects against allergen challenge, we initiated a Phase III study, and results are expected later this year. Assuming success in the current study, we're planning to conduct a second phase three study during an upcoming birch pollen season. Regarding our similarly designed Fel D1 antibody cocktail for cat allergy, phase two data were presented earlier this year at a Quad AI meeting showing that single administration of the antibody cocktail prevented early asthma reactions in allergic patients and prevented lung function decline upon cat allergen exposure when compared to placebo. Following this positive data update, the first phase three trial in cat allergy is planned for later this year. We're enthusiastic about these novel additions to our inflammation immunology portfolio that could represent new groundbreaking ways to treat allergic diseases. Moving on to Liptio and our oncology portfolio. In the first quarter, Liptio was approved for the first line treatment of certain patients with non-small cell lung cancer. and for advanced basal cell carcinoma, each being crucial early milestones for our oncology strategy. In addition, a phase 3 study of Liptio in second-line cervical cancer was stopped early for an overwhelmingly positive overall survival benefit, a first for any systemic treatment in these patients. These data will be shared at an upcoming medical meeting, and regulatory submissions are planned for this year. Additionally, we look forward to sharing an expanded data set of theanolamab, our anti-LAG-3 program, at the upcoming ASCO meeting. Phenolamab is being studied in combination with Liptio in first-line melanoma. In the second half of this year, we anticipate results of an interim analysis for overall survival in our Phase III Liptio lung cancer chemotherapy combination study. Moving on to our bispecific portfolio. In multiple myeloma, our BCMA by C3 bispecific, for which we now hold exclusive development rights, is continuing through dose escalation and dose expansion. We expect to initiate new combination studies in earlier lines of multiple myeloma later this year. Regeneron is uniquely positioned to mix and match multiple modalities and targets with the hope of increasing deep responses we are already observing with the CD3 bispecific. We're planning to add a co-stim bispecific to our arsenal of clinical-stage multiple myeloma investigational therapies early next year. Moving to lymphoma, responses to our CD20 by CD3 bispecific OGEN-X demand demonstrate increasing durability. Regarding the partial clinical hold on this program, we have agreed to a path forward with the FDA, submitted the updated protocol, and are expected to hear back on lifting the partial hold in the very near term. Enrollment of the follicular lymphoma and diffuse large B-cell lymphoma cohorts of the Phase II pivotal intent trial should resume quickly thereafter. Additionally, testing of the Otranextamab subcutaneous formulation will start later this year, and the paired COST and bispecific combination is also on track to initiate within the next 12 months. Regarding our solid tumor efforts with our bispecific, ovarian cancer is the first indication for which we are already clinically testing two different types of bispecifics for the appropriate tumor target, MUX16. Dose escalation of our MUX16 by CD3 bispecific is ongoing, and we're hoping to share initial data next year, if not sooner. In the MUX16 by CD28 COSTIM study, patients are dosed in combination with Liptio, and dose escalation is ongoing. Combination of the CD3 and CD28 COSTIM bispecifics targeting MUX16 will start later this year, and it has the potential to be a game-changing strategy for treatment of these solid tumors. In prostate cancer, PSMA by CD28 is in dose escalation studies with Liptile, and we hope to share initial data next year or sooner. As seen in our other programs, we are planning on introducing a potentially complementary CD3 bispecific to the clinic later this year, rounding out a powerful and unique toolkit for prostate cancer currently considered unresponsive to immunotherapy. Regarding our early efforts in lung cancer and other solid tumors, Our EGFR by CD28 co-stim bispecific is in dose escalation phase, and patients are now being dosed in combination with Liptio. Our MET by MET bispecific antibody is in the dose expansion state. Recall that this study is enrolling non-small cell lung cancer patients with a broad selection of patients, including MET exon 14 gene mutations, gene amplification, and or elevated MET protein expressions. We believe our oncology portfolio is one of the most exciting in the field and has the potential to revolutionize the treatment of diverse, difficult-to-treat cancers. Finally, I would like to highlight our capabilities regarding the Regeneron Genetic Center and our genetics and medicines efforts. In addition to being able to discover and validate targets that we can address with our Velocimune antibody platform, we're working with our collaborators to develop three additional platforms that have the potential to generate new classes of genetics-based medicines. First, gene editing. We're eagerly awaiting initial results from the first systemic-based CRISPR approach to be announced mid-year by our collaborator, Intelia. If positive, these results will validate this gene editing platform for a host of genetic targets identified by the Regeneron Genetic Center and being investigated under our collaboration with Intelia. Second, we are also excited about our Alnylam collaboration with its validated siRNA platform approach that continually address complementary genetics targets. Our Alnylam target ALN-HSD directed to HSD17B13, a target discovered by the Regeneron Genetic Center, is now enrolling NASH patients. Additionally, we in Alnylam are collaborating on a series of follow-on targets, While the technology is currently validated for liver-directed therapeutic approaches, we are set to extend to eye and central nervous system targets. Our third genetic medicines approach involves viral gene therapy delivery and is another approach of significant interest and excitement at Regeneron. Our first gene therapy program is in collaboration with Decibel, focusing on targeting the ear. We and Decibel are planning to enter the clinic with DV-OTO next year. In addition to the AAVs targeting the ear, we are developing a platform for use in multiple other tissues of interest. With that, I would like to turn the call over to Marion.
Len
Thank you, George. We're off to an exciting start in 2021. Our expanded commercial portfolio includes three recent product and indication launches, and we continue to grow our largest brands, Alia, Dipixen, and Liptio, based on competitive and differentiated profiles. Beginning with ILEA, first quarter global net sales grew 17% year-over-year to nearly $2.2 billion. In the U.S., ILEA net sales grew 15% year-over-year to $1.35 billion, based on increased demand and a favorable comparison to the early weeks of the pandemic in the first quarter of 2020. ILEA is capturing category growth and continues to be the preferred treatment option. In the branded anti-VEGF category, ILEA has approximately 75 percent share and is approaching 50 percent of the combined branded and unbranded category. ILEA is differentiated by the combination of its efficacy, safety, dosing flexibility, and range of indications. In addition, physicians have considerable real-world experience with more than 40 million injections administered worldwide. Across the broader category, demand continues to improve in 2021 as patient flow normalizes and new patient volume grows. We are confident in our near and longer-term outlook based on favorable patient demographics, physician preference for ILEA, growth opportunities in diabetic eye disease, and future opportunities with our high-dose clinical program. Turning to Libtyle, First quarter global net sales grew to 101 million, with U.S. net sales of 69 million. The vast majority of first quarter sales were in cutaneous squamous cell carcinoma, where Liptio is the number one systemic treatment. We're excited by recent approvals in non-small cell lung cancer and basal cell carcinoma, or BCC, both of which represent meaningful growth opportunities for Liptio. In April, we deployed our expanded and highly experienced field force across these indications to extend our Leptio promotional impact. In lung cancer, we have heard from oncologists that Leptio is highly competitive based on the strength of our compelling clinical data and overall value proposition. Early launch indicators are encouraging with uptake evidence at top academic and community-based practices. We're advancing formulary placement, securing favorable payer coverage decisions, and growing overall market awareness. Importantly, Liptio was rapidly included in the NCCN guidelines with a Category 1 preferred rating. The NCCN guidelines have also been updated to include Liptio in BCC as the Category 2A option. Liptio is the only anti-PD-1 approved and advanced disease for this indication, Early feedback has been encouraging as physicians are eager to prescribe Liptio based on its efficacy and tolerability. Hedgehog inhibitors, despite being used as first-line treatment, may not be suitable for patients for long-term or repeat use. Liptio is an important new care alternative for BCC patients. In summary, our lung and BCC launches are progressing according to plan, and we are highly focused on ensuring that appropriate patients benefit from Liptio. Turning now to FKESA, which was also approved in the first quarter of 2021 and is in the initial launch phase. FKESA represents a novel and effective treatment for patients with homozygous familial hypercholesterolemia and is recognized by treating specialists as an improvement over the current standard of care. Patient demand is steadily building with multiple patients already initiated on therapy. Moving to Depixent, global net sales in the first quarter were $1.26 billion, representing 48% growth compared to the prior year. In the U.S., broad-based growth across all approved indications generated net sales of $962 million, with new patient starts now higher than pre-COVID levels. In atopic dermatitis, Dupixin's largest indication, prescribing continues to be strong across both moderate and severe disease and across age groups following our adolescent and pediatric launches. There's significant opportunity for continued growth based on remaining unmet need among eligible patients. Dupixent is the number one dermatologist prescribed biologic based on the depth and breadth of its long-term efficacy and safety profile. Turning to asthma, where we are actively preparing to launch in pediatric patients as young as six years of age later this year. Among adolescents and adults, we continue to meaningfully expand the number of Dupixent patient initiations driven by our extensive provider and patient educational efforts. In addition, demand is strong among ENTs and allergists for patients with nasal polyps. Dupixent is the fastest-growing biologic and respiratory disease in our approved indications, with substantial room for growth. I'd also like to highlight efforts supporting our antibody cocktail with Gencov. In the first quarter, we recorded U.S. net sales of $262 million, under the first contract with the U.S. government. RegenCOVE is currently authorized under an EUA in patients based on age and risk factors, which represent close to 40 percent of all adults diagnosed with COVID-19. We're focused on reducing bottlenecks and increasing utilization, particularly in states with high infection rates. Efforts include direct support to key facilities, medical education about RegenCOVE, partnering with third-party stakeholders, and educating consumers on the availability of antibody treatments. As George mentioned, we're preparing for a potential update of the RegenCOVE EUA to include prevention, as we hope to be able to address an unmet need for millions of patients who may be candidates for ongoing preventative treatment. Preventative therapy may also be important for those who have known COVID exposure and require very rapid protection. In summary, we delivered robust performance across our portfolio in the first quarter of the year. There's strong positive momentum from our in-line business, encouraging early signals from our recent launches, and substantial opportunity for continued diversified growth. Now I'll turn the call over to Bob.
George
Thanks, Mary. And good morning and afternoon to everyone listening to the call. My comments today are on financial results and outlook will be on a non-GAAP basis where applicable. As Len stated, Regeneron is off to a strong start in 2021 as we continue to execute across the business, delivering double-digit top and bottom-line growth in the first quarter. For the first quarter, total revenues grew 38% year-over-year to $2.5 billion, driven by growth in global ILEA sales, increased Sanofi collaboration profitability driven by Topixin, and sales of our RegenCove antibody cocktail. Diluted net income per share grew 50% year-over-year to $9.89 on net income of $1.1 billion. Excluding revenues related to RegenCove, Regeneron achieved 20% total revenue growth versus the prior year. As you heard from Marion, we completed our initial contract to supply RegenCove to the U.S. government in the first quarter. Assuming that we secure an updated EUA for the 1.2 gram treatment dose, we expect to deliver at least a million doses of Regencov at $2,100 per dose for our follow-on contract with the US government in the second quarter. I will now move to collaboration revenues, which were 754 million in the first quarter of 2021, compared to 528 million in the first quarter of 2020. Starting with the Bayer collaboration, Ex-US ILEA net product sales reported to us by Bayer were $824 million for the first quarter of 2021, representing growth of 21% on a reported basis and 12% on a constant currency basis compared to the prior year. Total Bayer collaboration revenue was $323 million, of which we recorded $309 million for our share of net profits from ILEA sales outside the U.S., Total Sanofi collaboration revenue was $365 million in the first quarter. Our share of the profits from the commercialization of Depixin and Kevzar was $261 million, which compares favorably to profits of $171 million in the prior year driven by Depixin. We recorded initial Roche collaboration revenues of $67 million for our share of gross profits from the distribution of the antibody cocktail by Roche outside of the U.S., Other revenue decreased to $50 million in the first quarter, compared to $63 million in the prior year. In 2021, we expect this line to be less than half of what we recorded in 2020 due to lower barter reimbursements for the Ebola and COVID-19 programs. Moving on to our operating expenses, starting with R&D. R&D increased 28% year-over-year to $673 million, primarily cashless. due to continued clinical development costs for our Regencove antibody cocktail. Next, SG&A expense increased 16% year-over-year to $355 million. The year-over-year increase was driven by commercial investments for Liptyo, costs related to the rollout of Regencove, and higher employee-related expenses. Cost of goods sold increased versus the prior year, from $70 million to $173 million, due to Regencove manufacturing costs. and prevalent manufacturing costs in the U.S., which were recorded by Sanofi in the first quarter of 2020. Additionally, in other income and expense, we recorded $4 million of expense compared to $25 million of income in the prior year. This is driven by interest expense related to our $2 billion debt issuance in August 2020 and lower investment returns on our existing cash and marketable securities. Finally, the effective tax rate was 10.5% in the first quarter of 2021. Included in this rate is the benefit achieved by a reduction in uncertain tax position liabilities related to the IRS audits of the 2015 and 2016 tax years. Shifting now to cash flow in the balance sheet. In the first quarter of 2021, Regeneron generated $553 million in free cash flow and ended the quarter with net cash and marketable securities of $5.1 billion. In the first quarter, we utilized $323 million of our $1.5 billion share repurchase authorization, and we remain opportunistic buyers in the market. I would now like to provide select updates to our 2021 guidance. A complete summary of our latest four-year guidance is available in our press release published earlier this morning. We are updating four-year 2021 guidance for COCM to be in the range of $660 to $730 million, The lower guidance range is related to the timing of contract manufacturing of Pralulant for Sanofi. We are also updating guidance for our 2021 non-GAAP effective tax rate to be in the range of 13% to 15%. The increase from prior guidance is driven by higher forecasted delivery of RegenCo under our second U.S. government contract, which is taxed at the U.S. statutory rate. In conclusion, Regeneron is off to a strong start in 2021 and continues to execute across all aspects of the business. We are well positioned for the remainder of 2021 and continue to make those investments necessary to ensure long-term growth. With that, I would now like to turn the call back to Justin.
Mary
Thank you, Bob. Mary, that concludes our prepared remarks. We'd now like to open the call for Q&A. With several callers in the queue, and to ensure that we are able to address as many as possible, we will answer just one question from each caller before moving to the next. Please go ahead, Mary.
Operator
Thank you. As a reminder, to ask a question, you will need to press star followed by one on your touchtone telephone. If your question has been answered or you wish to enjoy your question, press the pound key. Please stand by for your first question. Your first question comes from the line of Terence Flynn of Goldman Sachs. Your line is now open.
Terence Flynn
Great. Thanks so much for taking the question. I guess with respect to the competitive landscape for Dupixen, the JAK inhibitors have been delayed, but assuming they do reach the market later this year, including at the high dose, how are you guys thinking about that as a competitive headwind to Dupixen and maybe you know, as you think about the longer-term market opportunity, you could walk us through kind of where penetration stands right now in the adult and in the adolescent setting. Thank you.
Mary
Go ahead, Mary.
Len
Sure. So I'm happy to start off. First, let me say that, you know, we are seeing tremendous experience with Dupixin in the marketplace today, and this obviously is across indications, including atopic dermatitis, and also, very importantly, across age categories, which demonstrate not only the efficacy, the speed of action, the safety, the tolerability. We pay really close attention to competitors coming into the marketplace, and certainly, in the case of the JAK inhibitors, we're well aware of the multiple delays. Also, recent clinical data that is calling into question issues of safety, especially at the higher doses, but even at the lower doses, and the continuation of black box warnings You know, we hear from our key opinion leaders who use Depixent and see it as their mainstay of therapy currently and going forward with great confidence in the safety profile. This is a chronic therapy and certainly the risk of hematologic effects, malignancies, infection and so on are just not something that is tolerable for these patients when they have a tremendous alternative. So I think we feel very confident in our competitive profile going forward. And also remind that Depixent, you know, obviously based on its mode of action, has great efficacy across type 2 disease and other indications. Patients do sometimes have concomitant conditions. So on balance, we'll stay very close to this and to our key opinion leaders and specialists who are very, very confident in the profile of Depixent.
Mary
Yeah, I would just add two points to that. One is the safety will be particularly concerning, I think, for the long-term treatment of children. And so I think the safety profile that Dupixen has shown is really, frankly, it's almost unparalleled in terms of what you can do with an agent on the efficacy side and not have any significant concerns on the safety side. The other point in terms of the penetration, even if you look at how these markets have evolved when more agents have come on for rheumatoid arthritis and for psoriasis, the penetration is so low here that even with competition, there is room for market growth rather than direct fighting it out in terms of a fixed amount of market share. So we expect our profile safety, as Marion says, to be really paramount in treating physicians' minds, and we do think the low level of penetration thus far does leave room for growth nonetheless.
Mary
Great. Next question, please.
Operator
Next question comes from the line of Chris Raymond of Piper Chandler. Your line is now open.
Chris Raymond
Yeah, thanks. You know, just maybe another question on Dupixent. So our checks... indicate there's a lot of interest in AD with regard to add-on therapy and that there's a lot of Dupixent patients who may not be necessarily optimally managed but are not exactly failing. So there's a lot of interest, I guess, with maybe looking at a topical jack or some other therapy. I'm just kind of curious if you guys have thought about maybe proactively looking at some combo work just to sort of ensure that Dupixent maintains its role as a core.
Mary
Well, George might want to comment if we have any interest in it, but in terms of the commercial side of this, you know, when you talk to patients, the kind of patients we're treating, moderate to severe atopic dermatitis, you know, they have lesions over a large fraction of their body. I can't remember exactly what it was in our trials, but What we're seeing out there commercially is large fractions of the body are affected by this disease. And so I think that adding topicals perhaps, but people are actually trying to get away from having to lather up over their entire body. The other thing about Tupixin that we can never forget is that the broad aspects of approvals across lots of allergic diseases with a growing number is very important because these diseases do tend to run in groups. There are many people who have asthma and atopic dermatitis or asthma and nasal polyposis or atopic dermatitis and other allergic diseases which we're studying. So I think that our broad profile across lots of other diseases is also going to give us a very strong competitive position.
Mary
Next question, please.
Len
Yeah, I just was going to add real quickly. This is Miriam. On that question, I just wanted to share as well that in the market experience, we do, and obviously look at this very carefully through market research, have a very high level of satisfaction with Dupixent for patients with atopic dermatitis. So I just want to make sure that there's not an impression left, that there are a lot of patients necessarily looking for something more who are treated with dipixen for atopic dermatitis.
Mary
Good, Ed. Next question, please.
Operator
Next question comes from Corey Basimov of KP Morgan. Your line is now open.
Corey Basimov
Hey, good morning, guys. Thank you for taking my question. Wanted to ask on the COVID front, if you have a sense of the remaining hurdles and anticipated changes timing for the low-dose emergency use authorization for Regencov, and are you continuing to ship high doses of the antibody cocktail as you wait on it? Thank you.
Mary
Right. Thanks for that question, Corey. We've been in active discussions and productive discussions with the FDA. Obviously, one never knows what they're going to do or exactly when they're going to do it, but we anticipate an action by the FDA today sometime in the next several weeks in terms of the lower 1.2-gram dose. I think from there they will turn their attention to the prevention data, which they have in front of them, as well as the sub-Q data, as well as the chronic prevention opportunities. So I can assure you the FDA has been working really hard. We're in constant contact with them, answering questions, going over things regularly, And as I said, we expect something to anticipate a decision sometime in the next several weeks.
Corey Basimov
Great. Thank you.
Mary
Next question, please. And, Corey, I'm sorry. Of course, we're continuing to supply the market. There's no shortage of product out there in terms of people needing to be treated now can be treated with the 2.4-gram dose, and there's ample product available. Perfect. Thank you.
Operator
Next question comes from Jeffrey Parches of SVB Living. Your line is now open.
Jeffrey Parches
So many things to ask questions about in so little time. Bob, operating margin 48% to 49% the last couple of quarters. What would that have been without COVID-2, the antibody, and is it sustainable at the current level? And I'll squeeze in, and is the tax rate sustainable at the current level as well? Thanks.
George
Yeah, I mean, I'll talk about the tax rate. I mean, certainly there's a lot to be played out with regards to what's going to happen on the tax rate. You heard what I said, you know, we're obviously a little lower than our four-year guidance. We did have, you know, a favorable outcome with regards to uncertain tax positions that we were able to reverse, which kind of drove a little lower in the quarter on that front. On operating margins, Jeff, you know, I guess the one piece that's not so transparent to everybody is we're still incurring a lot of R&D as it pertains to RegenCove with regards to the trials, the enrollment numbers. So I don't want people to come away and say, you know, as a result of, you know, the Roche benefit we got in the RegenCove product sales that, you know, without that, the margins wouldn't have been as good. But we did incur a lot of expenses pertaining to that that are within the R&D line that we just don't specifically talk about. you know, the business on its own, you know, excluding RegenCo was 20% top line and 35% EBIT. Okay, so again, it shows you the underlying strength as, you know, as you've heard from Len at the very beginning of his words in terms of how we're performing. We think the operating margin isn't, you know, can continue to stay at that and improve at that level. I mean, certainly it's the leverage on depiction, right, to the extent that You know, you saw that Sanofi did a terrific job, XUS, where we're starting to get a little momentum in terms of XUS sales. So to the extent that that will continue to play out, we'll continue to get good operating margins associated with that, and then that will drive our overall margins.
Mary
Great. Thanks, Bob. Thanks, Jeff. Next question, please.
Operator
Next question comes from Yatin Suneha of Guggenheim Partners. The line is now open.
Yatin Suneha
Hey, guys, thank you for taking my question. I have a question on the deployment of cash. Could you maybe talk about the top priorities? Are there areas where you would like to collaborate or bring in capabilities, and how should we think about BD? Thank you.
George
Sure. You know, our cash balance on a net cash basis is sitting at 5.1, and we're roughly at $7 billion on a gross basis. And, again, you know, we like the flexibility that it affords us. I always need to make sure that internally we have enough to obviously support the internal R&D, of which, you know, we continue to go after different modalities, and that's kind of tied into our second leg of the stool where, you know, where we don't have kind of in-house capability on everything. It's great that we have the capability for George and the BT team to go out and get other technologies, whether it be, you know, the Intellia-driven technology on CRISPR or El Nilem, and the like, and we're continuing to play heavy in that space, and we need to make sure that things we go after, you know, are most likely going to be early stage. We're not looking for kind of transformative kind of M&A deals on that front as of right now, and we continue to stay hungry in that place with the right opportunities. And then as you saw, you know, we did $325 million of share buybacks. We have a $1.5 billion program that we authorized in January. You know, we are opportunistic buyers when we think, you know, the intrinsic value of where we see it compared to where the market is currently playing. We are going to take advantage of that delta, and we did such that in the first quarter, and we're continuing to do that on that front. And, you know, that continues to be an active play for us. Thanks, Bob. Next question, please.
Operator
Next question comes from Japanese Bank of America. Your line is now open.
spk08
Hey, guys, this is Alec on for Jeff. Thanks for taking our question. Just one on ILEA. Obviously, scripts and sales are holding up fairly well despite COVID-19 and new market entrance and WAMD. But looking to lifecycle management over the next few years, do you see this primarily coming from the high-dose formulation? And on this, is there a venue or an update on timing for data from the Candela study? Thanks.
Mary
Yeah, I think that the – Life cycle management continues to be from more data, the kind of data that we generated in diabetic retinopathy with the panorama and Protocol W, which George reviewed, I think are very important results. And so I think that will drive more treatment in that area. In terms of the high dose, I think you heard from George that we'll get some of the preliminary Phase II data later this year. And then for next entrance, we have readying for the clinic, a newer version, if you will, which we'll unveil for you when we get that into the clinic.
Mary
Next question, please.
Operator
Next question comes from Robin Karnoska of TrueList. Your line is now open.
Robin Karnoska
Guys, thanks for taking the question. I'm scared to ask this question, but You know, what is your latest thoughts on counter-detailing for asthma? What are you hearing from the specific centers that you think, you know, might be more likely to utilize the product? And how do you counter-detail and prevent that from taking any share from ILEA? Thanks.
Len
Sure. So let me say, first of all, you know, obviously the product you mentioned is not approved and still at the stage where the clinical data is being reviewed. As I mentioned to some of you who were in the last call, as we look at the clinical profile today of fristimab, we do not see a threat to ilea. Certainly some of the recent data had some questions on clinical profile and certainly with an increase in IOI rate question on the safety profile. I think the net conclusion on the key opinion leaders that I spoke to in the retinal community was that they didn't see an obvious benefit to the product and perhaps even questions in matching the safety, durability, and clinical profile of ileo cross-indications. I'll mention that certainly with ileo, one of the important attributes is the ability to treat and extend therapy. And there's some elements of that clinical trial design that constrained ileo's dosing interval We actually hear on a regular basis that one of the reasons why ILEA is performing so well in the first quarter of 2021 and, frankly, performed so well last year is because of its efficacy and the ability to treat and extend for patients. We remain very confident in ILEA's profile against the competitive product you mentioned.
Mary
Next question, please.
Operator
Next question comes from Alicia Young of Panther Feeds Gerald. Your line is now open.
Alicia Young
Hey, guys. Thanks for taking my question, and congrats on all the progress this quarter. I just want to talk a little bit about the 6211 asthma expansion indication. Just can you kind of talk about how you're thinking about uptake there? It feels like it could be pretty robust in light of the safety profile and the fact that, you know, kids are on their atopic march as well. So I just wanted to get your perspective on that. Thanks.
Len
Sure. You mentioned something that we look forward to and will be very much prepared for the pediatric launch for Depixent. in the asthma market later this year. We do see this as a tremendous opportunities for these really young patients, you know, age six and up who are struggling today and, you know, will benefit tremendously from the Dupixent ability to improve their, you know, their airway function and reduce exacerbations and, you know, help these patients and their families with these children living more normal and healthy lives. So it's very important. And then at the same time, recognizing Depixent's safety profile. So at the same time, we take care of the asthma. And as Len mentioned before, the possibility of concomitant disease is associated with type 2 disease. So we do feel that this will be a very important indication launch. We look forward to it. And it once again confirms the efficacy and the safety of Depixent.
Mary
Thanks, Mary. And next question, please.
Operator
Next question comes from Mohit Bansal of Citigroup. Your line is now open.
George
Great. Thanks for taking my question and comparing the progress. One more question on the high-dose ILEA. So we do know that back in the days, Roche also ran a trial, a Harvard trial, which did not work out well. I understand that this trial design is a little bit different. It is not a superiority trial that you are running. But could that be helpful? That's the first question. I mean, scientifically, Why would a higher dose would result into some kind of better benefit, in your opinion? Just to give us some confidence there. Thank you.
George
Yeah, I think that basically a higher dose will simply, the notion is, extend the duration of action. That would be the primary thing that we're looking at. So obviously it allows for longer duration of action because you will go longer until you achieve the minimally effective dose. So the notion is, can we show that we will now have increased numbers of patients who can do well with every 12-week dosing or every 16-week dosing? So that's the major goal of testing the higher dose.
Mary
Yeah, and as George is saying, you're trying to extend the actions. But if you look at an interval where in some patients, let's say, you take them at an every eight-week interval, there's still some people who are not completely dry because the drug probably isn't lasting the full eight weeks even, and so you might see more drying as a manifestation of the longer action. So there are a couple of ways to slice, but surely you're looking to put more drug and have it last longer.
George
Got it. Super helpful. Thank you.
Mary
Next question, please.
Operator
Next question comes from . Your line is now open.
Brian Skourney
Great. Maryam, maybe for you on asthma, can you give us a sense, what's the share now for Dupuy and asthma? And we understand that some physicians, but Senra has been very aggressive on pricing. What can you do to, you know, offset some of that growth in Senra? Thank you.
Len
Sure. Happy to take your question. You know, first I'll say we're very pleased with the performance of Depixent, both in terms of initiations and total scripts. We haven't given details of share by indication, so I'll stay away from that specificity today. But as you can see from our total performance and the, you know, the data shared, we certainly are performing very, very well in the asthma marketplace. I'm not going to comment on, you know, other companies' pricing strategies, but what I can say is when we look at the data comparing Dupixent uptake, either initiations or total scripts, it compares very favorably to the IL-5s. And we know that this is a result of the clinical profile, the safety profile, and the value that not only pulmonologists but also allergists are seeing in Dupixent for asthma. And as you know, with allergists, also treating patients with concomitant diseases.
Mary
Next question, please.
Operator
Next question comes from Kenan McKay of RBC Markets.
Kenan McKay
Hi, thanks for taking the question. One on Dupixent, maybe also for Marion. It seems like Dupixent is growing much faster in asthma than in AD, but it just seems like that's because germ has such a larger sales basis. So, Mary, I'm just wondering if you can frame what percent of Dupixent's quarter-over-quarter growth is coming from asthma versus DERM. Thank you.
Len
Sure. So let me talk about the total indications. That I can share with you is that the dermatology, atopic dermatitis business in Dupixent is about 75%. about 25% in respiratory disease, both asthma and nasal polyps, asthma, of course, being the larger of the two in respiratory disease. Both are growing very, very strongly, and remember that we launched in atopic dermatitis several years before we did in the asthma marketplace. Both are growing very, very strongly, and certainly as we look at the future potential for dipixin in atopic dermatitis, we have a long way to go. There's still tremendous unmet need across all age groups, the youngest patients, adolescents, and adults, and then the asthma marketplace as well. You know, it's important to note that today about 75% of the patients in asthma going on Depixin are biologic naive, so we're getting these new starts. There's tremendous opportunity, and Depixin has been one of the growers of the overall asthma biologics marketplace. You know, as mentioned in response to the earlier question, we look forward to With an FDA approval, they'll launch in pediatrics later this year, but among adults and adolescents, there's still tremendous opportunity in asthma as well. Both are growth engines for the product, and this is without even the many indications I look forward to launching in the future related to type 2 disease, you know, like acinophilic esophagitis and some of the other areas in allergy that George mentioned in his update today.
Mary
Mary, we have time for two more questions. We're going to try to squeeze them in quickly.
Operator
Sure. Next question comes from Brian Skourney of Beards. Your line is now open.
Brian Skourney
Thank you for taking our question. This is Leah Lowe, dialing in for Brian Skourney. Our question is based on your partnership with Intelia. I see that we are anticipating the first in vivo CRISPR data pretty soon, and we've seen good success here with the ex vivo approach. Maybe you can share your thoughts on that in vivo approach and how we should think about it in terms of looking at the safety of this approach. not just for the ATTR indication, but more broadly for the proof of concept for this space. Thank you.
Brian Skourney
George, do you want to take that?
George
Yeah, I think that is the most important aspect of this for us, is this is a platform. And as we said, we have multiple targets that might be amenable to this platform that we've already identified through our Regeneron Genetic Center. And so of great interest will be, does it work? And what will be the safety and the tolerability profile. So we think that this will be a platform determining sort of result, depending on how it turns out. Thanks, George.
Mary
We have time for one more question.
Operator
Next question comes from Carter Gold of Barclays. Your line is now open.
Carter Gold
Great. Congratulations on the quarter, and thanks for all the progress in tackling COVID and for taking the question. As you think, how should we think about, how do you think about appropriate regimen COVID-2 production in an increasingly sort of post-vaccination world and any read into how countries and healthcare systems are approaching supplies and stockpiling? And I guess in answering that question, can you just clarify kind of where you and Roche stand in terms of capacity, efficacy of lower doses, and continued improvements in efficiency and scale? Thank you. Len, you want to take that?
George
Yeah.
Mary
I don't think we're really in a position that's better for Roche to comment on how the market is developing outside of the United States. Um, but I do know that they're working on a lot of different discussions with a lot of different jurisdictions. Um, and, uh, there is, uh, as we speak now, um, adequate supply, but obviously, uh, the pandemic changes pretty quickly. So, um, I think Roche is probably going to be better positioned to answer that unless Justin has anything more specific for you.
Mary
No, that's it. Well, thank you for everyone joining the call today. We still have several callers in the queue that we didn't get to. We apologize for that. We will follow up with you after the call. Thanks to everyone for dialing in. Be safe and have a good day.
Operator
Thank you for your participation in today's conference call. This concludes the presentation. You may now disconnect.
Disclaimer