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BALANCE SHEETS - USD ($)
$ in Thousands
Dec. 31, 2023
Dec. 31, 2022
Current assets:    
Cash and cash equivalents $ 8,554 $ 18,120
Other current assets 1,280 3,697
Total current assets 9,834 21,817
Property and equipment, net 906 1,324
Operating lease right-use-of assets 202 248
Goodwill 372 372
Intangible assets, net 42 94
Other assets 32 12
Total assets 11,388 23,867
Current liabilities:    
Accounts payable and accrued expenses 6,631 10,134
Operating lease liability 120 110
Term loan obligation, current 3,976 1,608
Total current liabilities 10,727 11,852
Noncurrent operating lease liability 85 141
Term loan obligation   3,786
Deferred grant liability 1,924 1,643
Total liabilities 12,736 17,422
Commitments and contingencies (Note 6)
Stockholders' equity (deficit):    
Preferred stock, $0.001 par value; 5,000,000 shares authorized; 1,952 shares issued and outstanding as of December 31, 2023 and 2022
Common stock, $0.001 par value; 100,000,000 shares authorized; 4,522,656 issued and 4,444,097 outstanding as of December 31, 2023, 2,240,092 shares issued and outstanding as of December 31, 2022, respectively 5 2
Treasury stock (at cost, 78,559 shares as of December 31, 2023) (126)  
Additional paid-in capital 479,274 473,628
Accumulated deficit (480,501) (467,185)
Total stockholders' equity (deficit) (1,348) 6,445
Total liabilities and stockholders' equity (deficit) $ 11,388 $ 23,867