Priya Singhal
Analyst · RBC Capital Markets
Thank you, Michel, and good morning, everyone. As Michel mentioned, we had several exciting R&D achievements this past quarter that meaningfully advance the potential of our pipeline, which includes 30 programs, 12 of which are in Phase 3 are filed in order to deliver new impactful therapies for patients and drive renewed growth for the company. Starting with Alzheimer's disease. Together with Eisai, we were very excited to announce the positive results of the Clarity AD study, evaluating lecanemab in early Alzheimer's disease. The primary endpoint of the study was a change from baseline on CDR Sum of Boxes, a well-established measure of cognition and function in Alzheimer's disease. The study met the primary endpoint and lecanemab reduced clinical decline on the CDR Sum of Boxes compared with placebo at 18 months by 0.45, representing a treatment difference of 27%. We also observed a highly statistically significant reduction in CDR Sum of Boxes versus placebo as early as six months. We believe this demonstrates a rapid onset of efficacy and a significant change in CDR Sum of Boxes versus placebo. Furthermore, the effect on CDR Sum of Boxes expanded over the 18-month study period on an absolute basis, suggesting that lecanumab was exerting a disease modifying effect. The study also met all key secondary endpoints, reinforcing lecanumab's impact on cognition and function. This includes a statistically significant reduction in amyloid blocks in the brain, as well as additional clinical assessments such as the ADCS-MCI-ADL, a caregiver-rated assessment of activities of daily living relative to placebo. We believe that these efficacy results, when combined with an observed overall incidence of ARIA of approximately 21%, highlights the potential for lecanemab to be a leading disease modifying treatment for Alzheimer's disease. Eisai will present the Clarity AD study results at CTAD in November and intends to publish the findings in a peer-reviewed medical journal. The lecanemab filing under the accelerated approval pathway is currently under review with a PDUFA date of January 6, 2023. The FDA has also agreed that the Clarity AD could serve as a confirmatory study to verify the clinical benefit of lecanemab. Accordingly, we expect Eisai will file for traditional approval of lecanemab in the US as soon as possible, following a positive FDA decision on accelerated approval. This filing is expected by the end of Q1 2023, along with marketing authorization applications in the EU and Japan expected by the end of Q1 2023 as well. Eisai has also been engaging with the centers of Medicare and Medicaid services as they work to maximize access for patients. Beyond these regulatory and access engagements, together with Eisai, we are also advancing a comprehensive development program for lecanemab, which includes, first, the ongoing AHEAD 3-45 pre-clinical study to evaluate lecanemab when administered earlier in disease, when amyloid pathology is present but before the onset of cognitive impairment. Second, investigating a potential maintenance dosing regimen with the goal of reducing the lecanemab dosing frequency over time. And the development of a subcutaneous formulation of lecanemab. At AAIC earlier this year, Eisai presented bioavailability data from a Phase I study comparing IV versus subcutaneous dosing as well as modeling and simulation data illustrating that a fixed subcutaneous dose of 720 milligrams administered weekly may potentially result in comparable exposure and efficacy to the current IV formulation while potentially lowering the incidence of ARIA. With these results in hand, we are focused now on maintaining our leadership position in Alzheimer's disease over the long-term. We have an industry-leading portfolio addressing both amyloid and tau pathologies, as well as a multi-target multi-modality pre-clinical portfolio targeting a broad range of Alzheimer's disease biology. Now I will turn to neuropsychiatry, where this quarter, Biogen and Sage presented new data that supports zuranolone's potential, if approved, as a novel treatment for both major depressive disorder and postpartum depression. This includes an updated analysis of the open-label ongoing longitudinal SHORELINE Study in MDD, which showed that the medium time to onset first -- I'm sorry, the median time to first repeat treatment for patients who responded to the original 14-day treatment was 135 days for the 30-milligram cohort and 249 days for the 50-milligram cohort. We believe these data further support zuranolone as a potential meaningful new treatment for people suffering from depression, and we are continuing to work with Sage to advance a single US regulatory filing for zuranolone in MDD and PPD expected to be completed by the end of this year. Moving on to our neuromuscular portfolio. The New England Journal of Medicine recently published 12-month data from the Phase III VALOR study and its open-label extension evaluating tofersen in SOD1-ALS, a progressive and rare genetic form of ALS, which currently has no targeted therapy. The published data showed that patients who initiated tofersen in VALOR experienced slower rates of decline across critical measures of function, muscle strength and quality of life versus those who transitioned from placebo to tofersen at the start of the open label extension six months later. Furthermore, tofersen led to a robust and sustained reduction in neurofilament, a marker of neuronal injury and neurodegeneration. In July, the tofersen filing was accepted by the FDA under the accelerated approval pathway with priority review. Subsequently, we submitted responses to information request by the FDA, which the FDA considered a major amendment to the application that will require additional time for review. As a result, the review period has been extended by three months with an FDA decision now expected by April 25, 2023. In movement disorders, together with Denali, we initiated our second late-stage clinical trial for BIIB122, a small molecule LRRK2 inhibitor. The Phase 3 LIGHTHOUSE study will evaluate BIIB122 in individuals with a confirmed pathogenic LRRK2 mutation. Given that LRRK2 activity is believed to regulate lysosomal function and underlying biological pathway implicated in Parkinson's disease, we are also advancing the Phase 2b LUMA study in idiopathic Parkinson's disease, which we initiated earlier this year. Moving on to specialized immunology. We were excited to announce the initiation of the Phase 2/3 study of Litifilimab or BIB059 in cutaneous lupus erythematosus, or CLE. The prior Phase 2 LILAC study of Litifilimab met the primary endpoints in both parts of the study, evaluating safety and efficacy in individuals with CLE and systemic lupus erythematosus or SLE. The detailed Phase 2 results were recently published as two separate manuscripts in the New England Journal of Medicine. The Phase 2/3 study in CLE builds upon our mid to late-stage pipeline in specialized immunology, which also includes three Phase 3 studies in SLE, two for Litifilimab and one for dapirolizumab pegol, which we are developing in collaboration with UCB. Looking ahead, we also have a number of exciting opportunities on the horizon. This includes the potential to deliver new therapies in Alzheimer's, depression, and SOD1-ALS; initiation of mid to late-stage programs in Alzheimer's disease and stroke; and a proof-of-concept study readout in broad ALS. In conclusion, we believe that our recent progress exemplifies important elements of our broader approach to R&D at Biogen. This includes a focus on genetically validated targets and biology, the use of novel biomarkers to better characterize disease biology and target engagement, as well as our ability to employ the right therapeutic modality for the specific disease area or target. Together, we believe these principles, combined with our ongoing prioritization effort, has the potential to increase the probability of success in disease areas with significant unmet need. I will now pass the call over to Mike.