STRATEGIC ALLIANCE AND COLLABORATION WITH SERVIER (Tables)

12 Months Ended

Dec. 31, 2019

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Components of Collaboration Revenue

Collaboration revenue under the Servier Collaboration Agreement consisted of the following:

	Year Ended December 31,
	2019		2018
	(in thousands)
Milestone payments	$	—	$	3,690
Research and development reimbursable costs	4,308		3,683
Total collaboration revenue	$	4,308	$	7,373