CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE LOSS - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Operating expenses
Research and development	$ 15,622	$ 6,281	$ 32,544	$ 28,006
General and administrative	7,497	4,508	28,174	15,450
Total operating expenses	23,119	10,789	60,718	43,456
Loss from operations	(23,119)	(10,789)	(60,718)	(43,456)
Other income (expense), net	1,197	(18)	1,306	(380)
Loss before income taxes	(21,922)	(10,807)	(59,412)	(43,836)
Income tax benefit	0	(52)	0	(52)
Net loss	(21,922)	(10,755)	(59,412)	(43,784)
Other comprehensive income (loss)
Foreign currency translation adjustment	20	0	30	0
Comprehensive loss	$ (21,902)	$ (10,755)	$ (59,382)	$ (43,784)
Shares used in calculating net loss per common share - basic (in shares)	216,591,011	198,790,980	212,755,746	193,599,525
Shares used in calculating net loss per common share - diluted (in shares)	216,591,011	198,790,980	212,755,746	193,599,525
Net loss per share of common stock - basic (in USD per share)	$ (0.10)	$ (0.05)	$ (0.28)	$ (0.23)
Net loss per share of common stock - diluted (in USD per share)	$ (0.10)	$ (0.05)	$ (0.28)	$ (0.23)