Condensed Consolidated Statements of Operations and Comprehensive Loss (Unaudited) - 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	$ 12,110	$ 4,960	$ 29,896	$ 20,815
General and administrative	6,750	5,021	20,897	12,520
Total operating expenses	18,860	9,981	50,793	33,335
Loss from operations	(18,860)	(9,981)	(50,793)	(33,335)
Other income (expenses):
Interest income	525	12	892	42
Interest expense	0	0	0	(10)
Other income (expense)	98	105	311	(13)
Total other income, net	623	117	1,203	19
Loss from continuing operations	(18,237)	(9,864)	(49,590)	(33,316)
Loss on investment in joint venture	133	332	861	1,282
Net loss	$ (18,370)	$ (10,196)	$ (50,451)	$ (34,598)
Net loss per common share, basic	$ (0.60)	$ (0.37)	$ (1.65)	$ (1.44)
Net loss per common share, diluted	$ (0.60)	$ (0.37)	$ (1.65)	$ (1.44)
Weighted average number of common shares outstanding, basic	30,777,797	27,527,770	30,562,723	24,011,862
Weighted average number of common shares outstanding, diluted	30,777,797	27,527,770	30,562,723	24,011,862
Other comprehensive loss:
Net unrealized loss on marketable securities	$ 63	$ 0	$ 434	$ 0
Other comprehensive loss	(63)	0	(434)	0
Comprehensive loss	$ (18,433)	$ (10,196)	$ (50,885)	$ (34,598)