To investigate the mechanisms underlying the anti-leukemic activity of mitochondrial fusion inhibition, we performed differential gene expression (DGE) analysis in transcriptomes of PDX samples and human AML cell lines after inhibition of MFN2 or OPA1, and we observed that the most significantly depleted signatures were related to cell cycle regulation (Fig. 3A and Supplementary Fig. S3A–C). The gene discussed is OPA1; the disease is acute myeloid leukemia.