STATEMENTS OF OPERATIONS - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
Income Statement [Abstract]
Revenue	$ 10	$ 5
Operating expenses:
Research and development	362	16,279
General and administrative	4,460	12,219
Gain on lease modification	0	(298)
Restructuring costs	0	1,269
Property and equipment and right-of-use asset impairment	0	4,803
Total operating expenses	4,822	34,272
Loss from operations	(4,812)	(34,267)
Other income (expense):
Interest expense	0	(1,921)
Other income , net	133	1,048
Other income (expense), net	133	(873)
Net loss	$ (4,679)	$ (35,140)
Loss per share, Basic	$ (2.92)	$ (21.97)
Loss per share, Diluted	$ (2.92)	$ (21.97)
Weighted average common shares outstanding, basic	1,601,252	1,599,532
Weighted average common shares outstanding, diluted	1,601,252	1,599,532