CEACAM8 and lymphoma: However, the significantly higher percentage of CD66b+CD33dimHLA-DR− cells that we detected in PBMCs from a new series of 12 relapsed patients as compared to healthy donors [2.75 (0.24–46) vs 0.42 (0.04–2.97), p < 0.0002] (O.M. and C.T. personal communication), further support the role of lymphoma in sustaining the development of G-MDSCs.