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PROPERTY AND EQUIPMENT
3 Months Ended
Mar. 31, 2020
Property, Plant and Equipment [Abstract]  
PROPERTY AND EQUIPMENT
PROPERTY AND EQUIPMENT

Property and equipment, net, consisted of the following:
 
 
 
 
 
March 31,
2020
 
December 31,
2019
 
(in thousands)
Lab equipment
$
2,507

 
$
2,507

Leasehold improvements
741

 
741

Computer hardware and software
403

 
457

Furniture and fixtures
166

 
166

Property and equipment, gross
3,817

 
3,871

Less: accumulated depreciation and amortization
(3,374
)
 
(3,348
)
Property and equipment, net
$
443

 
$
523



During the three months ended March 31, 2020 and 2019, depreciation and amortization expense was $0.1 million. Depreciation and amortization expense is recorded primarily in research and development expense on the condensed consolidated statements of operations and comprehensive loss.