Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Current assets:
Cash and cash equivalents	$ 71,525	$ 68,148
Marketable debt securities	6,499	24,490
Prepaid expenses and other current assets	3,229	5,314
Total current assets	81,253	97,952
Property and equipment, net	1,135	1,040
Operating lease right-of-use assets	3,540	3,936
Restricted cash	1,339	1,339
Other assets	671	419
Total assets	87,938	104,686
Current liabilities:
Accounts payable	1,766	2,634
Accrued expenses	7,966	5,843
Operating lease liabilities, current	574	515
Total current liabilities	10,306	8,992
Operating lease liabilities	5,565	6,002
Total liabilities	15,871	14,994
Commitments and contingencies (See Note 9)
Stockholders’ equity:
Preferred stock; $0.001 par value per share; 5,000,000 shares authorized as of September 30, 2021 and December 31, 2020; no shares issued and outstanding as of September 30, 2021 and December 31, 2020
Common stock, $0.001 par value per share; 115,000,000 shares authorized as of September 30, 2021 and December 31, 2020; 17,710,450 and15,367,730 shares issued and outstanding as of September 30, 2021 and December 31, 2020, respectively	18	15
Additional paid-in capital	179,165	155,290
Accumulated deficit	(107,116)	(65,614)
Accumulated other comprehensive loss		1
Total stockholders’ equity	72,067	89,692
Total liabilities and stockholders’ equity	$ 87,938	$ 104,686