Expression of mRNA for the export transporters ZnT-1, ZnT-2, ZnT-4, ZnT-5, ZnT-6, and ZnT7 are recorded from human prostate cancer tissue, mouse prostate tissue, non-tumorigenic RWPE1 cell line, and prostate cancer cell lines [65,87]. The gene discussed is SLC30A7; the disease is prostate cancer.