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  • Title: Safety and efficacy of administering reduced doses of pegylated recombinant human granulocyte-colony stimulating factors in patients treated with cisplatin and etoposide for small cell carcinoma: A retrospective study.
    Author: Liu C, Hao Y, Wang L, Meng F, Wen F, Zhong D.
    Journal: Thorac Cancer; 2021 Apr; 12(8):1154-1161. PubMed ID: 33590721.
    Abstract:
    BACKGROUND: The aim of this study was to discuss the safety and efficacy of administering reduced doses (3 mg) of pegylated recombinant human granulocyte-colony stimulating factor (PEG-rhG-CSF) at approximately 24 h or up to three days following treatment with etoposide and cisplatin (EP). METHODS: A total of 104 cycles from 31 patients were divided into a PEG-rhG-CSF prophylaxis group (PP-Group) and a control group (No-PP-Group). The PP-Group received a reduced dose of 3 mg of PEG-rhG-CSF within a minimum of 15 h and a maximum of 72 h following EP chemotherapy, while the rest did not receive any G-CSF prophylaxis (No-PP-Group). For both groups, complete blood counts, incidence of febrile neutropenia (FN), grade III or IV neutropenia, and the use of antibiotics to treat neutropenia were recorded. RESULTS: There was statistically no significant difference in the incidence of FN (0% vs. 1.4%, p = 1), antibiotic use due to neutropenia (0% vs. 2.7%, p = 0.881), estimated lowest mean marginal (EM) platelet (106.56 × 109 /L vs. 127.70 × 109 /L, p = 0.056) and hemoglobin (110.48 g/L vs. 110.14 g/L, p = 0.906) levels between the two groups. However, when compared with the No-PP-group, the white blood cell count in the PP-group was significantly higher (EM means: 4.95 × 109 /L vs. 2.80 × 109 /L, p < 0.01), while the incidence of grade III or IV neutropenia was significantly lower (9.1% vs. 68.1%, p < 0.01). CONCLUSIONS: The administration of a low dose (3 mg) of PEG-rhG-CSF within approximately 24 h or up to three days following EP treatment is safe and effective at reducing the risk of neutropenia. These findings bring a more flexible administration interval between PEG-rhG-CSF and EP treatment.
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