Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Current assets:
Cash and cash equivalents	$ 106,124	$ 141,028
Restricted cash	197	179
Accounts receivable		257
Prepaid expenses and other current assets	8,422	8,140
Total current assets	114,743	149,604
Other assets		92
Property and equipment, net	185	910
Total assets	114,928	150,606
Current liabilities:
Accounts payable	622	1,209
Accrued expenses and other current liabilities	5,064	3,374
Total current liabilities	5,686	4,583
Term loan, non-current	14,155
Other long-term liabilities	331	114
Total liabilities	20,172	4,697
Commitments and contingencies (see Note 17)
Stockholders' equity:
Preferred stock, $0.01 par value, 10,000 shares authorized and no shares issued and outstanding as of December 31, 2021 and December 31, 2020
Common stock, $0.01 par value, 150,000 shares authorized as of December 31, 2021 and December 31, 2020, 67,716 and 67,716 issued and outstanding as of December 31, 2021 and December 31, 2020	677	633
Additional paid-in capital	381,966	358,277
Accumulated deficit	(287,887)	(213,001)
Total stockholders' equity	94,756	145,909
Total liabilities and stockholders' equity	$ 114,928	$ 150,606