Myelofibrosis

Jakafi for Intermediate or High-risk Myelofibrosis


What is Jakafi?

Jakafi® (ruxolitinib) (JAK-ah-fye) is a prescription medicine available as a pill. Jakafi is used to treat adults with intermediate or high-risk myelofibrosis (MF).

Jakafi is the first medicine approved by the Food and Drug Administration (FDA) for the treatment of these patients.

Jakafi is not chemotherapy. It is a targeted treatment that can work to help reduce the size of an enlarged spleen. Learn more about spleen enlargement in MF



Is your MF considered intermediate or high-risk?

Find out how your MF risk level is determined and whether or not Jakafi may be a possible treatment option for you.


How does Jakafi work?

MF is a complex condition and researchers are still trying to discover its exact cause. Evidence suggests that proteins known as Janus kinases, or JAKs, are involved. JAK proteins send signals that affect the production of blood cells in the bone marrow (A). When JAKs send too many signals, they cause the body to make the wrong number of blood cells. This chain of events is called overactive JAK signaling (B). As a result of overactive signaling in MF, scar tissue can build up in the bone marrow, preventing it from making enough blood cells. The spleen partially takes over blood cell production, which may make the spleen become enlarged.

JAK signaling may become overactive in many ways. One way is by a JAK mutation. A mutation is a small change in the DNA that causes proteins to act differently than normally intended. All people with MF are believed to have overactive JAK signaling even if they do not have a JAK mutation.

Jakafi works by targeting JAKs, which control the production of blood cells. In doing so, Jakafi helps to reduce overactive JAK signaling to help keep the production of blood cells under
control (C).

Professional Perspective:

Jakafi: A Targeted Therapy

Discover how Jakafi works to reduce overactive JAK signaling.

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What are possible side effects of Jakafi?

Jakafi can cause serious side effects, including:

Low blood counts: Jakafi® (ruxolitinib) may cause your platelet, red blood cell, or white blood cell counts to be lowered. If you develop bleeding, stop taking Jakafi and call your healthcare provider. Your healthcare provider will perform blood tests to check your blood counts before you start Jakafi and regularly during your treatment. Your healthcare provider may change your dose of Jakafi or stop your treatment based on the results of your blood tests. Tell your healthcare provider right away if you develop or have worsening symptoms such as unusual bleeding, bruising, tiredness, shortness of breath, or a fever.

Infection: You may be at risk for developing a serious infection during treatment with Jakafi. Tell your healthcare provider if you develop any of the following symptoms of infection: chills, nausea, vomiting, aches, weakness, fever, painful skin rash or blisters.

Skin cancers: Some people who take Jakafi have developed certain types of non-melanoma skin cancers. Tell your healthcare provider if you develop any new or changing skin lesions.

Increases in cholesterol: You may have changes in your blood cholesterol levels. Your healthcare provider will do blood tests to check your cholesterol levels during your treatment with Jakafi.

The most common side effects of Jakafi include: for certain types of MF and PV – low platelet or red blood cell counts, bruising, dizziness, headache, and diarrhea; and for acute GVHD – low platelet, red or white blood cell counts, infections, and fluid retention.

These are not all the possible side effects of Jakafi. Ask your pharmacist or healthcare provider for more information. Tell your healthcare provider about any side effect that bothers you or that does not go away.

Before taking Jakafi, tell your healthcare provider about: all the medications, vitamins, and herbal supplements you are taking and all your medical conditions, including if you have an infection, have or had tuberculosis (TB) or have been in close contact with someone who has TB, have or had hepatitis B, have or had liver or kidney problems, are on dialysis, have high cholesterol or triglycerides, had skin cancer, or have any other medical condition. Take Jakafi exactly as your healthcare provider tells you. Do not change your dose or stop taking Jakafi without first talking to your healthcare provider.

Women should not take Jakafi while pregnant or planning to become pregnant. Do not breastfeed during treatment with Jakafi and for 2 weeks after the final dose.

Please see the Full Prescribing Information, which includes a more complete discussion of the risks associated with Jakafi.

Please see the Full Prescribing Information, which includes a more complete discussion of the risks associated with Jakafi.

Image of Sue – Watch her story and learn how her MF symptoms affected her before she started taking Jakafi.

Learn how the symptoms of MF affected Sue before she started taking Jakafi

Discover how Sue’s MF symptoms prompted her to talk to her Healthcare Professional about moving her treatment journey forward with Jakafi.

Watch Sue’s Story
Image of woman – Jakafi patient – talking on the phone, sitting on a park bench

Talk with a patient taking Jakafi

Register for the Incyte Mentor Program and connect with another patient taking Jakafi.

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Learn about the Ambassadors for Jakafi program.

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Connect With a Patient Like Sue

Connect With a
Patient Like Sue

Register for the Incyte Mentor Program and connect with another patient taking Jakafi.

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INDICATIONS AND USAGE

INDICATIONS AND USAGE

Jakafi is a prescription medicine used to treat adults with polycythemia vera who have already taken a medicine called hydroxyurea and it did not work well enough or they could not tolerate it.

Jakafi is used to treat adults with certain types of myelofibrosis.

Jakafi is also used to treat adults and children 12 years of age and older with acute graft-versus-host disease (GVHD) who have taken corticosteroids and they did not work well enough.

Important Safety Information

Jakafi can cause serious side effects, including:

Low blood counts: Jakafi® (ruxolitinib) may cause your platelet, red blood cell, or white blood cell counts to be lowered. If you develop bleeding, stop taking Jakafi and call your healthcare provider. Your healthcare provider will perform blood tests to check your blood counts before you start Jakafi and regularly during your treatment. Your healthcare provider may change your dose of Jakafi or stop your treatment based on the results of your blood tests. Tell your healthcare provider right away if you develop or have worsening symptoms such as unusual bleeding, bruising, tiredness, shortness of breath, or a fever.

Infection: You may be at risk for developing a serious infection during treatment with Jakafi. Tell your healthcare provider if you develop any of the following symptoms of infection: chills, nausea, vomiting, aches, weakness, fever, painful skin rash or blisters.

Skin cancers: Some people who take Jakafi have developed certain types of non-melanoma skin cancers. Tell your healthcare provider if you develop any new or changing skin lesions.

Increases in cholesterol: You may have changes in your blood cholesterol levels. Your healthcare provider will do blood tests to check your cholesterol levels during your treatment with Jakafi.

The most common side effects of Jakafi include: for certain types of MF and PV – low platelet or red blood cell counts, bruising, dizziness, headache, and diarrhea; and for acute GVHD – low platelet, red or white blood cell counts, infections, and fluid retention.

These are not all the possible side effects of Jakafi. Ask your pharmacist or healthcare provider for more information. Tell your healthcare provider about any side effect that bothers you or that does not go away.

Before taking Jakafi, tell your healthcare provider about: all the medications, vitamins, and herbal supplements you are taking and all your medical conditions, including if you have an infection, have or had tuberculosis (TB) or have been in close contact with someone who has TB, have or had hepatitis B, have or had liver or kidney problems, are on dialysis, have high cholesterol or triglycerides, had skin cancer, or have any other medical condition. Take Jakafi exactly as your healthcare provider tells you. Do not change your dose or stop taking Jakafi without first talking to your healthcare provider.

Women should not take Jakafi while pregnant or planning to become pregnant. Do not breastfeed during treatment with Jakafi and for 2 weeks after the final dose.

Please see the Full Prescribing Information, which includes a more complete discussion of the risks associated with Jakafi.

You are encouraged to report negative side effects of prescription drugs to the FDA. Visit www.fda.gov/medwatch, or call 1-800-FDA-1088.

You may also report side effects to Incyte Medical Information at 1-855-463-3463.