Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Current assets:
Cash and cash equivalents	$ 184,259	$ 47,730
Investments in marketable securities, current	0	220,499
Restricted cash, current	1,602	0
Prepaid expenses and other current assets	2,160	7,136
Total current assets	188,021	275,365
Restricted cash	114	1,716
Investments in marketable securities, non-current	0	15,322
Property and equipment, net	0	22,630
Operating lease right-of-use assets	321	5,580
Other assets	0	1,289
Total assets	188,456	321,902
Current liabilities:
Accounts payable	250	2,608
Accrued compensation	1,534	3,799
Accrued research costs	0	720
Accrued expenses and other current liabilities	2,728	1,871
Operating lease liabilities, current	285	4,045
Total current liabilities	4,797	13,043
Operating lease liabilities, non-current	77	1,749
Other long- term liabilities	0	10,819
Total liabilities	4,874	25,611
Commitments And Contingencies (Note 7)
Stockholders' equity:
Preferred stock, $0.00001 par value, 10,000,000 shares authorized as of December 31, 2023 and 2022; and no shares issued and outstanding as of December 31, 2023 and 2022	0	0
Common stock, $0.00001 par value, 300,000,000 shares authorized as of December 31, 2023 and 2022; 58,008,396 and 58,221,760 shares issued and outstanding as of December 31, 2023 and 2022, respectively	1	1
Additional paid-in-capital	550,635	539,741
Accumulated other comprehensive loss	0	(1,048)
Accumulated deficit	(367,054)	(242,403)
Total stockholders' equity	183,582	296,291
Total liabilities and stockholders' equity	$ 188,456	$ 321,902