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  • Title: Randomized controlled clinical trial of polyethylene glycol recombinant human granulocyte colony-stimulating factor in the treatment of neutropenia after chemotherapy for breast cancer.
    Author: Huang W, Liu J, Zeng Y, Wu F, Li N, Chen K, Hong Y, Wang L, Zhen H, Lin L.
    Journal: Cancer Chemother Pharmacol; 2018 Oct; 82(4):607-613. PubMed ID: 30043207.
    Abstract:
    PURPOSE: To explore the efficacy and safety of daily administration of recombinant human granulocyte colony-stimulating factor (rhG-CSF), and a single subcutaneous injection of polyethylene glycol recombinant human granulocyte colony-stimulating factor (PEG-rhG-CSF, a sustained-duration rhG-CSF) in neutropenia induced after chemotherapy. METHODS: Each patient received two cycles of chemotherapy. In the trial cycle, the patients received a single subcutaneous injection of PEG-rhG-CSF 100 µg/kg 72 h after completion of chemotherapy; and in the control cycle, rhG-CSF 5 µg/kg/day was subcutaneous injected once a day which began 72 h after completion of chemotherapy for continued 14 days or until the absolute neutrophil count (ANC) was ≥ 10.0 × 109/l twice. Therapeutic effect on primary endpoint was the incidence and duration of grade IV ANC neutropenia: comparing the incidence and the mean time of duration of PEG-rhG-CSF with those of rhG-CSF under the circumstance of ANC < 0.5 × 109/l. The immune populations evaluated included, CD3+ T cells, CD4+ T cells, CD8+ T cells, and NK cells. RESULTS: After chemotherapy, comparing to PEG-rhG-CSF, the CD4/CD8 ratio (0.84 ± 0.19 vs.1.06 ± 0.25) and the number of NK cells of rhG-CSF group (12.18 ± 2.13 vs. 15.78 ± 2.57) decreased significantly. The number of NK cells (12.18 ± 2.13 vs. 13.78 ± 2.57) of rhG-CSF group after chemotherapy is significantly less than that before chemotherapy, and the number of CD3+ (54.31 ± 7.51 vs. 57.96 ± 5.55), CD4+ (26.28 ± 6.25 vs. 29.48 ± 6.44), CD8+ (29.97 ± 6.47 vs. 31.68 ± 5.96) is lower than that before chemotherapy in rhG-CSF group, but the difference is not significant. CONCLUSION: The efficacy and side effects of a single subcutaneous injection of PEG-rhG-CSF were similar to that of rhG-CSF multiple administrations. PEG-rhG-CSF may have the effect of promoting immune function repairing.
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