However a careful analysis of the maps published in these papers allowed us to confirm the chromosomal localizations of the seven main loci: IGH, IGK and IGH (for the immunoglobulins), TRA, TRB, TRG and TRD (for the T cell receptors), described in 2001, in the Immunoglobulin FactsBook [2] and T cell receptor FactsBook [3], respectively, and determined by an analysis of translocations involving the IG and/or TR loci in leukemia and lymphoma (http://www.imgt.org/IMGTrepertoire/GenesClinical/translocation/human/overview/Hu_overviewpart1.html) (accessed on 22 February 2022). The gene discussed is THRB; the disease is lymphoma.