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An aggressive neoplasm that arises in the kidney, the liver, the peripheral nerves and all miscellaneous soft-parts throughout the body. The disease usually occurs in infancy or childhood, exceptional cases can occur in adolescents and adults. 90% of cases have biallelic inactivation of SMARCB1 (22q11.23). Rare cases are associated with a biallelic mutation of SMARCA4 (19p13.3) (encoding another SWI/SNF chromatin-remodeling complex member). In 25% of cases, the disease is associated with a germline mutation of SMARCB1. Rarely, germline mutations are inherited from asymptomatic parents, either because of gonadal mosaicism or incomplete penetrant mutations. The survival rate is low with a 5 year survival rate of 20%.
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An aggressive neoplasm that arises in the kidney, the liver, the peripheral nerves and all miscellaneous soft-parts throughout the body. The disease usually occurs in infancy or childhood, exceptional cases can occur in adolescents and adults. 90% of cases have biallelic inactivation of SMARCB1 (22q11.23). Rare cases are associated with a biallelic mutation of SMARCA4 (19p13.3) (encoding another SWI/SNF chromatin-remodelling complex member). In 25% of cases, the disease is associated with a germline mutation of SMARCB1. Rarely, germline mutations are inherited from asymptomatic parents, either because of gonadal mosaicism or incomplete penetrant mutations. The survival rate is low with a 5 year survival rate of 20%.
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