Evidence map›Paper›PMID 17427032›Full record

SynthesisJournal of human genetics2007

Cytochrome P450 1A1 (CYP1A1) T3801C and A2455G polymorphisms in breast cancer risk: a meta-analysis.

Chengwen Chen, Yan Huang, Yao Li, Yumin Mao, Yi Xie

Open access · bronzeAbstract readMeta-Analysis
PubMed Publisher
In one paragraph

Synthesis in Journal of human genetics, 2007. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 12 papers, 5 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
12citing papers in PubMed, 5 pooled it
2.8field-weighted citation impact, top 11% 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

12 citing papers in PubMed, 5 syntheses or guidelines pooled it, 35 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

5 authors at 2 institutions in 1 country.

Chengwen ChenState Key Laboratory of Genetic Engineering, Institute of Genetics, School of Life Science, Fudan University, Shanghai, 200433, People's Republic of China.
Yan HuangState Key Laboratory of Genetic Engineering, Institute of Genetics, School of Life Science, Fudan University, Shanghai, 200433, People's Republic of China.
Yao LiState Key Laboratory of Genetic Engineering, Institute of Genetics, School of Life Science, Fudan University, Shanghai, 200433, People's Republic of China.
Yumin MaoState Key Laboratory of Genetic Engineering, Institute of Genetics, School of Life Science, Fudan University, Shanghai, 200433, People's Republic of China.
Yi XieState Key Laboratory of Genetic Engineering, Institute of Genetics, School of Life Science, Fudan University, Shanghai, 200433, People's Republic of China. yxie@fudan.edu.cn.
State Key Laboratory of Genetic EngineeringFudan University · CN

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The cytochrome P450 1A1 gene (CYP1A1), encoding Phase I metabolic enzymes, appeared to be a candidate gene for breast cancer risk. However, studies on the association between polymorphisms in this gene and breast cancer have yielded conflicting results. We performed a meta-analysis to investigate the association with breast cancer of the CYP1A1 polymorphisms T3801C (9,316 cases and 12,714 controls) and A2455G (9,552 cases and 9,320 controls). In the genotype contrast of A2455G, both additive [GG vs AA, P = 0.04, fixed-effects OR 0.72; 95% CI (0.53-0.99), P = 0.95 for heterogeneity] and recessive [GG vs (GA + AA), P = 0.04, fixed-effects OR 0.73; 95% CI (0.53-0.99), P = 0.97 for heterogeneity] models produced significant results in east-Asians. In pre-menopausal women in a worldwide population, significant association between A2455G and breast cancer was also found using both models [additive model: P = 0.02, fixed-effects OR 0.52; 95% CI (0.29-0.92), P = 0.39 for heterogeneity; recessive model: P = 0.02, fixed-effects OR 0.51; 95% CI (0.29-0.90), P = 0.38 for heterogeneity]. Our meta-analysis suggests that an A2455G G/G genotype is associated with a trend of reduced breast cancer risk, both in east-Asian women and in pre-menopausal women worldwide, while the T3801C C allele might not be a risk factor for breast cancer. Larger scale primary studies are required to further evaluate the interaction of CYP1A1 polymorphisms and breast cancer risk in specific populations.

Indexed as

Genetic Predisposition to DiseasePolymorphism, GeneticAdultBreast NeoplasmsCase-Control StudiesCytochrome P-450 CYP1A1FemaleHumansMenopauseMiddle AgedCytochrome P-450 CYP1A1

Identifiers

PMID17427032
OpenAlexW1964971298

What OpenQuestion holds

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Registered trials

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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.