Mitochondrial DNA G10398A variant is not associated with breast cancer in African-American women

Abstract Mitochondria play important roles in cellular energy production, free radical generation, and apoptosis. In a previous report, the mitochondrial DNA (mtDNA) G10398A (Thr→Ala) polymorphism was associated with breast cancer risk in African-American women [Cancer Res 2005;65:8028–33]. We sough...

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Published in:Cancer genetics and cytogenetics 2008-02, Vol.181 (1), p.16-19
Main Authors: Setiawan, Veronica Wendy, Chu, Li-Hao, John, Esther M, Ding, Yuan Chun, Ingles, Sue A, Bernstein, Leslie, Press, Michael F, Ursin, Giske, Haiman, Christopher A, Neuhausen, Susan L
Format: Article
Language:English
Subjects:
Black or African American
Black People - genetics
Breast Neoplasms - genetics
Case-Control Studies
DNA, Mitochondrial - genetics
Female
Gene Frequency
Genetic Variation
Hematology, Oncology and Palliative Medicine
Humans
Los Angeles
Medical Education
Polymorphism, Single Nucleotide
Reference Values
Sample Size
San Francisco
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Summary:Abstract Mitochondria play important roles in cellular energy production, free radical generation, and apoptosis. In a previous report, the mitochondrial DNA (mtDNA) G10398A (Thr→Ala) polymorphism was associated with breast cancer risk in African-American women [Cancer Res 2005;65:8028–33]. We sought to replicate the association by genotyping the G10398A polymorphism in multiple established population-based case-control studies of breast cancer in African-American women. The 10398A allele was not significantly associated with risk in any of the studies: San Francisco (542 cases, 282 controls, odds ratio OR = 1.73, 95% confidence interval CI = 0.87–3.47, P = 0.12); Multiethnic Cohort (391 cases, 460 controls, OR = 1.08, 95% CI = 0.62–1.86, P = 0.79); and CARE and LIFE (524 cases, 236 controls, OR = 0.81, 95% CI = 0.43–1.52, P = 0.50). With data pooled across the studies (1,456 cases and 978 controls), no significant association was observed with the 10398A allele (OR = 1.14, 95% CI = 0.80–1.62, P = 0.47, test for heterogeneity = 0.30). In analysis of advanced breast cancer cases ( n = 674), there was also no significant association (OR = 1.18, 95% CI = 0.76–1.82, P  = 0.46). Our results do not support the hypothesis that the mtDNA G10398A polymorphism is, as has previously been reported, a marker of breast cancer risk in African Americans.
ISSN:0165-4608
1873-4456
DOI:10.1016/j.cancergencyto.2007.10.019