The observation that the three KMT2A-MLLT3+ cell lines displayed higher p18INK4C levels than the KMT2A-AFF1+ cell line supports the human RNA sequencing data showing that AML patient cells harbouring KMT2A-MLLT3 have higher CDKN2C p18INK4C expression than the pool of different KMT2A rearranged AML patient cells (Figure 1A). The gene discussed is AFF1; the disease is acute myeloid leukemia.