Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Jun. 30, 2022	Dec. 31, 2021
Current assets:
Cash and cash equivalents	$ 272,629	$ 147,914
Short-term investments	900,147	351,394
Receivable from collaboration partners ($35,720 and $744,535 from a related party)	35,831	744,595
Accrued interest receivable	3,196	2,227
Prepaid expenses and other current assets	15,672	15,620
Total current assets	1,227,475	1,261,750
Long-term investments	98,329	181,990
Property and equipment, net	33,416	32,455
Right-of-use assets	104,025	104,968
Restricted cash	3,005	3,005
Other long-term assets ($1,322 and $0 from a related party)	10,523	7,730
Total assets	1,476,773	1,591,898
Current liabilities:
Accounts payable	21,984	10,261
Accrued research and development	35,019	29,587
Other accrued liabilities	14,438	24,181
Deferred revenue, current ($89,388 and $96,981 to a related party)	90,117	102,003
Other current liabilities	2,466	52
Total current liabilities	164,024	166,084
Deferred revenue, noncurrent ($428,546 and $462,217 to a related party)	429,339	462,217
Operating lease liabilities, noncurrent	121,343	116,887
Other long-term liabilities	14,681	5,260
Total liabilities	729,387	750,448
Commitments (Note 10)
Stockholders’ equity:
Preferred stock, $0.0001 par value, 10,000,000 shares authorized as of June 30, 2022 and December 31, 2021; no shares issued and outstanding as of June 30, 2022 and December 31, 2021	0	0
Common stock, $0.0001 par value, 400,000,000 shares authorized as of June 30, 2022 and December 31, 2021; 72,085,473 and 70,781,736 shares issued and outstanding as of June 30, 2022 and December 31, 2021, respectively. Shares outstanding includes zero and 9,946 shares issued but subject to vesting as of June 30, 2022 and December 31, 2021, respectively.	7	7
Additional paid-in capital	1,164,602	1,118,058
Accumulated deficit	(409,979)	(275,354)
Accumulated other comprehensive loss	(7,244)	(1,261)
Total stockholders’ equity	747,386	841,450
Total liabilities and stockholders’ equity	$ 1,476,773	$ 1,591,898