Paraproteinemia, plasmacytoma, myeloma and HIV infection

Leukemia
A S Fiorino, B Atac

Abstract

We have identified by MEDLINE search the cases of gammaglobinopathy and plasma cell malignancy in HIV-positive patients reported in the English language literature. The average age at presentation among HIV-positive patients with plasma cell disorders is 33 years, far younger than the average age of presentation in the general population. Some of these patients present with transient paraproteinemias, while others have persistent paraproteins, which may or may not be associated with true plasma cell malignancies. In most cases in which it has been examined, the paraprotein contains high-titer anti-HIV activity. The presence of high-titer anti-HIV activity in the paraproteins of AIDS patients suggests that an antigen-driven process in response to HIV infection may contribute to the early development of plasma cell disorders in these patients. Recent work in plasma cell tumorigenesis has indicated that transformation at a single point in the B lymphocyte lineage can give rise to either lymphoma or myeloma, dependent upon environmental factors such as T cell function, which may be required for directing transformed lymphocytes from lymphoma and towards plasma cell differentiation. This may explain why B lineage oncogenesis in AIDS...Continue Reading

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