Evidence map›Paper›PMID 25022720›Full record

ArticleClinical drug investigation2014

Effect of rifampicin on the pharmacokinetics of lenvatinib in healthy adults.

Robert C Shumaker, Jagadeesh Aluri, Jean Fan, Gresel Martinez, Gary A Thompson, Min Ren

Open access · hybridAbstract readClinical Trial, Phase I
In one paragraph

Article in Clinical drug investigation, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 36 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
36citing papers in PubMed, 1 pooled it
4.3field-weighted citation impact, top 6% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

36 citing papers in PubMed, 1 synthesis or guideline pooled it, 72 citations in OpenAlex.

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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

6 authors at 1 institution in 1 country.

Robert C ShumakerEisai Inc., Woodcliff Lake, NJ, USA, Robert_shumaker@eisai.com.
Jagadeesh Aluri
Jean Fan
Gresel Martinez
Gary A Thompson
Min Ren
Eisai (United States) · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

BACKGROUND AND

objectivesLenvatinib is an oral, multitargeted tyrosine kinase inhibitor under clinical investigation in solid tumours. This study evaluated the influence of P-glycoprotein (P-gp) inhibition (single-dose rifampicin) and simultaneous cytochrome P450 3A4 (CYP3A4)/P-gp induction (multiple-dose rifampicin) on lenvatinib pharmacokinetics.

methodsThis Phase I, single-centre, single-dose (lenvatinib mesylate 24 mg), open-label, sequential study enrolled 15 healthy volunteers. Three regimens were administered over three periods: Period (P) 1 (Days 1-8), P2 (Days 15-22) and P3 (Days 29-50), with a 14-day (first dose) and 28-day (second dose) washout period after lenvatinib mesylate administration (Day 1, Day 15 and Day 43). In P2, a single oral dose of rifampicin (600 mg) was coadministered with lenvatinib. In P3, rifampicin was administered daily (600 mg) for 21 days (Days 29-49). Serial blood samples were collected, and plasma concentrations of total (protein bound + unbound) and free (unbound) lenvatinib and total metabolites (M1, M2, M3 and M5) were measured by validated high-performance liquid chromatography/tandem mass spectrometry.

resultsSingle-dose rifampicin (P-gp inhibition) increased area under the plasma concentration-time curve from time zero to infinity (AUC0-∞) of free and total lenvatinib by 32 and 31 %, respectively. Multiple-dose rifampicin (simultaneous P-gp and CYP3A4 induction) decreased lenvatinib AUC0-∞ (total: 18 %; free: 9 %). Treatment-emergent adverse events were mild or moderate and occurred in 7 subjects (47 %).

conclusionLenvatinib exposure was increased by P-gp inhibition; however, based on free concentrations, simultaneous P-gp and CYP3A4 induction results met the prespecified bioequivalence 90 % confidence interval. Overall, the magnitude of these changes was relatively small, and likely not clinically meaningful.

Indexed as

Administration, OralAdultAntibiotics, AntitubercularArea Under CurveATP Binding Cassette Transporter, Subfamily B, Member 1Chromatography, High Pressure LiquidCytochrome P-450 CYP3ACytochrome P-450 CYP3A InducersDrug InteractionsFemaleHumansMaleMiddle AgedPhenylurea CompoundsProtein Kinase InhibitorsQuinolinesAntibiotics, AntitubercularATP Binding Cassette Transporter, Subfamily B, Member 1CYP3A4 protein, humanCytochrome P-450 CYP3ACytochrome P-450 CYP3A InducerslenvatinibPhenylurea CompoundsProtein Kinase InhibitorsQuinolinesRifampin

Identifiers

PMID25022720
PMCPMC4143598
OpenAlexW2055819290

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.