Insmed Provides Clinical and Business Update

Core Insights - Insmed Incorporated announced that the Phase 2b BiRCh study of brensocatib in chronic rhinosinusitis without nasal polyps (CRSsNP) did not meet its primary or secondary efficacy endpoints, leading to the discontinuation of the development program for this indication [1][2][4] - The company has acquired INS1148, a Phase 2 ready monoclonal antibody aimed at treating respiratory and immunological diseases, which is expected to advance into clinical development [3][4] Study Results - The Phase 2b BiRCh study involved 288 patients randomized to receive either brensocatib 10 mg, 40 mg, or placebo for 24 weeks, with the primary endpoint being the change in the 28-day average of daily Sinus Total Symptom Score (sTSS) at Week 24 [4][5] - Topline results showed that the placebo group had a least squares mean change of -2.44, while the brensocatib 10 mg and 40 mg groups had changes of -2.21 and -2.33, respectively, indicating no significant improvement [2][4] - Treatment-emergent adverse events (TEAEs) were reported as follows: 63.6% for 10 mg, 69.9% for 40 mg, and 65.3% for placebo, with serious TEAEs being 2.0%, 3.2%, and 2.1% respectively [2] Acquisition Details - INS1148 is an investigational monoclonal antibody with a novel mechanism targeting a specific isoform of Stem Cell Factor SCF248, which may address significant unmet needs in respiratory and inflammatory diseases [3][4] - The company plans to initiate Phase 2 development programs for INS1148 in interstitial lung disease and moderate-to-severe asthma [3][4] Company Overview - Insmed is a biopharmaceutical company focused on delivering innovative therapies for serious diseases, with a diverse portfolio that includes both approved and investigational medicines [6][7] - The company has been recognized as a top employer in the biopharmaceutical industry, emphasizing its commitment to patient care and innovative drug development [7]