Condensed Balance Sheets (Unaudited) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Current assets:
Cash and cash equivalents	$ 142,942	$ 108,297
Restricted cash	822	822
Marketable securities, current	86,492	132,757
Prepaid expenses and other current assets	3,022	5,130
Total current assets	233,278	247,006
Property and equipment, net	11,238	10,955
Marketable securities, noncurrent	0	2,495
Right-of-use assets	9,130	9,539
Other assets	314	313
Total assets	253,960	270,308
Current liabilities:
Accounts payable	1,774	2,996
Accrued expenses	8,535	7,308
Operating lease liabilities, current	281	528
Total current liabilities	10,590	10,832
Operating lease liabilities, noncurrent	13,197	13,448
Total liabilities	23,787	24,280
Stockholders’ equity:
Preferred stock, $0.00001 par value, 5,000,000 shares authorized at March 31, 2023 and December 31, 2022. No shares issued or outstanding at March 31, 2023 and December 31, 2022.
Common stock, $0.00001 par value, 1,000,000,000 shares authorized; 45,774,761 and 45,771,332 shares issued and outstanding at March 31, 2023 and December 31, 2022, respectively.
Additional paid-in capital	490,460	487,516
Accumulated deficit	(260,171)	(241,043)
Accumulated other comprehensive loss	(116)	(445)
Total stockholders’ equity	230,173	246,028
Total liabilities and stockholders’ equity	$ 253,960	$ 270,308