DNMT3A and acute lymphoblastic leukemia: Comparing DNMT3A-mutated (n = 6) and DNMT3A wild-type (n = 6) ETP-ALL, we found lower GATA3 methylation in DNMT3A-mutated versus DNMT3A wild-type samples (16 vs. 35 %, p < 0.0001) at the GATA3 CpG island (GRCh37: chr10:8091375-8098329), but GATA3 expression, as determined by RT-PCR, was not different between the DNMT3A mutated (n = 6) and wild-type (n = 6) ETP-ALL cases (4.4 vs. 3.8, p = 0.84).