Cited by 206HER2/EGFR in Cancer ResearchPharmacogenetics and Drug MetabolismLung Cancer Treatments and Mutations

The DOI matches its Crossref record; 53 of the 53 references it cites were found in a registry or an index.

Clinical Pharmacokinetics and Pharmacodynamics of Afatinib

Open access
Wind, Sven, Schnell, David, Ebner, Thomas, Freiwald, Matthias, Stopfer, Peter·2017·Clinical Pharmacokinetics

Abstract

Afatinib is an oral, irreversible ErbB family blocker that covalently binds to the kinase domains of epidermal growth factor receptor (EGFR), human EGFRs (HER) 2, and HER4, resulting in irreversible inhibition of tyrosine kinase autophosphorylation. Studies in healthy volunteers and patients with advanced solid tumours have shown that once-daily afatinib has time-independent pharmacokinetic characteristics. Maximum plasma concentrations of afatinib are reached approximately 2-5 h after oral administration and thereafter decline, at least bi-exponentially. Food reduces total exposure to afatinib. Over the clinical dose range of 20-50 mg, afatinib exposure increases slightly more than dose proportional. Afatinib metabolism is minimal, with unchanged drug predominantly excreted in the faeces and approximately 5 % in urine. Apart from the parent drug afatinib, the major circulation species in human plasma are the covalently bound adducts to plasma protein. The effective elimination half-life is approximately 37 h, consistent with an accumulation of drug exposure by 2.5- to 3.4-fold based on area under the plasma concentration-time curve (AUC) after multiple dosing. The pharmacokinetic profile of afatinib is consistent across a range of patient populations. Age, ethnicity, smoking status and hepatic function had no influence on afatinib pharmacokinetics, while females and patients with low body weight had increased exposure to afatinib. Renal function is correlated with afatinib exposure, but, as for sex and body weight, the effect size for patients with severe renal impairment (approximately 50 % increase in AUC) is only mildly relative to the extent of unexplained interpatient variability in afatinib exposure. Afatinib has a low potential as a victim or perpetrator of drug-drug interactions, especially with cytochrome P450-modulating agents. However, concomitant treatment with potent inhibitors or inducers of the P-glycoprotein transporter can affect the pharmacokinetics of afatinib. At a dose of 50 mg, afatinib does not have proarrhythmic potential.

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Metadata

Authors
Wind, S., Schnell, D., Ebner, T., Freiwald, M., & Stopfer, P.
Affiliations
Boehringer Ingelheim (Germany) (DE)
Corresponding author
Wind, Sven
Venue
Clinical Pharmacokinetics
Published
2016-07-28
Volume
56
Issue
3
Pages
235-250
ISSN
  • 0312-5963 (ISSN-L)
  • 1179-1926
OpenAlex
W2484071785
Cited by
206
References
53
Citations by year
2026: 14 · 2025: 23 · 2024: 21 · 2023: 28 · 2022: 35 · 2021: 18 · 2020: 24 · 2019: 15 · 2018: 17 · 2017: 9 · 2016: 1
FWCI
1.41
Type
journal article
Language
en
Open access
Locations
  • Clinical Pharmacokinetics (publishedVersion, cc-by-nc)
  • PubMed Central (publishedVersion, cc-by-nc)
  • PubMed (publishedVersion)
Funders
Boehringer Ingelheim
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, EGFR, HER2, ErbB4, pharmacokinetics, pharmacodynamics, food effect, dose proportionality, renal dysfunction, P-glycoprotein, drug-drug interactions, covalent protein adducts, drug-induced arrhythmia, interindividual variability, advanced solid tumors
MeSH terms
Afatinib, Animals, Drug Interactions, Humans, Kidney, Liver, Neoplasms, Protein Binding, Quinazolines, Radiation-Sensitizing Agents, ATP Binding Cassette Transporter, Subfamily B, Member 1, Protein Kinase Inhibitors, ErbB Receptors

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