Evidence map›Paper›PMID 26092210›Full record

SynthesisCellular oncology (Dordrecht, Netherlands)2015

RRM1 expression is associated with the outcome of gemcitabine-based treatment of non-small cell lung cancer patients--a short report.

Chuan Zeng, Weidong Fan, Xianquan Zhang

Abstract readMeta-Analysis
In one paragraph

Synthesis in Cellular oncology (Dordrecht, Netherlands), 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 9 papers.

0numbers the graph read from it
0cells of the map it votes in
9citing papers in PubMed
1.0field-weighted citation impact, top 26% 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

9 citing papers in PubMed, 14 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

3 authors at 2 institutions in 1 country.

Chuan ZengThe Second Affiliated Hospital, Department of Oncology, Chongqing Medical University, NO.74, Linjiang road, Yuzhong district, Chongqing, China.
Weidong Fan
Xianquan Zhang
Second Affiliated Hospital of Chongqing Medical University · CNDalian Medical University · CN

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeRRM1 is the large subunit of ribonucleotide reductase (RNR), which catalyzes the rate-limiting step in the production of deoxyribonucleotides (dNTPs) and is essential for DNA synthesis and repair. Through a meta-analysis of observational studies, we evaluated whether RRM1 expression levels are associated with the clinical outcome of gemcitabine-containing treatment regimens in patients with advanced non-small cell lung cancer (NSCLC).

methodsA literature search was conducted using the PubMed, Embase, Web of Science, Wanfang and Chinese National Knowledge Infrastructure databases from inception to September 2014. A meta-analysis was conducted to pool eligible studies, and pooled analyses were performed using fixed effects models.

resultsA total of 12 studies encompassing 593 NSCLC patients met our search criteria and were, therefore, included. Pooled analyses revealed that patients with low/negative RRM1 expression levels exhibited significantly higher response rates (OR: 0.35, 95 % CI 0.24-0.51) and better survival rates (OR: 0.41, 95 % CI 0.23-0.75) than those with high/positive RRM1 expression levels. Subgroup analyses did not reveal any significant heterogeneity in outcome regarding the RRM1 assessment methods used or the ethnicities of patient populations studied.

conclusionsThe meta-analysis reported here indicates that RRM1 expression is associated with the response rate and overall survival rate of advanced NSCLC patients treated with gemcitabine-based chemotherapy. Additional phase III randomized trials are required to confirm our current findings.

Indexed as

Gene Expression Regulation, NeoplasticAntineoplastic Combined Chemotherapy ProtocolsCarcinoma, Non-Small-Cell LungDeoxycytidineGemcitabineHumansImmunohistochemistryLung NeoplasmsPrognosisReverse Transcriptase Polymerase Chain ReactionRibonucleoside Diphosphate ReductaseSurvival AnalysisTreatment OutcomeTumor Suppressor ProteinsDeoxycytidineGemcitabineRibonucleoside Diphosphate ReductaseRRM1 protein, humanTumor Suppressor Proteins

Identifiers

PMID26092210
PMCPMC13004178
OpenAlexW626605337

What OpenQuestion holds

Textmetadata
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.