For BRCA1 CNV detection by ddPCR, the normal cells control, healthy volunteers, and advanced prostate cancer patients with normal final ratios from MLPA exhibited values of 2.0 ± 0.1, 1.9 ± 0.1, and 1.6 ± 0.2, respectively, with no significant differences among these groups. This evidence concerns the gene BRCA1 and prostate carcinoma.