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Accrued Expenses and Other Current Liabilities
6 Months Ended
Jun. 30, 2020
Payables and Accruals [Abstract]  
Accrued Expenses and Other Current Liabilities Accrued Expenses and Other Current Liabilities
Accrued expenses consisted of the following:
As of June 30, 2020As of December 31, 2019
Accrued development milestones$26,881  $12,000  
Accrued employee compensation and benefits32,195  3,521  
Accrued clinical trial costs13,238  16,476  
Accrued commercialization and other professional fees13,713  15,408  
Other accrued expenses and current liabilities32,096  4,697  
 $118,123  $52,102