CONDENSED STATEMENTS OF OPERATIONS AND COMPREHENSIVE LOSS - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Net revenue	$ 37	$ 431
Revenue from Contract with Customer, Product and Service [Extensible List]	Net revenue	Net revenue
Operating expenses:
Research and development	$ 2,739	$ 2,445
General and administrative	4,319	5,118
Cost of Collaboration Revenue	68	278
Total operating expenses	7,126	7,841
Loss from operations	(7,089)	(7,410)
Other income (expense):
Interest income	500	22
Interest expense	0	(1,082)
Total other income (expense), net	500	(1,060)
Net loss	$ (6,589)	$ (8,470)
Net loss per share, basic	$ (0.15)	$ (0.31)
Net loss per share, diluted	$ (0.15)	$ (0.31)
Weighted-average common shares outstanding, basic	43,023,379	27,519,053
Weighted-average common shares outstanding, diluted	43,023,379	27,519,053
Net loss	$ (6,589)	$ (8,470)
Other comprehensive loss:
Unrealized loss on marketable securities	0	(33)
Comprehensive loss	$ (6,589)	$ (8,503)