CONDENSED CONSOLIDATED BALANCE SHEETS (Unaudited) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Current assets:
Cash	$ 8,407	$ 11,781
Restricted cash	50	50
Prepaid expenses and other current assets	871	615
Total current assets	9,328	12,446
Right of use asset	66	161
Property and equipment, net	142	183
Other assets	3	24
Total assets	9,539	12,814
Current liabilities:
Accounts payable	173	779
Accrued expenses	2,083	1,025
Lease liability	70	135
Total current liabilities	2,326	1,939
Lease liability, net of current portion	0	35
Total liabilities	2,326	1,974
Commitments and contingencies (Note 2)
Series D Preferred Stock, $0.0001 par value; 0 and 1 shares authorized, issued and outstanding at September 30, 2023 and December 31, 2022, respectively	0	2
Stockholders’ equity:
Common stock, $0.0001 par value, 100,000,000 shares authorized; 2,307,385 and 1,139,024 shares issued and outstanding at September 30, 2023 and December 31, 2022, respectively	0	0
Additional paid-in capital	144,524	139,218
Accumulated deficit	(137,311)	(128,380)
Total stockholders’ equity	7,213	10,838
Total liabilities, preferred stock and stockholders’ equity	$ 9,539	$ 12,814