Consort. Of 2068 patients with DLBCL treated at MSKCC from 2001 through 2017, 1155 patients were treated after 2010, when FISH testing for MYC began. Of those, 356 patients (45%) had available FISH reports, and of those, 144 qualified for classification into 1 of the 3 FISH groups for the final inclusion population, including 46, 55, and 43 in the DHL, EC, and WT groups, respectively.