Condensed Unaudited Consolidated Balance Sheets - USD ($) $ in Thousands	Jun. 30, 2022	Dec. 31, 2021
Current assets
Cash and cash equivalents	$ 141,113	$ 261,447
Available for sale securities	170,850	120,302
Prepaid expenses and other current assets	5,259	5,739
Total current assets	317,222	387,488
Property and equipment, net	514	348
Right-of-use asset, net	2,020	1,522
Total assets	319,756	389,358
Current liabilities
Accrued research and development expenses	16,577	14,403
Accounts payable and accrued expenses	8,178	12,856
Lease liability	1,724	952
Total current liabilities	26,479	28,211
Lease liability, non-current	331	619
Total liabilities	26,810	28,830
Stockholders' equity
Preferred stock—$0.001 par value, 5,000,000 shares authorized, no shares issued or outstanding	0	0
Common stock—$0.001 par value, 200,000,000 shares authorized, 116,874,198 and 115,277,012 shares issued and outstanding at June 30, 2022 and December 31, 2021, respectively	117	115
Additional paid-in capital	1,056,751	1,040,098
Accumulated deficit	(763,394)	(679,595)
Accumulated other comprehensive income	(528)	(90)
Total stockholders' equity	292,946	360,528
Total liabilities and stockholders' equity	$ 319,756	$ 389,358