Evidence map›Paper›PMID 22014025›Full record

ReviewJournal of experimental & clinical cancer research : CR2011

CYP1A1 MspI and exon7 gene polymorphisms and lung cancer risk: an updated meta-analysis and review.

Ping Zhan, Qin Wang, Qian Qian, Shu-Zhen Wei, Li-Ke Yu

Open access · goldAbstract readReview
In one paragraph

Review in Journal of experimental & clinical cancer research : CR, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 36 papers, 11 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
36citing papers in PubMed, 11 pooled it
3.3field-weighted citation impact, top 7% 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

36 citing papers in PubMed, 11 syntheses or guidelines pooled it, 57 citations in OpenAlex.

  1. Pooled it
  2. GSTM1 null polymorphisms and oral cancer risk: a meta-analysis.Tumour biology : the journal of the International Society for Oncodevelopmental Biology and Medicine · 2014
    Pooled it
  3. Pooled it
  4. Association between the XRCC3 C241T polymorphism and lung cancer risk in the Asian population.Tumour biology : the journal of the International Society for Oncodevelopmental Biology and Medicine · 2013
    Pooled it
  5. Pooled it
  6. Pooled it
  7. Cytochrome P450 1A1 Ile462Val polymorphism and oral carcinoma risk: an updated meta-analysis including 1,515 cases and 2,233 controls.Tumour biology : the journal of the International Society for Oncodevelopmental Biology and Medicine · 2012
    Pooled it
  8. Pooled it
  9. Quantitative assessment of the associations between CYP1A1 polymorphisms and gastric cancer risk.Tumour biology : the journal of the International Society for Oncodevelopmental Biology and Medicine · 2012
    Pooled it
  10. Pooled it
  11. Pooled it
  12. Article
  13. Article
  14. Article
  15. Review
  16. Article
  17. Review
  18. The Relationship ofJournal of clinical medicine · 2021
    Article
  19. Review
  20. Article
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 3 institutions in 1 country.

Ping ZhanFirst Department of Respiratory Medicine, Nanjing Chest Hospital, 215 Guangzhou Road, Nanjing 210029, China.
Qin Wang
Qian Qian
Shu-Zhen Wei
Li-Ke Yu
Nanjing Chest Hospital · CN81th Hospital of PLA · CNNanjing General Hospital of Nanjing Military Command · CN

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundMany studies have examined the association between the CYP1A1 MspI and exon 7 gene polymorphisms and lung cancer risk in various populations, but their results have been inconsistent.

methodsTo assess this relationship more precisely, a meta-analysis and review were performed. The PubMed, Embase, Web of Science, and CNKI database was searched for case-control studies published up to June 2010. Data were extracted and pooled odds ratios (OR) with 95% confidence intervals (CI) were calculated.

resultsUltimately, 64 studies, comprising 18,397 subjects from 49 case-control studies of the MspI genotype and 18,518 patients from 40 case-control studies of the exon 7 genotype, were included. A significantly elevated lung cancer risk was associated with 2 MspI genotype variants (for type C vs. Type A: OR = 1.26, 95% CI = 1.12-1.42; for types B and C combined vs. Type A: OR = 1.20, 95% CI = 1.13-1.28) in overall population. In the stratified analysis, a significant association was found in Asians, Caucasians, lung SCC, lung AC and Male population, not in mixed population, lung SCLC and female population. However, inconsistent results were observed for CYP1A1 exon7 in our meta-analysis, two variants of the exon 7 polymorphism were associated with a significantly higher risk for lung cancer (for Val/Val vs. Ile/Ile: OR = 1.24, 95% CI = 1.09-1.42; for (Ile/Val +Val/Val) vs. Ile/Ile: OR = 1.15, 95% CI = 1.07-1.24) in overall population. In the stratified analysis, a significant assocation was found in Asians, Caucasians, lung SCC and Female population, not in mixed population, lung AD, lung SCLC and Male population. Additionally, a significant association was found in smoker population and not found in non-smoker populations for CYP1A1 MspI and exon7 gene.

conclusionsThis meta-analysis suggests that the MspI and exon 7 polymorphisms of CYP1A1 correlate with increased lung cancer susceptibility and there is an interaction between two genotypes of CYP1A1 polymorphism and smoking, but these associations vary in different ethnic populations, histological types of lung cancer and gender of case and control population.

Indexed as

Case-Control StudiesCytochrome P-450 CYP1A1Deoxyribonuclease HpaIIExonsFemaleHumansLung NeoplasmsMaleMeta-Analysis as TopicPolymorphism, GeneticRisk FactorsCytochrome P-450 CYP1A1Deoxyribonuclease HpaII

Identifiers

PMID22014025
PMCPMC3212928
OpenAlexW2107087407

What OpenQuestion holds

Textmetadata
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.