Several case-control studies have found increased prevalence of hepatitis C virus (HCV) in patients with non-Hodgkin lymphoma (NHL) and other B-cell lympho-proliferative disorders. We examined whether HCV infection preceded the development of these neoplasms in a prospective cohort study of 48 420 individuals in northern California. Stored sera from 95 subjects with NHL (n = 57), multiple myeloma (n = 24), or Hodgkin disease (n = 14) diagnosed a mean of 21 years after phlebotomy were screened for antibodies to HCV as well as viral RNA, based on previous reports of antibody-negative viremia. Sera from 4 cases and one of 95 age-, sex-, and race-matched controls were repeatedly reactive by enzyme immunoassay, but none were confirmed by recombinant immunoblot assay; none of the case sera had HCV RNA by reverse transcription-polymerase chain reaction. Although acquisition In later life cannot be ruled out, these prospective data do not support a substantial role of chronic HCV Infection in the etiology of B-cell neoplasia. (C) 2002 by The American Society of Hematology.
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