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CONDENSED BALANCE SHEETS (UNAUDITED) - USD ($)
$ in Thousands
Mar. 31, 2022
Dec. 31, 2021
Current assets:    
Cash and cash equivalents $ 21,239 $ 18,400
Other current assets 865 1,324
Total current assets 22,104 19,724
Property and equipment, net 1,558 1,477
Operating lease right-use-of assets 316 341
Goodwill 372 372
Intangible assets, net 150 51
Other assets 16 16
Total assets 24,516 21,981
Current liabilities:    
Accounts payable and accrued expenses 3,203 4,151
Operating lease liability 110 111
Term loan obligation, current 1,608 1,608
Total current liabilities 4,921 5,870
Noncurrent operating lease liability 235 269
Term loan obligation 4,718 5,005
Warrant liability   1
Total liabilities 9,874 11,145
Commitments and contingencies (Note 7)
Stockholders’ equity:    
Preferred stock, $0.001 par value; 5,000,000 shares authorized; 1,952 shares issued and outstanding at March 31, 2022 and December 31, 2021
Common stock, $0.001 par value; 100,000,000 shares authorized; 22,197,635 and 15,510,025 issued and outstanding at March 31, 2022 and December 31, 2021, respectively 22 16
Additional paid-in capital 465,646 457,730
Accumulated deficit (451,026) (446,910)
Total stockholders’ equity 14,642 10,836
Total liabilities and stockholders’ equity $ 24,516 $ 21,981