fylnetra
Fylnetra (Pegfilgrastim-Pbbk) is a medication used to treat Neutropenia.
Pegfilgrastim-Pbbk · by Kashiv Biosciences LLC
Key facts
- Active ingredient
- Pegfilgrastim-Pbbk
- Form
- Injectable
- Strength
- PEGFILGRASTIM-PBBK 6MG/0.6ML
- Type
- Prescription (Rx)
- Brand or generic
- Brand-name
- May treat
- neutropenia
- Manufacturer
- Kashiv Biosciences LLC
- FDA application
- BLA761084
What is Fylnetra?
From the FDA label:Pegfilgrastim-pbbk is a covalent conjugate of recombinant methionyl human G-CSF and monomethoxypolyethylene glycol. Recombinant methionyl human G-CSF is a water-soluble 175 amino acid protein with a molecular weight of approximately 19 kilodaltons (kD). Recombinant methionyl human G-CSF is obtained from the bacterial fermentation of a strain of E coli transformed with a genetically engineered plasmid containing the human G-CSF gene. To produce pegfilgrastim-pbbk, a 20 kD monomethoxypolyethylene glycol molecule is covalently bound to the N-terminal methionyl residue of recombinant methionyl human G-CSF. The average molecular weight of pegfilgrastim-pbbk is approximately 39 kD. Kanamycin is used during the manufacturing process but is undetectable in the final product. FYLNETRA (pegfilgrastim-pbbk) injection is supplied in 0.6 mL prefilled syringes for manual subcutaneous injection. The prefilled syringe does not bear graduation marks and is designed to deliver the entire contents of the syringe (6 mg/0.6 mL). The delivered 0.6 mL dose from the prefilled syringe contains 6 mg pegfilgrastim-pbbk (based on protein weight) in a sterile, clear, colorless to slightly yellow, preservative-free solution (pH 4.0) containing acetic acid (0.36 mg), polysorbate 20 (0.02 mg), sodium hydroxide (0.03 mg), and sorbitol (30 mg) in Water for Injection, USP.
How to use
Patients with cancer receiving myelosuppressive chemotherapy 6 mg administered subcutaneously once per chemotherapy cycle. (2.1) Do not administer between 14 days before and 24 hours after administration of cytotoxic chemotherapy. (2.1) Use weight based dosing for pediatric patients weighing less than 45 kg; refer to Table 1. (2.3) Patients acutely exposed to myelosuppressive doses of radiation Two doses, 6 mg each, administered subcutaneously one week apart. Administer the first dose as soon as possible after suspected or confirmed exposure to myelosuppressive doses of radiation, and a second dose one week after. (2.2) Use weight based dosing for pediatric patients weighing less than 45 kg; refer to Table 1. (2.3) 2.1 Patients with Cancer Receiving Myelosuppressive Chemotherapy The recommended dosage of FYLNETRA is a single subcutaneous injection of 6 mg administered once per chemotherapy cycle. For dosing in pediatric patients weighing less than 45 kg, refer to Table 1. Do not administer FYLNETRA between 14 days before and 24 hours after administration of cytotoxic chemotherapy. 2.2 Patients with Hematopoietic Subsyndrome of Acute Radiation Syndrome The recommended dose of FYLNETRA is two doses, 6 mg each, administered subcutaneously one week apart. For dosing in pediatric patients weighing less than 45 kg, refer to Table 1. Administer the first dose as soon as possible…
Side effects
The following clinically significant adverse reactions are discussed in greater detail in other sections of the labeling: Splenic Rupture [see Warnings and Precautions (5.1) ] Acute Respiratory Distress Syndrome [see Warnings and Precautions (5.2) ] Serious Allergic Reactions [see Warnings and Precautions (5.3) ] Use in Patients with Sickle Cell Disorders [see Warnings and Precautions (5.4) ] Glomerulonephritis [see Warnings and Precautions (5.5) ] Leukocytosis [see Warnings and Precautions (5.6) ] Thrombocytopenia [see Warnings and Precautions (5.7) ] Capillary Leak Syndrome [see Warnings and Precautions (5.8) ] Potential for Tumor Growth Stimulatory Effects on Malignant Cells [see Warnings and Precautions (5.9) ] Myelodysplastic Syndrome [see Warnings and Precautions (5.10) ] Acute Myeloid Leukemia [see Warnings and Precautions (5.10) ] Aortitis [see Warnings and Precautions (5.11) ] Most common adverse reactions (≥ 5% difference in incidence compared to placebo) are bone pain and pain in extremity. (6.1) To report SUSPECTED ADVERSE REACTIONS, contact Amneal Pharmaceuticals LLC at 1-877-835 5472, option 3 or FDA at 1-800-FDA-1088 or www.fda.gov/medwatch. * Biosimilar means that the biological product is approved based on data demonstrating that it is highly similar to an FDA-approved biological product, known as a reference product, and that there are no clinically…
Warnings
Important safety information
Fatal splenic rupture: Evaluate patients who report left upper abdominal or shoulder pain for an enlarged spleen or splenic rupture. (5.1) Acute respiratory distress syndrome (ARDS): Evaluate patients who develop fever, lung infiltrates, or respiratory distress. Discontinue FYLNETRA in patients with ARDS. (5.2) Serious allergic reactions, including anaphylaxis: Permanently discontinue FYLNETRA in patients with serious allergic reactions. (5.3) Fatal sickle cell crises: Discontinue FYLNETRA if sickle cell crisis occurs. (5.4) Glomerulonephritis: Evaluate and consider dose-reduction or interruption of FYLNETRA if causality is likely. (5.5) Thrombocytopenia: Monitor platelet counts. (5.7) Myelodysplastic Syndrome (MDS) and Acute Myeloid Leukemia (AML): Monitor patients with breast and lung cancer using FYLNETRA in conjunction with chemotherapy and/or radiotherapy for signs and symptoms of MDS/AML. (5.10) 5.1 Splenic Rupture Splenic rupture, including fatal cases, can occur following the administration of pegfilgrastim products. Evaluate for an enlarged spleen or splenic rupture in patients who report left upper abdominal or shoulder pain after receiving FYLNETRA. 5.2 Acute Respiratory Distress Syndrome Acute respiratory distress syndrome (ARDS) can occur in patients receiving pegfilgrastim products. Evaluate patients who develop fever and lung infiltrates or respiratory distress after receiving FYLNETRA, for ARDS. Discontinue FYLNETRA in patients with ARDS. 5.3 Serious Allergic Reactions Serious allergic reactions, including anaphylaxis, can occur in patients receiving pegfilgrastim products. The majority of reported events occurred upon initial exposure. Allergic reactions, including anaphylaxis, can recur within days after the discontinuation of initial anti-allergic treatment. Permanently discontinue FYLNETRA in patients with serious allergic reactions. Do not administer FYLNETRA to patients with a history of serious allergic reactions to pegfilgrastim products or filgrastim products. 5.4 Use in Patients with Sickle Cell Disorders Severe and sometimes fatal sickle cell crises can occur in patients with sickle cell disorders receiving pegfilgrastim products. Discontinue FYLNETRA if sickle cell crisis occurs. 5.5 Glomerulonephritis Glomerulonephritis has occurred in patients receiving pegfilgrastim products. The diagnoses were based upon azotemia, hematuria (microscopic and macroscopic), proteinuria, and renal biopsy. Generally, events of glomerulonephritis resolved after dose-reduction or discontinuation of pegfilgrastim products. If glomerulonephritis is suspected, evaluate for cause. If causality is likely, consider dose-reduction or interruption of FYLNETRA. 5.6 Leukocytosis White blood cell (WBC) counts of 100 x 10 9 /L or greater have been observed in patients receiving pegfilgrastim products. Monitoring of complete blood count (CBC) during FYLNETRA therapy is recommended. 5.7 Thrombocytopenia Thrombocytopenia has been reported in patients receiving pegfilgrastim products. Monitor platelet counts. 5.8 Capillary Leak Syndrome Capillary leak syndrome has been reported after G-CSF administration, including pegfilgrastim products, and is characterized by hypotension, hypoalbuminemia, edema and hemoconcentration. Episodes vary in frequency, severity and may be life-threatening if treatment is delayed. Patients who develop symptoms of capillary leak syndrome should be closely monitored and receive standard symptomatic treatment, which may include a need for intensive care. 5.9 Potential for Tumor Growth Stimulatory Effects on Malignant Cells The granulocyte colony-stimulating factor (G-CSF) receptor through which pegfilgrastim products and filgrastim products act has been found on tumor cell lines. The possibility that pegfilgrastim products act as a growth factor for any tumor type, including myeloid malignancies and myelodysplasia, diseases for which pegfilgrastim products are not approved, cannot be excluded. 5.10 Myelodysplastic Syndrome (MDS) and Acute Myeloid Leukemia (AML) in Patients with Breast and Lung Cancer MDS and AML have been associated with the use of pegfilgrastim products in conjunction with chemotherapy and/or radiotherapy in patients with breast and lung cancer. Monitor patients for signs and symptoms of MDS/AML in these settings. 5.11 Aortitis Aortitis has been reported in patients receiving pegfilgrastim products. It may occur as early as the first week after start of therapy. Manifestations may include generalized signs and symptoms such as fever, abdominal pain, malaise, back pain, and increased inflammatory markers (e.g., c-reactive protein and white blood cell count). Consider aortitis in patients who develop these signs and symptoms without known etiology. Discontinue FYLNETRA if aortitis is suspected. 5.12 Nuclear Imaging Increased hematopoietic activity of the bone marrow in response to growth factor therapy has been associated with transient positive bone imaging changes. This should be considered when interpreting bone imaging results.
Who should not take Fylnetra
FYLNETRA is contraindicated in patients with a history of serious allergic reactions to pegfilgrastim products or filgrastim products. Reactions have included anaphylaxis [see Warnings and Precautions (5.3) ]. Patients with a history of serious allergic reactions to human granulocyte colony-stimulating factors such as pegfilgrastim products or filgrastim products. (4)
Overdose — what happens if you take too much
Overdosage of pegfilgrastim products may result in leukocytosis and bone pain. Events of edema, dyspnea, and pleural effusion have been reported in a single patient who administered pegfilgrastim on 8 consecutive days in error. In the event of overdose, the patient should be monitored for adverse reactions [ see Adverse Reactions (6) ] .
U.S. Poison Control: call or text 1-800-222-1222 (free, 24/7). In an emergency call 911. From the FDA label; not medical advice.
May treat (source: NIH RxClass)
Dosage forms
Injectable
The forms currently marketed in the U.S., per the FDA National Drug Code Directory.
Ways to save
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Frequently asked questions
- What does Fylnetra treat?
- Fylnetra (Pegfilgrastim-Pbbk) may be used to treat neutropenia, based on NIH RxClass drug-classification data (conditions a drug may treat — not a verbatim copy of the FDA-approved label). This is general reference, not medical advice.
- Is there a coupon or discount for Fylnetra?
- pharmaranks is an independent ratings site, not a pharmacy — we don't issue coupons or sell Fylnetra. To pay less, ask your prescriber or pharmacist whether a generic equivalent exists, check the manufacturer's copay/savings card and patient-assistance program, and compare a pharmacy discount card against your insurance copay. Prices vary by pharmacy, insurance, and location, so always confirm at the counter. This is general reference, not medical or financial advice.
- Who makes Fylnetra?
- Fylnetra is marketed by Kashiv Biosciences LLC. You can see Kashiv Biosciences LLC's full profile, rating, and other products on pharmaranks.
- Is Fylnetra a brand-name or generic drug?
- Fylnetra is a brand-name product with the active ingredient Pegfilgrastim-Pbbk.
- Is Fylnetra available over the counter?
- No. Fylnetra is a prescription (Rx) medication in the US — you need a prescription from a licensed clinician (in person or via telehealth); it isn't sold over the counter. For some conditions there are OTC alternatives — ask your pharmacist.
- What forms does Fylnetra come in?
- Fylnetra is currently marketed as injectable, per the FDA's National Drug Code Directory.
- Is Fylnetra FDA-registered?
- Fylnetra is on record with the U.S. FDA under application number BLA761084. You can verify this on its official FDA label.
- Is Fylnetra safe?
- There's no single safe-or-not verdict, and we don't yet have a composite recall-safety score for Fylnetra. Review its FDA-label side effects and warnings below, and always consult a licensed professional.
- What are the side effects of Fylnetra?
- Fylnetra's side effects are taken directly from its FDA label. From the label: The following clinically significant adverse reactions are discussed in greater detail in other sections of the labeling: Splenic Rupture [see Warnings and Precautions (5.1) ] Acute Respiratory Distress Syndrome [see Warnings and Precautions (5.2) ] Serious Allergic Reactions [see Warnings and Preca… Both common and serious reactions are documented in full on this page. This is general reference from the FDA, not medical advice — always consult a professional.
Clinical content sourced from the FDA label via openFDA (U.S. FDA). View the FDA label on DailyMed → Provided for general reference only — not medical advice. Always consult a licensed professional and the current prescribing information.
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