Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Jun. 30, 2023	Dec. 31, 2022
Current assets:
Cash	$ 28,688	$ 33,364
Prepaid expenses	486	168
Total current assets	29,174	33,532
Property and equipment, net	5	2
Total assets	29,179	33,534
Current liabilities:
Accounts payable	967	708
Accrued liabilities	2,041	280
Warrant liabilities	975	10,796
Total current liabilities	3,983	11,784
Total liabilities	3,983	11,784
Commitments and contingencies (Note 4)
Stockholders' equity
Preferred stock, $0.001 par value per share; 10,000,000 shares authorized as of June 30, 2023 and December 31, 2022; no shares issued or outstanding as of June 30, 2023 and December 31, 2022.
Common stock, $0.001 par value per share, 100,000,000 shares authorized as of June 30, 2023 and December 31, 2022; 38,241,685 and 25,436,019 shares issued and outstanding as of June 30, 2023 and December 31, 2022, respectively.	38	25
Additional paid-in capital	124,291	117,520
Accumulated deficit	(99,133)	(95,795)
Total stockholders' equity	25,196	21,750
Total liabilities and stockholders' equity	$ 29,179	$ 33,534