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License Agreements - Zai Lab (Details) - Zai Lab Ltd - Maximum
$ in Millions
1 Months Ended
Jul. 31, 2019
USD ($)
Development and Regulatory Milestones  
Upfront and immediate milestone payment to be received under license agreement $ 22.5
Commercialization Milestones  
Upfront and immediate milestone payment to be received under license agreement $ 37.5