TheraRadar
Data updated: May 26, 2026

FYLNETRA (pegfilgrastim-pbbk)

Oncology Approved 2022-05-26

FYLNETRA is a leukocyte growth factor indicated to decrease the incidence of infection, manifested as febrile neutropenia, in patients with non-myeloid malignancies receiving myelosuppressive anti-cancer drugs. It is also approved to increase survival in patients acutely exposed to myelosuppressive doses of radiation, a condition known as Hematopoietic Subsyndrome of Acute Radiation Syndrome. This medication is not indicated for the mobilization of peripheral blood progenitor cells for hematopoietic stem cell transplantation.

Source: FDA Label • KASHIV BIOSCIENCES LLC • Leukocyte Growth Factor

How FYLNETRA Works

FYLNETRA is a colony-stimulating factor that acts on hematopoietic cells by binding to specific cell surface receptors. This binding process stimulates the proliferation, differentiation, and commitment of these cells. Additionally, the drug triggers end cell functional activation to support the production and activity of white blood cells.

1
Indication
--
Phase 3 Trials
4
Years on Market

Details

Status
Prescription
First Approved
2022-05-26
Routes
INJECTION
Dosage Forms
INJECTABLE

Companies

Active Ingredient: PEGFILGRASTIM-PBBK

FYLNETRA Approval History

2023
2024
2025
2026
Original
New Indication
New Form
Label Update
2 FDA actions from 2022 to 2025
Apr 2025 SUPPL
Update
May 2022 ORIGINAL
New Ingredient · Type 2 - New Active Ingredient

What FYLNETRA Treats

2 indications

FYLNETRA is approved for 2 conditions since its original approval in 2022. These indications span multiple therapeutic areas including oncology, immunology, and more.

  • Febrile Neutropenia
  • Acute Radiation Syndrome
Source: FDA Label
Biosimilar for Neulasta

FYLNETRA is a lower-cost alternative to Neulasta with no clinically meaningful differences. Requires prescriber approval to substitute.

FYLNETRA Competitive Set

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Filters applied: drops same-active-ingredient (505(b)(2) reformulations), route-mismatch (topical vs systemic), and cross-therapeutic-area matches in same-indication rings.

Drugs Similar to FYLNETRA

3 of 20

FDA-approved drugs for similar conditions. Compare mechanisms and indications to understand treatment alternatives.

ARMLUPEG
PEGFILGRASTIM-UNNE
2 shared
Lupin
Shared indications:
Febrile NeutropeniaAcute Radiation Syndrome
NEULASTA
PEGFILGRASTIM
2 shared
Amgen
Shared indications:
Febrile NeutropeniaAcute Radiation Syndrome
NYPOZI
FILGRASTIM-TXID
2 shared
TANVEX BIOPHARMA USA INC
Shared indications:
Febrile NeutropeniaAcute Radiation Syndrome
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Active Pipeline

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Key Completed Trials

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Trial Timeline

Full development history with FDA approval milestones

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Understanding FDA Approval Types
Count Type What it means
- ORIG Original approval - drug first enters market
- SUPPL - Efficacy New indication (new disease/condition approved)
- SUPPL - Labeling Label text changes (warnings, dosing updates)
- SUPPL - Manufacturing Production changes (new facility)
- SUPPL - Chemistry Formulation changes (new dosage strength)

Green lines in the timeline show ORIG and Efficacy approvals - the clinically meaningful milestones.

FYLNETRA FDA Label Details

Indications & Usage

FDA Label (PDF)

FYLNETRA is indicated for the treatment of Febrile Neutropenia; Acute Radiation Syndrome.

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Data Sources

Data sourced from official FDA and NIH databases. Click links to verify on original sources.