CHICAGO, Sept. 15 /PRNewswire-FirstCall/ -- A new study demonstrates that the investigational drug, phenoxodiol, may be effective in the treatment of prostate cancer through its ability to target a protein that appears to be selective for prostate cancer cells. Prostate cancer is one of the most serious and common types of cancer found in American men, killing more than 30,000 men in the U.S. every year.