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CONDENSED BALANCE SHEETS (UNAUDITED) - USD ($)
$ in Thousands
Mar. 31, 2023
Dec. 31, 2022
Current assets:    
Cash and cash equivalents $ 12,723 $ 18,120
Other current assets 906 3,697
Total current assets 13,629 21,817
Property and equipment, net 1,276 1,324
Operating lease right-use-of assets 270 248
Goodwill 372 372
Intangible assets, net 79 94
Other assets 12 12
Total assets 15,638 23,867
Current liabilities:    
Accounts payable and accrued expenses 6,495 10,134
Operating lease liability 107 110
Term loan obligation, current 5,057 1,608
Deferred grant liability, current 1,137  
Total current liabilities 12,796 11,852
Term loan obligation   3,786
Noncurrent operating lease liability 166 141
Deferred grant liability   1,643
Total liabilities 12,962 17,422
Commitments and contingencies (Note 8)
Stockholders’ equity:    
Preferred stock, $0.001 par value; 5,000,000 shares authorized; 1,953 and 1,952 shares issued and outstanding at March 31, 2023 and December 31, 2022, respectively
Common stock, $0.001 par value; 100,000,000 shares authorized; 36,123,833 and 33,601,373 issued and outstanding at March 31, 2023 and December 31, 2022, respectively 36 34
Additional paid-in capital 474,630 473,596
Accumulated deficit (471,990) (467,185)
Total stockholders’ equity 2,676 6,445
Total liabilities and stockholders’ equity $ 15,638 $ 23,867