TRERNA1 and diffuse large B-cell lymphoma: To examine whether TRERNA1 is involved in DLBCL development, we overexpressed TRERNA1 in OCI-Ly3 cells, the results of which showed that cell proliferation was higher in TRERNA1-overexpressing than the empty vector group according to the results in CCK-8 assays (Fig. 2A and Fig. S2A).