The association of black race with receipt of hysterectomy and survival in low-risk endometrial cancer.

OBJECTIVE: To determine whether Black race is associated with treatment and survival among women with low-risk endometrial cancer. METHODS: Black and White women with Stage IA grade 1-2 endometrioid endometrial carcinoma diagnosed from 2010 to 2016 in the SEER 18 dataset were identified (n = 23,431), and clinical and socioeconomic attributes obtained. Five-year cancer-specific survival (CSS) and relative survival (RS) were calculated using SEER*Stat 8.3.9. Cox proportional hazards model was used to determine predictors of overall survival (OS) and CSS. RESULTS: There was a significantly higher proportion of Black women who did not have surgery compared to White women (3% vs 1%, respectively; p < 0.0001). Residing in the South, being insured with Medicaid, and residing in a county with low median income were also associated with non-receipt of surgery. Black women remained less likely to undergo hysterectomy on multivariable analysis (OR 0.44, 95% CI 0.32-0.60). Non-receipt of hysterectomy was predictive of decreased CSS (HR 0.14, 95% CI 0.09-0.21) and OS (HR 0.18, 95% 0.14-0.23) on adjusted analysis. Black race was also an independent predictor of increased cancer-specific death (HR 2.07, 95% CI 1.50-2.86) as well as death from any cause (HR 1.74, 95% CI 1.44-2.09) on adjusted analysis. CONCLUSIONS: Black women with low-risk endometrial cancer were less likely to undergo hysterectomy and experienced decreased survival relative to White women. Further investigation is warranted to better understand the socioeconomic, geographic, and biologic factors that influence this disparity.

Evaluation of patterns of progression on poly (ADP-ribose) polymerase inhibitor (PARPi) maintenance in ovarian cancer: a cross-sectional study.

INTRODUCTION: Despite improvement in progression-free survival with poly (ADP-ribose) polymerase inhibitors (PARPi) as maintenance therapy for ovarian cancer, many patients will eventually progress on therapy. Oligoprogression is uniquely suited to considerations of local consolidation therapy in this setting, but not commonly used in ovarian cancer. In this study we evaluated the proportion of patients on PARPi maintenance who developed limited sites of disease, the location of progression, and their natural history. METHODS: From January 2006 to December 2020, natural language processing software (DEEP6AI) was used to identify 58 patients with ovarian cancer treated with PARPi maintenance after complete or partial response after surgery and platinum-based chemotherapy at our institution. Patients were assessed for presence and location of recurrence based on radiologic findings. RESULTS: The median patient age was 65 (IQR 57-71) years. Patients had a median of two lines of chemotherapy prior to starting PARPi. With a median follow-up of 48 (range 12-149) months, 32 (55%) patients had a recurrence on maintenance olaparib and 11 (34%) patients developed oligoprogression (≤3 sites). For the 11 patients with oligoprogression, three patients developed recurrence in one site, five in two sites, and three in three sites. The sites of oligoprogression were pelvic/periaortic nodal (27%), peritoneal (27%), liver (27%), lung/mediastinal (14%), and brain (5%). The median progression-free survival for the entire cohort was 6.0 months (95% CI 4.2 to 7.8); median overall survival was not met. There were no significant differences in overall survival (p=0.81) or progression-free survival (p=0.95) between patients with and without oligoprogression. CONCLUSIONS: One-third of patients on PARPi maintenance experienced oligoprogression defined as limited to ≤3 sites. These patients may benefit from local consolidation therapy. A larger dataset is needed to validate these findings to assess if trials investigating local therapy for these patients is of value.