Abstract
Purpose
Although the incidence rate of epithelial ovarian cancer (EOC) is somewhat lower in African American (AA) than white women, survival is worse. The Ovarian Cancer in Women of African Ancestry (OCWAA) consortium will overcome small, study-specific sample sizes to better understand racial differences in EOC risk and outcomes.
Methods
We harmonized risk factors and prognostic characteristics from eight U.S. studies: the North Carolina Ovarian Cancer Study (NCOCS), the Los Angeles County Ovarian Cancer Study (LACOCS), the African American Cancer Epidemiology Study (AACES), the Cook County Case–Control Study (CCCCS), the Black Women’s Health Study (BWHS), the Women’s Health Initiative (WHI), the Multiethnic Cohort Study (MEC), and the Southern Community Cohort Study (SCCS).
Results
Determinants of disparities for risk and survival in 1,146 AA EOC cases and 2,922 AA controls will be compared to 3,368 white EOC cases and 10,270 white controls. Analyses include estimation of population-attributable risk percent (PAR%) by race.
Conclusion
OCWAA is uniquely positioned to study the epidemiology of EOC in AA women compared with white women to address disparities. Studies of EOC have been underpowered to address factors that may explain AA-white differences in the incidence and survival. OCWAA promises to provide novel insight into disparities in ovarian cancer.
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Acknowledgments
The authors thank the WHI investigators and staff for their dedication and the study participants for making the program possible. A full listing of WHI investigators can be found at: http://www.whi.org/researchers/Documents%20%20Write%20a%20Paper/WHI%20Investigator%20Long%20List.pdf. The authors would also like to thank Alpana Kaushiva for harmonizing the data from the Cook County Case–Control Study. Additionally, the authors sincerely thank the state cancer registries that contributed to the OCWAA studies: Arizona, Arkansas, California, Colorado, Connecticut, Delaware, District of Columbia, Florida, Georgia, Hawaii, Illinois, Indiana, Kentucky, Louisiana, Maryland, Massachusetts, Michigan, Mississippi, New Jersey, New York, North Carolina, Oklahoma, Pennsylvania, South Carolina, Tennessee, Texas, Virginia, and West Virginia.
Funding
This project is supported by grant R01-CA207260 (L.A. Rosenberg, J.M. Schildkraut) from the National Cancer Institute (NCI), National Institutes of Health (NIH), U.S. Department of Health and Human Services. In addition, AACES was funded by NCI (R01-CA142081; J.M. Schildkraut); BWHS is funded by NIH (R01-CA058420 and UM1CA164974); CCCCS was funded by NIH/NCI (R01-CA61093; K.A. Rosenblatt); LACOCS was funded by NCI (R01-CA17054 [Pike], R01-CA58598 [Goodman, A. Wu] and Cancer Center Core Grant P30-CA014089 [Henderson, A. Wu]) and the California Cancer Research Program (2II0200 [A. Wu]); and NCOCS was funded by NCI (R01-CA076016; J.M. Schildkraut). SCCS is supported by the NCI (Grants R01-CA092447 and U01-CA202979; W.J. Blot and W. Zheng), and data collection is performed by the Survey and Biospecimen Shared Resource, which is supported by the Vanderbilt-Ingram Cancer Center (P30-CA68485). In addition, support to bring SCCS to OCWAA was provided by a Pilot Award (PI: Beeghly-Fadiel) from the NIH Precision Medicine and Health Disparities Collaborative (NIMHD/NHGRI U54-MD010722). The WHI program is funded by the National Heart, Lung, and Blood Institute, NIH through contracts HHSN268201600018C, HHSN268201600001C, HHSN268201600002C, HHSN268201600003C, and HHSN268201600004C. Additionally, WHI, “The women’s health Initiative Cancer Survivor Cohort,” is funded by NCI (5UM1CA173642-05; G.L. Anderson).
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Patricia Moorman has received compensation for work related to litigation in regard to talc and ovarian cancer.
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Schildkraut, J.M., Peres, L.C., Bethea, T.N. et al. Ovarian Cancer in Women of African Ancestry (OCWAA) consortium: a resource of harmonized data from eight epidemiologic studies of African American and white women. Cancer Causes Control 30, 967–978 (2019). https://doi.org/10.1007/s10552-019-01199-7
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DOI: https://doi.org/10.1007/s10552-019-01199-7