Pronunciation: tra-ZEE-mera
Generic name: trastuzumab-qyyp
Dosage form: injection for intravenous infusion
Drug class: HER2 inhibitors

Medically reviewed by Carmen Pope, BPharm. Last updated on Jan 16, 2024.

What is Trazimera?

Trazimera (trastuzumab-qyyp) is a biosimilar to Herceptin that may be used to treat certain types of HER2+ (Human Epidermal Growth Factor Receptor 2-Positive) cancers, following an FDA-approved test for trastuzumab. It is given by IV infusion (a slow infusion into a vein in your arm) over 30 to 90 minutes by a healthcare provider and is approved for :

• Early-stage HER2+ breast cancer that has spread to the lymph nodes, OR has not yet spread to the lymph nodes but is estrogen receptor/progesterone receptor (ER/PR)-negative or with one high-risk feature such as tumor size >2 cm, patient age <35 years, or tumor grade 2 or 3. Trazimera can be given:
  • As part of a treatment course that includes the chemotherapy drugs doxorubicin, cyclophosphamide, and either paclitaxel or docetaxel
  • With the chemotherapy drugs docetaxel and carboplatin
  • Alone, after treatment with multiple other therapies, including an anthracycline (doxorubicin) based therapy (a type of chemotherapy).
• HER2+ metastatic breast cancer, as first-line treatment in combination with the chemotherapy drug paclitaxel
• HER2+ metastatic breast cancer, as the sole treatment for patients who have already received one or more chemotherapy courses for metastatic disease
• HER2+ metastatic cancer of the stomach or gastroesophageal junction in combination with chemotherapy (cisplatin and either capecitabine or 5-fluorouracil), in patients who have not received prior treatment for their metastatic disease.

Trazimera is called a targeted treatment because it targets cancers that have large amounts of receptor proteins called HER2. HER2 is thought to send signals to cells telling them to grow and divide rapidly, causing tumors to form. By targeting and attaching to these receptors, Trazimera is thought to inhibit the growth and cell division of human tumor cells that overexpress HER2 and also tell the body’s immune system to destroy the cell. Normal cells also have HER2, but less of it, so Trazimera can affect normal cells, causing side effects.

Trazimera was approved as a biosimilar to Herceptin on March 11, 2019. A biosimilar means it is approved based on data demonstrating that it is highly similar to an FDA-approved biological product, known as a reference product (in this case, Herceptin), and that there are no clinically meaningful differences.

Warnings

Trazimera can cause heart failure, especially if you have heart disease or if you are also receiving certain other cancer medicines (such as daunorubicin, doxorubicin, epirubicin, or idarubicin). Your healthcare provider will assess your heart function before treatment and monitor you throughout.

Serious and fatal infusion reactions and pulmonary toxicity have been reported, including bronchospasm, anaphylaxis, angioedema, interstitial pneumonitis, or acute respiratory distress syndrome. Reactions usually occur during or immediately following the infusion. Your healthcare provider will monitor you during the infusion.

Trazimera can cause harm to an unborn baby and result in oligohydramnios (a reduction in the levels of amniotic fluid), and incomplete lung development, which can be fatal. Women of childbearing potential should use effective contraception.

May exacerbate chemotherapy-induced neutropenia (low levels of neutrophils [a type of white blood cell] caused by cancer treatments).

Before taking

Tell your doctor if you have experienced an infusion reaction or hypersensitivity reaction to trastuzumab, or its biosimilars such as Herceptin, Herzuma, Kanjinti, Ontruzant, or Trazimera, or any of the inactive ingredients in the vial.

Trazimera is only administered to eligible patients identified as having HER2 protein overexpression and HER2 gene amplification using an FDA-approved test specific for breast or gastric cancers by laboratories with demonstrated proficiency.

Before taking Trazimera, tell your doctor if you:

• have allergies
• have preexisting heart disease, a heart attack, congestive heart failure, or other heart problems
• have problems with your lungs or with breathing
• have low white blood cell counts
• have had chemotherapy treatment before
• are pregnant, may become pregnant, or intend to become pregnant
• are breastfeeding.

Pregnancy

You may need to have a negative pregnancy test before starting this treatment. Do not use Trazimera if you are pregnant.

Trazimera may result in the death of an unborn baby or birth defects. Females with childbearing potential should use effective contraception while receiving Trazimera and for 7 months after the last dose. If you inadvertently become pregnant while receiving trastuzumab or within 7 months after your last dose, tell your doctor right away.

Breastfeeding

It is unknown if Trazimera passes into human milk. It may not be safe to breastfeed while using this medicine and for up to 7 months after your last dose. Ask your doctor about any risks.

How is Trazimera administered?

Trazimera is administered as an intravenous infusion by a healthcare provider.

• Trazimera is usually given once every week or every 1 to 3 weeks. Follow your doctor's dosing instructions very carefully.
• This medicine must be given slowly, and the infusion can take 30 to 90 minutes depending on the stage of the cycle and type of cancer you have.
• Do not administer as an IV push or bolus. Do not mix with other drugs. Trazimera should not be substituted for or with ado-trastuzumab emtansine.

You may need frequent medical tests to be sure this medicine is not causing harmful effects. Your cancer treatments may be delayed based on the results.

• Your heart function may need to be checked before and during treatment with Trazimera. You may also need heart function testing every 6 months for 2 years after your last dose of this medicine.

Trazimera is usually given for 52 weeks, or until your body no longer responds to the medication.

Related/similar drugs

Verzenio, Trodelvy, tamoxifen, letrozole, Keytruda, Arimidex, pembrolizumab, capecitabine, paclitaxel, Femara

What happens if I miss a dose?

Call your doctor for instructions if you miss an appointment for your Trazimera.

What happens if I overdose?

Seek emergency medical attention or call the Poison Help line at 1-800-222-1222.

What are the side effects of Trazimera?

Get emergency medical help if you have signs of an allergic or administration-related reaction such as dizziness, nausea, chills, fever, vomiting, diarrhea, hives, pain, headache, swelling under the skin, breathing problems, shortness of breath, or chest pain. Some side effects may occur during the injection, or in the days afterward. Tell your healthcare provider right away, even if these symptoms occur a few days later.

Trazimera may cause serious side effects. Call your doctor at once if you have:

• new onset or worsening shortness of breath or cough
• a light-headed feeling, like you might pass out or loss of consciousness
• severe headache, blurred vision, pounding in your neck or ears
• blisters or ulcers in your mouth, red or swollen gums, trouble swallowing
• heart problems--pounding heartbeats, palpitations, dizziness, swelling in your lower legs, rapid weight gain, feeling short of breath
• low blood cell counts--fever, chills, tiredness, skin sores, easy bruising, unusual bleeding, pale skin, cold hands and feet, feeling light-headed or
• signs of tumor cell breakdown--tiredness, weakness, muscle cramps, nausea, vomiting, diarrhea, fast or slow heart rate, tingling in your hands and feet or around your mouth.
• swelling of the ankles/legs or the face, or weight gain of more than 5 pounds in 24 hours.

Common side effects of Trazimera may include:

• heart problems
• nausea, diarrhea, weight loss
• headache
• trouble sleeping, feeling tired
• low blood cell counts
• rash
• fever, chills, cough, or other signs of infection
• mouth sores
• altered sense of taste or
• cold symptoms such as stuffy nose, sinus pain, and sore throat.

This is not a complete list of side effects and others may occur. Call your doctor for medical advice about side effects. You may report side effects to the FDA at 1-800-FDA-1088.

What should I avoid while receiving Trazimera?

Follow your doctor's instructions about any restrictions on food, beverages, or activity.

What other drugs will affect Trazimera?

Other drugs may affect Trazimera, including prescription and over-the-counter medicines, vitamins, and herbal products. Tell your doctor about all your current medicines and any medicine you start or stop using.

Trazimera can have long-lasting effects on your heart, especially if you receive other cancer medicines. For at least 7 months after your last dose of trastuzumab, tell any doctor who treats you that you have used Trazimera.

Ingredients

Active: trastuzumab 150mg in a single-dose vial; trastuzumab 420mg in a multiple-dose vial.

Multiple-dose vial: reconstitute with 20 mL Water for Injection (1.1% benzyl alcohol) to yield a 21 mg/mL multiple-dose solution that delivers 20 mL (420 mg trastuzumab-qyyp).

Store reconstituted solution in refrigerator at 2°C to 8°C (36°F to 46°F). Do not freeze. Do not shake after reconstitution. Discard unused reconstituted solution after 28 days.

Storage

Refrigerate at 2°C to 8°C (36°F to 46°F). The unopened vial can be stored up to 30°C (86°F) for a single period of up to 3 months but not exceeding the expiry date.

Manufacturer

Pfizer.

Trazimera Biosimilars

Biosimilar and interchangeable products are biological products that are highly similar to and have no clinically meaningful differences from the reference product.

Reference products

These are biological products that have already been approved by the FDA, against which biosimilar products are compared. There is 1 for Trazimera.

Herceptin biosimilar products

Biosimilar products can only be dispensed in place of the reference product if the healthcare provider specifically prescribes the biosimilar product by name.

Pharmacy laws for biosimilar prescribing may vary by state

Popular FAQ

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Further information

Always consult your healthcare provider to ensure the information displayed on this page applies to your personal circumstances.

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