
Solid Biosciences is a speculative buy, leveraging a differentiated SGT-003 gene therapy for Duchenne muscular dystrophy with a credible cash runway into mid-2028. SLDB's investment thesis centers on building both biological and controlled functional evidence, not just microdystrophin expression, to address physician and regulatory concerns. Competitive positioning against Sarepta and Regenxbio hinges on achieving clinically meaningful differentiation in function, safety, and eligibility, with time pressure from advancing rivals.










