Condensed Consolidated Balance Sheets (Unaudited) - USD ($) $ in Thousands	Jun. 30, 2022	Dec. 31, 2021
Current assets:
Cash and cash equivalents	$ 135,980	$ 200,825
Marketable securities	155,858	175,746
Prepaid expenses and other current assets	6,096	5,821
Total current assets	297,934	382,392
Property and equipment, net	5,483	4,678
Right-of-use assets	34,294	36,282
Restricted cash and other assets	2,315	2,311
Total assets	340,026	425,663
Current liabilities:
Accounts payable	6,972	4,031
Accrued expenses and other current liabilities	13,161	20,799
Lease liabilities	5,489	3,893
Total current liabilities	25,622	28,723
Lease liabilities, net of current portion	27,345	28,743
Total liabilities	52,967	57,466
Stockholders’ equity
Preferred stock, $0.0001 par value; 10,000,000 shares authorized at June 30, 2022 and December 31, 2021	0	0
Common stock, $0.0001 par value; 200,000,000 shares authorized at June 30, 2022 and December 31, 2021; 51,741,334 and 51,607,522 shares issued and 51,734,361 and 51,569,381 shares outstanding at June 30, 2022 and December 31, 2021, respectively	6	6
Additional paid-in capital	604,570	596,934
Accumulated other comprehensive loss	(1,156)	(269)
Accumulated deficit	(316,361)	(228,474)
Total stockholders’ equity	287,059	368,197
Total liabilities and stockholders’ equity	$ 340,026	$ 425,663