Document Detail

Influence of germline polymorphisms of GSTT1, GSTM1, and GSTP1 in familial versus sporadic breast cancer susceptibility and survival.
MedLine Citation:
PMID:  18080216     Owner:  NLM     Status:  MEDLINE    
Identifying genes associated with familial inheritance of breast cancer continues to be a major goal of current research as the known high penetrance genes could be attributable for only a small percentage of the risk. So, it is hypothesized that the low penetrance genes may also modify the risk for familial breast cancer. In the present case-control study, undertaken to examine the influence of polymorphisms of GSTs in familial and sporadic breast cancer susceptibility, 597 women including 222 sporadic breast cancer patients, 125 familial breast cancer patients and 250 females with no history of cancer as controls were genotyped by PCR based methods. Odds Ratios (ORs) and 95% Confidence Intervals (95%CIs) were calculated by unconditional logistic regression adjusted to age. Interestingly, GSTM1 deletion was found to be significantly associated only with familial breast cancer (OR = 2.0; 95%CI = 1.252-3.128) while GSTT1 was associated only with sporadic breast cancer (OR = 2.3; 95%CI = 1.336-3.970). GSTP1 Ile105Val polymorphism was associated neither with sporadic nor familial breast cancer susceptibility (P value > 0.05). The GST genotypes did not have any effect on the survival of both familial and sporadic breast cancer patients. However, familial breast cancer patients with GSTM1 null genotype had a relative risk of 0.42 (95%CI = 0.18-0.97) for an advanced disease stage. The results indicate that, in addition to the known high penetrance genes, certain low penetrance genes may also play a role, in the familial inheritance of breast cancer. It is also noticed that all the polymorphisms associated with sporadic breast cancer are not associated with familial breast cancer.
Volga S Syamala; Leelakumari Sreeja; Vani Syamala; Praveenkumar B Raveendran; Rajan Balakrishnan; Ratheesan Kuttan; Ravindran Ankathil
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Publication Detail:
Type:  Journal Article     Date:  2007-12-14
Journal Detail:
Title:  Familial cancer     Volume:  7     ISSN:  1389-9600     ISO Abbreviation:  Fam. Cancer     Publication Date:  2008  
Date Detail:
Created Date:  2008-07-28     Completed Date:  2009-01-16     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  100898211     Medline TA:  Fam Cancer     Country:  Netherlands    
Other Details:
Languages:  eng     Pagination:  213-20     Citation Subset:  IM    
Division of Cancer Research, Regional Cancer Centre, Trivandrum , 695011, Kerala, India.
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MeSH Terms
Breast Neoplasms / epidemiology*,  genetics*,  mortality
Case-Control Studies
Confidence Intervals
Disease Susceptibility
Gene Deletion
Genetic Predisposition to Disease
Glutathione S-Transferase pi / genetics*
Glutathione Transferase / genetics*
India / epidemiology
Middle Aged
Odds Ratio
Polymorphism, Genetic*
Risk Factors
Reg. No./Substance:
EC 2.5.1.-/glutathione S-transferase T1; EC protein, human; EC S-Transferase pi; EC Transferase; EC S-transferase M1

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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