ReviewTobacco induced diseases2020
Cytochrome P450 2A6 whole-gene deletion (CYP2A6*4) polymorphism reduces risk of lung cancer: A meta-analysis.
Review in Tobacco induced diseases, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 9 papers, 2 of them syntheses that pooled 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.
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.
Who cites it
9 citing papers in PubMed, 2 syntheses or guidelines pooled it, 14 citations in OpenAlex.
- Unveiling the link: Evaluating MTHFR gene polymorphisms and colorectal cancer risk through meta-analysis.PloS one · 2025Pooled it
- Association between CYP2E1 polymorphisms and colorectal cancer risk: a systematic review and meta-analysis.Scientific reports · 2022Pooled it
- Article
- Novel CYP2A7/CYP2A6 germline hybrids associated with mutation burden in lung cancer revealed by whole-genome long-read sequencing.Scientific reports · 2025Article
- A quantitative comparison of the deleteriousness of missense and nonsense mutations using the structurally resolved human protein interactome.Protein science : a publication of the Protein Society · 2025Article
- Associating CYP2A6 structural variants with ovarian and lung cancer risk in the UK Biobank: replication and extension.European journal of human genetics : EJHG · 2024Article
- Comparison of genetic susceptibility to lung adenocarcinoma and squamous cell carcinoma in Japanese patients using a novel panel for cancer-related drug-metabolizing enzyme genes.Scientific reports · 2022Article
- A review on the genetic polymorphisms and susceptibility of cancer patients in Bangladesh.Molecular biology reports · 2022Review
- Biochemistry of nicotine metabolism and its relevance to lung cancer.The Journal of biological chemistryReview
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
4 authors at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
introductionLung cancer is the most commonly diagnosed cancer worldwide and is the leading cause of cancer death. Smoking is a major contributor to the pathogenesis of lung cancer. Cytochrome P450 2A6 (
methodsThe PubMed, SAGE, Science Direct, the Cochrane Library and Ovid databases were searched for observational studies before October 2018. Methodological quality was assessed using the Newcastle-Ottawa Quality Assessment Scale (NOS).
resultsNine case-control studies involving 4385 lung cancer cases and 4142 controls were included in the analysis. The random-effects model was used to combine results from individual studies. The pooled odds ratio was 0.39 (95% CI: 0.27-0.56). There was no heterogeneity across studies (χ
conclusionsCurrent evidence from the case-control studies suggests that the
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What OpenQuestion holds
Registered trials
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.