Condensed Consolidated Balance Sheets (Unaudited) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Current assets:
Cash and cash equivalents	$ 54,889	$ 52,432
Restricted cash	25	25
Short-term available-for-sale securities	71,197	98,288
Prepaid and other current assets	9,298	11,237
Total current assets	135,409	161,982
Property and equipment, net	138	150
Other assets	218	290
Total assets	135,765	162,422
Current liabilities:
Accounts payable	4,421	6,843
Accrued expenses	8,979	10,194
Term loan, current	5,000	2,500
Total current liabilities	18,400	19,537
Term loan, non-current, net	14,473	16,898
Other non-current liability	151	30
Total liabilities	33,024	36,465
Commitments and contingencies (Note 5)
Stockholders’ equity:
Common stock	20	20
Additional paid-in capital	341,759	339,218
Accumulated other comprehensive loss	(256)	(64)
Accumulated deficit	(238,782)	(213,217)
Total stockholders’ equity	102,741	125,957
Total liabilities and stockholders’ equity	$ 135,765	$ 162,422