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Ofatumumab (Intravenous route)

Pronunciation:

oh-FAT-oo-moo-mab

Brand Names:

  • Arzerra

Dosage Forms:

  • Solution

Warnings:

Intravenous route(Solution)

Hepatitis B Virus (HBV) reactivation can occur in patients receiving CD20-directed cytolytic antibodies, including ofatumumab, in some cases resulting in fulminant hepatitis, hepatic failure, and death. Progressive Multifocal Leukoencephalopathy (PML) resulting in death can occur in patients receiving CD20-directed cytolytic antibodies, including ofatumumab .

Classifications:

Therapeutic—

Antineoplastic Agent

Pharmacologic—

Monoclonal Antibody

Uses of This Medicine:

Ofatumumab injection is used in combination with chlorambucil to treat a type of cancer of the white blood cells called chronic lymphocytic leukemia (CLL) in patients who have not received any treatments in the past. It is also used in combination with fludarabine and cyclophosphamide to treat patients with relapsed CLL. This medicine is also used in patients with CLL who have already been treated with other medicines (eg, alemtuzumab, fludarabine) that did not work well.

Ofatumumab interferes with the growth of cancer cells, which are eventually destroyed by the body. Since the growth of normal body cells may also be affected by ofatumumab, other unwanted effects will also occur. Some of these may be serious and must be reported to your doctor. Some unwanted effects, such as a skin rash, may not be serious but may cause concern. Some of the unwanted effects do not occur until months or years after the medicine is used.

Before you begin treatment with ofatumumab, you and your doctor should talk about the benefits this medicine will do as well as the risks of using it.

This medicine is to be given only by or under the direct supervision of your doctor.

Before Using This Medicine:

In deciding to use a medicine, the risks of taking the medicine must be weighed against the good it will do. This is a decision you and your doctor will make. For this medicine, the following should be considered:

Allergies—

Tell your doctor if you have ever had any unusual or allergic reaction to this medicine or any other medicines. Also tell your health care professional if you have any other types of allergies, such as to foods, dyes, preservatives, or animals. For non-prescription products, read the label or package ingredients carefully.

Children—

Appropriate studies have not been performed on the relationship of age to the effects of ofatumumab injection in the pediatric population. Safety and efficacy have not been established.

Older adults—

Appropriate studies performed to date have not demonstrated geriatric-specific problems that would limit the usefulness of ofatumumab injection in the elderly. However, elderly patients are more likely to have unwanted side effects (eg, neutropenia, pneumonia) which may require caution.

Breast-feeding—

There are no adequate studies in women for determining infant risk when using this medication during breastfeeding. Weigh the potential benefits against the potential risks before taking this medication while breastfeeding.

Other medicines—

Although certain medicines should not be used together at all, in other cases two different medicines may be used together even if an interaction might occur. In these cases, your doctor may want to change the dose, or other precautions may be necessary. When you are receiving this medicine, it is especially important that your healthcare professional know if you are taking any of the medicines listed below. The following interactions have been selected on the basis of their potential significance and are not necessarily all-inclusive.

Using this medicine with any of the following medicines is not recommended. Your doctor may decide not to treat you with this medication or change some of the other medicines you take.

  • Measles Virus Vaccine, Live
  • Mumps Virus Vaccine, Live
  • Rotavirus Vaccine, Live
  • Rubella Virus Vaccine, Live
  • Varicella Virus Vaccine

Using this medicine with any of the following medicines is usually not recommended, but may be required in some cases. If both medicines are prescribed together, your doctor may change the dose or how often you use one or both of the medicines.

  • Adenovirus Vaccine
  • Bacillus of Calmette and Guerin Vaccine, Live
  • Cholera Vaccine, Live
  • Influenza Virus Vaccine, Live
  • Poliovirus Vaccine, Live
  • Smallpox Vaccine
  • Typhoid Vaccine
  • Yellow Fever Vaccine

Other interactions—

Certain medicines should not be used at or around the time of eating food or eating certain types of food since interactions may occur. Using alcohol or tobacco with certain medicines may also cause interactions to occur. Discuss with your healthcare professional the use of your medicine with food, alcohol, or tobacco.

Other medical problems—

The presence of other medical problems may affect the use of this medicine. Make sure you tell your doctor if you have any other medical problems, especially:

  • Hepatitis B, or history of—Use with caution. May make this condition worse.
  • Infection—May decrease your body's ability to fight infection.

Proper Use of This Medicine:

You will receive this medicine while you are in a hospital or cancer treatment center. A nurse or other trained health professional will give you this medicine. This medicine is given through a needle placed in one of your veins.

Ofatumumab needs to be given slowly, so the needle will remain in place for at least an hour. You may also receive medicines to help prevent allergic reactions.

Precautions While Using This Medicine:

It is very important that your doctor check your progress at regular visits to make sure this medicine is working properly and to check for unwanted effects. Blood and urine tests may be needed to check for unwanted effects.

This medicine may cause chest pain, fever, chills, itching, hives, flushing of the face, rash, dizziness, fainting, or lightheadedness, troubled breathing, or swelling of the face, tongue, and throat within a few hours after you receive it. Check with your doctor or nurse right away if you have any of these symptoms.

This medicine may cause a serious type of reaction called tumor lysis syndrome. Your doctor may give you a medicine to help prevent this. Call your doctor right away if you have a decrease or change in urine amount, joint pain, stiffness, or swelling, lower back, side, or stomach pain, a rapid weight gain, swelling of the feet or lower legs, or unusual tiredness or weakness.

Ofatumumab can temporarily lower the number of white blood cells in your blood, increasing the chance of getting an infection. It can also lower the number of platelets, which are necessary for proper blood clotting. If this occurs, there are certain precautions you can take, especially when your blood count is low, to reduce the risk of infection or bleeding:

  • If you can, avoid people with infections. Check with your doctor immediately if you think you are getting an infection or if you get a fever or chills, cough or hoarseness, lower back or side pain, or painful or difficult urination.
  • Check with your doctor immediately if you notice any unusual bleeding or bruising, black, tarry stools, blood in the urine or stools, or pinpoint red spots on your skin.
  • Be careful when using a regular toothbrush, dental floss, or toothpick. Your medical doctor, dentist, or nurse may recommend other ways to clean your teeth and gums. Check with your medical doctor before having any dental work done.
  • Do not touch your eyes or the inside of your nose unless you have just washed your hands and have not touched anything else in the meantime.
  • Be careful not to cut yourself when you are using sharp objects such as a safety razor or fingernail or toenail cutters.
  • Avoid contact sports or other situations where bruising or injury could occur.

This medicine may increase your risk of developing a serious and rare brain infection called progressive multifocal leukoencephalopathy (PML). Check with your doctor right away if you are having more than one of these symptoms: vision changes, loss of coordination, clumsiness, memory loss, difficulty speaking or understanding what others say, and weakness in the legs.

Check with your doctor immediately if you have any symptoms of liver problems including skin and eyes turning yellow, dark brown-colored urine, right-sided abdominal or stomach pain, fever, or severe tiredness.

While you are being treated with ofatumumab, do not have any immunizations (vaccines) without your doctor's approval. Live virus vaccines should not be given with this medicine or soon after you receive it.

Side Effects of This Medicine:

Along with its needed effects, a medicine may cause some unwanted effects. Although not all of these side effects may occur, if they do occur they may need medical attention.

Check with your doctor or nurse immediately if any of the following side effects occur:

More common
Black, tarry stools
bloating or swelling of the face, arms, hands, lower legs, or feet
blurred vision
body aches or pain
chest pain
chills
confusion
cough or hoarseness
cough producing mucus
difficult or labored breathing
dizziness
dizziness, faintness, or lightheadedness when getting up suddenly from a lying or sitting position
ear congestion
facial swelling
fainting
fast heartbeat
feeling of warmth
headache
hives or welts, itching, or skin rash
increased sweating
lightheadedness
loss of voice
lower back or side pain
nasal congestion
nausea or vomiting
painful blisters on the trunk of the body
painful or difficult urination
pale skin
rapid weight gain
rapid, shallow breathing
redness of the face, neck, arms, and occasionally, upper chest
runny nose
sneezing
sore throat
tightness in the chest
tingling of the hands or feet
troubled breathing
troubled breathing with exertion
ulcers, sores, or white spots in the mouth
unusual bleeding or bruising
unusual tiredness or weakness
unusual weight gain or loss
weakness
Less common
Fast, pounding, or irregular heartbeat or pulse
nervousness
pounding in the ears
slow heartbeat
Incidence not known
Blistering, peeling, or loosening of the skin
dark urine
diarrhea
fluid-filled skin blisters
joint or muscle pain
light-colored stools
no blood pressure or pulse
red skin lesions, often with a purple center
red, irritated eyes
sensitivity to the sun
skin thinness
stopping of heart
unconsciousness
yellow eyes or skin

Some side effects may occur that usually do not need medical attention. These side effects may go away during treatment as your body adjusts to the medicine. Also, your health care professional may be able to tell you about ways to prevent or reduce some of these side effects. Check with your health care professional if any of the following side effects continue or are bothersome or if you have any questions about them:

More common
Back pain
muscle aches
redness of the skin
trouble sleeping
Less common
Bleeding, blistering, burning, coldness, discoloration of the skin, feeling of pressure, hives, infection, inflammation, itching, lumps, numbness, pain, rash, redness, scarring, soreness, stinging, swelling, tenderness, tingling, ulceration, or warmth at the injection site
muscle spasms
pain or tenderness around the eyes and cheekbones

Other side effects not listed may also occur in some patients. If you notice any other effects, check with your healthcare professional.

Call your doctor for medical advice about side effects. You may report side effects to the FDA at 1-800-FDA-1088.


Last Updated: 9/4/2017
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