Detailed Narrative
Apitegromab Regulatory Progress
Scholar Rock's BLA for apitegromab is progressing through FDA review with a PDUFA date of September 30. The company has two independent paths to approval, including the original Catalent Indiana fill/finish facility and a second facility. The FDA inspection classification for Catalent Indiana is pending, having exceeded the 90-day guidance period. However, the data package for the second facility has been submitted and its review is progressing well, with more vials available from this site than from Catalent Indiana. Management expressed confidence in the FDA's engagement and the ability to meet the PDUFA date.
European Regulatory and Commercial Strategy
The apitegromab MAA in Europe is under review, but its approval is currently dependent on the FDA's inspection classification for the Catalent Indiana facility. Scholar Rock is actively engaging with European regulators to potentially include its second fill/finish facility, which has recently passed FDA and EMA inspections. Commercial preparations are advancing, with an initial launch planned for Germany, followed by expansion into other countries to build a 50-country operating platform aimed at reaching 35,000 SMA patients worldwide.
Pipeline Advancement
The company is making meaningful progress across its anti-myostatin pipeline. The Phase II OPAL study, evaluating apitegromab in infants and toddlers with SMA, is experiencing robust enrollment, indicating significant unmet need. Scholar Rock also initiated the Phase II FORGE study for apitegromab in facioscapulohumeral muscular dystrophy (FSHD), a rare neuromuscular disease with no approved therapies. Additionally, development continues for a high-concentration subcutaneous formulation of apitegromab, with regulatory engagement planned later this year, and the Phase I healthy volunteer study for SRK-439 is progressing well, with top-line data expected later this year.
Commercial Readiness and Reimbursement
Scholar Rock's U.S. commercial organization is fully launch-ready for apitegromab, prepared to support patients, caregivers, and prescribers immediately upon FDA approval. Efforts include disease education, expanding reach to ~140 SMA treatment centers and ~2,600 prescribing physicians, and strengthening the Scholar Rock Supports patient services program. While broad reimbursement is sought, the company anticipates prior authorizations and potential initial denials, expecting the average time from prescription to infusion to be greater than 60 days during the first six months post-launch.
Financial Strength and Capital Allocation
The company ended Q2 FY26 with a strong cash position of $492 million, which includes $63 million in net proceeds from its ATM program during the quarter. Operating expenses for the quarter were $108.9 million, or $89.2 million excluding stock-based compensation. Scholar Rock maintains a disciplined financial plan, focusing investments on apitegromab commercial launch readiness, supply chain strengthening, and advancing its clinical pipeline. Upon FDA approval, the company has an option to draw an additional $150 million from its debt facility and plans to monetize a priority review voucher.