Ryzneuta (efbemalenograstim alfa-vuxw)

Leukocyte Stimulating Factors Subcutaneous Syringe (Ml)

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Last reviewed · Source: First Databank (FDB) drug data

Overview

Efbemalenograstim alfa-vuxw, a leukocyte growth factor, is a recombinant fusion protein consisting of human granulocyte colony-stimulating factor (G-CSF) and the Fc portion of human IgG2.

Efbemalenograstim alfa-vuxw is a leukocyte growth factor; the drug is recombinant fusion protein consisting of human granulocyte colony-stimulating factor (G-CSF), a 16 amino-acid linker, and the Fc portion of human IgG2. Efbemalenograstim alfa acts as a colony-stimulating factor, binding to specific cell surface receptors on hematopoietic cells to stimulate proliferation, differentiation, commitment, and end cell functional activation.

In female patients with breast cancer and in healthy male patients, efbemalenograstim alfa-vuxw exhibits non-linear and time-dependent pharmacokinetics over the dosage range of 30--360 mcg/kg. The median absolute neutrophil count (ANC) in female patients with breast cancer receiving EC (epirubicin and cyclophosphamide) chemotherapy peaked on day 4 (about 24 hours after efbemalenograstim alfa-vuxw administration) for the 240 and 320 mcg/kg doses, declined to nadir on days 8--9, then recovered to >=2000/mm3 by day 11. Absolute neutrophil count levels tended to be higher during cycles 2, 3, and 4 compared to cycle 1.

The median ANC in female patients with breast cancer receiving TAC (docetaxel, doxorubicin, and cyclophosphamide) chemotherapy peaked on day 3 (about 24 hours after efbemalenograstim alfa-vuxw administration) in cycles 1 and 3, declined to nadir on day 8, and recovered to 2000/mm3 on days 9 and 10. Efbemelanograstim alfa-vuxw is expected to undergo metabolism into small peptides via catabolic pathways. The mean elimination half-life of efbemelanograstim alfa-vuxw was 35.6 hours during cycle 1, and 36.9 hours during cycle 3.

Neutrophil receptor binding is an important component of efbemalenograstim alfa-vuxw clearance, and serum clearance is directly related to the neutrophil count. No clinically significant differences in efbemelanograstim alfa-vuxw pharmacokinetics have been observed based on age (20--83 years) or body weight (40--137 kg). The impact of sex, race, ethnicity, renal and/or hepatic impairment, and pregnancy on pharmacokinetics of efbemalenograstim alfa-vuxw are unknown.

USES: Efbemalenograstim alfa is a human-made version of a certain natural substance made by your body. It is used to help your body make more white blood cells. White blood cells are important to help you fight off infections.

Efbemalenograstim alfa is given to people whose ability to make white blood cells is reduced due to chemotherapy.

Generic name: efbemalenograstim alfa-vuxw
Drug class: Leukocyte Stimulating Factors
Therapeutic class: Hematological Agents

Reference product & biosimilars

No reference, biosimilar or interchangeable associated with this drug.

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Indications

The following indications are listed for Ryzneuta:

  • Prevention Of Infection In Non-Myeloid Malignancies Receiving Myelosuppressive Treatment

Dosing

No dosing information is available for this tab.

Drug interactions

No formal drug interaction studies have been conducted with efbemelanograstim alfa-vuxw. Efbemelanograstim alfa-vuxw is expected to be metabolized into small peptides via catabolic pathways.

Contraindications

*History of serious allergic reactions to granulocyte stimulating factors (e.g., efbemalenograstim alfa-vuxw, pegfilgrastim, filgrastim products).

Adverse reactions

Adverse effects reported in >=10% of patients receiving efbemelanograstim alfa-vuxw include nausea, anemia, and thrombocytopenia.

Precautions

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ICD codes

CodeTypeDescription
Prevention of infection in non-myeloid malignancies receiving myelosuppressive treatment
C80.1ICD10CMMalignant (primary) neoplasm, unspecified

ICD code information from First Databank (FDB).

Formulary status

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Last reviewed · Source: First Databank (FDB) drug data