TheraRadar

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Data updated: Mar 10, 2026

RELEUKO

FILGRASTIM-AYOW
Oncology Approved 2022-02-25

RELEUKO (filgrastim-ayow) is a leukocyte growth factor indicated to reduce the incidence of infection and the duration of neutropenia in patients with various malignancies. It is utilized for patients undergoing myelosuppressive chemotherapy, bone marrow transplantation, or treatment for acute myeloid leukemia. The drug also serves to mobilize progenitor cells for collection, manage symptomatic chronic forms of neutropenia, and improve survival in cases of acute radiation exposure.

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

How RELEUKO Works

RELEUKO acts as a colony-stimulating factor that binds to specific cell surface receptors on hematopoietic cells to stimulate the production of neutrophils. It regulates the proliferation and differentiation of neutrophil progenitors within the bone marrow and enhances the functional activation of mature cells. This process increases phagocytic ability and other cellular functions essential for the immune response while having minimal effect on other cell lineages.

Source: FDA Label
1
Indication
--
Phase 3 Trials
4
Years on Market

Details

Status
Prescription
First Approved
2022-02-25
Routes
SUBCUTANEOUS, INTRAVENOUS, SUBCUTANEOUS
Dosage Forms
SOLUTION

Companies

Active Ingredient: FILGRASTIM-AYOW

RELEUKO Approval History

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What RELEUKO Treats

7 indications

RELEUKO is approved for 7 conditions since its original approval in 2022. These indications span multiple therapeutic areas including oncology, immunology, and more.

  • Febrile Neutropenia
  • Acute Myeloid Leukemia
  • Neutropenia
  • Congenital Neutropenia
  • Cyclic Neutropenia
  • Idiopathic Neutropenia
  • Acute Radiation Syndrome
Source: FDA Label
Biosimilar for Neupogen

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

Drugs Similar to RELEUKO

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Baxter
Shared indications:
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DAURISMO
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Shared indications:
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FULPHILA
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Viatris
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IDHIFA
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Shared indications:
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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.

RELEUKO FDA Label Details

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Indications & Usage

FDA Label (PDF)

RELEUKO is a leukocyte growth factor indicated to: Decrease the incidence of infection‚ as manifested by febrile neutropenia‚ in patients with nonmyeloid malignancies receiving myelosuppressive anti- cancer drugs associated with a significant incidence of severe neutropenia with fever. Reduce the time to neutrophil recovery and the duration of fever, following induction or consolidation chemotherapy treatment of patients with acute myeloid leukemia (AML). Reduce the duration of neutropenia and neutropenia-related clinical sequelae‚ e.g.‚ febrile neutropenia, in patients with nonmyeloid maligna...

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Data Sources

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