The mutation frequencies for genes recurrently mutated in AITL were DNMT3A = 8/12 (66.7%, 95% confidence interval (CI) = 34.9–90.1%), IDH2 = 8/12 (66.7%, 95% CI = 34.9–90.1%), RHOA = 10/12 (83.3%, 95% CI = 51.6–97.9%) and TET2 = 11/12 (91.7%, 95% CI = 61.5–99.8%) (see Table 2 and Supplementary Table S1). This evidence concerns the gene IDH2 and angioimmunoblastic T-cell lymphoma.