Additionally, qRT-PCR analyses of the other PPP4 regulatory subunits Ppp4r1, Ppp4r3a, and Ppp4r3b were performed to validate specific knockdown of Ppp4r2 in the MLLT3-KMT2A leukemia model (Supplementary Figure 2C). The gene discussed is PPP4R3A; the disease is leukemia.