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Luchinin (Abstract)

Cellular Therapy and Transplantation (CTT), Vol. 2, No. 5, 2009
doi: 10.3205/ctt-2009-No5-abstract20
© The Authors. This abstract is provided under the following license:
Creative Commons Attribution 3.0 Unported


Abstract accepted for "Joint EBMT Pediatric Working Party – 3rd Raisa Gorbacheva Memorial Meeting on Hematopoietic Stem Cell Transplantation", Saint Petersburg, Russia, September 17–20, 2009

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Cases of secondary acute myeloid leukemia and myelodysplastic syndrome
in patients with multiple myeloma

Alexander S. Luchinin

Research Institute of Hematology and Blood Transfusion as a Federal State establishment under Rosmedtechnologies

Correspondence: Alexander S. Luchinin, Research Institute of Hematology and Blood Transfusion, Borovaya str., 20/13, 61003, Kirov, Russia, E–mail: glivec@mail.ru

Abstract

Standard chemotherapy using alkylating agents both during the induction of remission and its maintenance therapy had been applied for 30 years in treatment of multiple myeloma (MM). But after a long treatment utilizing alkylating preparations the risk of secondary leukemias becomes unjustified.

We analysed 329 MM cases during the years 1994 to 2008. The males numbered 128 (39%) and the females 201 (61%). The median overall survival (OS) rate for all patients was 31 months. Secondary leukemias were diagnosed in 5 MM patients and were diagnosed as follows: AML (M2 subtype according to FAB) in 2 patients, refractory anemia with excess blasts (RAEB-1 according to WHO) in 2 patients and refractory anemia with excess blasts (RAEB-2 according to WHO) in 1 patient. The median period before a second tumor appeared was 7.3 years. The actuary risk of secondary leukemia after 5 years of MM was 1.3%. The general occurrence of secondary AML and MDS equaled 1.7%. Low occurrence of this phenomenon is due to the fact that the mean period for development of a secondary tumor is 3 times greater than the median life expectancy for MM patients. The median OS rate after the diagnosis of a second leukemia was 2 months.

Thus, secondary AML and MDS are rare complications of chemotherapy in MM patients. But if they appear and develop, it leads to a rapid reduction of life expectancy for the patients because of resistance to the therapy carried out. Patients with smoldering myeloma and a high life expectancy of 5 to 10 years die of a qualitatively new leukemia as a result of a long chemotherapy using alkylating agents. That is why the risk of a second tumor cannot be considered as justified.

Keywords: multiple myeloma, acute myeloid leukemia, myelodysplastic syndrome

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