Condensed 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
Operating expenses:
Research and development	$ 5,644	$ 9,102	$ 11,450	$ 18,076
General and administrative	3,043	3,441	6,124	6,573
Total operating expenses	8,687	12,543	17,574	24,649
Loss from operations	(8,687)	(12,543)	(17,574)	(24,649)
Other income (expense), net	20	(66)	(36)	(48)
Net loss	$ (8,667)	$ (12,609)	$ (17,610)	$ (24,697)
Net loss per share, basic	$ (0.47)	$ (0.79)	$ (0.96)	$ (1.54)
Net loss per share, diluted	$ (0.47)	$ (0.79)	$ (0.96)	$ (1.54)
Weighted average common shares outstanding, basic	18,338,853	15,996,133	18,338,853	15,996,133
Weighted average common shares outstanding, diluted	18,338,853	15,996,133	18,338,853	15,996,133
Comprehensive loss:
Net loss	$ (8,667)	$ (12,609)	$ (17,610)	$ (24,697)
Other comprehensive loss:
Unrealized loss on marketable debt securities	(57)		(57)
Total other comprehensive loss	(57)		(57)
Total comprehensive loss	$ (8,724)	$ (12,609)	$ (17,667)	$ (24,697)