Rhabdoid predisposition syndrome (RPS) is familial cases of highly malignant, aggressive, embryonal neoplasms manifested in early infancy and childhood that may originate from virtually any tissue, generally resulting in atypical teratoid rhabdoid tumors (AT/RTs) in the central nervous system and malignant rhabdoid tumors in the kidney or retroperitoneum. The vast majority demonstrate biallelic somatic inactivation of the SMARCB1 tumor suppressor within tumor cells. Mutations in SMRCA4 gene have also been identified.
