Core Insights - Scholar Rock Holding's shares increased by 13.7% following positive phase 2 trial results for its weight-loss therapy [1] - The trial demonstrated that the combination of Scholar Rock's apitegromab with Eli Lilly's tirzepatide significantly reduced lean mass loss compared to tirzepatide alone [2] - The therapy is well tolerated and has the potential to support healthier weight loss by preserving lean mass for patients on GLP therapies [3] Market Potential - The GLP-1 drug market, including Eli Lilly's Mounjaro and Novo Nordisk's Ozempic, was valued at $53.5 billion in 2024 and is projected to triple by 2030 [5] - Given the public's preference for fat loss over muscle loss, Scholar Rock's apitegromab could capture a significant share of this expanding market [5]