Diet and Ovarian Cancer Survival in Black Women

TOPLINE:

Better pre-diagnosis dietary quality is linked to improved survival in Black women with high-grade serous ovarian cancer (HGSOC). No significant survival association was found among the full study sample, which included women with multiple types of epithelial ovarian cancer (EOC).

METHODOLOGY:

• Researchers conducted a prospective cohort study among 483 self-identified Black women aged 20-79 years newly diagnosed with histologically confirmed EOC between December 2010 and December 2015.
• The study aimed to examine associations between dietary patterns and survival among Black women diagnosed with EOC using data from the African American Cancer Epidemiology Study.
• Dietary patterns were assessed using the Healthy Eating Index-2020 (HEI-2020) and Alternative Healthy Eating Index-2010 (AHEI-2010), based on dietary intake in the year prior to diagnosis collected via the validated Block 2005 Food Frequency Questionnaire (FFQ). Participant characteristics were summarized across quartiles of HEI-2020 and AHEI-2010 scores.
• The researchers obtained and summarized clinical characteristics, including tumor characteristics, first-line treatment regimen, debulking status, residual disease, and cancer antigen 125 levels, from medical records.
• The main outcome measure was overall survival, with hazard ratios (HRs) and 95% CIs estimated from multivariable Cox models for the association between adherence to dietary recommendations and overall mortality. Follow-up was conducted until October 2022, with data analyzed from March 2023 to June 2024.

TAKEAWAY:

• No significant association was found between dietary patterns and overall mortality among women with EOC.
• Among women with HGSOC, the most lethal histotype of EOC, better adherence to the HEI-2020 was associated with decreased mortality in later quartiles vs the first quartile (HR, 0.63; 95% CI, 0.44-0.92).
• Similar results were observed with the AHEI-2010 among women with HGSOC for the second (HR, 0.62; 95% CI, 0.43-0.89) and fourth (HR, 0.67; 95% CI, 0.45-0.98) quartiles vs the first quartile.
• Women with moderate and high pre-diagnosis dietary quality had significantly lower mortality rates from HGSOC than those with the lowest pre-diagnosis dietary quality.

IN PRACTICE:

“Our findings suggest that prediagnosis dietary patterns (ie, the combination of foods and nutrients) are more important than individual components for ovarian cancer survival as shown by comparing results of dietary patterns with individual components,” the authors of the study wrote.

SOURCE:

This study was led by Tsion A. Armidie, MPH, Rollins School of Public Health, Emory University in Atlanta. It was published online on October 18 in JAMA Network Open.

LIMITATIONS:

This study’s limitations included the potential for residual confounding, despite accounting for a wide array of covariates. The median time between diagnosis and FFQ completion was 5.8 months, which may have introduced measurement errors in dietary recall. Additionally, the study did not collect post-diagnostic dietary information, which could have provided further insights into the association between diet and survival.

DISCLOSURES:

This study was supported by grants from the National Cancer Institute. Elisa V. Bandera, MD, PhD, reported receiving personal fees from Pfizer outside the submitted work. Lauren C. Peres, PhD, MPH, reported receiving grants from the US Department of Defense during the conduct of the study and Bristol Myers Squibb and Karyopharm outside the submitted work. Michele L. Cote, PhD, reported receiving personal fees from Ashcraft and Gerel outside the submitted work. Lindsay J. Collin, PhD, reported receiving personal fees from Epidemiologic Research & Methods, LLC, outside the submitted work. Additional disclosures are noted in the original article.

This article was created using several editorial tools, including AI, as part of the process. Human editors reviewed this content before publication.