Condensed Consolidated Statements of Operations and Comprehensive Loss (Unaudited) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Revenues	$ 0	$ 0	$ 0	$ 0
Operating expenses:
Research and development	4,090	3,888	8,342	9,576
General and administrative	2,064	2,492	4,457	5,129
Depreciation and amortization	31	31	63	61
Total operating expenses	6,185	6,411	12,862	14,766
Loss from operations	(6,185)	(6,411)	(12,862)	(14,766)
Other income:
Gain from change in fair value of warrant liability	1,696	36	3,151	75
Other income, net	11	9	22	17
Interest income, net	159	390	400	783
Net loss	$ (4,319)	$ (5,976)	$ (9,289)	$ (13,891)
Net loss per common share - basic and diluted (in dollars per share)	$ (1.7)	$ (3.02)	$ (3.71)	$ (7.13)
Weighted average common shares outstanding, basic and diluted (in shares)	2,543,244	1,979,258	2,504,709	1,948,135
Net loss	$ (4,319)	$ (5,976)	$ (9,289)	$ (13,891)
Other comprehensive loss:
Foreign currency translation	8	(1)	(1)	(5)
Comprehensive loss	$ (4,311)	$ (5,977)	$ (9,290)	$ (13,896)