Evidence map›Paper›PMID 29724170›Full record

ArticleBMC cancer2018

Association of genetic polymorphisms CYP2A6*2 rs1801272 and CYP2A6*9 rs28399433 with tobacco-induced lung Cancer: case-control study in an Egyptian population.

Nada Ezzeldin, Dalia El-Lebedy, Amira Darwish, Ahmed El Bastawisy, Shereen Hamdy Abd Elaziz, Mirhane Mohamed Hassan, Amal Saad-Hussein

Open access · goldAbstract read
In one paragraph

Article in BMC cancer, 2018. 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
2.3field-weighted citation impact, top 13% 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, 18 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

7 authors at 2 institutions in 1 country.

Nada EzzeldinChest Diseases, National Research Center, Cairo, Egypt.
Dalia El-LebedyClinical Pathology, National Research Center, Cairo, Egypt.
Amira DarwishMedical Oncology, National Cancer Institute, Cairo University, Cairo, Egypt. amiradd@yahoo.com.ORCID http://orcid.org/0000-0001-6370-0272
Ahmed El BastawisyMedical Oncology, National Cancer Institute, Cairo University, Cairo, Egypt.
Shereen Hamdy Abd ElazizClinical Pathology, National Research Center, Cairo, Egypt.
Mirhane Mohamed HassanClinical Pathology, National Research Center, Cairo, Egypt.
Amal Saad-HusseinEnvironmental Health & Preventive Medicine, National Research Center, Cairo, Egypt.
National Water Research Center · EGCairo University · EG

Funding

The Science and Technology Development Fund of Egypt (STDF) 5016
6 · The paper itself

Abstract

backgroundSeveral studies have reported the role of CYP2A6 genetic polymorphisms in smoking and lung cancer risk with some contradictory results in different populations. The purpose of the current study is to assess the contribution of the CYP2A6*2 rs1801272 and CYP2A6*9 rs28399433 gene polymorphisms and tobacco smoking in the risk of lung cancer in an Egyptian population.

methodsA case-control study was conducted on 150 lung cancer cases and 150 controls. All subjects were subjected to blood sampling for Extraction of genomic DNA and Genotyping of the CYP2A6 gene SNPs (CYP2A6*2 (1799 T > A) rs1801272 and CYP2A6*9 (- 48 T > G) rs28399433 by Real time PCR.

resultsAC and CC genotypes were detected in CYP2A6*9; and AT genotype in CYP2A6*2. The frequency of CYP2A6*2 and CYP2A6*9 were 0.7% and 3.7% respectively in the studied Egyptian population. All cancer cases with slow metabolizer variants were NSCLC. Non-smokers represented 71.4% of the CYP2A6 variants. There was no statistical significant association between risk of lung cancer, smoking habits, heaviness of smoking and the different polymorphisms of CYP2A6 genotypes.

conclusionThe frequency of slow metabolizers CYP2A6*2 and CYP2A6*9 are poor in the studied Egyptian population. Our findings did not suggest any association between CYP2A6 genotypes and risk of lung cancer.

Indexed as

Genetic Predisposition to DiseaseAdultAgedCase-Control StudiesCytochrome P-450 CYP2A6EgyptFemaleHumansLung NeoplasmsMaleMiddle AgedPolymorphism, Single NucleotideSmokingCYP2A6 protein, humanCytochrome P-450 CYP2A6CYP2A6CYP2A6*2CYP2A6*9EgyptianLung cancerNicotine metabolismPolymorphismTobacco smoking

Identifiers

PMID29724170
PMCPMC5934827
OpenAlexW2806704985

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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.