WORCESTER, Mass.--(BUSINESS WIRE)--RXi Pharmaceuticals Corporation (Nasdaq: RXII), a biopharmaceutical company pursuing the development and commercialization of proprietary therapeutics based on RNA interference (RNAi), today announced that new pre-clinical data using proprietary rxRNA™ compounds was presented at the Keystone Symposia’s RNA Silencing: Mechanism, Biology and Application held January 14-19 in Keystone, Colorado.