SHH and atypical teratoid rhabdoid tumor: Based on the genetic and epigenetic profiles, 3 distinct molecular subgroups-AT/RT-TYR, AT/RT-SHH, and AT/RT-MYC have been recently identified and the prognosis of ATRT seems to differ by 3 molecular subgroups (2, 5, 6).The ATRT-TYR subgroup is enriched in genes associated with melanogenesis and neural crest development, such as TYR and DCT, and is often linked to older children with relatively better prognosis (7).