NEJM This Week — April 30, 2026

This week, we feature advances in targeted therapy for HER2-mutant lung cancer, interventions to reduce maternal infection, an emerging treatment for hemophilia A, and a new diagnostic test for tuberculosis. We review Barrett’s esophagus and follow a case of systemic illness with kidney failure. Perspectives address GLP-1 drugs and eating disorders, directed blood donation, generic drug safety, and an in-flight medical emergency.