Liability Related to Sale of Future Royalties (Tables)

9 Months Ended

Sep. 30, 2012

Summary of Liability Related to Potential Future Royalties

The following table shows the activity within the liability account:

	Nine months ended September 30, 2012
Liability related to sale of future royalties—beginning balance	$	—
Proceeds from sale of future royalties		124,000
Non-cash interest expense		12,641
CIMZIA® and MIRCERA® royalties		(6,895	)
Total liability related to sale of future royalties		129,746
Less: current portion		(3,000	)
Liability related to sale of future royalties, non-current portion:	$	126,746