MYC and Burkitt lymphoma: IG::MYC: Although IG::MYC translocations are typical of Burkitt lymphoma (BL), WHO-HAEM5 reports infrequent cases of BL with a phenotype of precursor B-cells including expression of terminal deoxynucleotidyl transferase, sometimes CD34, and absence of CD20 and surface immunoglobulin expression.