Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Current assets
Cash	$ 176	$ 47
Other receivables	0	12
Prepaid expenses	2,132	1,460
Total current assets	2,308	1,519
Other assets	1,205	1,519
Total assets	3,513	3,038
Current liabilities
Accounts payable	4,372	1,927
Accrued expenses	1,523	2,245
Contingent upfront payment for license agreement	100	0
Notes payable, net of deferred financing costs	565	1,178
Convertible notes, current portion	4,179	0
Forward purchase agreement derivative liability	0	10,211
Liability classified warrants	2,307	587
Total current liabilities	13,046	16,148
Notes payable, net of deferred financing costs	4,143	7,652
Convertible notes, net of current portion	194
Total liabilities	17,383	23,800
Commitments and contingencies (see Note 13)
Stockholders' deficit
Preferred stock - $0.0001 par value, 10,000,000 and 10,000,000 shares authorized at December 31, 2023 and 2022, respectively; no shares issued and outstanding at December 31, 2023 and 2022, respectively	0	0
Common stock - $0.0001 par value per share; 500,000,000 and 100,000,000 shares authorized at December 31, 2023 and 2022, respectively; 47,615,285 and 12,699,668 shares issued and outstanding at December 31, 2023 and 2022, respectively	5	1
Additional paid-in capital	100,859	67,739
Accumulated deficit	(114,734)	(88,502)
Total stockholders' deficit	(13,870)	(20,762)
Total liabilities and stockholders' deficit	$ 3,513	$ 3,038