Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Current assets:
Cash and cash equivalents	$ 268,321	$ 98,959
Marketable securities	4,993	19,889
Accounts receivable	25,000
Related party collaboration receivable	328	257
Prepaid expenses and other current assets	3,983	5,394
Total current assets	302,625	124,499
Property and equipment, net	17,138	17,857
Deposits and other non-current assets	1,515	1,515
Operating lease, right-of-use assets	15,016	15,485
Total assets	336,294	159,356
Current liabilities:
Accounts payable	3,698	2,566
Accrued expenses	7,639	7,816
Other current liabilities	2,922	2,832
Deferred revenue, current	5,680	59,377
Total current liabilities	19,939	72,591
Deferred revenue, non-current	78,872	6,450
Other non-current liabilities	20,522	21,295
Total liabilities	119,333	100,336
Commitments and contingencies (see note 8)
Stockholders' equity:
Preferred stock $0.001 par value: 5,000,000 shares authorized at March 31, 2023 and December 31, 2022; no shares issued and outstanding at March 31, 2023 and December 31, 2022
Common stock, $0.001 par value: 120,000,000 shares authorized at March 31, 2023 and December 31, 2022; 43,435,889 and 38,613,891 shares issued and outstanding at March 31, 2023 and December 31, 2022, respectively	43	38
Additional paid-in capital	486,518	452,713
Accumulated other comprehensive loss	(132)	(219)
Accumulated deficit	(269,468)	(393,512)
Total stockholders' equity	216,961	59,020
Total liabilities and stockholders' equity	$ 336,294	$ 159,356