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Consolidated Balance Sheets - USD ($)
Dec. 31, 2024
Dec. 31, 2023
Current assets:    
Cash and cash equivalents $ 1,701,000 $ 5,439,000
Marketable securities 2,276,000 7,631,000
Funds receivable from New Jersey net operating loss 1,184,000
Prepaid expenses and other current assets 199,000 302,000
Total current assets 4,176,000 14,556,000
Property and equipment, net 108,000 127,000
Right of use asset, net 618,000 697,000
Patent and trademark rights, net 2,594,000 2,313,000
Other assets 1,112,000 1,688,000
Total assets 8,608,000 19,381,000
Current liabilities:    
Accounts payable 6,383,000 6,443,000
Accrued expenses 606,000 1,986,000
Current portion of operating lease liability 239,000 223,000
Current portion of note payable, net 2,307,000
Total current liabilities 9,535,000 8,652,000
Long-term liability:    
Operating lease liability 395,000 495,000
Total liabilities 9,930,000 9,147,000
Commitments and contingencies (Notes 7, 8, 10, 16)
Stockholders’ (deficit) equity:    
Common Stock, $0.001 par value, authorized shares - 350,000,000; issued and outstanding shares 65,526,320 and 49,102,484 as of December 31, 2024 and 2023, respectively 66,000 49,000
Additional paid-in capital 425,440,000 419,004,000
Accumulated deficit (426,828,000) (409,508,000)
Total stockholders’ (deficit) equity (1,322,000) 10,234,000
Total liabilities and stockholders’ (deficit) equity 8,608,000 19,381,000
Series A Junior Participating Preferred Stock [Member]    
Stockholders’ (deficit) equity:    
Preferred Stock, Value
Series B Convertible Preferred Stock [Member]    
Stockholders’ (deficit) equity:    
Preferred Stock, Value $ 689,000