Amgen to re-acquire rights to Prolia and Xgeva (denosumab) and Vectibix (panitumumab) from GSK

Amgen has announced that it has entered into a definitive agreement with GSK to reacquire all of its remaining rights to Prolia (denosumab), XGEVA (denosumab) and Vectibix (panitumumab) in 48 countries in Asia, South America, Europe, Australia and other regions throughout the world. The agreement involves key expansion markets for Amgen including Brazil, China, Colombia, Hong Kong, Israel, Singapore, South Korea, Taiwan and Thailand.

GSK has held select regional rights to Prolia and XGEVA since 2009 and to Vectibix since 2010 under license from Amgen. In 2014, GSK generated approximately $111 million in combined sales from these licenses. Amgen will make undisclosed milestone payments to GSK on signing and on the successful transition of the products back to Amgen. Amgen will book all product sales following this transition.