Prostate cancer in transgender women: A propensity score-matched analysis of disease severity and survival.

ABSTRACT

BACKGROUND: Despite the rise in gender-affirming care, our understanding of prostate cancer (PCa) in transgender women (TGW) remains in its infancy. Health disparities and lack of PCa awareness and screening are possible barriers to providing quality care for this population. In addition, the implication of hormonal manipulation for the aggressiveness of PCa in TGW is yet to be determined. Here, this study sought to compare oncological characteristics and survival outcomes between transgender and cisgender (CG) patients with PCa via two national data sets. METHODS: The Veterans Affairs Informatics and Computing Infrastructure database (1999-2020) and the Surveillance, Epidemiology, and End Results-Medicare database (2010-2017) were reviewed. Demographic and clinical details were analyzed. Logistic regression analysis was performed on propensity score-matched groups to identify predictors of high-risk disease and metastasis in patients with PCa. Groups were matched 51 (CGTGW) on the basis of age, race, year of diagnosis, and Charlson Comorbidity Index score. Primary outcomes included metastatic presentation, high-risk localized disease, overall survival (OS), and prostate cancer-specific mortality (PCSM). RESULTS: A total of 1194 patients were included (199 TGW; 995 CG). Associations between transgender identity and metastatic presentation (odds ratio [OR], 0.38; p = .2), high-risk localized disease (OR, 1.19; p = .50), or PCSM (hazard ratio [HR], 0.65; p = .3) were not detected. Transgender identity was associated with improved OS (HR, 0.67; p = .014). CONCLUSIONS: PCa-specific outcomes seem comparable between TGW and CG men, although the study was underpowered to detect modest differences. Further investigation into the incidence and outcomes of PCa in TGW is warranted.