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Cancer Chemother Pharmacol. 2012 Mar;69(3):605-12. doi: 10.1007/s00280-011-1733-6. Epub 2011 Sep 22.

An open-label study to describe pharmacokinetic parameters of erlotinib in patients with advanced solid tumors with adequate and moderately impaired hepatic function.

Author information

1
Department of Clinical Pharmacy, School of Pharmacy, University of Colorado Cancer Center, Mail Stop C238, 12850 East Montview Blvd., V20-1223, Aurora, CO, 80045, USA. Cindy.OBryant@ucdenver.edu

Abstract

PURPOSE:

To compare the pharmacokinetic (PK) parameters of a single dose of erlotinib in cancer patients with moderate hepatic impairment (MHI) to those of cancer patients with adequate hepatic function (AHF).

METHODS:

Cancer patients with either AHF or MHI were treated with a single 150 mg dose of erlotinib on day 1 only followed by 96 h of plasma sampling for PK assessment. From day 5, patients were allowed to continue daily erlotinib in a maintenance phase. Non-smoking patients were stratified into an AHF cohort (total bilirubin ≤ upper limit of normal [ULN] and ALT/AST ≤ 1.5 X ULN) or a MHI cohort (Child-Pugh score of 7-9). The frequency of adverse events and laboratory changes were assessed.

RESULTS:

Thirty-six patients, 21 with AHF and 15 with MHI, received at least one dose of erlotinib. The PK of erlotinib was similar between the two cohorts with a median C (max) of 1.09 versus 0.828 μg/mL and corresponding median AUC(0-t ) 29.3 versus 30.5 μg h/mL for the AHF and MHI cohorts, respectively. Adverse events from erlotinib in cancer patients with MHI were consistent with the known safety profile.

CONCLUSIONS:

The PK and safety profiles of erlotinib in patients with MHI were similar to those with AHF. As a result, a reduced starting dose of erlotinib in patients with MHI is not required and treatment should be guided by patients' tolerability.

PMID:
21938545
DOI:
10.1007/s00280-011-1733-6
[Indexed for MEDLINE]

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