IDH1 and neoplasm: Median duration of VDE negative after the end of the combined treatment was 8.1 years (range, 0.8 to 8.6) in IDH-mutated/codeleted tumors, 5.6 years (range, 2.5 to 21.9) in IDH-mutated/noncodeleted tumors, and 3.7 years in the IDHwt tumor.