Association between hepatitis C virus and non-Hodgkin's lymphoma, and effects of viral infection on histologic subtype and clinical course
- PMID: 10335728
- DOI: 10.1016/s0002-9343(99)00069-8
Association between hepatitis C virus and non-Hodgkin's lymphoma, and effects of viral infection on histologic subtype and clinical course
Abstract
Purpose: Because an etiologic role for hepatitis C virus in non-Hodgkin's B-cell lymphoma has been suggested by several reports, we assessed the prevalence of hepatitis C virus infection in patients with non-Hodgkin's B lymphoma and in controls, and evaluated the influence of viral infection on histologic and clinical features of the lymphoma patients.
Patients and methods: We prospectively investigated 175 consecutive patients with non-Hodgkin's lymphoma and 350 controls for serologic and molecular markers of hepatitis C virus infection. Controls were selected from inpatients (n = 175) and outpatients (n = 175) cared for at our hospital. Patients with lymphoma who had hepatitis C virus infection were tested for mixed cryoglobulinemia. Aminotransferase levels were measured in all lymphoma patients at baseline and during and after chemotherapy.
Results: Hepatitis C virus prevalence in patients with non-Hodgkin's lymphoma was significantly greater than in control subjects (37% vs 9%, P = 0.0001). Among patients with lymphoma, viral infection was associated with older mean (+/-standard deviation) age (67 +/- 14 vs 61 +/- 8 years, P = 0.001), and women (41 of 87, 47%) were more likely than men (24 of 88, 27%) to have evidence of hepatitis C infection (P = 0.006). Thirteen of the 20 cases of immunocytoma were associated with hepatitis C virus infection, which was also more common in patients with orbital and conjunctival localization of lymphoma. Patients with mucosa-associated lymphoid tissue (MALT) lymphoma of the stomach were less likely to have evidence of hepatitis C infection. Mixed cryoglobulinemia was much more common in patients with hepatitis C virus infection (14 of 65 vs 1 of 110, P = 0.0001); it was not associated with the histologic type of lymphoma. Patients with and without hepatitis C virus infection underwent similar chemotherapy regimens and had no differences in response to chemotherapy or in overall and disease-free survival. Hepatic toxicity from chemotherapy was seen only in patients with hepatitis C virus infection, although all but one of these patients were able to complete their planned treatment.
Conclusion: These findings suggest that the hepatitis C virus may have a role as an etiologic agent in non-Hodgkin's B-cell lymphoma. Some clinical and pathologic features of the disease are associated with hepatitis C virus infection, but the virus does not seem to affect prognosis.
Comment in
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Hepatitis C and B-cell non-Hodgkin's lymphoma: a geographically variable association?Am J Med. 2000 Mar;108(4):350-1. doi: 10.1016/s0002-9343(99)00402-7. Am J Med. 2000. PMID: 11014733 No abstract available.
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