Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Jun. 30, 2022	Dec. 31, 2021
Current assets:
Cash and cash equivalents	$ 104,582	$ 142,745
Marketable securities	311,774	342,510
Accounts receivable	2,000	2,000
Restricted cash	567	567
Prepaid expenses and other current assets	17,162	4,516
Total current assets	436,085	492,338
Property and equipment, net	8,359	4,832
Operating lease right-of-use assets	520	1,254
Restricted cash, net of current portion	3,423	1,712
Other assets	12	19
Total assets	448,399	500,155
Current liabilities:
Accounts payable	1,693	3,226
Accrued expenses and other current liabilities	14,161	9,887
Operating lease liabilities	629	1,503
Deferred revenue	28,200	26,022
Income tax payable	1	52
Total current liabilities	44,684	40,690
Deferred revenue, net of current portion	105,011	114,718
Total liabilities	149,695	155,408
Commitments and contingencies (Note 8)
Preferred stock, $0.001 par value; 10,000,000 shares authorized; no shares issued and outstanding as of June 30, 2022 and December 31, 2021, respectively
Stockholders' equity:
Common stock, $0.001 par value; 200,000,000 shares authorized at June 30, 2022 and December 31, 2021; 87,709,499 and 87,598,184 shares issued and outstanding as of June 30, 2022 and December 31, 2021, respectively	88	88
Additional paid-in capital	514,365	506,760
Accumulated other comprehensive loss	(4,347)	(765)
Accumulated deficit	(211,402)	(161,336)
Total stockholders' equity	298,704	344,747
Total liabilities and stockholders' equity	$ 448,399	$ 500,155