Evidence map›Paper›PMID 29920987›Full record

ArticleCPT: pharmacometrics & systems pharmacology2018

Application of PBPK Modeling and Virtual Clinical Study Approaches to Predict the Outcomes of CYP2D6 Genotype-Guided Dosing of Tamoxifen.

Toshimichi Nakamura, Kota Toshimoto, Wooin Lee, Chiyo K Imamura, Yusuke Tanigawara, Yuichi Sugiyama

Open access · goldAbstract read
In one paragraph

Article in CPT: pharmacometrics & systems pharmacology, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers.

0numbers the graph read from it
0cells of the map it votes in
7citing papers in PubMed
1.2field-weighted citation impact, top 23% 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

7 citing papers in PubMed, 16 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 3 institutions in 2 countries.

Toshimichi NakamuraDMPK Research Department, Teijin Institute for Bio-medical Research, Teijin Pharma Limited, Hino, Tokyo, Japan.
Kota ToshimotoSugiyama Laboratory, RIKEN Innovation Center, RIKEN, Yokohama, Kanagawa, Japan.
Wooin LeeCollege of Pharmacy and Research Institute of Pharmaceutical Sciences, Seoul National University, Seoul, Korea.
Chiyo K ImamuraDepartment of Clinical Pharmacokinetics and Pharmacodynamics, Keio University School of Medicine, Shinjuku-ku, Tokyo, Japan.
Yusuke TanigawaraDepartment of Clinical Pharmacokinetics and Pharmacodynamics, Keio University School of Medicine, Shinjuku-ku, Tokyo, Japan.
Yuichi SugiyamaSugiyama Laboratory, RIKEN Innovation Center, RIKEN, Yokohama, Kanagawa, Japan.
Keio University · JPSeoul National University · KRTeijin (Japan) · JP

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The Tamoxifen Response by CYP2D6 Genotype-based Treatment-1 (TARGET-1) study (n = 180) was conducted from 2012-2017 in Japan to determine the efficacy of tamoxifen dosing guided by cytochrome P450 2D6 (CYP2D6) genotypes. To predict its outcomes prior to completion, we constructed the comprehensive physiologically based pharmacokinetic (PBPK) models of tamoxifen and its metabolites and performed virtual TARGET-1 studies. Our analyses indicated that the expected probability to achieve the end point (demonstrating the superior efficacy of the escalated tamoxifen dose over the standard dose in patients carrying CYP2D6 variants) was 0.469 on average. As the population size of this virtual clinical study (VCS) increased, the expected probability was substantially increased (0.674 for n = 260). Our analyses also informed that the probability to achieve the end point in the TARGET-1 study was negatively impacted by a large variability in endoxifen levels. Our current efforts demonstrate the promising utility of the PBPK modeling and VCS approaches in prospectively designing effective clinical trials.

Indexed as

GenotypeModels, BiologicalAntineoplastic Agents, HormonalBreast NeoplasmsCytochrome P-450 CYP2D6FemaleHumansPostmenopauseProbabilityProspective StudiesReceptors, EstrogenTamoxifenAntineoplastic Agents, HormonalCytochrome P-450 CYP2D6Receptors, EstrogenTamoxifen

Identifiers

PMID29920987
PMCPMC6063740
OpenAlexW2809076202

What OpenQuestion holds

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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.