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BRCA1-associated breast and ovarian cancer risks in Poland: no association with commonly studied polymorphisms.

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TLDR
It appears that polymorphisms involved in DNA repair, steroid hormone biosynthesis/metabolism/signaling, folate metabolism as well as cell growth do not influence disease risk in Polish women carrying one of the three common BRCA1 founder mutations.
Abstract
Polymorphisms in genes involved in DNA repair, steroid hormone biosynthesis/metabolism/signaling, folate metabolism as well as cell growth are prime candidates for possible associations with breast and ovarian cancer risk in women with an inherited predisposition. We investigated 29 polymorphisms in 20 genes encoding key proteins of the above four biological pathways for their breast and ovarian cancer risk modifying effect in Polish women harboring BRCA1 founder mutations. Of the analyzed genes, ERCC2, XRCC1, XRCC2, XRCC3 and Lig4 participate in DNA repair, TP53 in cell cycle check point control, AIB1, AR, COMT, CYP11A1, CYP17A1, CYP19A1, HSD17 and PGR in steroid hormone biosynthesis/metabolism/signaling, TYMS in folate metabolism and HER2, IL6, LRP1, TGFB and TGFBR1 affect cell growth. Using validated methods, we genotyped 319 breast cancer cases, 146 ovarian cancer cases and 290 unaffected controls, all of whom harbored one of three causative mutations in BRCA1. Our results revealed no association of any of the investigated polymorphisms with BRCA1-associated breast or ovarian cancer risk. Thus, it appears that these polymorphisms do not influence disease risk in Polish women carrying one of the three common BRCA1 founder mutations.

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Lipoprotein receptors-an evolutionarily ancient multifunctional receptor family

TL;DR: Experimental evidence has replaced the perception that these receptors serve merely as cargo transporters and it is now clear that the transport of macromolecules is inseparably intertwined with the molecular machinery by which cells communicate with each other.
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TGFBR1*6A/9A polymorphism and cancer risk: a meta-analysis of 13,662 cases and 14,147 controls.

TL;DR: It is suggested that the TGFBR1*6A/9A polymorphism is associated with cancer susceptibility, increasing the risk of breast and ovarian cancer.
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Meta-analysis of two ERCC2 (XPD) polymorphisms, Asp312Asn and Lys751Gln, in breast cancer

TL;DR: The authors conducted a meta-analysis based on 40 studies from 33 publications in PubMed which included analyses of Lys751Gln (14,545 cases, 15,352 controls) and Asp312Asn polymorphisms (16,254 cases, 14,006 controls).
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Association of COMT Val158Met polymorphism and breast cancer risk: an updated meta-analysis

TL;DR: A large meta-analysis of 56 studies involving 34,358 breast cancer cases and 45,429 controls suggests that the COMT Val158Met polymorphism may not contribute to breast cancer susceptibility.
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Life stage differences in mammary gland gene expression profile in non-human primates

TL;DR: Several of the pathways activated during pubertal development have been implicated in cancer development and metastasis, supporting the idea that other developmental markers may have application as biomarkers for BC.
References
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Journal ArticleDOI

Meta-Analysis: A Constantly Evolving Research Integration Tool

TL;DR: The four articles in this special section onMeta-analysis illustrate some of the complexities entailed in meta-analysis methods and contributes both to advancing this methodology and to the increasing complexities that can befuddle researchers.
Journal Article

Polymorphisms in DNA repair genes and associations with cancer risk.

TL;DR: It is concluded that large, well-designed studies of common polymorphisms in DNA repair genes are needed and such studies may benefit from analysis of multiple genes or polymorphisms and from the consideration of relevant exposures that may influence the likelihood of cancer in the presence of reduced DNA repair capacity.
Journal ArticleDOI

On the exact distribution of maximally selected rank statistics

TL;DR: The computation of the exact distribution of a maximally selected rank statistic is discussed and a new lower bound of the distribution is derived based on an extension of an algorithm for the exactribution of a linear rank statistic.
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