Mereo BioPharma(US:MREO)2026-01-14 21:30Pipeline Programs - Setrusumab for Osteogenesis Imperfecta (OI) Phase 3 results were reported around the end of 2025, partnered with Ultragenyx, but neither study achieved the primary endpoint of reduction in AFR compared to placebo or bisphosphonates[8, 11] - Alvelestat for Alpha-1 Antitrypsin Deficiency-associated Lung Disease (AATD-LD) activities are ongoing to support the initiation of Phase 3, following an agreement in principle on the primary endpoints[8] - Vantictumab for osteopetrosis is out-licensed to āshibio, with EU rights retained, and an IND is planned for H2 2026[8] Financial Status - The company has approximately $41 million in cash and cash equivalents as of December 31, 2025, providing a cash runway into mid-2027[8] Setrusumab Clinical Trial Results - In the Orbit study (Setrusumab vs placebo), 19.5% of patients met rescue criteria at 12 months, primarily due to fractures, with a larger number of placebo patients exiting the study[14] - In the Cosmic study (Setrusumab vs bisphosphonates), there was a 59% reduction in vertebral fractures on setrusumab (p=0.081), despite more severe type III/IV patients on setrusumab (65% setrusumab vs 54% IV-BP)[31] - Setrusumab patients in the Orbit study showed improvements in disease severity (PGIS) in peds/teens, as well as improvements in pain/comfort and sports/activity[20] Market Opportunities - Osteogenesis Imperfecta affects approximately 60,000 patients across the US & Europe[9] - Severe Alpha-1 Antitrypsin Deficiency affects an estimated 50,000 patients in North America and 60,000 in Europe[9] - Osteopetrosis has an incidence of 1 in 20,000 in North America and Europe, with onset typically in late childhood[9]