CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE LOSS - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE LOSS
Federal contract revenue	$ 1,513	$ 1,806
Collaboration revenue	12,673
Total revenue	14,186	1,806
Expenses:
Research and development	17,991	18,591
General and administrative	11,737	10,376
Cost of IP license fee	1,169
Total expenses	30,897	28,967
Loss from operations	(16,711)	(27,161)
Interest income	12	24
Interest expense	(1,692)
Other expense, net	(970)	(4)
Net loss and comprehensive loss	(19,361)	(27,141)
Net loss applicable to common shareholders	$ (19,361)	$ (27,141)
Per share information:
Net loss per share of common stock-basic	$ (0.52)	$ (0.74)
Net loss per share of common stock-diluted	$ (0.52)	$ (0.74)
Basic weighted average shares outstanding	36,890,568	36,599,701
Diluted weighted average shares outstanding	36,890,568	36,599,701