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  • 1
    Keywords: CANCER ; SURVIVAL ; RISK ; FAMILY ; ASSOCIATION ; SUSCEPTIBILITY ; BREAST-CANCER ; MUTATIONS ; MUTATION CARRIERS ; susceptibility loci ; GENOME-WIDE ASSOCIATION ; CONSORTIUM
    Abstract: Purpose: An assay for the single-nucleotide polymorphism (SNP), rs61764370, has recently been commercially marketed as a clinical test to aid ovarian cancer risk evaluation in women with family histories of the disease. rs67164370 is in a 3'-UTR miRNA binding site of the KRAS oncogene and is a candidate for epithelial ovarian cancer (EOC) susceptibility. However, only one published article, analyzing fewer than 1,000 subjects in total, has examined this association. Experimental Design: Risk association was evaluated in 8,669 cases of invasive EOC and 10,012 controls from 19 studies participating in the Ovarian Cancer Association Consortium, and in 683 cases and 2,044 controls carrying BRCA1 mutations from studies in the Consortium of Investigators of Modifiers of BRCA1/2. Prognosis association was also examined in a subset of five studies with progression-free survival (PFS) data and 18 studies with all-cause mortality data. Results: No evidence of association was observed between genotype and risk of unselected EOC (OR = 1.02, 95% CI: 0.95-1.10), serous EOC (OR = 1.08, 95% CI: 0.98-1.18), familial EOC (OR = 1.09, 95% CI: 0.78-1.54), or among women carrying deleterious mutations in BRCA1 (OR = 1.09, 95% CI: 0.88-1.36). There was little evidence for association with survival time among unselected cases (HR = 1.10, 95% CI: 0.99-1.22), among serous cases (HR = 1.12, 95% CI = 0.99-1.28), or with PFS in 540 cases treated with carboplatin and paclitaxel (HR = 1.18, 95% CI: 0.93-1.52). Conclusions: These data exclude the possibility of an association between rs61764370 and a clinically significant risk of ovarian cancer or of familial ovarian cancer. Use of this SNP for ovarian cancer clinical risk prediction, therefore, seems unwarranted.
    Type of Publication: Journal article published
    PubMed ID: 21385923
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  • 2
    Keywords: carcinoma ; GENES ; SUSCEPTIBILITY ; WOMEN ; PATHOGENESIS ; inflammation ; infertility ; ORIGIN ; HOSPITAL DISCHARGE DIAGNOSIS ; FERTILITY DRUGS
    Abstract: BACKGROUND: Endometriosis is a risk factor for epithelial ovarian cancer; however, whether this risk extends to all invasive histological subtypes or borderline tumours is not clear. We undertook an international collaborative study to assess the association between endometriosis and histological subtypes of ovarian cancer. METHODS: Data from 13 ovarian cancer case-control studies, which were part of the Ovarian Cancer Association Consortium, were pooled and logistic regression analyses were undertaken to assess the association between self-reported endometriosis and risk of ovarian cancer. Analyses of invasive cases were done with respect to histological subtypes, grade, and stage, and analyses of borderline tumours by histological subtype. Age, ethnic origin, study site, parity, and duration of oral contraceptive use were included in all analytical models. FINDINGS: 13 226 controls and 7911 women with invasive ovarian cancer were included in this analysis. 818 and 738, respectively, reported a history of endometriosis. 1907 women with borderline ovarian cancer were also included in the analysis, and 168 of these reported a history of endometriosis. Self-reported endometriosis was associated with a significantly increased risk of clear-cell (136 [20.2%] of 674 cases vs 818 [6.2%] of 13 226 controls, odds ratio 3.05, 95% CI 2.43-3.84, p〈0.0001), low-grade serous (31 [9.2%] of 336 cases, 2.11, 1.39-3.20, p〈0.0001), and endometrioid invasive ovarian cancers (169 [13.9%] of 1220 cases, 2.04, 1.67-2.48, p〈0.0001). No association was noted between endometriosis and risk of mucinous (31 [6.0%] of 516 cases, 1.02, 0.69-1.50, p=0.93) or high-grade serous invasive ovarian cancer (261 [7.1%] of 3659 cases, 1.13, 0.97-1.32, p=0.13), or borderline tumours of either subtype (serous 103 [9.0%] of 1140 cases, 1.20, 0.95-1.52, p=0.12, and mucinous 65 [8.5%] of 767 cases, 1.12, 0.84-1.48, p=0.45). INTERPRETATION: Clinicians should be aware of the increased risk of specific subtypes of ovarian cancer in women with endometriosis. Future efforts should focus on understanding the mechanisms that might lead to malignant transformation of endometriosis so as to help identify subsets of women at increased risk of ovarian cancer. FUNDING: Ovarian Cancer Research Fund, National Institutes of Health, California Cancer Research Program, California Department of Health Services, Lon V Smith Foundation, European Community's Seventh Framework Programme, German Federal Ministry of Education and Research of Germany, Programme of Clinical Biomedical Research, German Cancer Research Centre, Eve Appeal, Oak Foundation, UK National Institute of Health Research, National Health and Medical Research Council of Australia, US Army Medical Research and Materiel Command, Cancer Council Tasmania, Cancer Foundation of Western Australia, Mermaid 1, Danish Cancer Society, and Roswell Park Alliance Foundation.
    Type of Publication: Journal article published
    PubMed ID: 22361336
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