Cell apoptosis was significantly upregulated in both DLBCL cell transfected with TGFBR1 expression vectors missing 3′UTR only, TGFBR1 expression vectors containing TGFBR1 3′UTR only, and TGFBR1 expression vectors missing 3′UTR and miR‐27a mimic co‐transfected group (Figure 4C,D). This evidence concerns the gene TGFBR1 and diffuse large B-cell lymphoma.