Should only be used as single agent chemotherapy and not in combination chemotherapy regimens outside clinical trials. Severe myelosuppression occurs when gemtuzumab is used at recommended doses. Severe hypersensitivity reactions (including anaphylaxis), and other infusion-related reactions which may include severe pulmonary events have occurred with therapy. Some of these hypersensitivity reactions have been fatal. Patients with high peripheral blast counts may be at greater risk for pulmonary events and tumor lysis syndrome; physicians should consider leukoreduction with hydroxyurea or leukapheresis to reduce the peripheral white count to below 30,000/ microliters prior to administration of gemtuzumab. Hepatotoxicity, including severe hepatic veno-occlusive disease (VOD), has been reported with therapy. Physicians should monitor their patients carefully for symptoms of hepatotoxicity, particularly VOD .
Gemtuzumab injection is a monoclonal antibody that is used to treat a type of cancer called acute myeloid leukemia (AML) in patients 60 years of age or older. It is used when other cancer treatments have not worked very well for these patients. Gemtuzumab interferes with the growth of leukemia cells, which are then destroyed by the body.
This medicine was to be administered only by or under the immediate supervision of your doctor.
Products containing gemtuzumab were withdrawn from the U.S. market by Pfizer Inc. on October 15, 2010.
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:
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.
Appropriate studies have not been performed on the relationship of age to the effects of gemtuzumab injection 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 gemtuzumab injection in the elderly.
|All Trimesters||D||Studies in pregnant women have demonstrated a risk to the fetus. However, the benefits of therapy in a life threatening situation or a serious disease, may outweigh the potential risk.|
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.
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:
Medicines used to treat cancer are very strong and can have many side effects. Before receiving this medicine, make sure you understand all the risks and benefits. It is important for you to work closely with your doctor while you are receiving this medicine.
A doctor or nurse will give you this medicine in a hospital or cancer treatment center. This medicine is given through a needle placed in one of your veins. The medicine must be injected slowly, so your IV tube will need to stay in place for about 2 hours.
This medicine consists of two doses, usually given 14 days apart. You may also receive a medicine to prevent allergic reactions (such as diphenhydramine, methylprednisolone, or Benadryl®) before you receive this medicine.
Your doctor may want you to drink extra fluids so you will pass more urine while you are using this medicine. This will keep your kidneys working well and help prevent kidney problems. Talk to your doctor if you have questions about this.
It is very important that your doctor check your progress at regular visits to make sure this medicine is working properly. Blood tests are needed to check for any unwanted effects.
Using this medicine while you are pregnant can harm your unborn baby. Use an effective form of birth control to keep from getting pregnant. If you think you have become pregnant while using the medicine, tell your doctor right away.
While you are being treated with gemtuzumab, and after you stop treatment with it, do not have any immunizations (vaccinations) without your doctor's approval. Gemtuzumab may lower your body's resistance and there is a chance you might get the infection the immunization is meant to prevent. In addition, other persons living in your household should not take oral polio vaccine since there is a chance they could pass the polio virus on to you. Also, avoid persons who have taken oral polio vaccine within the last several months. Do not get close to them, and do not stay in the same room with them for very long. If you cannot take these precautions, you should consider wearing a protective face mask that covers the nose and mouth.
Gemtuzumab 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:
This medicine may cause serious types of allergic reactions, including anaphylaxis. Anaphylaxis can be life-threatening and requires immediate medical attention. Call your doctor or nurse right away if you have blue lips, fingernails, or skin; difficult or fast breathing; dizziness, fainting, or lightheadedness; fever or chills; rash; trouble breathing or swallowing; or any swelling of your hands, face, or mouth after receiving this medicine.
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.
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.
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:
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:
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.