[13] Among chromosomal abnormalities, deletions of the long arm of chromosome 6 are the most frequently observed in WM patients: [13] tumor suppressor genes mapping within this area include B lymphocyte -induced maturation protein 1 (BLIMP1) and tumor necrosis factor α-induced protein 3 (TNFAIP3). The gene discussed is PRDM1; the disease is neoplasm.