Cited by 94HER2/EGFR in Cancer ResearchPharmacogenetics and Drug MetabolismLung Cancer Treatments and Mutations

Pharmacokinetics of Afatinib, a Selective Irreversible ErbB Family Blocker, in Patients with Advanced Solid Tumours

Wind, Sven, Schmid, Marion, Erhardt, Julia, Goeldner, Rainer-Georg, Stopfer, Peter·2013·Clinical Pharmacokinetics

Abstract

Background and objective Afatinib is a potent, irreversible, ErbB family blocker in clinical development for the treatment of a variety of solid tumours. This study evaluated the pharmacokinetics of afatinib (10-100 mg once daily) in cancer patients.Methods Data from 221 patients with advanced solid tumours in four phase I and one phase II trial were analysed using non-compartmental methods.Results Within each dose group, the shape of the geometric mean plasma concentration-time profiles after single and multiple doses were comparable. Maximum plasma concentration (C(max)) values were achieved 2-5 h after dosing and thereafter declined at least bi-exponentially. Steady-state plasma concentrations were attained within 8 days after the start of dosing. The geometric mean terminal elimination half-life at steady state was about 37 h. Repeated dosing resulted in a 2.77-fold accumulation based on the area under the plasma concentration-time curve (AUC), and 2.11-fold accumulation based on C(max) values. A slightly more than dose-proportional increase in afatinib exposure was observed. There was moderate intra-individual variability in afatinib trough concentration values (the geometric coefficient of variation (gCV) ranged from 22.2 to 67.5 %). The inter-patient variability in plasma concentrations was moderate to high (e.g. at the 40 mg dose, the gCVs ranged from 35.6 to 221 %). The exposure to afatinib (as measured by AUC and C(max)) correlated with the severity of the most common adverse events of afatinib--diarrhoea and rash.Conclusion The pharmacokinetic profile of afatinib supports a once-daily dosage regimen. As expected for this patient population, the pharmacokinetic parameters of afatinib showed moderate to high inter-patient variability. Afatinib exhibits non-linear pharmacokinetics.

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Crossref · 10.1007/s40262-013-0091-4

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Authors
Wind, S., Schmid, M., Erhardt, J., Goeldner, R.-G., & Stopfer, P.
Affiliations
Boehringer Ingelheim (Germany) (DE)
Corresponding author
Wind, Sven
Venue
Clinical Pharmacokinetics
Published
2013-06-28
Volume
52
Issue
12
Pages
1101-1109
ISSN
  • 0312-5963 (ISSN-L)
  • 1179-1926
OpenAlex
W2062869295
Cited by
94
References
27
Citations by year
2026: 2 · 2025: 3 · 2024: 3 · 2023: 8 · 2022: 6 · 2021: 6 · 2020: 6 · 2019: 5 · 2018: 9 · 2017: 5 · 2016: 14 · 2015: 7 · 2014: 17 · 2013: 3
FWCI
7.31
Type
journal article
Language
en
Open access
closed
Locations
  • Clinical Pharmacokinetics (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Health Sciences › Medicine › Oncology › HER2/EGFR in Cancer Research
  • Life Sciences › Pharmacology, Toxicology and Pharmaceutics › Pharmacology › Pharmacogenetics and Drug Metabolism
  • Health Sciences › Medicine › Pulmonary and Respiratory Medicine › Lung Cancer Treatments and Mutations
Keywords
afatinib, pharmacokinetics, advanced solid tumors, dose proportionality, interpatient variability, within-person variability, nonlinear pharmacokinetics, drug accumulation, elimination half-life, adverse events, diarrhea, rash, once-daily dosing, cancer patients
MeSH terms
Afatinib, Adolescent, Adult, Aged, Aged, 80 and over, Antineoplastic Agents, Female, Humans, Male, Middle Aged, Neoplasms, Quinazolines, Erb-b2 Receptor Tyrosine Kinases, Protein Kinase Inhibitors, Young Adult

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