WARNING

Kadcyla (generic name: ado-trastuzumab emtansine) is a medication used in the treatment of certain types of breast cancer. While it can be effective, like any medication, Kadcyla does come with potential risks and side effects. Here are some of the known risks associated with taking Kadcyla:

• Cardiac toxicity: Kadcyla can have an impact on the heart, potentially leading to heart problems such as decreased heart function or heart failure. It is important for patients to undergo regular cardiac monitoring while taking this medication.
• Liver toxicity: Kadcyla may cause liver damage or hepatitis, which can be severe in some cases. Regular monitoring of liver function is necessary during treatment.
• Bleeding problems: Kadcyla can increase the risk of bleeding or bruising. Patients should be cautious and report any unusual bleeding or bruising to their healthcare provider.
• Lung problems: In some cases, Kadcyla can cause lung complications, including inflammation of the lung tissue or lung scarring. Symptoms such as shortness of breath, cough, or fever should be promptly reported to a healthcare professional.
• Allergic reactions: Some individuals may experience allergic reactions to Kadcyla. Signs of an allergic reaction can include difficulty breathing, rash, itching, or swelling of the face, lips, or throat. Immediate medical attention should be sought if any of these symptoms occur.
• Pregnancy and breastfeeding: Kadcyla may harm a developing fetus, and its use during pregnancy is generally not recommended. It is also not known whether Kadcyla passes into breast milk, so breastfeeding is typically advised against during treatment.

It is crucial for patients to discuss these risks and potential side effects with their healthcare provider before starting Kadcyla. Your healthcare provider can provide more detailed information and guidance based on your individual circumstances.

Why is this medication prescribed?

Kadcyla (generic name: ado-trastuzumab emtansine) is a prescription medication used for the treatment of certain types of breast cancer. It is specifically indicated for patients with HER2-positive metastatic breast cancer who have previously received treatment with Herceptin (trastuzumab) and a taxane chemotherapy.

HER2-positive breast cancer is a type of breast cancer that tests positive for a protein called human epidermal growth factor receptor 2 (HER2). This protein promotes the growth of cancer cells. Kadcyla is an antibody-drug conjugate that combines trastuzumab (an antibody that targets HER2) with a chemotherapy drug called emtansine. This combination allows Kadcyla to deliver the chemotherapy directly to the cancer cells, which can help improve its effectiveness while reducing the exposure to healthy cells.

Kadcyla is typically prescribed when breast cancer has spread to other parts of the body (metastatic breast cancer) and when previous treatments, such as Herceptin and taxane chemotherapy, have been unsuccessful or are no longer effective. It is administered by intravenous infusion and is usually given once every three weeks.

How should this medicine be used?

Kadcyla (ado-trastuzumab emtansine) is administered through intravenous (IV) infusion by a healthcare professional. Here are some general guidelines on how Kadcyla is typically used:

• Administration: Kadcyla is given as an intravenous infusion, which means it is delivered directly into a vein. The infusion is usually performed in a hospital, clinic, or infusion center under the supervision of a healthcare professional.
• Treatment schedule: Kadcyla is typically administered once every three weeks. The specific dosage and treatment duration will be determined by the healthcare provider based on the individual’s condition and response to treatment.
• Pre-medication: Prior to the infusion, you may be given medications to help prevent potential infusion reactions. These medications may include antihistamines or corticosteroids. Follow your healthcare provider’s instructions regarding pre-medication.
• Duration of infusion: The infusion itself typically takes around 30 to 90 minutes, depending on the dosage and individual circumstances. The healthcare provider will monitor you during the infusion to watch for any potential side effects or reactions.
• Follow-up appointments: Regular follow-up appointments will be necessary to monitor your response to the treatment and assess any potential side effects. It is important to attend these appointments as scheduled.

Remember, the specific treatment regimen for Kadcyla can vary depending on individual factors and the healthcare provider’s judgment. Always follow the instructions provided by your healthcare professional and ask any questions or concerns you may have about the treatment process.

Other uses for this medicine

Kadcyla (ado-trastuzumab emtansine) is primarily used for the treatment of HER2-positive breast cancer that has spread to other parts of the body or has come back after prior treatments. However, it is important to note that Kadcyla is specifically indicated for this purpose and may not be approved or recommended for other uses. It is always best to consult with a healthcare professional to determine the appropriate use of any medication.

What special precautions should I follow?

Regarding special precautions for Kadcyla, here are some important considerations:

• HER2 testing: Kadcyla is specifically used for HER2-positive breast cancer. Prior to starting Kadcyla, patients should undergo HER2 testing to determine if the treatment is appropriate for their specific cancer subtype.
• Heart function: Kadcyla can have potential effects on the heart, such as decreased heart function or heart failure. Before starting treatment, patients should undergo cardiac evaluation, including assessment of left ventricular ejection fraction (LVEF), to ensure their heart is healthy enough for the medication.
• Liver function: Liver toxicity is a potential risk with Kadcyla. Regular monitoring of liver function, through blood tests, is necessary during treatment to detect any potential liver damage or hepatitis.
• Pregnancy and breastfeeding: Kadcyla may cause harm to a developing fetus, and its use during pregnancy is generally not recommended. Adequate contraception should be used by both men and women during treatment and for a certain period afterwards. Breastfeeding should also be avoided while taking Kadcyla.
• Allergic reactions: As with any medication, allergic reactions to Kadcyla are possible. Patients should be vigilant for signs of an allergic reaction and seek immediate medical attention if they experience symptoms such as difficulty breathing, rash, itching, or swelling.
• Other medications: It is important to inform your healthcare provider about all the medications you are taking, including prescription, over-the-counter drugs, and herbal supplements, as they may interact with Kadcyla and affect its effectiveness or increase the risk of side effects.

These are just some of the special precautions associated with Kadcyla. It is essential to have a thorough discussion with your healthcare provider to understand and address any specific precautions or considerations based on your individual medical history and circumstances.

What special dietary instructions should I follow?

Regarding special dietary instructions for Kadcyla, it’s generally recommended to follow a healthy, well-balanced diet unless your healthcare provider advises otherwise. It’s important to maintain proper nutrition and hydration during your treatment. However, some medications may interact with certain foods or beverages, so it’s always a good idea to discuss any dietary concerns or restrictions with your healthcare provider or pharmacist.

What should I do if I forget a dose?

If you happen to forget a dose of Kadcyla, you should contact your healthcare provider or pharmacist for guidance. They can provide you with specific instructions based on your treatment plan. It’s generally important to take medications as prescribed, but missing a dose does not necessarily mean you should take a double dose to make up for it. Your healthcare provider will be able to advise you on the best course of action in such situations.

What side effects can this medication cause?

Kadcyla (ado-trastuzumab emtansine) is a medication used for the treatment of certain types of breast cancer. Like any medication, it can cause side effects. The following are some potential side effects associated with Kadcyla:

• Fatigue: Feeling tired or experiencing a lack of energy is a common side effect of Kadcyla.
• Nausea and vomiting: Some individuals may experience nausea and vomiting while taking Kadcyla. Medications to manage these symptoms may be prescribed.
• Diarrhea: Kadcyla can cause diarrhea. It’s important to stay hydrated and notify your healthcare provider if this side effect is severe or persistent.
• Headache: Headaches, including migraines, can occur as a side effect of Kadcyla.
• Muscle and joint pain: Some individuals may experience muscle or joint pain while taking Kadcyla. Inform your healthcare provider if this becomes bothersome.
• Hair loss: Kadcyla may cause partial or complete hair loss. Hair usually grows back once treatment is completed, but it’s important to discuss this side effect with your healthcare provider.
• Decreased appetite: Some individuals may experience a decrease in appetite while taking Kadcyla. It’s important to maintain proper nutrition during treatment, so consult your healthcare provider for guidance if you’re having difficulty eating.
• Skin reactions: Kadcyla can cause skin-related side effects, such as rash or dry skin. Notify your healthcare provider if you experience any skin changes or reactions.
• Bleeding or bruising: Kadcyla may increase the risk of bleeding or bruising. Inform your healthcare provider if you notice unusual bleeding or bruising.
• Heart problems: In rare cases, Kadcyla may cause heart-related side effects. Notify your healthcare provider immediately if you experience symptoms such as shortness of breath, rapid heartbeat, or swelling of the ankles.

It’s important to remember that everyone’s experience with medication can be different. Some individuals may not experience any side effects, while others may experience several. Your healthcare provider will monitor you closely during treatment and provide guidance on managing any side effects that may arise.

What should I know about storage and disposal of this medication?

• Storage: Kadcyla is typically stored in a refrigerator between 2°C and 8°C (36°F and 46°F). It should be kept in its original packaging or vial until ready for use. Do not freeze or shake the medication. Protect it from light and keep it out of the reach of children.
• Disposal: Proper disposal of unused or expired Kadcyla is essential to prevent any potential harm. Follow the disposal instructions provided by your healthcare provider or pharmacist. It’s advisable not to dispose of medications in household trash or flush them down the toilet unless specifically instructed to do so.

In case of emergency/overdose

In case of emergency or overdose, it’s important to seek immediate medical attention or contact your local emergency services. You can also reach out to a poison control center for guidance. Be sure to provide them with as much information as possible, including the name of the medication (Kadcyla), the strength or dosage, and the amount taken.

What other information should I know?

• Inform your healthcare provider about any other medications (including prescription, over-the-counter, and herbal supplements) you are taking, as they may interact with Kadcyla.
• Inform your healthcare provider about any pre-existing medical conditions, especially heart or liver problems, as they may impact the use of Kadcyla.
• Attend all scheduled appointments and follow-up visits as recommended by your healthcare provider to monitor your response to the treatment and manage any potential side effects.
• Do not change the dose or stop taking Kadcyla without consulting your healthcare provider.
• If you are pregnant, planning to become pregnant, or breastfeeding, discuss the potential risks and benefits of Kadcyla with your healthcare provider.

Remember, this information is not exhaustive, and it’s essential to consult your healthcare provider or pharmacist for specific instructions and advice tailored to your individual situation. They can provide you with the most accurate and up-to-date information about Kadcyla and address any concerns you may have.