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[Chemotherapy with concomitant IFN treatment in three HBV carriers (mutant strain) with malignant lymphoma].

Intensive multidrug chemotherapy with concomitant IFN was performed in three hepatitis B virus (HBV) carriers with malignant lymphomas. All of the patients were HBsAg+, HBsAb-, HBcAb+, HBeAg- and HBeAb+ (mutant strain+). HBV-DNA polymerase (DNA-P) was normal at the beginning of chemotherapy, and complete response was achieved with CO-BLAM chemotherapy (without PDN) in all cases. In case 1, a slight elevation of DNA-P and normal GOT and GPT was observed after IFN-alpha was started during the third course. IFN-alpha was administered twice a week. In case 2, elevation of DNA-P and normal GOT and GTP were noted at the end of the 5th course, then daily IFN-alpha was started. In case 3, daily IFN-alpha was started during the 3rd course because of elevation of DNA-P. It was possible to prevent severe liver damage by administering IFN immediately after the elevation of DNA-P, since DNA-P elevation is noted before GOT and GPT elevation. The detection of the HBV mutant strain could be helpful in the treatment of HBsAg+ and HBeAb+ patients. In all of three patients, DNA-P, serum GOT and GPT normalized quickly after the administration of IFN-alpha. Severe hepatitis did not develop.