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CONDENSED STATEMENTS OF OPERATIONS (UNAUDITED) - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended
Sep. 30, 2022
Sep. 30, 2021
Sep. 30, 2022
Sep. 30, 2021
Operating expenses:        
Research and development $ 2,945 $ 1,491 $ 7,560 $ 3,724
General and administrative 2,222 1,990 6,653 4,811
Loss on disposal of property and equipment   18   18
Total operating expenses 5,167 3,499 14,213 8,553
Operating loss (5,094) (3,499) (14,140) (8,553)
Other income (expense):        
Interest income 48 5 74 13
Interest expense (173) (232) (552) (708)
Change in fair value of liability instruments   2 1 4
Total other expense (125) (225) (477) (691)
Net loss $ (5,219) $ (3,724) $ (14,617) $ (9,244)
Net loss per share, basic $ (0.19) $ (0.28) $ (0.61) $ (0.84)
Net loss per share, diluted $ (0.19) $ (0.28) $ (0.61) $ (0.84)
Basic weighted average shares used in calculating net loss per share attributable to common stockholders 27,441,654 13,264,230 23,789,195 10,961,284
Diluted weighted average shares used in calculating net loss per share attributable to common stockholders 27,441,654 13,264,230 23,789,195 10,961,284
Grant [Member]        
Revenue $ 73   $ 73