Condensed Consolidated Balance Sheets - USD ($)	Sep. 30, 2024	Dec. 31, 2023
Current assets:
Cash and cash equivalents	$ 5,410,000	$ 20,821,000
Tax incentive and other receivables	2,121,000	18,000
Prepaid expenses and other current assets	1,392,000	1,821,000
Total current assets	8,923,000	22,660,000
Property and equipment, net	12,000	22,000
Other non-current assets	1,000	1,000
Total assets	8,936,000	22,683,000
Current liabilities:
Accounts payable	5,472,000	5,619,000
Accrued expenses and other current liabilities	2,650,000	3,375,000
Deferred revenue	226,000	226,000
Total current liabilities	8,348,000	9,220,000
Deferred revenue, non-current	2,621,000	2,791,000
Total liabilities	10,969,000	12,011,000
Commitments and contingencies
Stockholders' (deficit) equity:
Series C Preferred stock, $0.01 par value, 5,000,000 shares authorized, 7,440 shares issued and outstanding at September 30, 2024 and no shares issued and outstanding at December 31, 2023
Common stock, $0.01 par value, 250,000,000 shares authorized, 3,025,554 and 840,251 shares issued and outstanding at September 30, 2024 and December 31, 2023, respectively	30,000	9,000
Additional paid in capital	617,202,000	493,317,000
Accumulated deficit	(619,232,000)	(482,631,000)
Accumulated other comprehensive loss	(33,000)	(23,000)
Total stockholders' (deficit) equity	(2,033,000)	10,672,000
Total liabilities and stockholders' (deficit) equity	$ 8,936,000	$ 22,683,000