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.jpg): Failed to open stream: No such file or directory in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 117 Br+J+Clin+Pharmacol
2014 ; 78
(3
): 524-32
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Concomitant oral and intravenous pharmacokinetics of trametinib, a MEK inhibitor,
in subjects with solid tumours
#MMPMID24606567
Leonowens C
; Pendry C
; Bauman J
; Young GC
; Ho M
; Henriquez F
; Fang L
; Morrison RA
; Orford K
; Ouellet D
Br J Clin Pharmacol
2014[Sep]; 78
(3
): 524-32
PMID24606567
show ga
AIMS: The aim of this phase 1, single centre, open label study in four patients
with solid tumours was to determine the absolute bioavailability of a 2?mg oral
dose of trametinib. Trametinib is an orally bioavailable, reversible and
selective allosteric inhibitor of MEK1 and MEK2 activation and kinase activity.
METHODS: A microtracer study approach, in which a 5??g radiolabelled i.v.
microdose of trametinib was given concomitantly with an unlabelled 2?mg oral
tablet formulation, was used to recover i.v. and oral pharmacokinetic parameters,
simultaneously. RESULTS: The least-squares mean (90% confidence interval)
absolute bioavailability of trametinib (2?mg tablet) was 72.3% (50.0%, 104.6%).
Median tmax after oral administration was 1.5?h and the geometric mean terminal
half-life was 11?days. The geometric mean clearance and volume of distribution
after i.v. administration were 3.21?l?h(-1) and 976?l, respectively, resulting in
a terminal elimination half-life of 11?days. CONCLUSIONS: Trametinib absolute
bioavailability was moderate to high, whereas first pass metabolism was low.
|Administration, Intravenous
[MESH]
|Administration, Oral
[MESH]
|Antineoplastic Agents/*administration & dosage/pharmacokinetics/therapeutic use
[MESH]