PTx Assist

Supporting you during your treatment with BIZENGRI®

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If your doctor prescribes BIZENGRI, we’re here to help you get started on your medicine as soon as possible.

Our team is ready to assist you during this critical time and provide support as needed. By contacting PTx Assist, our case managers can

Determine your insurance coverage and costs for BIZENGRI

Identify financial assistance programs that may be available to you

Arrange for a temporary supply of medicine if there is a gap in coverage

Provide information about other support services and programs

Provide information about your treatment

To get started, call 1-877-353-8546
Monday-Friday, 9 AM to 5 PM ET.

PTx Assist services include medication education and other support services, such as co-pay assistance and other forms of patient assistance (no-cost medication). Partner Therapeutics’ co-pay assistance and patient assistance programs are subject to eligibility criteria and Partner Therapeutics, at its sole and absolute discretion, reserves the right to modify or discontinue patient support programs, including such programs provided through PTx Assist, at any time.

IMPORTANT SAFETY INFORMATION

What is the most important information I should know about BIZENGRI?

BIZENGRI may cause serious side effects, including:

  • Infusion-related, allergic and anaphylactic reactions. BIZENGRI may cause serious infusion-related and allergic reactions that can be life-threatening. Infusion-related reactions are also common during BIZENGRI treatment. Before each BIZENGRI infusion, your healthcare provider will give you medicines to help reduce your chance of getting infusion-related reactions. Your healthcare provider will monitor you for signs and symptoms during your infusion and for at least 1 hour after your first infusion and as needed. Tell your healthcare provider right away if you develop any of the following symptoms during or after your BIZENGRI infusion:
    • chills or shaking
    • nausea, vomiting, or diarrhea
    • fever
    • cough
    • sudden swelling of your face, tongue, throat, or troubled swallowing
    • throat tightness or discomfort
    • itching or rash
    • shortness of breath or wheezing
    • chest discomfort
    • feeling light-headed
    • dizziness
    • back or neck pain
    • feeling of numbness or tingling
  • Lung problems. BIZENGRI may cause serious lung problems that may be life-threatening. If you develop lung problems, your healthcare provider may treat you with corticosteroid medicines. Tell your healthcare provider right away if you develop any new or worsening symptoms of lung problems, including:
    • trouble breathing
    • shortness of breath
    • cough
    • fever
  • Heart problems that may affect your heart’s ability to pump blood. BIZENGRI may cause serious and life-threatening heart problems that may lead to death. Your healthcare provider will check your heart function before you start treatment with BIZENGRI and as needed during your treatment. Tell your healthcare provider right away if you develop any new or worsening symptoms of heart problems, including:
    • shortness of breath
    • coughing
    • tiredness
    • swelling of your feet, ankles or legs
    • irregular heartbeat
    • sudden weight gain
    • dizziness or feeling light-headed
    • loss of consciousness

Harm to your unborn baby. Tell your healthcare provider right away if you become pregnant or think you might be pregnant during treatment with BIZENGRI.

Before receiving BIZENGRI, tell your healthcare provider about all your medical conditions, including if you:

  • have lung or breathing problems other than your lung cancer.
  • have or have had any heart problems.
  • are breastfeeding or plan to breastfeed. It is not known if BIZENGRI passes into your breast milk. Do not breastfeed during treatment and for 2 months after your last dose of BIZENGRI.

Tell your healthcare provider about all the medicines you take, including prescription and over-the counter medicines, vitamins, and herbal supplements.

What are the possible side effects of BIZENGRI?

BIZENGRI may cause serious side effects, including:

  • See “What is the most important information I should know about BIZENGRI?”

The most common side effects of BIZENGRI include:

  • diarrhea
  • muscle or bone pain
  • tiredness
  • nausea
  • shortness of breath
  • rash
  • constipation
  • vomiting
  • stomach-area (abdominal) pain
  • swelling of your breast, face, ankles or legs

The most common severe abnormal blood test results with BIZENGRI include:

  • increased blood levels of liver enzymes and bilirubin
  • decreased red blood cell counts and platelet counts
  • decreased blood level of sodium, magnesium, and phosphate
  • increase in the time that it takes your blood to clot

These are not all of the possible side effects of BIZENGRI.

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

Please see full Prescribing Information, including BOXED WARNING.

What is BIZENGRI?

BIZENGRI is a prescription medicine used to treat adults who have: 

  • lung cancer called non-small cell lung cancer (NSCLC):
    • that has a neuregulin 1 (NRG1) gene fusion and cannot be removed by surgery or has spread to other parts of the body (advanced unresectable or metastatic), and
    • whose disease has worsened on or after prior cancer treatment.
  • pancreatic cancer called pancreatic adenocarcinoma:
    • that has a neuregulin 1 (NRG1) gene fusion and cannot be removed by surgery or has spread to other parts of the body (advanced unresectable or metastatic), and
    • whose disease has worsened on or after prior cancer treatment.

It is not known if BIZENGRI is safe and effective in children.

Please see full Prescribing Information, including BOXED WARNING.

Contact Us

For BIZENGRI product inquiries:
For BIZENGRI patient support:
  • 9 AM to 5 PM ET, Monday-Friday
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  • BIZENGRI® is a registered trademark of Merus N.V.
  • PARTNER THERAPEUTICS and are registered trademarks of Partner Therapeutics, Inc.
  • © 2025 Partner Therapeutics, Inc. US-BEN-2500011 03/25

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