Condensed Consolidated Balance Sheets (Unaudited) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Current assets:
Cash and cash equivalents	$ 119,064	$ 136,627
Restricted cash, current	323	223
Prepaid expenses and other current assets	4,681	3,250
Total current assets	124,068	140,100
Restricted cash, non current	0	100
Other assets	217	237
Total assets	124,285	140,437
Current liabilities:
Accounts payable	5,110	2,950
Accrued expenses and other current liabilities	3,405	6,884
Term loan, current portion	4,159	5,000
Total current liabilities	12,674	14,834
Other liabilities	0	358
Term loan, net of current portion and discount	0	404
Total liabilities	12,674	15,596
Stockholders' equity (deficit):
Preferred stock, $0.0001 par value; 10,000,000 shares authorized; no shares issued and outstanding as of March 31, 2022 and December 31, 2021	0	0
Common stock, $0.0001 par value; 250,000,000 shares authorized; [[43,227,159]] and 43,208,159 shares issued and outstanding as of March 31, 2022 and December 31, 2021, respectively	4	4
Additional paid-in capital	311,528	309,527
Accumulated deficit	(199,921)	(184,690)
Total stockholders' equity	111,611	124,841
Total liabilities and stockholders' equity	$ 124,285	$ 140,437