Balance Sheets - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Current assets:
Cash and cash equivalents	$ 44,573	$ 56,205
Short-term restricted cash	179	179
Prepaid expenses and other current assets	3,005	7,646
Total current assets	47,757	64,030
Other assets	206	2,622
Property and equipment, net		32
Total assets	47,963	66,684
Current liabilities:
Accounts payable	1,374	724
Accrued expenses and other current liabilities	1,157	2,772
Finance lease, current	1,138
Term loan, current	5,654	2,795
Total current liabilities	9,323	6,291
Finance lease, non-current	940
Term loan, non-current	19,444	22,108
Total liabilities	29,707	28,399
Commitments and contingencies (see Note 12)
Stockholders' equity:
Preferred stock, $0.01 par value, 10,000 shares authorized and no shares issued and outstanding as of March 31, 2023 and December 31, 2022
Common stock, $0.01 par value, 150,000 shares authorized as of March 31, 2023 and December 31, 2022, 67,716 issued and outstanding as of March 31, 2023 and December 31, 2022	677	677
Additional paid-in capital	391,381	390,344
Accumulated deficit	(373,802)	(352,736)
Total stockholders' equity	18,256	38,285
Total liabilities and stockholders' equity	$ 47,963	$ 66,684