151. Racial disparities in uterine and ovarian carcinosarcoma: A population-based analysis of treatment and survival.
- Author
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Rojas C, Tian C, Powell MA, Chan JK, Bateman NW, Conrads TP, Rocconi RP, Jones NL, Shriver CD, Hamilton CA, Maxwell GL, Casablanca Y, and Darcy KM
- Subjects
- Adult, Age Factors, Aged, Aged, 80 and over, Carcinosarcoma mortality, Carcinosarcoma pathology, Comorbidity, Female, Humans, Middle Aged, Neoplasm Staging, Ovarian Neoplasms mortality, Ovarian Neoplasms pathology, Prognosis, Uterine Neoplasms mortality, Uterine Neoplasms pathology, Black People statistics & numerical data, Carcinosarcoma ethnology, Health Status Disparities, Healthcare Disparities statistics & numerical data, Ovarian Neoplasms ethnology, Uterine Neoplasms ethnology, White People statistics & numerical data
- Abstract
Objective: To investigate racial disparities in uterine carcinosarcoma (UCS) and ovarian carcinosarcoma (OCS) in Commission on Cancer®-accredited facilities., Methods: Non-Hispanic Black (NHB) and non-Hispanic White (NHW) women in the National Cancer Database diagnosed with stage I-IV UCS or OCS between 2004 and 2014 were eligible. Differences by disease site or race were compared using Chi-square test and multivariate Cox analysis., Results: There were 2830 NHBs and 7366 NHWs with UCS, and 280 NHBs and 2586 NHWs with OCS. Diagnosis of UCS was more common in NHBs (11.5%) vs. NHWs (3.7%) and increased with age (P < .0001). OCS diagnosis remained <5% in both races and all ages. NHBs with UCS or OCS were more common in the South and more likely to have a comorbidity score ≥ 1, low neighborhood income and Medicaid or no insurance (P < .0001). Diagnosis at stage II-IV was more common in NHBs than NHWs with UCS but not OCS. NHBs with both UCS and OCS were less likely to undergo surgery and to achieve no gross residual disease with surgery (P = .002). Risk of death in NHB vs. NHW patients with UCS was 1.38 after adjustment for demographic factors and dropped after sequential adjustment for comorbidity score, neighborhood income, insurance status, stage and treatment by 4%, 16%, 7%, 19% and 10%, respectively, leaving 43.5% of the racial disparity in survival unexplained. In contrast, risk of death in NHBs vs. NHWs with OCS was 1.19 after adjustment for demographic factors and became insignificant after adjustment for comorbidity. Race was an independent prognostic factor in UCS but not in OCS., Conclusions: Racial disparities exist in characteristics, treatment and survival in UCS and OCS with distinctions that merit additional research., Competing Interests: Declaration of competing interest Christine Rojas, Chunqiao Tian, Nicholas Bateman, Nathaniel Jones, Craig Shriver, G. Larry Maxwell and Kathleen Darcy have no conflicts of interest to disclose. Matthew Powell reports consulting, honoraria and reimbursement from Tesaro, AstraZeneca, Clovis Oncology, Merck, Abbvie, Jannsen and NRG Oncology/GOG outside the submitted work. John Chan reports consulting, honoraria, reimbursement and is on the Speakers' Bureau for AstraZeneca, Clovis, Tesaro/GSK and Genentech/Roche; honoraria, reimbursement and is on the Speakers' Bureau for Merck; and is consulting for AbbVie, Aceta, Aravive, Biodesix, Eisai, Janssen and Oxigene outside the submitted work. Thomas Conrads reports consulting and a grant from AbbVie outside the submitted work. Rodney Rocconi reports being on the Speakers' Bureau for Genentech and Clovis, and is an expert witness for Johnson & Johnson outside the submitted work. Chad Hamilton reports being on the Speakers' Bureau for Tesaro/GSK and AstraZeneca outside the submitted work. Yovanni Casablanca reports that her spouse is stockholder/shareholder in Celsion Corporation, an oncology company, but this relationship is not associated with this submission., (Copyright © 2020 Elsevier Inc. All rights reserved.)
- Published
- 2020
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