The mean (%CV) tenofovir Cmax and AUC0-∞ values were 223 (34.8%) ng/ ml and 2,050 (50.8%) ng·h/ ml, respectively, in normal subjects compared with 289 (46.0%) ng/ ml and 2,310 (43.5%) ng·h/ ml in subjects with moderate hepatic impairment, and 305 (24.8%) ng/ ml and 2,740 (44.0%) ng·h/ ml in subjects with severe hepatic impairment.