BRM polymorphisms, pancreatic cancer risk and survival
Maja Segedi1,2, Laura N Anderson3, Osvaldo Espin-Garcia2
1Department of Surgery, University of British Columbia, Vancouver, BC, Canada.
Two BRM gene promoter polymorphisms do not affect pancreatic cancer risk but significantly impact patient survival. These findings highlight the role of BRM gene variants in pancreatic cancer prognosis.
Area of Science:
- Genetics
- Cancer Biology
- Epigenetics
Background:
- BRM gene's role in SWI/SNF chromatin remodeling.
- BRM promoter polymorphisms (BRM-741, BRM-1321) create MEF2D binding sites leading to epigenetic silencing.
- Previous associations of BRM polymorphisms with other cancer types.
Purpose of the Study:
- To investigate the association of BRM promoter polymorphisms with pancreatic adenocarcinoma risk.
- To assess the impact of these polymorphisms on pancreatic cancer survival.
Main Methods:
- Population-based case-control study (623 cases, 1192 controls).
- Logistic and Cox proportional hazard regression models used for analysis.
- Adjusted for relevant covariates including age, gender, and stage.
Main Results:
- No significant association found between BRM polymorphisms and pancreatic cancer risk.
- Strong association observed between BRM variant alleles and reduced survival.
- Increased hazard ratios for mortality observed with increasing number of variant alleles.
Conclusions:
- BRM promoter polymorphisms are not risk factors for pancreatic adenocarcinoma.
- These polymorphisms are significantly associated with poorer survival in pancreatic cancer patients.
- BRM gene variants may serve as prognostic markers for pancreatic cancer.
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