Dr. Young-Goo Han received his PhD in Genetics from SUNY Stony Brook before completing his postdoctoral training at UCSF. As a postdoc, he demonstrated that SHH signaling and primary cilia play critical roles in the development of adult neural stem cells in the hippocampal dentate gyrus, and the resulting manuscript has been cited more than 400 times. He has also contributed significantly to our understanding of primary cilia in cerebellar development and medulloblastoma pathogenesis. His lab demonstrated that changes in SHH signaling activity may underlie evolutionary expansion and folding of the cerebral cortex, the center for superior human cognitive abilities. Dr. Han has been recognized with awards from the Sontag Foundation and the Whitehall Foundation. His lab, which he has led as a member of the St. Jude faculty since 2011, is working to provide insights into mechanisms underlying brain development, diseases, and evolution.