Hemophilia B and factor IX deficiency

People with hemophilia B have a deficiency in clotting factor IX. Hemophilia B is sometimes called Christmas disease after Stephen Christmas, the first patient described with this disease. It is the second most common form of hemophilia, occurring in about 1 in 20,000 to 50,000 people.

Treating Hemophilia B

It's important to manage hemophilia B by taking steps to stop bleeds as soon as they start. There are several therapies available to treat hemophilia B.

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GET STARTED WITH THE PFIZER TRIAL PRESCRIPTION PROGRAM

Get a one-time, 1-month supply up to 20,000 IU of Pfizer factor product at no cost to you.* Talk to your health care provider to learn more. For first-time use by commercially insured patients only.

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