Sanofi to Join Alzheimer's Space With Vigil Neuroscience Buyout

Core Viewpoint - Sanofi has agreed to acquire Vigil Neuroscience for approximately $470 million, enhancing its neurology pipeline with the addition of VG-3927, an investigational treatment for Alzheimer's disease [1][4]. Group 1: Acquisition Details - The acquisition involves Sanofi purchasing all outstanding shares of Vigil at $8 per share in cash, with Vigil shareholders also eligible for a contingent value right of $2 per share upon the first sale of VG-3927 [3]. - The transaction is expected to close in the third quarter of 2025, subject to customary closing conditions, and will not affect Sanofi's financial guidance for 2025 [4]. Group 2: Product Information - VG-3927 is a TREM2 agonist aimed at enhancing the neuroprotective function of microglia in Alzheimer's patients, differing from existing FDA-approved drugs that target amyloid beta plaque accumulation [2][8]. - Sanofi is not acquiring Vigil's other candidate, iluzanebart (VGL101), which is in mid-stage development for a rare neurodegenerative disease [5]. Group 3: Market Context - Year-to-date, Sanofi's shares have increased by 9.7%, contrasting with a 3.9% decline in the industry [2]. - Currently, there are two FDA-approved drugs for Alzheimer's disease: Biogen's Leqembi and Eli Lilly's Kisunla, both targeting amyloid beta accumulation [8][9].