Transcripts for the normal ARfl and the most abundant AR splice variants known so far [16]; AR-V1, AR-V7, and AR-V567es, were detected and their levels quantified in non-malignant and GS7-8 tissue parts of primary prostate tumors and in bone metastases samples, using real-time RT-PCR analysis. The gene discussed is AR; the disease is prostate neoplasm.