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Property and Equipment, Net
 9 Months Ended
Sep. 30, 2019
Property Plant And Equipment [Abstract]  
Property and Equipment, Net

5.

Property and Equipment, Net

Property and equipment, net consisted of the following:

 

 

 

September 30,

2019

 

 

December 31,

2018

 

Laboratory equipment

 

$

15,078

 

 

$

14,695

 

Computer equipment

 

 

2,874

 

 

 

2,864

 

Furniture and office equipment

 

 

1,033

 

 

 

1,033

 

Leasehold improvements

 

 

27,977

 

 

 

27,977

 

Construction in progress

 

 

140

 

 

 

26

 

 

 

 

47,102

 

 

 

46,595

 

Less: Accumulated depreciation and amortization

 

$

(25,942

)

 

$

(20,301

)

 

 

$

21,160

 

 

$

26,294

 

 

 

 

Depreciation and amortization expense was $1,876, $5,803, $1,974, and $5,869 for the three and nine months ended September 30, 2019 and 2018, respectively.