Screening of HELQ in breast and ovarian cancer families

Show full item record



Permalink

http://hdl.handle.net/10138/223861

Citation

Pelttari , L M , Kinnunen , L , Kiiski , J I , Khan , S , Blomqvist , C , Aittomaki , K & Nevanlinna , H 2016 , ' Screening of HELQ in breast and ovarian cancer families ' , Familial Cancer , vol. 15 , no. 1 , pp. 19-23 . https://doi.org/10.1007/s10689-015-9838-4

Title: Screening of HELQ in breast and ovarian cancer families
Author: Pelttari, Liisa M.; Kinnunen, Laura; Kiiski, Johanna I.; Khan, Sofia; Blomqvist, Carl; Aittomaki, Kristiina; Nevanlinna, Heli
Contributor: University of Helsinki, Department of Obstetrics and Gynecology
University of Helsinki, Clinicum
University of Helsinki, Clinicum
University of Helsinki, Department of Obstetrics and Gynecology
University of Helsinki, Clinicum
University of Helsinki, Medicum
University of Helsinki, Department of Obstetrics and Gynecology
Date: 2016-01
Language: eng
Number of pages: 5
Belongs to series: Familial Cancer
ISSN: 1389-9600
URI: http://hdl.handle.net/10138/223861
Abstract: Several high and moderate risk alleles have been identified for breast and ovarian cancer predisposition and most of them encode proteins that function in DNA repair. A prospective candidate for breast and ovarian cancer susceptibility is the HELQ helicase that has a role in the resolution of DNA interstrand cross-links. HELQ interacts with the RAD51 paralog complex BCDX2. Two components of the complex, RAD51C and RAD51D, increase the risk of ovarian cancer especially, and the other two, RAD51B and XRCC2 have been associated with breast cancer risk. To investigate the role of HELQ in cancer predisposition, we screened the gene for germline variation in 185 Finnish breast or ovarian cancer families and performed haplotype analyses for 1517 breast cancer cases, 308 ovarian cancer cases, and 1234 population controls using five common polymorphisms at the HELQ gene locus. No truncating mutations were identified among the families. One putatively pathogenic missense mutation c.1309A > G was identified but no additional carriers were observed in the subsequent genotyping of 332 familial breast or ovarian cancer patients. Furthermore, the haplotype distribution did not differ between breast or ovarian cancer cases and population controls. Our results indicate that HELQ is not a major breast and ovarian cancer susceptibility gene in the Finnish population. However, we cannot rule out rare risk-variants in the Finnish or other populations and larger datasets are needed to further assess the role of HELQ especially in ovarian cancer predisposition.
Subject: HELQ
Breast cancer
Ovarian cancer
DNA repair
BRCA2 MUTATIONS
SUSCEPTIBILITY GENE
RAD51 PARALOGS
REPAIR
TUMORIGENESIS
RISK
LOCI
3122 Cancers
Rights:


Files in this item

Total number of downloads: Loading...

Files Size Format View
Screening_of_HELQ.pdf 354.5Kb PDF View/Open

This item appears in the following Collection(s)

Show full item record