Researchers at Dana-Farber Cancer Institute/Children’s Hospital Cancer Center (DF/CHCC) andseveral collaborating institutions have linked mutations in specific genes to each of the four recognized subtypes of medulloblastoma, the most common malignant brain tumor of children. Scott Pomeroy, Bronson Crothers Professor of Neurology and chair of the Department of Neurology at Boston Children’s Hospital, was the leader of the study.