Liability Related to Sale of Future Royalties (Tables)

12 Months Ended

Dec. 31, 2018

Liability Related to Sale of Future Royalties

Schedule of Liability account during the period from the inception of the royalty transaction

The following table shows the activity within the liability account during the year ended December 31, 2018 and the period from inception (in thousands):

	Twelve Months		Period from
	Ended		inception to
	December 31,		December 31,
	2018		2018
Liability related to sale of future royalties, net — beginning balance	$	169,413	$	—
Proceeds from sale of future royalties, net		—		194,135
Kadcyla royalty payments received and paid		(31,805)		(103,624)
Non-cash interest expense recognized		10,617		57,714
Liability related to sale of future royalties, net — ending balance	$	148,225	$	148,225