MCL1 and acute myeloid leukemia: Of note is the fact that we found a significant correlation between BCL-2 and BCL-2S70 (R = 0.76, p < 0.00001) and between BCL-2 and MCL-1 (R = 0.81, p < 0.00001), describing that there was an active anti-apoptotic pathway in KMT2A-AML (Figure 1B).