SUBSEQUENT EVENT

12 Months Ended

Dec. 31, 2015

Subsequent Events [Abstract]

SUBSEQUENT EVENT

(25) SUBSEQUENT EVENT

On January 1, 2016, the Company acquired all global rights to Kuvan and pegvaliase from Ares Trading, S.A. (Merck Serono), with the exception of Kuvan in Japan, in exchange for an upfront payment of $371.8 million and up to and additional €185.0 million if certain sales and regulatory milestones are attained. Previously, the Company had exclusive rights to Kuvan in the U.S. and Canada and pegvaliase in the U.S. and Japan. Under the terms of the agreement, the Company acquired exclusive worldwide rights to Kuvan and pegvaliase with the exception of Kuvan in Japan.