Document Detail


Cyclin E overexpression in epithelial ovarian cancer characterizes an etiologic subgroup.
MedLine Citation:
PMID:  18349276     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
BACKGROUND: The objective of this study was to determine whether cyclin E overexpression defines an etiologically distinct subgroup of ovarian cancer. METHODS: We analyzed data from 538 epithelial ovarian cancer cases and 629 controls enrolled in a population-based case-control study. Cyclin E protein overexpression was assessed using immunohistochemistry. Case-control and case-case comparisons were done to evaluate the relationship between cyclin E overexpression and epidemiologic risk factors. Logistic regression models were used to estimate odds ratios (OR) and 95% confidence intervals (95% CI) while adjusting for potential confounders. RESULTS: Case-control comparisons showed ovarian cancers with and without cyclin E overexpression have different associations with several epidemiologic risk factors. A dose-response relationship was observed between lifetime ovulatory cycles (LOC) and ovarian cancer that overexpressed cyclin E [OR, 1.8; 95% CI, 1.1-3.0 for moderately high LOC (265-390 cycles) and OR, 2.7; 95% CI, 1.6-4.5 for high LOC (>390 cycles) compared with low LOC (<265 cycles)], but no relationship was seen with cancers that lacked overexpression. The most important components of the LOC variable contributing to the differences in the association with the cyclin E subgroups of ovarian cancer were months of oral contraceptive use and months pregnant. CONCLUSIONS: Cyclin E overexpression is associated with a high number of LOC, largely influenced by oral contraceptive use and pregnancy. This suggests that cyclin E overexpression is a molecular signature characteristic of ovarian cancer cases that may arise via a pathway that involves ovulation-induced alterations.
Authors:
Joellen M Schildkraut; Patricia G Moorman; Amy E Bland; Susan Halabi; Brian Calingaert; Regina Whitaker; Paula S Lee; Tyler Elkins-Williams; Rex C Bentley; Jeffrey R Marks; Andrew Berchuck
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Publication Detail:
Type:  Journal Article; Research Support, N.I.H., Extramural; Research Support, U.S. Gov't, Non-P.H.S.    
Journal Detail:
Title:  Cancer epidemiology, biomarkers & prevention : a publication of the American Association for Cancer Research, cosponsored by the American Society of Preventive Oncology     Volume:  17     ISSN:  1055-9965     ISO Abbreviation:  Cancer Epidemiol. Biomarkers Prev.     Publication Date:  2008 Mar 
Date Detail:
Created Date:  2008-03-19     Completed Date:  2008-06-17     Revised Date:  2008-11-25    
Medline Journal Info:
Nlm Unique ID:  9200608     Medline TA:  Cancer Epidemiol Biomarkers Prev     Country:  United States    
Other Details:
Languages:  eng     Pagination:  585-93     Citation Subset:  IM    
Affiliation:
Department of Community and Family Medicine, Duke University Medical Center, Box 2949, Durham, NC 27710, USA. schil001@mc.duke.edu
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MeSH Terms
Descriptor/Qualifier:
Adult
Case-Control Studies
Chi-Square Distribution
Cyclin E / metabolism*
Female
Humans
Immunohistochemistry
Middle Aged
Neoplasm Staging
North Carolina / epidemiology
Ovarian Neoplasms / epidemiology,  metabolism*,  pathology
Questionnaires
Registries
Risk Factors
Grant Support
ID/Acronym/Agency:
1-R01-CA76016/CA/NCI NIH HHS
Chemical
Reg. No./Substance:
0/Cyclin E
Comments/Corrections
Comment In:
Cancer Epidemiol Biomarkers Prev. 2008 Jul;17(7):1841; author reply 1841-2   [PMID:  18628442 ]

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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