GWAS of mature B cell lymphomas have identified associations with FL (LPP, HLA loci, PVT1, CXCR5, ETS1, and BCL2) and with DLBCL (LPP, EXOC2, HLA-B, and PVT1)34,35. This evidence concerns the gene CXCR5 and diffuse large B-cell lymphoma.