However, the G Protein-Coupled Receptor Family C Group 6 Member A (GPRC6A)19, 20, 21 activation stimulated prostate cancer cell proliferation44, in contrast to our previous findings that membrane acting androgens induce prostate cancer cell apoptosis12, 13; furthermore, GPRC6A is not specific for androgen binding. This evidence concerns the gene GPRC6A and prostate cancer.