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CONDENSED STATEMENTS OF OPERATIONS (UNAUDITED) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2022
Jun. 30, 2021
Jun. 30, 2022
Jun. 30, 2021
Operating expenses:        
Research and development $ 2,831 $ 1,106 $ 4,615 $ 2,233
General and administrative 2,289 1,469 4,431 2,821
Total operating expenses 5,120 2,575 9,046 5,054
Operating loss (5,120) (2,575) (9,046) (5,054)
Other income (expense):        
Interest income 19 4 26 8
Interest expense (181) (229) (379) (476)
Change in fair value of liability instruments     1 2
Total other expense (162) (225) (352) (466)
Net loss $ (5,282) $ (2,800) $ (9,398) $ (5,520)
Net loss per share, basic $ (0.24) $ (0.25) $ (0.43) $ (0.56)
Net loss per share, diluted $ (0.24) $ (0.25) $ (0.43) $ (0.56)
Basic weighted average shares used in calculating net loss per share attributable to common stockholders 22,254,823 11,296,816 21,919,956 9,790,726
Diluted weighted average shares used in calculating net loss per share attributable to common stockholders 22,254,823 11,296,816 21,919,956 9,790,726