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PROPERTY AND EQUIPMENT
 12 Months Ended
Dec. 31, 2022
Property, Plant and Equipment [Abstract]  
PROPERTY AND EQUIPMENT PROPERTY AND EQUIPMENT
The following table sets forth the composition of property and equipment, net as of December 31, 2022 and 2021 (in thousands):
December 31,
20222021
Lab equipment$94 $569 
Furniture and fixtures— 16 
Computer equipment7 99 
Software4 32 
Leasehold improvements— 293 
     Property and equipment, gross105 1,009 
     Less: accumulated depreciation(105)(966)
          Total Property and Equipment, Net$— $43 
Depreciation expense was de minimis, $0.1 million and $0.1 million for the years ended December 31, 2022, 2021 and 2020, respectively.