Annual report pursuant to Section 13 and 15(d)

Revenue - Collaboration Agreement - The Astellas Collaboration Agreement (Details)

v3.20.4
Revenue - Collaboration Agreement - The Astellas Collaboration Agreement (Details)
 12 Months Ended
Jan. 13, 2020
USD ($)
item
Dec. 31, 2020
item
USD ($)
Collaboration and License Agreement    
Number of independent targets | item   2
Astellas Collaboration Agreement    
Collaboration and License Agreement    
Upfront payment received $ 50,000,000  
Number Of Co Development Target 3 3
Number of independent targets | item 2 2
Astellas Collaboration Agreement | Maximum    
Collaboration and License Agreement    
Potential milestone payments to be received $ 847,500,000  
Research funding the entity is entitled to receive per year on a per collaboration target basis 7,500,000  
Astellas Collaboration Agreement | Development milestone for each co-developed and co-commercialized product | Maximum    
Collaboration and License Agreement    
Potential milestone payments to be received 73,750,000  
Astellas Collaboration Agreement | Development milestone per product developed unilaterally | Maximum    
Collaboration and License Agreement    
Potential milestone payments to be received 147,500,000  
Astellas Collaboration Agreement | Sales milestone for products developed unilaterally | Maximum    
Collaboration and License Agreement    
Potential milestone payments to be received $ 110,000,000