Quarterly report pursuant to Section 13 or 15(d)

Summary of Significant Accounting Policies - Related parties (Details)

v3.10.0.1
Summary of Significant Accounting Policies - Related parties (Details) - USD ($)
3 Months Ended 6 Months Ended
Jun. 30, 2018
Jun. 30, 2017
Jun. 30, 2018
Jun. 30, 2017
Related parties        
Research and Development Expense $ 26,624,000 $ 19,591,000 $ 52,016,000 $ 38,206,000
Immunocore        
Related parties        
Research and Development Expense   $ 178,000   $ 780,000