Before starting PALYNZIQ, people participating in the study had an average Phe level of 20 mg/dL. In a study following 118 people with PKU:
*21% of participants (25/118) stopped taking PALYNZIQ before reaching a Phe level below or equal to 6 mg/dL. Of those, 10 participants stopped treatment due to side effects. A total of 3% of participants (4/118) did not reach a Phe level below or equal to 6 mg/dL before completing the study.
†24% of participants (28/118) stopped taking PALYNZIQ before they reached a Phe level below or equal to 2 mg/dL. Additionally, 11 participants did not reach a Phe level below or equal to 2 mg/dL before completing the study.
Reaching a Phe level below 0.5 mg/dL is called HypoPhe. If your Phe level decreases below 0.5 mg/dL while taking PALYNZIQ, your doctor may reduce your dose and/or modify your diet to increase it.
Hear firsthand from real adults with PKU about the process of lowering Phe levels.
Most people did NOT consume a Phe-restricted diet while taking PALYNZIQ.
A Phe-restricted diet is when people get more than 75% of their protein from medical food/formula.
A separate analysis of the 250 people taking PALYNZIQ during a clinical study found that*:
were not on a Phe-restricted diet before starting PALYNZIQ.
were not on a Phe-restricted diet at their last assessment at the end of the study.
*40% of patients (101/250) were taking no medical protein before starting. About 91% (92/101) of them still did not take any medical protein at their last assessment.
43% (108/250) were taking some form of medical protein before starting. About 48% (52/108) of them still did so at their last assessment.
16% (41/250) got more than 75% of their protein from medical food/formula before starting. About 29% (12/41) still did so at their last assessment.
What is the most important information I should know about PALYNZIQ?
PALYNZIQ can cause a severe allergic reaction (anaphylaxis) that may be life–threatening and may happen any time during treatment. Severe allergic reactions are a serious and common side effect of PALYNZIQ.
You will get your first injection under the supervision of a healthcare provider prepared to manage a severe allergic reaction. You will be watched for at least 1 hour after your injection for a severe allergic reaction.
Stop PALYNZIQ and get emergency medical care right away if you have any of the following signs or symptoms of a severe allergic reaction during treatment with PALYNZIQ: fainting (passing out); dizziness or lightheadedness; sudden confusion; trouble breathing or wheezing; chest discomfort or chest tightness; fast heart rate; swelling of your face, lips, eyes, or tongue; throat swelling or tightness; flushed or red skin; skin rash, itching, or raised bumps on skin; nausea, vomiting, or diarrhea; losing control of urine or stools.
PALYNZIQ REMS: PALYNZIQ is only available through a restricted program called the PALYNZIQ REMS (Risk Evaluation and Mitigation Strategy). Before you can receive PALYNZIQ, you must:
What should I tell my healthcare provider BEFORE starting PALYNZIQ?
Tell your healthcare provider about all the medicines you take, including prescription and over-the-counter medicines, vitamins, and herbal supplements.
Tell your healthcare provider about all of your medical conditions, including if you:
What are the possible side effects of PALYNZIQ?
PALYNZIQ may cause serious side effects, including:
Injection site infections. Serious infections at the injection site have happened in people during treatment with PALYNZIQ. Some of these injection site infections required hospitalization, surgery, treatment with antibiotics given through the vein, or stopping treatment with PALYNZIQ. Change (rotate) your injection site and check your injection site for redness, swelling, or tenderness before each injection. Tell your healthcare provider right away if you develop signs or symptoms of an infection at your injection site that are new, do not go away, or get worse, including: pain, redness, swelling, or tenderness; the area feels hard; fluid or pus; blisters; a dark scab; an open wound.
Do not inject PALYNZIQ into the affected area until the infection has cleared.
The most common side effects of PALYNZIQ include: injection site reactions: redness, itching, pain, bruising, rash, swelling, tenderness; joint pain; allergic reactions; headache; skin reactions that spread and last at least 14 days, such as itching, rash, redness; nausea; stomach pain; vomiting; cough; mouth and throat pain; itching; diarrhea; stuffy nose; feeling very tired; dizziness; anxiety; low levels of Phe in your blood.
The most common side effects of PALYNZIQ in people 12 years to less than 18 years of age include: injection site reactions: redness, itching, pain, bruising, rash, swelling, tenderness; joint pain; headache; fever; allergic reactions; dizziness; nausea; vomiting; feeling very tired; pain in your arms or legs.
These are not all the possible side effects of PALYNZIQ. Call your healthcare provider for medical advice about side effects.
You may report side effects to FDA at 1-800-FDA-1088 or www.fda.gov/medwatch.
Blood Phe testing and diet
Missed dose
Please see full Prescribing Information, including Important Warning, and the Medication Guide.
COM-ET-1199 02/26
What is the most important information I should know about PALYNZIQ?
PALYNZIQ can cause a severe allergic reaction (anaphylaxis) that may be life–threatening and may happen any time during treatment. Severe allergic reactions are a serious and common side effect of PALYNZIQ.
What is PALYNZIQ?
PALYNZIQ® (Pal-lin-zeek) (pegvaliase-pqpz) is a prescription medication used to lower blood levels of phenylalanine (Phe) in people 12 years and older with PKU (phenylketonuria) who have uncontrolled blood Phe levels above 600 micromol/L (10 mg/dL) on their current treatment. You should discuss the potential benefits and risks of PALYNZIQ with your healthcare provider.