CONDENSED STATEMENTS OF OPERATIONS AND COMPREHENSIVE LOSS - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Income Statement [Abstract]
Net revenue	$ 182	$ 214	$ 219	$ 645
Revenue from Contract with Customer, Product and Service [Extensible List]	Net revenue	Net revenue	Net revenue	Net revenue
Operating expenses:
Research and development	$ 5,725	$ 3,943	$ 8,464	$ 6,388
General and administrative	5,937	5,173	10,256	10,291
Cost of collaboration revenue	136	219	204	497
Total operating expenses	11,798	9,335	18,924	17,176
Loss from operations	(11,616)	(9,121)	(18,705)	(16,531)
Other income (expense):
Interest income	626	20	1,126	42
Interest expense	0	(1,066)	0	(2,094)
Other expense	0	(1)	0	(55)
Total other income (expense), net	626	(1,047)	1,126	(2,107)
Net loss	$ (10,990)	$ (10,168)	$ (17,579)	$ (18,638)
Net loss per share, basic	$ (0.24)	$ (0.37)	$ (0.4)	$ (0.68)
Net loss per share, diluted	$ (0.24)	$ (0.37)	$ (0.4)	$ (0.68)
Weighted average common shares outstanding, basic	45,916,867	27,519,053	44,478,116	27,519,053
Weighted average common shares outstanding, diluted	45,916,867	27,519,053	44,478,116	27,519,053
Net loss	$ (10,990)	$ (10,168)	$ (17,579)	$ (18,638)
Other comprehensive gain:
Unrealized loss on marketable securities	0	(2)	0	(35)
Comprehensive loss	$ (10,990)	$ (10,170)	$ (17,579)	$ (18,673)