Abstract
Recently, gamma-glutamyl transferase (GGT) has been investigated as a predictive factor for therapy response in hepatitis C patients, but so far its value in pretreatment screening has not been established. Therefore, this study aimed at evaluating GGT as an independent predictive factor for the response to treatment with interferon-alpha and ribavirin in hepatitis C virus (HCV)-infected patients. Naive chronic hepatitis C patients undergoing a 6-month follow-up after interferon-alpha and ribavirin therapy had their sustained virologic response (SVR) analyzed according to age, sex, body mass index, GGT levels, genotype, and liver histology by use of a multivariate logistic regression model. Of the 211 patients studied with a mean age of 48+/-10 years, 125 (59%) were males. Overweight was detected in 47% of patients. Genotype 1 was detected in 141 (75%) of the 187 patients tested. Cirrhosis was present in 67 (32%). A high pretreatment GGT level was observed in 134 (63%). SVR was obtained in 84 (40%) patients. In the final logistic regression model, the variables independently associated with SVR were GGT (P<0.001), genotype (P<0.001), and liver histology (P<0.001). A normal GGT level is an independent predictive factor for SVR in HCV-infected patients and should be considered for pretreatment screening.
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