36 VHL-related pheochromocytomas (from 21 patients) and 10 VHL-related CNS hemangioblastomas (from 6 patients) were studied using comparative genomic hybridization (CGH) to detect genetic imbalances. Patient I with VHL-Associated hemangioblastoma was found with a germline insertion mutation (c.316insGCC) in the VHL gene. (stated as c.529insGCC in the paper which used the Latif sequence as reference) in the VHL gene. All patients have familial VHL.