Third, mutations in the BCL2, KMT2D, CREBBP, EZH2, and MYD88 genes are considered common genetic alterations in DLBCL with mutation frequencies of >10%; however, except for one mutation in the KMT2D gene, mutations in any of the above genes were not detected in our study. The gene discussed is KMT2D; the disease is diffuse large B-cell lymphoma.