GPRC6A and Familial prostate cancer: We successfully replicated the association of rs13385191 (located in the C2orf43 gene, P = 8.60×10−5), rs12653946 (P = 1.33×10−6), rs1983891 (FOXP4, P = 6.22×10−5), and rs339331 (GPRC6A/RFX6, P = 1.42×10−5) with prostate cancer.