tokens: These results suggest that rhabdoid tumors , choroid plexus carcinomas and a subset of medulloblastomas and cPNETs share common pathways of oncogenesis related to hSNF5 / INI1 alteration and that hSNF5 / INI1 mutations define a genetically homogeneous family of highly aggressive cancers mainly occurring in young children and frequently , but not always , exhibiting a rhabdoid phenotype