the Roslin Institute in 1997.

Role in disease

Deficiency of factor IX causes the blood clotting disorder haemophilia B. Named after Stephen Christmas (the first documented patient), it is also known as Christmas disease.Recombinant
* nonacog alfa (brand name Benefix)
* nonacog gamma (brand name Rixubis)
* albutrepenonacog alfa (brand name Idelvion)
* eftrenonacog alfa (brand name Alprolix)

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