When subgroups were separated by diagnoses, 30 of 105 (28.6%) patients with hematologic malignancies had a VUS in a relevant gene associated with childhood onset (A2ML1, ADA, ATM, BLM, BRCA2, CREBBP, DDX41, DNAJC21, EFL1, EP300, ERCC6L2, FANCF, MAP2K2, PARN, PAX5, PTPN11, RPL5, RRAS, SH2D2A, SHOC2, SOS2, TERT, TNFRSF13B). The gene discussed is FANCF; the disease is hematologic disorder.