Abstract
We studied the variability in doxorubicin pharmacokinetics in 27 patients, all of whom had normal liver biochemistry tests. Blood samples were collected after the first cycle of single-agent doxorubicin given as an i.v. bolus and plasma levels were measured by high-performance liquid chromatography (HPLC). The relationship of doxorubicin clearance (dose/AUC) with biochemical tests (AST, bilirubin, alkaline phosphatase, albumin, creatinine) and physical characteristics (age, gender, height, weight, tumour type) was investigated. The 6 men had a significantly higher doxorubicin clearance than did the 21 women (median values, 59 and 27 lh−1 m−2, respectively;P=0.002). Doxorubicin clearance was significantly lower in patients with breast cancer than in those with other tumours (median values, 26 and 53 lh−1 m−2, respectively;P=0.0008). The other biochemical and physical parameters did not correlate with doxorubicin clearance. However, in multivariate analysis, gender was the only factor predicting doxorubicin clearance (r 2=40%). The ratio of the AUCs for doxorubicinol and doxorubicin (R) was higher in the men than in the women (median values, 0.62 and 0.36, respectively;P=0.03). We conclude that gender may be an important determinant of doxorubicin clearance in patients with normal liver biochemistry.
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Dobbs, N.A., Twelves, C.J., Gillies, H. et al. Gender affects doxorubicin pharmacokinetics in patients with normal liver biochemistry. Cancer Chemother. Pharmacol. 36, 473–476 (1995). https://doi.org/10.1007/BF00685796
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DOI: https://doi.org/10.1007/BF00685796