Condensed Consolidated Balance Sheets (unaudited) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Current assets:
Cash and cash equivalents	$ 143,711	$ 157,531
Prepaid expenses and other current assets	1,725	3,537
Total current assets	145,436	161,068
Property and equipment, net	6,141	2,913
Restricted cash	1,208	1,208
Operating lease right of use asset	11,204	13,412
Other non-current assets	642	649
Total assets	164,631	179,250
Current liabilities:
Accounts payable	1,381	2,037
Accrued expenses and other current liabilities	8,189	8,765
Operating lease liability, current	1,458	1,072
Total current liabilities	11,028	11,874
Operating lease liability, net of current portion	14,285	14,589
Total liabilities	25,313	26,463
Commitments and contingencies
Stockholders’ equity:
Preferred stock, $0.0001 par value, 5,000 shares authorized at March 31, 2022 and December 31, 2021; no shares issued or outstanding as of March 31, 2022 or December 31, 2021	0	0
Common stock, $0.0001 par value, 200,000 shares authorized as of March 31, 2022 and December 31, 2021; 27,654 and 27,608 shares issued as of March 31, 2022 and December 31, 2021, respectively; 27,420 and 27,313 shares outstanding as of March 31, 2022 and December 31, 2021, respectively	2	2
Additional paid-in capital	407,554	405,680
Accumulated deficit	(268,238)	(252,895)
Total stockholders’ equity	139,318	152,787
Total liabilities and stockholders’ equity	$ 164,631	$ 179,250