Unaudited Condensed Consolidated Statements of Operations and Comprehensive Loss - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Operating expenses:
Research and development expense	$ 16,923	$ 10,423
General and administrative expense	7,423	8,374
Total operating expenses	24,346	18,797
Loss from operations	(24,346)	(18,797)
Other income (expense):
Interest income	85	98
Interest expense		(2)
Other income	7
Total other income (expense)	92	96
Consolidated net loss and comprehensive loss	$ (24,254)	$ (18,701)
Net loss per common share, basic and diluted	$ (0.65)	$ (0.56)
Weighted-average shares of common stock outstanding, basic and diluted	37,322,360	33,633,619