Send us Fan Mail Ben and Daphna dig into a large, population-based study linking IVF conception to VACTERL association, a rare but serious pattern of congenital anomalies spanning the vertebral, anal, cardiac, tracheoesophageal, renal, and limb systems. Drawing on over 1.5 million births across four US states and linked SART registry data, the study finds IVF-conceived infants face significantly higher odds of VACTERL and related multiple anomaly syndromes compared to naturally conceive...