Afatinib pharmacokinetics and metabolism after oral administration to healthy male volunteers.

04:24 EDT 1st November 2014 | BioPortfolio

Summary of "Afatinib pharmacokinetics and metabolism after oral administration to healthy male volunteers."


PURPOSE:
To investigate the pharmacokinetics, metabolism and tolerability of afatinib (BIBW 2992), an oral irreversible ErbB family blocker, in healthy male volunteers.
METHODS:
In this open-label, single-center study, 8 healthy male volunteers received a single oral dose of 15 mg [(14)C]-radiolabeled afatinib (equivalent to 22.2 mg of the dimaleinate salt) as a solution. Blood, urine and fecal samples were collected for at least 96 hours (h) after dosing. Plasma and urine concentrations of afatinib were analyzed using high-performance liquid chromatography-tandem mass spectrometry. [(14)C]-radioactivity levels in plasma, whole blood, urine and feces were measured by liquid scintillation counting methods. Metabolite patterns were assessed by high-performance liquid chromatography.
RESULTS:
[(14)C]-radioactivity was mainly excreted via feces (85.4%). Overall recovery of [(14)C]-radioactivity was 89.5%, indicative of a complete mass balance. Afatinib was slowly absorbed, with maximum plasma concentrations achieved at a median of 6 h after dosing, declining thereafter in a biexponential manner. The geometric mean terminal half-life of afatinib was 33.9 h in plasma and longer for [(14)C]-radioactivity in plasma and whole blood. Apparent total body clearance for afatinib was high (geometric mean 1,530 mL/min). The high volume of distribution (4,500 L) in plasma may indicate a high tissue distribution. Afatinib was metabolized to only a minor extent, with the main metabolite afatinib covalently bound to plasma proteins. Oxidative metabolism mediated via cytochrome P-450 was of negligible importance for the elimination of afatinib. Afatinib was well tolerated.
CONCLUSIONS:
Afatinib displayed a complete mass balance with the main route of excretion via feces. Afatinib undergoes minimal metabolism.

Affiliation

Boehringer Ingelheim Pharma GmbH & Co. KG, Birkendorfer Strasse, 88400, Biberach an der Riss, Germany, Peter.Stopfer@boehringer-ingelheim.com.

Journal Details

This article was published in the following journal.

Name: Cancer chemotherapy and pharmacology
ISSN: 1432-0843
Pages:

Links

PubMed Articles [15746 Associated PubMed Articles listed on BioPortfolio]

Comparative pharmacokinetics and bile transformation of R-enantiomer and racemic bambuterol after single-dose intravenous, oral administration in rats and beagle dogs.

This study was to compare pharmacokinetics and bile transformation of R-enantiomer bambuterol with its racemate. Pharmacokinetics of R-enantiomer was investigated after single-dose intravenous and thr...

Pharmacokinetics of chlorogenic acid and corydaline in DA-9701, a new botanical gastroprokinetic agent, in rats.

Abstract 1.  Few studies describing the pharmacokinetic properties of chlorogenic acid (CA) and corydaline (CRD) which are marker compounds of a new prokinetic botanical agent, DA-9701, have been re...

Pharmacokinetics of amoxicillin trihydrate in cultured olive flounder (Paralichthys olivaceus).

The study was aimed at investigating the pharmacokinetics of amoxicillin trihydrate (AMOX) in olive flounder (Paralichthys olivaceus) following oral, intramuscular, and intravenous administration, usi...

Pharmacokinetics and tissue distribution of ginsenoside Rh2 and Rg3 epimers after oral administration of BST204, a purified ginseng dry extract, in rats.

Abstract BST204, a purified ginseng dry extract containing a high concentration of racemic Rh2 and Rg3 mixtures, is being developed for supportive care use in cancer patients in Korea. This study inve...

Pharmacokinetics and pharmacodynamics of oral and intravenous cefetamet in dog.

The pharmacokinetic (PK) and pharmacodynamic (PD) properties of intravenously (IV) administered cefetamet-Na and per os (PO) administered cefetamet pivoxil were investigated in eighteen healthy dogs a...

Clinical Trials [5168 Associated Clinical Trials listed on BioPortfolio]

A Phase I Dose Escalation Trial of Afatinib Plus Gemcitabine or Plus Docetaxel

To establish the maximum tolerated dose (MTD) of oral afatinib (BIBW2992) given in combination with gemcitabine or docetaxel in patients with relapsed or refractory tumors. To assess the ...

Open-Label Absorption, Distribution, Metabolism, Excretion (ADME) and Pharmacokinetics (PK) Following a Single Oral Dose of AZD1236 in Healthy Male Subjects

The purpose of this study is to characterise the metabolism, excretion and pharmacokinetics of a single oral dose of [14C] AZD1236 in healthy male subjects.

Lux-Breast 3; Afatinib Alone or in Combination With Vinorelbine in Patients With Human Epidermal Growth Factor Receptor 2 (HER2) Positive Breast Cancer Suffering From Brain Metastases

The aim of this study is to investigate the efficacy and safety of afatinib alone or in combination with vinorelbine, as treatment in patients with HER2-overexpressing metastatic breast c...

LUX-Breast 2; Afatinib in HER2 (Human Epidermal Growth Factor Receptor)-Treatment Failures

The general aim of this study is to investigate the efficacy and safety of afatinib (BIBW 2992) alone and in combination with weekly paclitaxel or weekly vinorelbine (in patients who prog...

ADAM-Afatinib Diarrhea Assessment and Management

This is a non-randomized, open label, two-cohort, multi-institutional study to evaluate the use of diarrheal management tools intended to facilitate timely intervention and treatment modif...

Medical and Biotech [MESH] Definitions

Agents that aid or increase the action of the principle drug (DRUG SYNERGISM) or that affect the absorption, mechanism of action, metabolism, or excretion of the primary drug (PHARMACOKINETICS) in such a way as to enhance its effects.

The giving of drugs, chemicals, or other substances by mouth.

Hard or soft soluble containers used for the oral administration of medicine.

MYCOBACTERIUM infections of the male reproductive tract (GENITALIA, MALE).

Pathological processes involving the male reproductive tract (GENITALIA, MALE).

Search BioPortfolio:
Loading
Advertisement

Relevant Topics

Top five promising drugs (November 2013)
Latest News Clinical Trials Research Drugs Reports Corporate
THE FIVE MOST PROMISING DRUGS LAUNCHED OR RECEIVING APPROVAL DRUG DISEASE COMPANY Gilotrif™ (afatinib) Non-small-cell lung cancer (NSCLC) Boehringer Ingelheim Typbar...

Gilotrif (afatinib)
Latest News Clinical Trials Research Drugs Reports Corporate
GILOTRIF (afatinib) is a kinase inhibitor indicated for the first-line treatment of patients with metastatic non-small cell lung cancer (NSCLC) whose tumors have epidermal growth factor receptor (EGFR) exon 19 deletions or exon 21 (L8...

Advertisement