CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Jun. 30, 2022	Dec. 31, 2021
Current assets:
Cash and cash equivalents	$ 34,008	$ 40,014
Short-term investments	73,192	75,870
Accounts receivable	2,395	3,224
Prepaid expenses and other current assets	3,801	3,267
Total current assets	113,396	122,375
Long-term investments	0	23,964
Property and equipment, net	789	505
Restricted cash, long-term	635	726
Operating lease right-of-use asset	5,032	5,749
Goodwill	8,982	8,982
Total assets	128,834	162,301
Current liabilities:
Accounts payable	5,511	6,417
Accrued liabilities	5,575	6,339
Current portion of operating lease liability	1,065	682
Total current liabilities	12,151	13,438
Long-term operating lease liability	3,390	4,358
Liability related to the sale of future royalties, net	51,248	53,798
Total liabilities	66,789	71,594
Stockholders’ equity:
Common stock, $0.01 par value—227,812,500 shares authorized; 91,814,665 shares issued and outstanding at June 30, 2022; 227,812,500 shares authorized; 91,645,369 shares issued and outstanding at December 31, 2021	918	916
Additional paid-in capital	1,186,056	1,182,225
Accumulated deficit	(1,124,374)	(1,092,325)
Accumulated other comprehensive loss	(555)	(109)
Total stockholders’ equity	62,045	90,707
Total liabilities and stockholders’ equity	$ 128,834	$ 162,301