Consolidated Balance Sheets - USD ($) $ in Thousands	Jun. 30, 2022	Dec. 31, 2021
Assets
Cash and cash equivalents	$ 147,154	$ 590,258
Marketable debt securities	334,317	0
Prepaid expenses and other current assets	9,739	6,217
Total current assets	491,210	596,475
Property and equipment, net	11,033	11,604
Operating lease right-of-use-assets	129,159	126,777
Other assets	147	160
Total assets	631,549	735,016
Liabilities and stockholders’ equity
Accounts payable	7,754	13,505
Accrued direct research liabilities	14,231	14,249
Other current liabilities	16,121	21,450
Operating lease liabilities, current	8,219	3,142
Deferred revenue	0	1,648
Total current liabilities	46,325	53,994
Other long-term liabilities	5	0
Opearting lease liabilities, noncurrent	134,293	132,891
Liability related to sale of future royalties, net	382,290	362,142
Total noncurrent liabilities	516,588	495,033
Commitments and contingencies
Stockholders’ equity:
Additional paid-in capital	1,471,627	1,441,584
Accumulated deficit	(1,403,028)	(1,255,631)
Total stockholders’ equity	68,636	185,989
Total liabilities and stockholders’ equity	631,549	735,016
Common Stock A
Stockholders’ equity:
Common stock value	32	31
Common Stock B
Stockholders’ equity:
Common stock value	$ 5	$ 5