NYVEPRIA™ (pegfilgrastim-apgf) 12 CLINICAL PHARMACOLOGY

(pegfilgrastim-apgf)

Prescribing Information

12 CLINICAL PHARMACOLOGY

12.1 Mechanism of Action

Pegfilgrastim products are colony-stimulating factors that act on hematopoietic cells by binding to specific cell surface receptors, thereby stimulating proliferation, differentiation, commitment, and end cell functional activation.

12.2 Pharmacodynamics

Animal data and clinical data in humans suggest a correlation between pegfilgrastim products' exposure and the duration of severe neutropenia as a predictor of efficacy. Selection of the dosing regimen of NYVEPRIA is based on reducing the duration of severe neutropenia.

12.3 Pharmacokinetics

The pharmacokinetics of pegfilgrastim was studied in 379 patients with cancer. The pharmacokinetics of pegfilgrastim was nonlinear, and clearance decreased with increases in dose. Neutrophil receptor binding is an important component of the clearance of pegfilgrastim, and serum clearance is directly related to the number of neutrophils. In addition to numbers of neutrophils, body weight appeared to be a factor. Patients with higher body weights experienced higher systemic exposure to pegfilgrastim after receiving a dose normalized for body weight. A large variability in the pharmacokinetics of pegfilgrastim was observed. The half-life of pegfilgrastim ranged from 15 to 80 hours after subcutaneous injection.

Specific Populations

No gender-related differences were observed in the pharmacokinetics of pegfilgrastim, and no differences were observed in the pharmacokinetics of geriatric patients (≥65 years of age) compared with younger patients (<65 years of age) [see Use in Specific Populations (8.5)].

Renal Impairment

In a study of 30 subjects with varying degrees of renal dysfunction, including end stage renal disease, renal dysfunction had no effect on the pharmacokinetics of pegfilgrastim.

Pediatric Patients with Cancer Receiving Myelosuppressive Chemotherapy

The pharmacokinetics and safety of pegfilgrastim were studied in 37 pediatric patients with sarcoma in Study 4 [see Clinical Studies (14)]. The mean (± standard deviation [SD]) systemic exposure (AUC0–inf) of pegfilgrastim after subcutaneous administration at 100 mcg/kg was 47.9 (± 22.5) mcg∙hr/mL in the youngest age group (0 to 5 years, n = 11), 22.0 (± 13.1) mcg∙hr/mL in the 6 to 11 years age group (n = 10), and 29.3 (± 23.2) mcg∙hr/mL in the 12 to 21 years age group (n = 13). The terminal elimination half-lives of the corresponding age groups were 30.1 (± 38.2) hours, 20.2 (± 11.3) hours, and 21.2 (± 16.0) hours, respectively.

12.6 Immunogenicity

The observed incidence of anti-drug antibodies is highly dependent on the sensitivity and specificity of the assay. Differences in assay methods preclude meaningful comparisons of the incidence of anti-drug antibodies in the studies described below with the incidence of anti-drug antibodies in other studies, including those of pegfilgrastim or of other pegfilgrastim products.

Binding antibodies to pegfilgrastim were detected using a BIAcore assay. The approximate limit of detection for this assay is 500 ng/mL. Pre-existing binding antibodies were detected in approximately 6% (51/849) of patients with metastatic breast cancer. Four of 521 pegfilgrastim-treated subjects who were negative at baseline developed binding antibodies to pegfilgrastim following treatment. None of these 4 patients had evidence of neutralizing antibodies detected using a cell-based bioassay.

Medication Guide

MEDICATION GUIDE

This Patient Information has been approved by the U.S. Food and Drug Administration. Revised: May 2026
Patient Information NYVEPRIA™ (nigh-VEP ree-ah) (pegfilgrastim-apgf) injection Single-Dose Prefilled Syringe
What is NYVEPRIA? NYVEPRIA is a prescription medicine that is used in adults and children aged newborn and older to help reduce the chance of infection due to a low white blood cell count, in people with certain types of cancer (non-myeloid), who receive anti-cancer medicines (chemotherapy) that can cause fever and low blood cell count.
Do not take NYVEPRIA if you have had a serious allergic reaction to pegfilgrastim products or filgrastim products.
Before you receive NYVEPRIA, tell your healthcare provider about all of your medical conditions, including if you: • have a sickle cell disorder. • have kidney problems. • are pregnant or plan to become pregnant. It is not known if NYVEPRIA will harm your unborn baby. • are breastfeeding or plan to breastfeed. It is not known if NYVEPRIA passes into your breast milk. Tell your healthcare provider about all of the medicines you take, including prescription and over-the-counter medicines, vitamins, and herbal supplements.
How will I receive NYVEPRIA? • NYVEPRIA is given as an injection under your skin (subcutaneous injection) by a healthcare provider. If your healthcare provider decides that the subcutaneous injections can be given at home by you or your caregiver, follow the detailed "Instructions for Use" that comes with your NYVEPRIA for information on how to prepare and inject a dose of NYVEPRIA using the single-dose prefilled syringe. • You and your caregiver will be shown how to prepare and inject NYVEPRIA using the single-dose prefilled syringe before you use it. • You should not inject a dose of NYVEPRIA to children weighing less than 99 pounds (45 kg) from a NYVEPRIA prefilled syringe. A dose less than 0.6 mL (6 mg) cannot be accurately measured using the NYVEPRIA prefilled syringe. • If you are receiving NYVEPRIA because you are also receiving chemotherapy, the last dose of NYVEPRIA should be injected at least 14 days before and 24 hours after your dose of chemotherapy. • If you miss a dose of NYVEPRIA, talk to your healthcare provider about when you should give your next dose. • If you inject too much NYVEPRIA, call your healthcare provider or Poison Help line at 1-800-222-1222 or go to the nearest hospital emergency room right away.
What are possible side effects of NYVEPRIA? NYVEPRIA may cause serious side effects, including: • Spleen rupture. Your spleen may become enlarged and can rupture. A ruptured spleen can cause death. Call your healthcare provider right away if you have pain in the left upper stomach area or your left shoulder. • A serious lung problem called Acute Respiratory Distress Syndrome (ARDS). Call your healthcare provider or get emergency help right away if you have shortness of breath with or without a fever, trouble breathing, or a fast rate of breathing. • Serious allergic reactions. Allergic reactions can cause a rash over your whole body, shortness of breath, wheezing, dizziness, swelling around your mouth or eyes, fast heart rate, and sweating. If you have any of these symptoms, stop using NYVEPRIA and call your healthcare provider or get emergency medical help right away. • Sickle cell crises in people with sickle cell disorder. You may have a severe sickle cell crisis, which could lead to death. Call your healthcare provider right away if you have symptoms of sickle cell crisis such as pain or difficulty breathing. • Kidney injury. Call your healthcare provider right away if you develop any of the following symptoms: o swelling of your face or ankles o blood in your urine or dark colored urine o you urinate less than usual • Increased white blood cell count (leukocytosis). Your healthcare provider will check your blood count during treatment with NYVEPRIA. • Decreased platelet count (thrombocytopenia). Your healthcare provider will check your blood count during treatment with NYVEPRIA. Tell your healthcare provider if you have unusual bleeding or bruising during treatment with NYVEPRIA. • Capillary Leak Syndrome (CLS). NYVEPRIA can cause fluid to leak from blood vessels into your body's tissues. CLS can quickly cause you to have symptoms that may become life-threatening. Get emergency medical help right away if you develop any of the following symptoms: o swelling or puffiness and are urinating less than usual o trouble breathing o swelling of your stomach area (abdomen) and feeling of fullness o dizziness or feeling faint o a general feeling of tiredness • Myelodysplastic Syndrome (MDS) and Acute Myeloid Leukemia (AML). If you have breast cancer or lung cancer, when NYVEPRIA is used with chemotherapy and radiation therapy, or with radiation therapy alone, you may have an increased risk of developing a precancerous blood condition called MDS or a blood cancer called AML. Call your healthcare provider if you develop any symptoms of MDS and AML, including tiredness, fever, or easy bruising or bleeding. • Inflammation of the aorta (aortitis). Inflammation of the aorta (the large blood vessel that carries blood from the heart to the body) has happened in people who receive pegfilgrastim products. Tell your healthcare provider if you develop fever, stomach (abdominal) pain, feeling tired, or back pain. The most common side effects of NYVEPRIA are pain in the bones, arms, and legs. These are not all the possible side effects of NYVEPRIA. Call your healthcare provider for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.
How should I store NYVEPRIA single-dose prefilled syringe? • Store NYVEPRIA in the refrigerator between 36°F to 46°F (2°C to 8°C). • Do not freeze. If NYVEPRIA is accidentally frozen, allow the prefilled syringe to thaw in the refrigerator before injecting. • Do not use a NYVEPRIA prefilled syringe that has been frozen more than 1 time. Throw it away and use a new NYVEPRIA prefilled syringe. • Keep NYVEPRIA in the original carton to protect from light or physical damage. • Do not shake NYVEPRIA. • Take NYVEPRIA out of the refrigerator 30 minutes before use and allow it to reach room temperature, 68°F to 77°F (20°C to 25°C), before preparing an injection. • Throw away (dispose of) any NYVEPRIA that has been left at room temperature, 68°F to 77°F (20°C to 25°C), for more than 15 days. Keep NYVEPRIA and all medicines out of the reach of children.
General information about the safe and effective use of NYVEPRIA. Medicines are sometimes prescribed for purposes other than those listed in a Patient Information leaflet. Do not use NYVEPRIA for a condition for which it was not prescribed. Do not give NYVEPRIA to other people, even if they have the same symptoms that you have. It may harm them. You can ask your pharmacist or healthcare provider for information about NYVEPRIA that is written for health professionals.

What are the ingredients in NYVEPRIA? Active ingredient: pegfilgrastim-apgf. Inactive ingredients: acetate, polysorbate 20, sodium, and sorbitol in water for injection. Manufactured by Hospira, Inc., a Pfizer Company, Lake Forest, IL 60045 USA US License No. 1974 Distributed by Pfizer Labs, division of Pfizer Inc., New York, NY 10001 USA LAB-1187-5.0 For more information go to www.pfizer.com or call 1-800-438-1985.

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