The document discusses strategic alliances and joint ventures between pharmaceutical companies. It provides details of four examples of partnerships: Merck partnered with Alnylam in a non-equity strategic alliance to collaborate on RNAi drug development. GSK partnered with Dong-A through an equity strategic alliance to co-promote products in South Korea. Hisun and Pfizer formed a joint venture to collaborate on local production and distribution in China. Intrexon partnered with Sun Pharmaceuticals through a joint venture to develop new methods for treating ocular diseases using synthetic biology.