RB1 and Fanconi anemia: One of the 44 (2.3%) patients with central nervous system (CNS) tumors had a VUS in a gene predisposing to Fanconi Anemia in which childhood-onset brain tumors have been described (FANCG), and seven of the 49 (14.3%) patients with solid tumors had a VUS in a relevant gene associated with childhood onset (BRCA2, CDH23, EP300, ERCC6L2, FANCI, RB1, RFWD3, XRCC2).