Interferon-alpha (IFN-alpha) has been successfully employed in the treatmen
t of several hematologic malignancies. IFN-alpha therapy can cause a variet
y of long-term side effects such as thyroid dysfunction, development of oth
er autoimmune diseases and the isolated appearance of autoantibodies. In th
is paper we describe the occurence of fatal bone marrow aplasia in a patien
t with chronic myelogenous leukemia (CML) during IFN-alpha treatment.