CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Current assets:
Cash and cash equivalents	$ 106,092	$ 201,661
Short-term investments	127,703	46,459
Interest receivable	157	50
Prepaid expenses and other current assets	7,100	5,178
Prepaid expenses to related party	2,000
Total current assets	243,052	253,348
Restricted cash	852	852
Other assets	612	1,102
Property and equipment, net	930	1,549
Operating lease right-of-use assets	31,633	29,743
Total assets	277,079	286,594
Current liabilities:
Accounts payable	3,004	8,361
Accrued expenses	13,985	20,152
Income tax payable	128	1,007
Operating lease liability, current	7,165	6,591
Amount due to related party	56	1,742
Total current liabilities	24,338	37,853
Operating lease liability, long term	28,222	23,475
Total liabilities	52,560	61,328
Stockholders' equity:
Preferred stock, $0.0001 par value: 10,000,000 shares authorized at December 31, 2022 and December 31, 2021, respectively; 0 shares issued and outstanding at December 31, 2022 and December 31, 2021, respectively;
Common stock, $0.0001 par value: 150,000,000 shares authorized at December 31, 2022 and December 31, 2021, respectively; 93,268,069 and 65,170,332 shares issued at December 31, 2022 and December 31, 2021, respectively; and 93,093,243 and 63,565,886 shares outstanding at December 31, 2022 and December 31, 2021, respectively	9	7
Additional paid-in capital	690,753	522,479
Accumulated other comprehensive loss	(468)	(155)
Accumulated deficit	(465,775)	(297,065)
Total stockholders' equity	224,519	225,266
Total liabilities and stockholders' equity	$ 277,079	$ 286,594