RNA-seq profile of African American men with a clinically localized prostate cancer

Naoya Nagaya, Jeffrey Rosenfeld, Geun Taek Lee, Isaac Yi Kim

    Research output: Contribution to journalArticlepeer-review


    Background: Prostate cancer in African American (AA) men has a poor prognosis. This study aimed to identify potential genetic risk factors for prostate cancer in AA men. Methods: We used prostate cancer tissue from 61 patients who underwent radical prostatectomy. We compared somatic gene expression in Caucasian (CA) and AA men using RNA sequencing. Results: By comparing the RNA-seq data obtained from prostate cancer tissue between AA and CA men, this study showed a significant difference in expression levels of 45 genes. Pathway analysis of 45 genes using Kyoto Encyclopedia of Genes and Genomesenrichment analysis revealed a neuroactive ligand–receptor interaction signal. In addition, the results of the Ingenuity Pathway Analysis showed pathways involved sphingosine-1-phosphate signaling. Furthermore, validating 45 genes in the The Cancer Genome Atlas (TCGA) Provisional cohort, cholinergic receptor muscarinic 3 expression level was significantly lower in AA than in CA men, and the results showed a significantly higher rate of biochemical recurrence in patients with low expression. Conclusions: We identified genetic differences of clinically localized prostate cancer in AAs and CAs by RNA sequencing.

    Original languageEnglish (US)
    Pages (from-to)125-131
    Number of pages7
    JournalProstate International
    Issue number3
    StatePublished - Sep 2021

    ASJC Scopus subject areas

    • Urology


    • African American
    • Caucasian
    • Prostate cancer
    • RNA-seq


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