Approaches for prevention of tumors in patients with rhabdoid tumor predisposition syndrome.

Abstract

Patients with rhabdoid tumor predisposition syndrome (RTPS) harbor germline alterations in the epigenetic regulator genes SMARCB1 or SMARCA4. Patients usually present with atypical teratoid/rhabdoid tumor (AT/RT) of the brain or malignant rhabdoid tumor (MRT) arising outside the central nervous system. Intensive treatment can lead to remissions, however tumors frequently recur or synchronous or metachronous tumors appear. A maintenance or secondary prevention regimen may prevent these aggressive tumors. Potential maintenance regimens may include low-dose traditional chemotherapy or different epigenetic therapies designed to target the epigenetic imbalance that drives RTs. We here review several potential maintenance regimens that may be useful in RTPS.