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PROPERTY AND EQUIPMENT
9 Months Ended
Sep. 30, 2020
Property, Plant and Equipment [Abstract]  
PROPERTY AND EQUIPMENT PROPERTY AND EQUIPMENT
Property and equipment, net, consisted of the following:
September 30,
2020
December 31,
2019
(in thousands)
Lab equipment$2,529 $2,507 
Leasehold improvements741 741 
Computer hardware and software405 457 
Furniture and fixtures166 166 
Property and equipment, gross3,841 3,871 
Less: accumulated depreciation and amortization(3,471)(3,348)
Property and equipment, net$370 $523 

During the three months ended September 30, 2020 and 2019, depreciation and amortization expense was $0.1 million. During the nine months ended September 30, 2020 and 2019, depreciation and amortization expense was $0.2 million. Depreciation and amortization expense is recorded primarily in research and development expense on the condensed consolidated statements of operations and comprehensive loss.