Furthermore, identical clonal rearrangements of TCRγ (Vγ9‐Jγ1.1) and TCRδ (Dδ2‐Jδ1 and Dδ2‐Jδ3) (Figure S3 and data not shown) were identified in both T2‐ALL and AML‐M0 blasts strongly supporting their clonal affiliation. Here, TRGC1 is linked to acute lymphoblastic leukemia.