CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Jun. 30, 2023	Dec. 31, 2022	[1]
Current assets:
Cash and cash equivalents	$ 53,271	$ 73,456
Short-term marketable securities	140,273	198,036
Prepaid expenses and other current assets	8,623	9,787
Restricted cash	1,499	0
Total current assets	204,402	288,859
Property and equipment, net	7,760	8,496
Operating lease right-of-use asset	1,067	2,096
Restricted cash	2,455	3,954
Other non-current assets	4,860	3,997
Total assets	220,544	307,402
Current liabilities:
Accounts payable	5,855	8,453
Accrued liabilities	19,128	33,638
Operating lease liability, current	2,751	5,385
Contract liabilities	689	366
Total current liabilities	28,423	47,842
Total liabilities	28,423	47,842
Commitments and contingencies (Note 6)
Stockholders' equity:
Preferred stock, $0.001 par value; 10,000 shares authorized; no shares issued or outstanding as of June 30, 2023 and December 31, 2022, respectively	0	0
Common stock, $0.001 par value; 400,000 shares authorized; 82,711 and 81,885 shares issued and outstanding as of June 30, 2023 and December 31, 2022, respectively	83	82
Additional paid-in capital	859,728	841,413
Accumulated other comprehensive loss	(149)	(302)
Accumulated deficit	(667,541)	(581,633)
Total stockholders' equity	192,121	259,560
Total liabilities and stockholders' equity	220,544	307,402
Related party
Current assets:
Related party receivable from collaboration	$ 736	$ 7,580

[1] The condensed consolidated balance sheet as of December 31, 2022 has been derived from the audited financial statements as of that date.