CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE LOSS - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE LOSS
Federal contract revenue	$ 1,790	$ 1,905	$ 3,303	$ 3,711
Collaboration revenue			12,673
Total revenue	1,790	1,905	15,976	3,711
Expenses:
Research and development	21,495	18,562	39,486	37,153
General and administrative	17,061	6,828	28,798	17,204
Cost of IP license fee			1,169
Total expenses	38,556	25,390	69,453	54,357
Loss from operations	(36,766)	(23,485)	(53,477)	(50,646)
Interest income	84	16	96	40
Interest expense	(2,656)	(351)	(4,348)	(351)
Other expense, net	(95)	(3)	(1,065)	(7)
Net loss and comprehensive loss	(39,433)	(23,823)	(58,794)	(50,964)
Net loss applicable to common shareholders	$ (39,433)	$ (23,823)	$ (58,794)	$ (50,964)
Per share information:
Net loss per share of common stock-basic	$ (1.06)	$ (0.65)	$ (1.59)	$ (1.39)
Net loss per share of common stock-diluted	$ (1.06)	$ (0.65)	$ (1.59)	$ (1.39)
Basic weighted average shares outstanding	37,155,917	36,659,615	37,023,976	36,629,823
Diluted weighted average shares outstanding	37,155,917	36,659,615	37,023,976	36,629,823