Hepatotoxicity with low- and ultralow-dose flutamide: A surveillance study on 203 hyperandrogenic young females

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Objective: To investigate the impact of low- and ultralow-dose regimens of flutamide on liver function of young hyperandrogenic females. Design: A 10-year surveillance study. Setting: University teaching hospital. Patient(s): Two hundred three hyperandrogenic young females (mean age: 20.9 ± 4.9 years). Intervention(s): Inclusion criterion was receiving low- or ultralow-dose of flutamide as antiandrogenic treatment. Patients were categorized into Groups A and B, according to the administered dose (Group A = 62.5 mg/daily, Group B = 125 mg/daily). The two groups were further subdivided into subgroups (A1, A2, B1, B2) depending on the coadministration of estroprogestagen oral contraceptives (OCs) (A2, B2). Main Outcome Measure(s): Serum levels of alanine aminotransferase (ALT) and aspartate aminotransferase (AST) were periodically evaluated and used as markers of hepatotoxicity. Result(s): Mild-to-severe increase of circulating AST/ALT was detected in 19 (9.4%; 95% CI = 5.9%-14.4%) patients during the first year of treatment (mild = 16 [7.9%, 95% CI = 4.7%-12.7%], moderate = 2 [0.9%, 95% CI = 0.1%-3.9%], severe = 1 [0.5%, 95% CI = 0.0%-3.1%]). No statistical differences were observed in relation to flutamide dose regimens and coadministration of OC. The median time to hypertransaminasemia was 12 weeks (range: 2-48) with no difference between Group A and Group B. A significant correlation was observed between hepatotoxicity and pretreatment BMI, ALT basal level, and AST basal level. Conclusion(s): Hepatotoxicity is a rare but possible event using low- and ultralow-dose regimens of flutamide. We need larger study populations in order to identify risk patterns for hepatotoxicity development. © 2012 American Society for Reproductive Medicine, Published by Elsevier Inc.




Bruni, V., Peruzzi, E., Dei, M., Nannini, S., Seravalli, V., Sisti, G., & Fambrini, M. (2012). Hepatotoxicity with low- and ultralow-dose flutamide: A surveillance study on 203 hyperandrogenic young females. Fertility and Sterility, 98(4), 1047–1052. https://doi.org/10.1016/j.fertnstert.2012.06.018

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