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Revenue (Tables)
 3 Months Ended
Mar. 31, 2018
Revenue  
Summary of revenue by type

 

 

Three Months Ended
March 31,

 

(in thousands)

 

2017

 

2018

 

Collaboration revenue

 

$

—

 

$
6,500

 

Research premium

 
1,505

 
770

 

Government grants

 
147

 
281

 

Grants from WWFF

 
26

 

—

 

 

 

 

 

 

 

Total 

 

$
1,678

 

$
7,551