Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Sep. 30, 2022	Jun. 30, 2022	Dec. 31, 2021
Current assets:
Cash and cash equivalents	$ 217,647		$ 147,914
Short-term investments	831,135		351,394
Receivable from collaboration partners ($26,521 and $744,535 from a related party)	27,286		744,595
Accrued interest receivable	3,423		2,227
Prepaid expenses and other current assets	21,625		15,620
Total current assets	1,101,116		1,261,750
Long-term investments	143,138		181,990
Property and equipment, net	33,892		32,455
Right-of-use assets	102,073		104,968
Restricted cash	3,005		3,005
Other long-term assets ($1,856 and $0 from a related party)	10,598		7,730
Total assets	1,393,822		1,591,898
Current liabilities:
Accounts payable	10,546		10,261
Accrued research and development	39,827		29,587
Other accrued liabilities	20,528		24,181
Deferred revenue, current ($103,291 and $96,981 to a related party)	103,291		102,003
Other current liabilities	2,984		52
Total current liabilities	177,176		166,084
Deferred revenue, noncurrent ($382,584 and $462,217 to a related party)	382,584		462,217
Operating lease liabilities, noncurrent	119,195		116,887
Other long-term liabilities	16,166		5,260
Total liabilities	695,121		750,448
Commitments (Note 11)
Stockholders’ equity:
Preferred stock, $0.0001 par value, 10,000,000 shares authorized; no shares issued and outstanding	0		0
Common stock, $0.0001 par value, 400,000,000 shares authorized; 72,352,380 and 70,781,736 shares issued and outstanding as of September 30, 2022 and December 31, 2021, respectively. Shares outstanding includes zero and 9,946 shares issued but subject to vesting as of September 30, 2022 and December 31, 2021, respectively	7		7
Additional paid-in capital	1,183,393		1,118,058
Accumulated deficit	(474,898)		(275,354)
Accumulated other comprehensive loss	(9,801)		(1,261)
Total stockholders’ equity	698,701	$ 747,386	841,450
Total liabilities and stockholders’ equity	$ 1,393,822		$ 1,591,898