Abstract
Renal cell carcinoma (RCC) is amongst the ten most prevalent malignancies in the United States, with 76,000 new cases each year and almost 14,000 deaths. Over the past half-century, RCC has more than doubled in incidence. RCC seems to have a greater incidence among Hispanics with a nearly three-fold increase. The epidemiology of RCC has been studied. However, there is a gap in knowledge on disparities in RCC within minority populations. We aimed to analyze epidemiologic patterns of RCC within our community, where Hispanics alone make up 70% of the population. We conducted a retrospective study to describe characteristics and calculate rates of recurrence of RCC among patients treated at Sylvester Comprehensive Cancer Center in Miami, FL, from June 2010 to April 2020. The patients were aged 18 and older and had a pathologic diagnosis of RCC. We identified ethnicity as Hispanic/Latino (HL) or non-Hispanic/Latino (NHL). Clinical presentation was classified based on information from the last encounter as either local RCC without recurrence, metastatic RCC after nephrectomy, or metastatic RCC at diagnosis/de novo. We analyzed a total of 1168 patients, from which 661 patients (55.7%) were identified as NHL and 507 (42.7%) as HL. A subtotal of 333 patients (28.5%) had metastatic RCC at diagnosis/de novo, from which 199 (59.7%) were NHL, and 134 (40.2%) were HL. A subtotal of 835 patients (71.5%) were diagnosed with local RCC and underwent nephrectomy, from which 462 (55.3%) were identified as NHL and 373 (44.7%) as HL. From the NHL group that underwent nephrectomy, 189 patients (40.9%) had recurrent disease and 273 (59%) did not. From the HL group, 121 patients (32.4%) had recurrent disease and 252 (67.5%) did not. Overall, 310 patients had metastasis after nephrectomy, from which 121 (39%) were HL and 189 (60.9%) were NHL. In this cohort of patients with RCC, four out of every ten patients with metastasis at diagnosis were HL. NHL appeared to have more recurrence of disease after nephrectomy compared to Hispanics. Further histopathologic, clinical, and genomic characteristics will be presented, along with treatment outcomes and clinical trial participation in the NHL and HL cohorts.
Citation Format: Abner Antonio Murray Melo, Jesus Antonio Ocejo Gallegos, Jaime Rafael Merchan. Epidemiological characteristics and patterns of recurrence of renal cell carcinoma in Hispanics: A single US center cohort study [abstract]. In: Proceedings of the 15th AACR Conference on the Science of Cancer Health Disparities in Racial/Ethnic Minorities and the Medically Underserved; 2022 Sep 16-19; Philadelphia, PA. Philadelphia (PA): AACR; Cancer Epidemiol Biomarkers Prev 2022;31(1 Suppl):Abstract nr C121.