ArticleClinical drug investigation2025
Pharmacokinetics, Pharmacodynamics, Safety, and Tolerability of Efbemalenograstim Alfa (F-627), a Novel Long-Acting rhG-CSF, in Healthy Chinese Participants: An Open-Label, Single-Center Phase I Study.
Article in Clinical drug investigation, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper, 1 of them a synthesis that pooled it.
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14 authors.
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Abstract
BACKGROUND AND
objectivesIn clinical practice, granulocyte colony-stimulating factor (G-CSF) is often used to lower infection risk and avoid poor outcomes from chemotherapy dose reduction or delay. Efbemalenograstim alfa (also known as F-627) is a non-pegylated but long-acting (once-per-cycle) recombinant human granulocyte colony-stimulating factor (rhG-CSF) compared with pegfilgrastim. This study was designed to obtain pharmacokinetic (PK)/pharmacodynamic (PD), safety, and tolerability data for F-627 in healthy Chinese participants.
methodsThis was a single-center, open-label phase I clinical study involving 24 healthy Chinese volunteers (sex ratio = 1:1). All the participants were administered a single subcutaneous injection of 20 mg F-627 into the abdomen.
resultsIn this study, 15 (62.5%) participants reported 28 treatment-related adverse events. PK/PD data showed that after a single 20 mg subcutaneous (SC) F-627 abdominal injection in healthy Chinese participants, serum concentrations peaked at 36 h post dose, while the absolute neutrophil count (ANC) peaked at 96 h. After peaking, F-627 serum levels decreased rapidly to low concentrations by 120 h, while ANC declined gradually to near baseline by day 15. Similar trends in serum concentration and ANC kinetics were seen between sex.
conclusionsThis phase I study showed that 20 mg F-627 was well tolerated and exhibited a favorable safety profile in a healthy Chinese population. The PK and PD data correlated well and were consistent across sex.
trial registrationThis trial was registered at the Chinese Clinical Trial Registry (chictr.org.cn) on 10 September 2024 (registration ID: ChiCTR2400089548).
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