Dr. George Yancopoulos
Analyst · Piper Sandler
Thanks, Len. And as Len just pointed out, we are advancing programs across all stages of our diverse and growing portfolio. With the pandemic unfortunately still raging and even escalating, we know there's a lot of focus on COVID 19, and we will start with our REGN-COV2 program. From the beginning, there was a lot of attention to our efforts against the coronavirus because of our success using a similar approach with Ebola. As you just heard from Len, we received FDA approval for our Ebola cocktail that our team delivered, validating our approach for not only this, but other deadly infectious diseases and particularly COVID-19. We're investigating REGN-COV2, our antibody cocktail for COVID-19 in infected patients as well as for prevention in several ongoing clinical trials. Earlier this year, we released a descriptive analysis of the first 275 patients in the REGN-COV2 seamless Phase II/III trial in ambulatory patients. Importantly, we obtained insights into the natural history of COVID-19 from these early data. Large numbers of patients normally generate their own antibodies against the virus early on, and this robust endogenous immune response is associated with rapid clearance of the virus and decreased need for medical attention. That's why most patients do so well. However, some patients are slow to mount an immune response and are at higher risk for attended medical visits. In line with this observation, our initial analysis show that providing our exogenous antibody cocktail did not provide much benefit to the fast responders, but it benefit those who did not mount their own immune responses efficiently, allowing REGN-COV2 to clear virus more rapidly and decrease the need for future medical attention in these otherwise slow responders. Last week, we provided important updates from this ongoing study in ambulatory COVID-19 patients. In a formal statistical way, we presented prospective validation of our earlier observation in a confirmatory analysis involving more than 500 additional patients. Data showed significant viral load reductions in patients treated with REGN-COV2 compared to placebo. And consistent with earlier data, these results were driven by the patients who had not mounted their own effective immune response at the time of treatment or had high viral loads at baseline. Importantly, results in the combined analysis of the first 799 patients enrolled in the study demonstrated a statistically significant reduction in medically attended visits, including hospitalizations and emergency room visits. This effect was most prominent with patients with high risk factors, high viral loads and those who had not yet mounted their own immune response. We shared these data with the FDA as an update to our EUA submission and await regulatory feedback. We are investigating the potential benefit of this REGN-COV2 cocktail in different stages of disease in our other ongoing studies, our household contact study, which is testing the cocktail as a prophylactic treatment, and it has enrolled approximately 1,000 patients to date. In hospitalized patients, we have 2 ongoing studies, our study as well as the U.K. RECOVERY Protocol. All Regeneron-sponsored COVID-19 treatment trials are being supervised by the same independent data monitoring committee, which recently recommended that we pause enrollment in 2 cohorts representing the most severe hospitalized patients, while recommending that all our other studies continue as initially designed, including the 2 less severe patient cohorts in our hospitalized patient study. Since the lower of the 2 REGN-COV2 doses demonstrated the activity comparable to the higher dose, suggesting that both doses maximize the benefit of this approach, we intend to investigate even lower doses going forward. If effective, this could allow us to extend the benefit of our cocktail to even more patients. As we await next steps on the regulatory front, we continue to ramp up production for REGN-COV2. Under our U.S. government agreement, we now expect to have 2.4-gram treatment doses ready for approximately 80,000 patients by the end of this month, 200,000 total doses ready by the first week of January and approximately 300,000 total doses ready by the end of January. We continue to increase our in-house production capacity for further doses of REGN-COV2 and are thrilled to be partnering with Roche to substantially expand global capacity of REGN-COV2 as their production comes online early next year. Moving on to Dupixent. We recently announced positive Phase III data in asthma for children ages 6 to 11. In this study, Dupixent reduced severe asthma attacks by up to 65% versus placebo over one year, and Dupixent also rapidly and sustainably improve lung function in these children. We are planning to file these data with regulators early next year. Additionally, in Europe, we received a positive CHMP committee recommendation for Dupixent in atopic dermatitis in children ages 6 to 11. The Dupixent clinical program continues to progress and expand across a wide range of type 2 inflammatory conditions. In September, the FDA granted breakthrough therapy designation for Dupixent in eosinophilic esophagitis based on early Phase III results, which were recently presented at medical meetings. Before the end of the year, we expect to report Phase II data of Dupixent in combination with oral immunotherapy for peanut allergy. Additionally, Phase III studies are ongoing in several additional dermatology and pulmonary indications with readouts expected in 2022 and 2023, and we expect to begin additional Phase III pivotal trials by the end of the year. Putting this all together, Dupixent will soon be pivotal trials for 8 type 2 diseases that are not currently in the label and could address disease in nearly 1 million additional patients in the United States alone. Dupixent is also an important part of our 2-pronged approach against chronic obstructive pulmonary disease, or COPD, along with etokimab, our anti interleukin-33 antibody. Based on achieving a prespecified efficacy milestone in an interim analysis of our first Phase III study in type 2 COPD, we initiated a second Dupixent Phase III study. Data readouts are expected in 2023. We believe that our anti IL-33 antibody could help an additional group of COPD patients beyond those with type 2 disease. Based on a proof-of-concept data that has been submitted for publication, we believe that blocking IL-33 could be especially useful in the former smoker COPD patient subset. The pivotal etokimab program, consisting of 2 parallel Phase III studies, will initiate by year-end. We hope that Dupixent and etokimab can provide real benefit for the many desperate patients suffering from COPD. Moving on to oncology and first Libtayo. At the European Society for Clinical Oncology, the ESMO meeting in September, we shared results of our first pivotal -- of our pivotal first line non-small cell lung cancer study as well as our locally advanced basal cell carcinoma or BCC study. These data are now filed as supplemental label applications with the regulators with the FDA recently awarding priority review for approval of Libtayo as a monotherapy in a proposed lung cancer indication with an action date of February 28, 2021. We also announced that we completed enrollment in the Libtayo chemotherapy combination trial in first line lung cancer with first results from this study available as early as next year. Also, the BCC results presented at ESMO showed that Libtayo has the potential to be the first approved treatment with a clinical benefit in the advanced BCC setting following failure of a hedgehog inhibitor. The FDA granted a priority review for our BCC filing with an action date of March 3, 2021. We continue to make significant progress with Libtayo as a foundation to our oncology strategy. Moving on to our oncology bispecific efforts. We are in a pivotal program in non-Hodgkin's lymphomas for our CD20xCD3 bispecific [indiscernible] also known as REGN1979. We are working towards initiating a pivotal program for REGN5458, our BCMAxCD3 bispecific for relapsed/refractory multiple myeloma. And in solid tumors, dose escalation for REGN4018, our MUC16xCD3 bispecific continues in the first-in-human study in ovarian cancer in which we are observing preliminary evidence of activity. We are excited about the encouraging data we are observing in the studies of our CD3 class of bispecifics. However, we believe that our key potential advantage over other approaches is our ability to mix and match these CD3 bispecifics with not only our anti-PD-1, but also with our next class of bispecifics, the novel CD28 or costimulatory bispecifics. Our CD3 bispecifics currently in the clinic are designed to be paired with matching costim bispecifics for targets on a variety of different cancers with the intent to synergistically unleash the power of immuno-oncology more broadly than currently approved treatments. Our first costim bispecific, PSMAxCD28, in combination with Libtayo for prostate cancer is progressing through dose escalation cohorts, and thus far, the therapy is well tolerated. We will soon start trials with 2 novel costims, MUC16xCD28 in combination with either our MUC16xCD3 bispecific or with Libtayo for ovarian cancer. And our EGFRxCD28 in combination with Libtayo for solid tumors, including in lung, head and neck and colorectal cancers. The first member of a third class of tumor-targeting bispecifics, our MET X MET bispecific, has recently completed dose escalation and is currently in the dose expansion phase of the first-in-human trial. Remember, this bispecific targets 2 distinct epitopes on the MET oncogene, causing rapid internalization of this receptor and ablation of its signaling. MET mutations are present in 3% to 4% in MET gene amplifications and about another 3% of non-small cell lung cancers. Across our pipeline, we are pleased with the progress we are making across all stages of our rich oncology portfolio to compete, enhance and extend the power of immuno-oncology to more patients suffering from a wide variety of cancers. Beyond oncology, our pipeline continues to expand. In our C5 program, we will shortly begin dosing healthy volunteers in combination with Alnylam's C5 RNAi inhibitor, cemdisiran. The goal of the combination approach is to achieve convenient self-administration with a subcutaneous dosage form in addition to the more complete and durable blockade of the complement activation in patients suffering from paroxysmal nocturnal hematuria and other complement-mediated diseases. This will be the first example of a combination of an antibody with an RNAi against the same target. And we believe that this could be the first in a series innovative antibody RNA combination that could change the treatment paradigm in multiple disease settings. We are also excited about additional collaborative programs with Alnylam, including utilization of their siRNA approach against targets that we have identified through our Regeneron Genetic Center. As Alnylam has just announced, we have initiated dosing in sRNA against one such target, HSD17B13, for the treatment of NASH. Additionally, I want to acknowledge an important milestone for another innovative collaboration we have with Intellia. In the very near term, the first patient should be dosed with the groundbreaking systemically delivered CRISPR/Cas9 gene editing therapy, a potential one-and-done treatment for transthyretin amyloidosis or ATTR. As the first systemically administered gene editing intervention, we hope that this will provide proof-of-concept for future systemic gene editing efforts. Alnylam and Intellia collaborations represent an important new strategy for Regeneron as we attempt to broaden our efforts in the future of genetic therapies where we combine our capabilities and expertise to help empower those of our partners and to help change the practice of medicine and make new forms of gene therapy a reality. By the end of this year, we and our collaborators will have introduced 8 new investigational therapies into the clinic, an accomplishment we are proud of in a challenging year. To conclude, we are looking forward to several catalysts over the next several months. We expect imminent updates and additional data readouts on our REGN-COV2 therapy, first regulatory approval for evinacumab by February of next year, approval for first line lung cancer and basal cell carcinoma indications for Libtayo, filing for Dupixent in pediatric asthma and many more to come. It is a very exciting time at Regeneron. With that, I would like to turn the call over to Marion.