Posted on: 19 September 2021, source: genengnews.com
Astellas Pharma has acknowledged that a fourth boy has died in the troubled Phase I/II trial through which its Astellas Gene Therapies (formerly Audentes Therapeutics) has been evaluating its adeno-associated virus (AAV) gene therapy candidate AT132 in patients with X-linked Myotubular Myopathy (XLMTM). Unlike the other three boys who all died last year in the Phase I/II ASPIRO trial (NCT03199469), the fourth—whose age has not been disclosed—received the lower dose of 1.3×10e14 vg/kg.