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Revenue Recognition and Collaborative Arrangements (Tables) | 3 Months Ended
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Mar. 31, 2021
Revenue Recognition and Collaborative Arrangements |
Schedule of net revenue from collaborative arrangements | Net revenue recognized under our GSK Agreements was as follows: ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Three Months Ended March 31,
(In thousands) |  | 2021 |  | 2020
Royalties from a related party - RELVAR/BREO | ​ | $ | 56,390 | ​ | $ | 56,149
Royalties from a related party - ANORO | ​ |  | 10,500 | ​ |  | 9,850
Royalties from a related party - TRELEGY | ​ | ​ | 22,084 | ​ | ​ | 16,135
Total royalties from a related party | ​ |  | 88,974 | ​ |  | 82,134
Less: amortization of capitalized fees paid to a related party | ​ |  | (3,456) | ​ |  | (3,456)
Royalty revenue from GSK | ​ | $ | 85,518 | ​ | $ | 78,678

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