After surprising Wall Street by unanimously voting in favor of the gene therapy elivaldogene autotemcel (eli-cel) for early active cerebral adrenoleukodystrophy from Bluebird Bio Inc., the FDA’s Cellular, Tissue and Gene Therapies Advisory Committee met again June 10, this time to examine the risk-benefit profile of the company’s betibeglogene autotemcel (beti-cel) for people with transfusion-dependent beta-thalassemia.