IDH1 and neoplasm: Again, the vast majority of probes had lower DNA methylation levels in IDH1R132H mutated tumours (n = 83) compared to non-R132H IDH1/2- mutated tumours (n = 11, Fig. 4a) and the most differentially methylated probes were those partially methylated in IDH1R132H mutated tumours (Fig. 4b).