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Property and Equipment, Net
 3 Months Ended
Mar. 31, 2022
Property, Plant and Equipment [Abstract]  
Property and Equipment, Net Property and Equipment, Net
Property and equipment, net consisted of the following (in thousands):
March 31,December 31,
20222021
Lab equipment$360 $370 
Office equipment272 315 
Furniture and fixtures63 65 
Leasehold improvements5 6 
700 756 
Less: accumulated depreciation(285)(358)
$415 $398 
Depreciation and amortization expense were less than $0.1 million for the three months ended March 31, 2022 and 2021 respectively.