Evidence map›Paper›PMID 16228113›Full record

ArticleJournal of human genetics2005

Possible risk modification by CYP1A1, GSTM1 and GSTT1 gene polymorphisms in lung cancer susceptibility in a South Indian population.

Leelakumari Sreeja, Vani Syamala, Sreedharan Hariharan, Jayaprakash Madhavan, Sivanandan Choondal Devan, Ravindran Ankathil

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In one paragraph

Article in Journal of human genetics, 2005. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 32 papers, 8 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
32citing papers in PubMed, 8 pooled it
1.9field-weighted citation impact, top 15% 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

32 citing papers in PubMed, 8 syntheses or guidelines pooled it, 93 citations in OpenAlex.

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  5. Combined effects of CYP1A1 MspI and GSTM1 genetic polymorphisms on risk of lung cancer: an updated meta-analysis.Tumour biology : the journal of the International Society for Oncodevelopmental Biology and Medicine · 2014
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  14. GSTM1 and GSTT1 Genetic Polymorphisms and Breast Cancer Risk in Selected Filipino CasesAsian Pacific journal of cancer prevention : APJCP · 2019
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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

6 authors at 1 institution in 1 country.

Leelakumari SreejaDivision of Cancer Research, Regional Cancer Centre, Thiruvananthapuram, Kerala, 695011, India.
Vani Syamala
Sreedharan Hariharan
Jayaprakash Madhavan
Sivanandan Choondal Devan
Ravindran Ankathil
Regional Cancer Center, Thiruvananthapuram · IN

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Susceptibility to lung cancer has been shown to be modulated by inheritance of polymorphic genes encoding cytochrome P450 1A1 (CYP1A1) and glutathione S transferases (GSTM1 and GSTT1), which are involved in the bioactivation and detoxification of environmental toxins. As the incidence of lung cancer is known to differ according to ethnicity, we have conducted a case-control study of 146 South Indian lung cancer patients along with 146 healthy controls, to assess any association between CYP1A1, GSTM1 and GSTT1 polymorphisms, either separately or in combination, with the likelihood of development of lung cancer in our population. The current weight of evidence from our study indicated that the frequency of CYP1A1 MspI homozygous variant alleles was significantly higher in cases (OR = 3.178). We observed a considerable difference in the GSTT1 null deletion frequency in this population when compared with other populations (OR = 2.472, 95% CI: 1.191-5.094, P = 0.014). There was no relative risk in GSTM1 null genotype when analysed singly (P = 0.453). Considering genotype combinations, risk of lung cancer increased remarkably significantly in individuals having one variant allele of CYP1A1, GSTM1, or GSTT1, suggesting gene-gene interactions. Rare genotypic combinations (such as CYP1A1 wild GSTM1 or GSTT1 either null; CYP1A1 variant both GSTM1 and GSTT1 present; CYP1A1 variant GSTM1 or GSTT1 either null), were at higher risk compared to the reference group. Moreover, patients who had smoked <20 pack years and harboured the CYP1A1 variant allele or the GSTT1 null genotype also had a significant risk of lung cancer. Hence our study-the first to analyse a South Indian population-suggests the importance of combined CYP1A1, GSTM1 and GSTT1 polymorphisms in the development of smoking-induced lung cancer.

Indexed as

Polymorphism, GeneticAdultAgedAged, 80 and overCase-Control StudiesCytochrome P-450 CYP1A1DNA Mutational AnalysisFemaleGenetic Predisposition to DiseaseGenotypeGlutathione TransferaseHumansIndiaLung NeoplasmsMaleMiddle AgedCytochrome P-450 CYP1A1glutathione S-transferase T1Glutathione Transferase

Identifiers

PMID16228113
OpenAlexW2034472984

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.