Prostate cancer is the most frequently diagnosed visceral cancer of men, responsible for approximately 40,000 deaths in adult males per year. To identify the genetic causes of prostate cancer, we performed a whole genome scan of affected sib pairs, using DNA markers spaced evenly across the human genome. We demonstrated that regions on chromosomes 1,4,5,7,8,11,16 and 19 might harbor genes that predispose individuals to prostate cancer and may affect tumor growth rate and tumor aggressiveness. Here we present DNA sequence analysis of KIAA 0872 and 17-β hydroxysteroid dehydrogenase that are located on chromosome 16 within the mapped region, and we demonstrate that neither of these genes carries mutations in the protein coding region or their splice junction sites. These results suggest that these genes are less likely to be associated with the cause of familial prostate cancer.
INTRODUCTIONProstate cancer is the second leading cause of cancer mortality for men in the U.S. with a rate of 26 deaths per 100,000. 1 Although prostate cancer is potentially curable in its early stages, treatment of advanced hormone-refractory prostate cancer is ineffective, making early detection and treatment of disease a necessity. 2 Unfortunately, approximately 30% of men with prostate cancer have tumor that has spread beyond the prostate gland at the time of diagnosis. Despite the impressive response of metastases to androgen hormone deprivation, the survival rate is dismal, with greater than 90% of these patients dying from their cancer. 3 Screening tests for prostate cancer include digital rectal examination, transrectal ultrasonography, and measurement of prostate-specific antigen. However, these tests often do not detect the tumors before they have spread. The development of additional tests for earlier identification of prostate tumors will be extremely important. 4,5