While Optic atrophy (OPA1) expression was reduced in sh-ATM DLBCL cells (Supplementary Fig. S4A), expression of, DRP1 (dynamin-related protein), was increased in ATM deficient DLBCL cell lines compared to WT-ATM cells (Supplementary Fig. S4B). Here, OPA1 is linked to diffuse large B-cell lymphoma.