Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Current assets:
Cash and cash equivalents	$ 65,269	$ 98,959
Marketable securities, current	187,667	19,889
Related party collaboration receivable	3,253	257
Prepaid expenses and other current assets	5,736	5,394
Total current assets	261,925	124,499
Property and equipment, net	17,109	17,857
Deposits and other non-current assets	1,593	1,515
Operating lease, right-of-use asset	14,026	15,485
Total assets	294,653	159,356
Current liabilities:
Accounts payable	3,270	2,566
Accrued expenses	11,051	7,816
Other current liabilities	3,106	2,832
Deferred revenue, current	44,261	59,377
Total current liabilities	61,688	72,591
Deferred revenue, non-current	37,826	6,450
Other non-current liabilities	18,919	21,295
Total liabilities	118,433	100,336
Commitments and contingencies (see note 8)
Stockholders' equity:
Preferred stock, $0.001 par value: 5,000,000 shares authorized at September 30, 2023 and December 31, 2022; no shares issued and outstanding at September 30, 2023 and December 31, 2022
Common stock, $0.001 par value: 120,000,000 shares authorized at September 30, 2023 and December 31, 2022; 43,909,161 and 38,613,891 shares issued and outstanding at September 30, 2023 and December 31, 2022, respectively	44	38
Additional paid-in capital	494,001	452,713
Accumulated other comprehensive loss	(248)	(219)
Accumulated deficit	(317,577)	(393,512)
Total stockholders' equity	176,220	59,020
Total liabilities and stockholders' equity	$ 294,653	$ 159,356