STAG2 and acute myeloid leukemia: STAG2 mutations were significantly enriched in AML‐MRC‐M compared to both AML‐MRC‐C and AML‐MRC‐H (p < 0.0001 and p = 0.0004, respectively), and were significantly enriched in AML‐MRC‐H compared to AML‐MRC‐C (p < 0.0001).