To further explore whether TGFBR1 mediates regulation of miR‐27a on DLBCL cell phenotypes, the TGFBR1 pcDNA3.1 expression vector contains or missing TGFBR1 3′UTR were constructed and co‐transfected with miR‐27a mimic, respectively. This evidence concerns the gene TGFBR1 and diffuse large B-cell lymphoma.