Insmed shares more than double on positive results for brensocatib

US biotech Insmed (Nasdaq: INSM) yesterday released positive top-line results from the ASPEN study, a global, randomized, double-blind, placebo-controlled Phase III trial to assess the efficacy, safety, and tolerability of brensocatib in patients with non-cystic fibrosis bronchiectasis, with the news sending the firm’s shares rocketing 113% to $46.85.

Insmed noted that the study met its primary endpoint, with both dosage strengths of brensocatib demonstrating statistically significant reductions in the annualized rate of pulmonary exacerbations (PEs) versus placebo. The study also met several of its prespecified secondary endpoints with statistical significance.

Brensocatib was well-tolerated in the study. Treatment-emergent adverse events (TEAEs) occurring in at least 5.0% of patients treated with either dose of brensocatib and more frequently than in placebo were COVID-19 (15.8%, 20.9%, 15.8%), nasopharyngitis (7.7%, 6.3%, 7.6%), cough (7.0%, 6.1%, 6.4%), and headache (6.7%, 8.5%, and 6.9%) for brensocatib 10 mg, brensocatib 25 mg, and placebo, respectively.