THE WOODLANDS, Texas--(BUSINESS WIRE)--Repros Therapeutics Inc. (NasdaqGM:RPRX) today released encouraging results from its pilot study of the potential for adverse cardiac events associated with administration of doses of Proellex up to four times higher than the intended marketed dose. The study was designed to assess the potential for QT prolongation, an indicator of potential adverse cardiac effects and a major safety consideration for the FDA.