CONDENSED CONSOLIDATED BALANCE SHEETS (UNAUDITED) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Current assets:
Cash and cash equivalents	$ 100,206	$ 201,661
Short-term investments	101,169	46,459
Interest receivable	172	50
Prepaid expenses and other current assets	4,894	5,178
Total current assets	206,441	253,348
Restricted cash	852	852
Other assets	979	1,102
Property and equipment, net	1,083	1,549
Operating lease right-of-use assets	21,735	29,743
Total assets	231,090	286,594
Current liabilities:
Accounts payable	4,473	8,361
Accrued expenses	10,083	20,152
Income tax payable	507	1,007
Operating lease liability, current	2,356	6,591
Amount due to related party	1,220	1,742
Total current liabilities	18,639	37,853
Operating lease liability, long term	20,776	23,475
Total liabilities	39,415	61,328
Commitments and contingencies (See Note 5, Leases)
Stockholders’ equity:
Preferred stock, $0.0001 par value: 10,000,000 shares authorized at March 31, 2022 and December 31, 2021, respectively; 0 shares issued and outstanding at March 31, 2022 and December 31, 2021, respectively
Common stock, $0.0001 par value: 150,000,000 shares authorized at March 31, 2022 and December 31, 2021, respectively; 65,364,572 and 65,170,332 shares issued at March 31, 2022 and December 31, 2021, respectively; and 64,264,127 and 63,565,886 shares outstanding at March 31, 2022 and December 31, 2021, respectively	7	7
Additional paid-in capital	532,946	522,479
Accumulated other comprehensive loss	(350)	(155)
Accumulated deficit	(340,928)	(297,065)
Total stockholders’ equity	191,675	225,266
Total liabilities and stockholders’ equity	$ 231,090	$ 286,594