Abstract
Background
An association was observed between an inflammation-related risk score (IRRS) and worse overall survival (OS) among a cohort of mostly White women with invasive epithelial ovarian cancer (EOC). Herein, we evaluated the association between the IRRS and OS among Black women with EOC, a population with higher frequencies of pro-inflammatory exposures and worse survival.
Methods
The analysis included 592 Black women diagnosed with EOC from the African American Cancer Epidemiology Study (AACES). Cox proportional hazards models were used to compute hazard ratios (HRs) and 95% confidence intervals (CIs) for the association of the IRRS and OS, adjusting for relevant covariates. Additional inflammation-related exposures, including the energy-adjusted Dietary Inflammatory Index (E-DIITM), were evaluated.
Results
A dose–response trend was observed showing higher IRRS was associated with worse OS (per quartile HR: 1.11, 95% CI: 1.01–1.22). Adding the E-DII to the model attenuated the association of IRRS with OS, and increasing E-DII, indicating a more pro-inflammatory diet, was associated with shorter OS (per quartile HR: 1.12, 95% CI: 1.02–1.24). Scoring high on both indices was associated with shorter OS (HR: 1.54, 95% CI: 1.16–2.06).
Conclusion
Higher levels of inflammation-related exposures were associated with decreased EOC OS among Black women.
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Data availability
The datasets generated and/or analysed during the current study are available on reasonable request, in accordance with the NIH data sharing policy.
Code availability
All analyses were performed using R (version 4.2.0), and the code is available on reasonable request.
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Acknowledgements
We would like to acknowledge the AACES interviewers Brandy Arredondo, Rachel Boehm, Dannelle Charles, Melody Chavez, Lauren Dempsey, Kierstin Faw, Juliana Fucinari, Mary Kan, Mary Beth Kolbicz, Arianna Mason, Juana Paniagua, and Maelia Pendley. We also acknowledge the individuals responsible for facilitating case ascertainment across the sites, including Kevin Ward and Mackenzie Crawford (Georgia); Tingting Li and Lauren Maniscalco (Louisiana); Dhanya Chanumolu and Myneka Macenat (New Jersey); Paul Terry (Tennessee); Ann Hamilton (California), Mary Beth Kolbicz (Michigan); Cynthia Webb, JoElla Marting, and Heather Tipaldos (North Carolina); and Maxwell Akonde, Stephanie Chiodini, and Deb Hurley (South Carolina).
Funding
The AACES study was funded by the National Cancer Institute (R01CA142081 and R01CA237318). Additional support was provided by Metropolitan Detroit Cancer Surveillance System (MDCSS) with federal funds from the National Cancer Institute, National Institute of Health, Dept. of Health and Human Services, under Contract No. HHSN261201000028C and the Epidemiology Research Core, supported in part by NCI Center Grant (P30CA22453) to the Karmanos Cancer Institute, Wayne State University School of Medicine. This work has been supported in part by the Participant Research, Interventions, and Measurements Core Facility at the H. Lee Moffit Cancer Center & Research Institute, an NCI designated Comprehensive Cancer Center (P30-CA076292). LJC was supported by K99CA277580 from the National Cancer Institute of the National Institutes of Health.
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The following authors were a part of the writing group: CEJ, JMS, AJA, EVB, PT, ESP, BQ, HBM, MLC, MA, TAH, and LJC. The analysis was completed by: CEJ. The following authors provided comments and edits to the manuscript: LVP, AGS, ABL, and JRH. The following authors helped in data collection: JMSchildkraut, AJA, EVB, PT, MA, ESP, MLC, JRM, MB, AGS, and HBM. JRH developed the energy-adjusted dietary inflammatory index.
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This study was approved by the Western Institutional Review Board-Copernicus Group (WCG IRB). The study was performed in accordance with the Declaration of Helsinki. Informed consent was obtained from all individual participants included in the study.
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Johnson, C.E., Alberg, A.J., Bandera, E.V. et al. Association of inflammation-related exposures and ovarian cancer survival in a multi-site cohort study of Black women. Br J Cancer 129, 1119–1125 (2023). https://doi.org/10.1038/s41416-023-02385-w
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DOI: https://doi.org/10.1038/s41416-023-02385-w