Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Jun. 30, 2023	Dec. 31, 2022
Current assets:
Cash and cash equivalents	$ 244,293	$ 98,959
Marketable securities, current	28,453	19,889
Related party collaboration receivable	3,350	257
Prepaid expenses and other current assets	6,080	5,394
Total current assets	282,176	124,499
Property and equipment, net	17,239	17,857
Deposits and other non-current assets	1,593	1,515
Operating lease, right-of-use asset	14,528	15,485
Total assets	315,536	159,356
Current liabilities:
Accounts payable	1,659	2,566
Accrued expenses	9,060	7,816
Other current liabilities	3,013	2,832
Deferred revenue, current	31,666	59,377
Total current liabilities	45,398	72,591
Deferred revenue, non-current	51,383	6,450
Other non-current liabilities	19,729	21,295
Total liabilities	116,510	100,336
Commitments and contingencies (see note 8)
Stockholders' equity:
Common stock, $0.001 par value: 120,000,000 shares authorized at June 30, 2023 and December 31, 2022; 43,759,409 and 38,613,891 shares issued and outstanding at June 30, 2023 and December 31, 2022, respectively	44	38
Additional paid-in capital	490,791	452,713
Accumulated other comprehensive loss	(133)	(219)
Accumulated deficit	(291,676)	(393,512)
Total stockholders' equity	199,026	59,020
Total liabilities and stockholders' equity	$ 315,536	$ 159,356