Dermatologic toxicities were reported in 89% of patients and were severe in 12% of patients receiving panitumumab monotherapy. Severe infusion reactions occurred in approximately 1% of patients. Although not reported with panitumumab, fatal infusion reactions have occurred with other monoclonal antibody products .
Commonly used brand name(s):
In the U.S.
Available Dosage Forms:
Therapeutic Class: Immunological Agent
Pharmacologic Class: Monoclonal Antibody
Panitumumab is used to treat patients with metastatic cancer (cancer that spreads to other parts of the body) of the colon or rectum. panitumumab is given to patients who have already received other cancer treatments. Panitumumab should only be used in patients who have had a KRAS gene mutation test. This test helps the doctor decide whether the medicine will treat their cancer.
Panitumumab 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 panitumumab, other effects will also occur. Some of these may be serious and must be reported to your doctor. Other effects, such as a skin rash, may not be serious but may cause concern. Some effects do not occur until months or years after the medicine is used.
Before you begin treatment with panitumumab, you and your doctor should talk about the good panitumumab will do as well as the risks of using it.
Panitumumab will only be given by or under the immediate supervision of your doctor.
panitumumab is available only with your doctor's prescription.
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 panitumumab, the following should be considered:
Tell your doctor if you have ever had any unusual or allergic reaction to panitumumab 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.
Appropriate studies have not been performed on the relationship of age to the effects of panitumumab in the pediatric population. Safety and efficacy have not been established.
Appropriate studies performed to date have not demonstrated geriatric-specific problems that would limit the usefulness of panitumumab in the elderly.
|All Trimesters||C||Animal studies have shown an adverse effect and there are no adequate studies in pregnant women OR no animal studies have been conducted and there are no adequate studies in pregnant women.|
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.
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. Tell your healthcare professional if you are taking any other prescription or nonprescription (over-the-counter [OTC]) medicine.
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.
The presence of other medical problems may affect the use of panitumumab. Make sure you tell your doctor if you have any other medical problems, especially:
You will receive panitumumab while you are in a hospital or cancer treatment center. A nurse or other trained health professional will give you panitumumab. panitumumab is given through a needle placed in one of your veins. Panitumumab needs to be given slowly, so the needle will remain in place for at least an hour.
panitumumab sometimes causes nausea and vomiting. However, it is very important that you continue to receive the medicine, even if you begin to feel ill. Ask your doctor for ways to lessen these effects.
It is very important that your doctor check your progress at regular visits to make sure panitumumab is working properly and to check for unwanted effects. Blood tests may be needed to check for unwanted effects.
Using panitumumab while you are pregnant can harm your unborn baby. Use an effective form of birth control to keep from getting pregnant during therapy and for 6 months after the last dose of panitumumab. If you think you have become pregnant while using the medicine, tell your doctor right away.
Some patients who use panitumumab develop serious skin problems that may lead to infections that can become life-threatening. Tell your doctor right away if you start having pimples; skin rash, itchiness, redness, swelling, dryness, peeling, or fissures; or nail changes.
Tell your doctor right away if you are having shortness of breath, chest tightness, or any type of breathing problem while being treated with panitumumab.
panitumumab may cause a rare but serious type of an allergic reaction called an infusion reaction. This can be life-threatening and require immediate medical attention. Tell your doctor right away if you start to have cough, difficulty with swallowing, dizziness, fast heartbeat, wheezing, trouble with breathing, chest tightness, swelling in your face or hands, fever, chills, itching or hives, or lightheadedness or faintness while you are receiving panitumumab.
panitumumab may cause unwanted side effects when used with other cancer medicines (e.g., bevacizumab, Avastin®). Check with your doctor right away if you have dehydration, diarrhea, rash, swelling or inflammation of the mouth while you are being treated with panitumumab.
Check with your doctor immediately if blurred vision, difficulty in reading, or any other change in vision occurs during or after your treatment. Your doctor may want you to have your eyes checked by an ophthalmologist (eye doctor).
panitumumab may cause severe kidney disease in patients who have severe diarrhea and dehydration. panitumumab may also increase your risk of having an electrolyte imbalance (e.g., low magnesium or calcium in the blood). Tell your doctor right away if you start having bloating or swelling of the face, arms, hands, lower legs, ankles, or feet; decreased urination; dizziness; headache; lethargy; muscle cramps or twitching; mood or mental changes; nausea; rapid weight gain; or unusual tiredness or weakness while being treated with panitumumab.
Avoid overexposing your skin to sunlight. Always use sunscreen or sun blocking lotions and wear protective clothing and hats.
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
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.
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