Amyloid fibrils consist in part of immunoglobulin light chains. Because light chains are synthesized by plasma cells, it seems reasonable to treat patients with amyloidosis with alkylating agents. Two patients who had primary amyloidosis and were treated with melphalan subsequently developed a rapidly fatal acute leukemia. Since melphalan may play a significant role in the development of acute leukemia, we suggest that alkylating agents not be used in the treatment of patients with amyloidosis without full consideration of risks involved, particularly until it has been proved that these drugs are beneficial.

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© 1974 by American Society of Hematology, Inc.
1974
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