Summary of Solid Biosciences FY Conference Call Company Overview - **Company**: Solid Biosciences (NasdaqGS:SLDB) - **Event**: 44th Annual J.P. Morgan Healthcare Conference - **Date**: January 13, 2026 - **CEO**: Bo Cumbo Key Points Industry and Company Developments - Solid Biosciences has dosed 33 patients in its phase 1/2 Duchenne muscular dystrophy (DMD) trial called Inspire, reporting no drug-induced liver injury, myocarditis, or AHUS [2][30] - The company has successfully enrolled its first patient in a double-blind placebo-controlled trial and dosed its first patient in Friedreich's ataxia (FA) [2][5] - Solid has established over 50 partnerships for its capsid technology, indicating a growing interest in its platform for next-generation therapies [3][6] Clinical Trials and Pipeline - The Inspire trial aims to enroll 50 to 60 patients, with 33 already dosed and full enrollment expected soon [8][31] - The company is prioritizing FA over CPVT (catecholaminergic polymorphic ventricular tachycardia) due to resource constraints, with plans to dose patients in CPVT this quarter [5][6] - The first patient in the double-blind placebo-controlled trial will be dosed in either Australia or Canada, with European sites also opening [9][32] Safety and Efficacy Data - The safety profile of the therapy appears robust, with 0% drug-induced liver injury and other serious adverse events reported [11][30] - The mean expression of microdystrophin in treated patients is reported at 58%, the highest among current therapies [10][23] - Early cardiac data shows declines in troponin levels and increases in ejection fraction, suggesting potential cardiac benefits [11][28] Capsid Technology - The capsid SLB101 is designed for enhanced binding to muscle tissue, leading to improved distribution and reduced liver targeting [12][19] - The capsid technology is noted for its low viral load (1E14), which is lower than other therapies, potentially leading to fewer side effects [14][40] - The capsid's unique design allows for better muscle perfusion and reduced fibrosis, contributing to the observed clinical benefits [13][19] Market Opportunity - The DMD market is expanding, with approximately 100 boys born with the disease each quarter, indicating a high demand for new therapies [36] - Solid aims to be a leader in the DMD space, with plans for accelerated approval pathways and potential first gene therapy to market in the UK [36][44] Regulatory Strategy - The company is preparing for multiple meetings with the FDA to discuss the phase 3 placebo-controlled trial and the potential for accelerated approval [33][44] - Solid has not reviewed any functional data to maintain the integrity of its discussions with the FDA, ensuring confidence in its regulatory submissions [34][45] Future Milestones - Solid plans to continue dosing patients and gathering data throughout the year, with significant milestones expected that could transform the company [38][39] - The company is focused on ensuring that its therapies are well-positioned for market entry and regulatory approval, with ongoing studies to track long-term outcomes [29][44] Additional Insights - The dual-route administration in FA is a significant milestone, showcasing the company's innovative approach to treatment delivery [37] - The emphasis on safety and efficacy data, along with a strong pipeline, positions Solid Biosciences as a key player in the gene therapy landscape for muscular dystrophies [12][30]