Evidence map›Paper›PMID 27172483›Full record

Trial reportCancer medicine2016

Adjusting for treatment switching in the METRIC study shows further improved overall survival with trametinib compared with chemotherapy.

Nicholas R Latimer, Helen Bell, Keith R Abrams, Mayur M Amonkar, Michelle Casey

Open access · goldAbstract readRandomized Controlled Trial
In one paragraph

Trial report in Cancer medicine, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 18 papers, 3 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
18citing papers in PubMed, 3 pooled it
1.9field-weighted citation impact, top 14% 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

18 citing papers in PubMed, 3 syntheses or guidelines pooled it, 30 citations in OpenAlex.

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  9. TOPK Suppresses the CD8Cancer communications (London, England) · 2026
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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

5 authors at 4 institutions in 2 countries.

Nicholas R LatimerSchool of Health and Related Research, University of Sheffield, Sheffield, United Kingdom.
Helen BellSchool of Health and Related Research, University of Sheffield, Sheffield, United Kingdom.
Keith R AbramsDepartment of Health Sciences, University of Leicester, Leicester, United Kingdom.
Mayur M AmonkarNovartis Pharmaceuticals Corporation, East Hanover, New Jersey.
Michelle CaseyPfizer, Collegeville, Pennsylvania.
University of Sheffield · GBNovartis (United States) · USPfizer (United States) · USUniversity of Leicester · GB

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Trametinib, a selective inhibitor of mitogen-activated protein kinase kinase 1 (MEK1) and MEK2, significantly improves progression-free survival compared with chemotherapy in patients with BRAF V600E/K mutation-positive advanced or metastatic melanoma (MM). However, the pivotal clinical trial permitted randomized chemotherapy control group patients to switch to trametinib after disease progression, which confounded estimates of the overall survival (OS) advantage of trametinib. Our purpose was to estimate the switching-adjusted treatment effect of trametinib for OS and assess the suitability of each adjustment method in the primary efficacy population. Of the patients randomized to chemotherapy, 67.4% switched to trametinib. We applied the rank-preserving structural failure time model, inverse probability of censoring weights, and a two-stage accelerated failure time model to obtain estimates of the relative treatment effect adjusted for switching. The intent-to-treat (ITT) analysis estimated a 28% reduction in the hazard of death with trametinib treatment (hazard ratio [HR], 0.72; 95% CI, 0.52-0.98) for patients in the primary efficacy population (data cut May 20, 2013). Adjustment analyses deemed plausible provided OS HR point estimates ranging from 0.48 to 0.53. Similar reductions in the HR were estimated for the first-line metastatic subgroup. Treatment with trametinib, compared with chemotherapy, significantly reduced the risk of death and risk of disease progression in patients with BRAF V600E/K mutation-positive advanced melanoma or MM. Adjusting for switching resulted in lower HRs than those obtained from standard ITT analyses. However, CI are wide and results are sensitive to the assumptions associated with each adjustment method.

Indexed as

Antineoplastic AgentsDacarbazineDisease ProgressionDrug SubstitutionHumansMAP Kinase Kinase 1MAP Kinase Kinase 2MelanomaMiddle AgedMutationPaclitaxelProto-Oncogene Proteins B-rafPyridonesPyrimidinonesSurvival AnalysisAntineoplastic AgentsBRAF protein, humanDacarbazineMAP2K1 protein, humanMAP2K2 protein, humanMAP Kinase Kinase 1MAP Kinase Kinase 2PaclitaxelProto-Oncogene Proteins B-rafPyridonesPyrimidinonestrametinibBRAF protein humanclinical trialdrug therapymelanomatrametinib

Identifiers

PMID27172483
PMCPMC4864810
OpenAlexW2385974944

What OpenQuestion holds

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LicenceCC BY
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.