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CONSOLIDATED BALANCE SHEETS - USD ($)
$ in Thousands
Sep. 30, 2024
Dec. 31, 2023
Current assets:    
Cash and cash equivalents $ 2,982 $ 3,378
Prepaid expenses and other current assets 1,931 4,066
Total current assets 4,913 7,444
Property and equipment, net 4 9
Right-of-use lease asset 51 93
Non-current deposits 413 1,259
Total assets 5,381 8,805
Current liabilities:    
Accounts payable 4,126 3,543
Accrued and other current liabilities 2,225 4,618
Total current liabilities 6,351 8,161
Lease liability 0 37
Total liabilities 6,351 8,198
Stockholders' equity (deficit):    
Common stock, $0.001 par value; 100,000,000 shares authorized at September 30, 2024 and December 31, 2023; 2,152,202 shares issued and outstanding at September 30, 2024 and 1,058,892 shares issued and outstanding at December 31, 2023 2 1
Additional paid-in capital 436,503 429,796
Accumulated other comprehensive loss (1,033) (908)
Accumulated deficit (436,442) (428,282)
Total stockholders' equity (deficit) (970) 607
Total liabilities and stockholders' equity (deficit) 5,381 8,805
6% Convertible Exchangeable Preferred Stock    
Stockholders' equity (deficit):    
Preferred stock, value 0 0
Series A Convertible Preferred Stock    
Stockholders' equity (deficit):    
Preferred stock, value 0 0
Series B Convertible Preferred Stock    
Stockholders' equity (deficit):    
Preferred stock, value $ 0 $ 0