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Condensed Consolidated Statements of Operations and Comprehensive Loss (Unaudited) - USD ($)
$ in Thousands
 3 Months Ended
Mar. 31, 2022
Mar. 31, 2021
Operating Expenses:    
Research and development $ 8,276 $ 4,185
General and administrative 4,535 1,742
Total operating expenses 12,811 5,927
Total operating loss (12,811) (5,927)
Other income (expense):    
Change in fair value of warrant liability (44) 4
Interest income (expense), including amortization and accretion income 25 (1)
Loss on disposal of assets (5) (3)
Total other expense (24)  
Net loss (12,835) (5,927)
Net loss attributable to common stockholders - basic and diluted (Note 13) $ (12,835) $ (8,258)
Net loss per share attributable to common stockholders—basic and diluted $ (0.44) $ (20.62)
Weighted average common stock outstanding- basic and diluted 29,213,632 400,450
Comprehensive loss:    
Net loss attributable to common stockholders $ (12,835) $ (8,258)
Other comprehensive items:    
Unrealized loss on marketable securities (5)  
Total other comprehensive loss (5)  
Total comprehensive loss $ (12,840) $ (8,258)