CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Jun. 30, 2025	Dec. 31, 2024
Current assets
Cash and cash equivalents	$ 24,006	$ 38,344
Marketable securities	50,974	73,735
Prepaid expenses and other current assets	2,487	3,424
Total current assets	77,467	115,503
Property and equipment, net	219	284
Operating lease right-of-use (ROU) assets	2,782	3,069
Other assets	312	312
Total assets	80,780	119,168
Current liabilities
Accounts payable	743	585
Accrued research and development expenses	1,691	2,273
Other accrued expenses	3,407	6,862
Deferred revenue from a related party - short-term	40,917	37,622
Operating lease liabilities - short-term	533	461
Total current liabilities	47,291	47,803
Deferred revenue from a related party - long-term	13,038	35,378
Operating lease liabilities - long-term	2,351	2,628
Total liabilities	62,680	85,809
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 June 30, 2025 and December 31, 2024; 7,672,249 and 7,457,240 shares issued and outstanding as of June 30, 2025 and December 31, 2024, respectively	8	7
Additional paid-in capital	863,312	859,488
Accumulated other comprehensive loss	(279)	(211)
Accumulated deficit	(844,941)	(825,925)
Total stockholders' equity	18,100	33,359
Total liabilities and stockholders' equity	$ 80,780	$ 119,168