Welcome

Emicizumab-kxwh is an FDA approved prescription medicine used for routine prophylaxis to prevent or reduce the frequency of bleeding episodes in adults and children with hemophilia A with factor 8 (factor VIII or FVIII) inhibitors. As of March 2018, more than 600 people with hemophilia A with and without FVIII inhibitors have received emicizumab-kxwh globally through clinical trials, expanded access, compassionate use, and following the FDA approval of emicizumab-kxwh (often referred to as postmarketing).

Please note that emicizumab-kxwh is only approved for use in people with hemophilia A with FVIII inhibitors.

The US Package Insert (Prescribing Information [PI] or label) provides FDA-approved information about prescription medications and is the primary source of information about the known and potential risks of emicizumab-kxwh. The PI for emicizumab-kxwh includes a Medication Guide which contains FDA-approved information that can help people avoid serious side effects.

Click on a button below for safety data and information on thrombotic microangiopathy, serious thrombotic events (blood clots), or fatalities:

For more details about the most frequently occurring side effects with emicizumab-kxwh, click below:

Our commitment through this website is to provide verified safety reports for thrombotic microangiopathy, serious thrombotic events (blood clots), and fatalities from ongoing emicizumab-kxwh clinical trials, expanded access, compassionate use, and experience after FDA approval. These verified safety reports contain sufficient details to assess the case and meet the reporting requirements for health authorities. Genentech is committed to updating this site at least quarterly.

The information on this site is not meant to take the place of important conversations with your healthcare provider.

Requirements after FDA approval for emicizumab-kxwh are on the US Food and Drug Administration website and can be accessed by clicking here.

Your healthcare provider should be the primary source of information about your medical condition and the safe and effective use of any medicine, including emicizumab-kxwh.

You may contact our Medical Communications department with questions specific to this site: (800) 821-8590, Monday- Friday, 5:00A – 5:00P PST.

Important Safety Information & Indication

Indication

HEMLIBRA® is a prescription medicine used for routine prophylaxis to prevent or reduce the frequency of bleeding episodes in adults and children with hemophilia A with factor VIII inhibitors.

What is the most important information I should know about HEMLIBRA?

HEMLIBRA increases the potential for your blood to clot. Discontinue prophylactic use of bypassing agents the day before starting HEMLIBRA prophylaxis. Carefully follow your healthcare provider’s instructions regarding when to use an on-demand bypassing agent, and the dose and schedule you should use. HEMLIBRA may cause the following serious side effects when used with aPCC (FEIBA®), including:

  • Thrombotic microangiopathy (TMA). This is a condition involving blood clots and injury to small blood vessels that may cause harm to your kidneys, brain, and other organs. Get medical help right away if you have any of the following signs or symptoms during or after treatment with HEMLIBRA:

    • Confusion

    • Weakness

    • Swelling of arms and legs

    • Yellowing of skin and eyes

    • Stomach (abdomen) or back pain

    • Nausea or vomiting

    • Feeling sick

    • Decreased urination

  • Blood clots (thrombotic events). Blood clots may form in blood vessels in your arm, leg, lung, or head. Get medical help right away if you have any of these signs or symptoms of blood clots during or after treatment with HEMLIBRA: 

    • Swelling in arms or legs

    • Pain or redness in your arms or legs

    • Shortness of breath

    • Chest pain or tightness

    • Fast heart rate

    • Cough up blood

    • Feel faint

    • Headache

    • Numbness in your face

    • Eye pain or swelling

    • Trouble seeing

If aPCC (FEIBA®) is needed, talk to your healthcare provider in case you feel you need more than 100 U/kg of aPCC (FEIBA®) total.

You may report side effects to the FDA at (800) FDA-1088 or www.fda.gov/medwatch.

You may also report side effects to Genentech at (888) 835-2555, 24 hrs/day, 7 days/week.