AMGN Posts Upbeat Data on Uplizna From Myasthenia Gravis Study

Core Insights - Amgen reported positive results from the phase III MINT study for Uplizna, indicating its potential for label expansion in generalized myasthenia gravis (gMG) [1][4] Group 1: Study Results - Uplizna demonstrated durable efficacy in AChR-positive gMG patients over 52 weeks, with a 2.8-point improvement in MG-ADL scores compared to placebo [2] - 72% of AChR+ patients treated with Uplizna showed an improvement of three or more points in MG-ADL scores, versus 45% in the placebo group [2] - In the QMG score, 69% of AChR+ patients on Uplizna improved by three or more points, compared to nearly 42% in the placebo group [3] Group 2: Regulatory and Market Position - Amgen plans to submit a regulatory filing for Uplizna with the FDA by the first half of 2025, currently approved for neuromyelitis optica spectrum disorder [4] - A regulatory filing for Uplizna in immunoglobulin G4-related disease is under review, with a decision expected by April 3, 2025 [4] - Uplizna, part of Amgen's rare disease franchise, was acquired through the $28 billion purchase of Horizon Therapeutics in 2023 [9] Group 3: Competitive Landscape - The 52-week results from the MINT study provide Uplizna an advantage over competitors like argenx's Vyvgart and UCB's Rystiggo, which require weekly dosing, while Uplizna requires dosing every six months [8] - Uplizna has received orphan drug designation from the FDA for the gMG indication [8] Group 4: Stock Performance - Year to date, Amgen's shares have increased by over 20%, outperforming the industry growth of 6% [5]