Consolidated Balance Sheets - USD ($) $ in Thousands	Jun. 30, 2025	Dec. 31, 2024
Current assets:
Cash and cash equivalents	$ 9,376	$ 20,020
Accounts receivable	816	507
Prepaid expenses	1,580	734
Other current assets	13	13
Total current assets	11,785	21,274
Property and equipment, net	3,065	3,225
Operating lease right-of-use asset	452	597
Other assets	30	30
Total assets	15,332	25,126
Current liabilities:
Accounts payable (includes $491 to a related party as of December 31, 2024)	1,129	1,452
Accrued liabilities (includes $304 to a related party as of December 31, 2024)	1,537	2,967
Current portion of operating lease liabilities	381	375
Total current liabilities	3,047	4,794
Liability related to the sales of future royalties, net	55,702	51,767
Warrant liabilities	4,765	6,692
Operating lease liabilities	152	328
Other non-current liabilities	400	400
Total liabilities	64,066	63,981
Commitments and contingencies
Stockholders' deficit:
Preferred stock, $0.001 par value; 10,000,000 shares authorized and no shares issued at June 30, 2025 and December 31, 2024	0	0
Common stock, $0.001 par value; 400,000,000 and 200,000,000 shares authorized at June 30, 2025 and December 31, 2024, respectively; 78,495,760 and 76,578,383 shares issued and outstanding at June 30, 2025 and December 31, 2024, respectively	78	77
Additional paid-in capital	319,181	316,343
Accumulated deficit	(367,993)	(355,275)
Total stockholders` deficit	(48,734)	(38,855)
Total liabilities and stockholders` deficit	$ 15,332	$ 25,126