STATEMENTS OF OPERATIONS - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Income Statement [Abstract]
Collaboration revenue	$ 5	$ 2,922
Operating expenses:
Research and development	16,279	25,018
General and administrative	12,219	13,142
Gain on lease modification and termination	(298)	(133)
Restructuring costs	1,269	0
Property and equipment and right-of-use assets impairment	4,803	0
Total operating expenses	34,272	38,027
Loss from operations	(34,267)	(35,105)
Other income (expense):
Interest expense	(1,921)	(3,154)
Other income , net	1,048	529
Other income (expense), net	(873)	(2,625)
Net loss	$ (35,140)	$ (37,730)
Earnings per share, Basic	$ (2.2)	$ (2.61)
Earnings per share, Diluted	$ (2.2)	$ (2.61)
Weighted average common shares outstanding, basic	15,995,323	14,475,354
Weighted average common shares outstanding, diluted	15,995,323	14,475,354