K. Nakase et al., ACUTE MYELOMONOCYTIC LEUKEMIA IN A PATIENT WITH MULTIPLE-MYELOMA - EVIDENCE FOR DIFFERENT CLONAL ORIGIN, Internal medicine, 34(6), 1995, pp. 546-549
A case of 77-year-old female with multiple myeloma (IgG-k) developed a
cute myelomonocytic leukemia (AMMoL) following a myelodysplastic stage
after chemotherapy with melphalan-cyclophosphamide combinations for 6
years, The leukemic blast cells expressed both myeloid antigens (CD11
b, CD13, CD14, CD15, CD33 and CD34) and TIE lymphoid antigens (CD2, CD
4, CD22 and PCA1), Cytogenetic analysis revealed a chromosome deletion
-7, Analysis of immunoglobulin genes showed the heavy chain genes in
germ line configuration, These findings indicate that the AMMoL was a
therapy-related stem cell leukemia acid was a clonal origin geneticall
y different from multiple myeloma irrespective of plasma cell phenotyp
e.