For African-American men, the chances of developing prostate cancer are increased if a sister has breast cancer, according to a study by researchers at the University of Michigan, Ann Arbor.
“Previous studies have suggested that having a brother with prostate cancer confers a higher risk than another relative, such as a father or son,” Dr. Jennifer L. Beebe-Dimmer noted in a written statement. “But this is the first time a link has been shown between sisters with breast cancer and prostate cancer risk among African-American men.”
Dr. Beebe-Dimmer and colleagues explored the clustering of prostate and breast cancer in families, by studying data on 121 African-American men with prostate cancer and 179 without prostate cancer. Their findings appear in the medical journal Urology.