These seven subgroups of myeloma are namely CD1 [(t(11;14)], CD2 [t(11;14) & t(11;16)], MS [t(4;14)], MF [t(14;16) & t(14;20)], Hyperdiploid cluster (HY), low bone disease (LB), and proliferation-associated genes (PR). The gene discussed is CD2; the disease is myeloid sarcoma.