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  • Title: Germline alterations among Hispanic men with prostate cancer.
    Author: Pan E, Shaya J, Madlensky L, Randall JM, Javier-Desloges J, Millard FE, Rose B, Parsons JK, Nielsen SM, Hatchell KE, Esplin ED, Nussbaum RL, Weise N, Murphy J, Martinez ME, McKay RR.
    Journal: Prostate Cancer Prostatic Dis; 2022 Sep; 25(3):561-567. PubMed ID: 35228665.
    Abstract:
    BACKGROUND: Little is known about the true rate of pathogenic (P)/likely pathogenic (LP) germline alterations in Hispanic men with prostate cancer as most studies analyzing the prevalence of P/LP germline alterations were performed in a largely non-Hispanic white population (NHW). METHODS: We performed a retrospective analysis of two separate cohorts of men with prostate cancer: (1) a multicenter cohort of 17,256 men who underwent germline testing in a CLIA-certified laboratory and (2) a single-center cohort of all men eligible for germline testing between 2018 and 2020. The proportions of P/LP alterations and variants of uncertain significance (VUS) were computed. Fisher's exact test was used to compare germline alteration rates for significance. A multivariate logistic regression was performed adjusting for demographic and clinical factors to examine factors associated with germline testing. RESULTS: In the multicenter cohort, the rate of P/LP germline alterations among self-reported Hispanic men was 7.1%, which was lower than self-reported NHW men (9.7% vs. 7.1%, p = 0.058), but was not statistically significant. The VUS rate was significantly higher among the Hispanic cohort (21.5% vs. 16.6%, p = 0.005). In the single-center cohort, 136 Hispanic patients were eligible for testing of which 34 underwent germline testing (26.1%, N = 34/136). Of all prostate cancer patients in the single-center cohort undergoing germline testing (n = 173), the rate of P/LP alterations in Hispanic patients was not significantly different compared to NHW patients (14.7% vs. 12.2%, p = 0.77). The rate of VUS in Hispanic patients was significantly higher than that of NHW patients (20.6% vs. 7.2%, p = 0.047). CONCLUSION: The P/LP germline alteration rate in our cohorts was similar between Hispanic and NHW men. The rate of VUS was significantly higher in Hispanic men, a consequence of undertesting in minority populations. These data support that Hispanic men with prostate cancer should be screened for germline testing similar to NHW men.
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