The PTCC data set includes T‐cell ALL (T‐ALL, n = 19), Mixed Lineage Leukemia (MLL/KMT2A)‐rearranged ALL (MLL‐ALL, n = 10), B‐cell precursor ALL (BCP‐ALL, n = 33), Ph‐like ALL (Ph‐like‐ALL, n = 19), Philadelphia chromosome‐positive ALL (Ph+ ALL, n = 3), and Early T‐cell Precursor ALL (ETP‐ALL, n = 6), and it is publicly available at PedcBioPortal database (http://pedcbioportal.org).19 This evidence concerns the gene KMT2A and leukemia.