CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Sep. 30, 2024	Dec. 31, 2023
Current assets
Cash and cash equivalents	$ 28,452	$ 19,841
Marketable securities	66,502	110,406
Accounts receivable from collaboration	0	43
Prepaid expenses and other current assets	3,259	3,497
Total current assets	98,213	133,787
Property and equipment, net	316	385
Operating lease right-of-use (ROU) assets	1,421	2,339
Other assets	312	312
Total assets	100,262	136,823
Current liabilities
Accounts payable	1,335	461
Accrued research and development expenses	1,586	885
Other accrued expenses	4,765	5,744
Deferred revenue from a related party - short-term	32,620	30,915
Operating lease liabilities - short-term	1,329	1,220
Total current liabilities	41,635	39,225
Deferred revenue from a related party - long-term	32,511	55,379
Operating lease liabilities - long-term	113	1,122
Total liabilities	74,259	95,726
Commitments and contingencies
Stockholders' equity
Preferred stock, $0.001 par value; 5,000,000 shares authorized; no shares issued or outstanding
Common stock, $0.001 par value; 150,000,000 shares authorized as of September 30 2024 and December 31, 2023; 6,354,414 and 5,482,752 shares issued and outstanding as of September 30, 2024 and December 31, 2023, respectively	6	5
Additional paid-in capital	841,743	826,921
Accumulated other comprehensive loss	(156)	(81)
Accumulated deficit	(815,590)	(785,748)
Total stockholders' equity	26,003	41,097
Total liabilities and stockholders' equity	$ 100,262	$ 136,823