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Single-Dose vs. Divided-Dose G-CSF for Stem Cell Mobilization in Healthy Allogeneic Donors

2026年7月13日 更新者:Yi Luo、First Affiliated Hospital of Zhejiang University

Randomized Controlled Trial Comparing Single-dose and Divided-dose G-CSF for Peripheral Blood Stem Cell Mobilization in Healthy Donors for Allogeneic Hematopoietic Stem Cell Transplantation.

National and international guidelines/consensus recommend G-CSF (granulocyte colony-stimulating factor) at 10 μg/kg/day as a single daily dose or divided into two daily doses for mobilization in healthy donors for allogeneic hematopoietic stem cell transplantation. However, there is no consensus or standard regarding single versus divided dosing, and high-quality evidence is lacking. Existing randomized controlled trials have small sample sizes and inconsistent conclusions, and none have focused on Asian population characteristics (e.g., body weight and drug metabolism differences). This study aims to provide level I evidence to optimize donor experience and define the optimal administration strategy.

Inclusion criteria: Healthy allogeneic stem cell donors aged 18-60 years, meeting institutional standard donor screening criteria (HLA matching, normal blood counts, normal liver and kidney function, negative infection screening), and providing written informed consent.

Primary endpoint: The rate of achieving a first apheresis yield of ≥ 4 × 10⁶ CD34⁺ cells/kg (donor body weight) after 5 days of G-CSF mobilization.

Secondary endpoints: The rate of achieving ≥ 2 × 10⁶ CD34⁺ cells/kg with at most one apheresis; time to myeloid, platelet, and erythroid engraftment in recipients; the proportion and composition of immune cells (CD34⁺, CD3⁺, CD19⁺, CD56⁺, etc.) in the apheresis product; donor adverse events; donor-reported outcomes; and the difference in CD34⁺ stem cell yields between single-dose and divided-dose mobilization.

Intervention: G-CSF will be administered at a total dose of 10 μg/kg/day, either as a single daily injection or divided into two equal daily injections.

This study is designed to investigate whether single-dose or divided-dose G-CSF administration is superior for mobilizing healthy donors in allogeneic hematopoietic stem cell transplantation.

調査の概要

状態

募集

条件

介入・治療

詳細な説明

National and international guidelines/consensus recommend G-CSF (granulocyte colony-stimulating factor) at 10 μg/kg/day as a single daily dose or divided into two daily doses for mobilization in healthy donors for allogeneic hematopoietic stem cell transplantation. However, there is no consensus or standard regarding single versus divided dosing, and high-quality evidence is lacking. Existing randomized controlled trials have small sample sizes and inconsistent conclusions, and none have focused on Asian population characteristics (e.g., body weight and drug metabolism differences). This study aims to provide level I evidence to optimize donor experience and define the optimal administration strategy.

Inclusion criteria: Healthy allogeneic stem cell donors aged 18-60 years, meeting institutional standard donor screening criteria (HLA matching, normal blood counts, normal liver and kidney function, negative infection screening), and providing written informed consent.

Primary endpoint: The rate of achieving a first apheresis yield of ≥ 4 × 10⁶ CD34⁺ cells/kg (donor body weight) after 5 days of G-CSF mobilization.

Secondary endpoints: The rate of achieving ≥ 2 × 10⁶ CD34⁺ cells/kg with at most one apheresis; time to myeloid, platelet, and erythroid engraftment in recipients; the proportion and composition of immune cells (CD34⁺, CD3⁺, CD19⁺, CD56⁺, etc.) in the apheresis product; donor adverse events; donor-reported outcomes; and the difference in CD34⁺ stem cell yields between single-dose and divided-dose mobilization.

Intervention: G-CSF will be administered at a total dose of 10 μg/kg/day, either as a single daily injection or divided into two equal daily injections.

Weight-based mobilization: G-CSF 10 μg/kg/day × 5 days, SC, once daily or in two divided doses (max 7 days). Apheresis begins on day 5; subsequent dosing and collections are guided by the CD34⁺ yield, not to exceed 7 days.

This study is designed to investigate whether single-dose or divided-dose G-CSF administration is superior for mobilizing healthy donors in allogeneic hematopoietic stem cell transplantation.

研究の種類

介入

入学 (推定)

560

段階

  • フェーズ 3

連絡先と場所

このセクションには、調査を実施する担当者の連絡先の詳細と、この調査が実施されている場所に関する情報が記載されています。

研究連絡先

  • 名前:YIBO WU
  • 電話番号:+8657187233801
  • メール:wuyibo7@126.com

研究場所

    • Hunan
      • Changsha、Hunan、中国
        • 募集
        • Xiangya Hospital of Central South University
        • コンタクト:
    • Zhejiang
      • Hangzhou、Zhejiang、中国
        • 募集
        • The Second Affiliated Hospital of Zhejiang University School of Medicine
        • コンタクト:
      • Hangzhou、Zhejiang、中国
        • 募集
        • Sir Run Run Shaw Hospital, Zhejiang University School of Medicine
        • コンタクト:
      • Hangzhou、Zhejiang、中国
        • 募集
        • The First Affiliated Hospital, Zhejiang University School of Medicine.
        • コンタクト:
      • Jinhua、Zhejiang、中国
        • 募集
        • Jinhua Central Hospital
        • コンタクト:
      • Ningbo、Zhejiang、中国
        • 募集
        • The First Affiliated Hospital of Ningbo University
        • コンタクト:
      • Ningbo、Zhejiang、中国
        • 募集
        • The affiliated people's hospital of ningbo university
        • コンタクト:
      • Wenzhou、Zhejiang、中国
        • 募集
        • The First Affiliated Hospital of Wenzhou Medical University
        • コンタクト:

参加基準

研究者は、適格基準と呼ばれる特定の説明に適合する人を探します。これらの基準のいくつかの例は、人の一般的な健康状態または以前の治療です。

適格基準

就学可能な年齢

  • 大人
  • 高齢者

健康ボランティアの受け入れ

いいえ

説明

Inclusion Criteria:

  1. Age 18-65 years.
  2. Provision of written informed consent.
  3. White blood cell (WBC) count > 2.5 × 10⁹/L.
  4. Absolute neutrophil count (ANC) > 1.5 × 10⁹/L and platelet count > 100 × 10⁹/L.
  5. Deemed suitable as a donor by the investigator based on donor physical examination and HLA matching.
  6. Body weight ≥ 40 kg for females and ≥ 45 kg for males.

Exclusion Criteria:

  1. Currently having any disease or condition that, in the judgment of the investigator, would make the donor unsuitable for participation in this study, such as severe neurological, hepatic, renal, endocrine, cardiovascular, hematologic, gastrointestinal, respiratory, or metabolic diseases; malignancies; myeloproliferative disorders; or psychiatric illnesses.
  2. Currently having an active infection requiring systemic therapy.
  3. Allergy to the study drug.
  4. Presence of a malignant tumor.
  5. Untreated HBV infection with HBV-DNA above the lower limit of detection.
  6. HIV infection.
  7. Addition of any new medication within 2 weeks prior to entry into this study.
  8. Female donors who are pregnant or breastfeeding.

研究計画

このセクションでは、研究がどのように設計され、研究が何を測定しているかなど、研究計画の詳細を提供します。

研究はどのように設計されていますか?

デザインの詳細

  • 主な目的:処理
  • 割り当て:ランダム化
  • 介入モデル:並列代入
  • マスキング:なし(オープンラベル)

武器と介入

参加者グループ / アーム
介入・治療
実験的:Divided-dose Arm
G-CSF 10 μg/kg per day divided into two equal subcutaneous doses daily for 5 days (up to 7 days if needed).
G-CSF 10 μg/kg per day divided into two equal subcutaneous doses daily for 5 days (up to 7 days if needed)
アクティブコンパレータ:Single-dose Arm
G-CSF 10 μg/kg administered subcutaneously once daily for 5 days (up to 7 days if needed based on CD34⁺ yield).
G-CSF 10 μg/kg administered subcutaneously once daily for 5 days (up to 7 days if needed based on CD34⁺ yield).

この研究は何を測定していますか?

主要な結果の測定

結果測定
メジャーの説明
時間枠
Proportion of donors achieving a first apheresis yield of ≥ 4 × 10⁶ CD34⁺ cells/kg (donor weight).
時間枠:From enrollment to the end of stem cell collection (8 weeks)
Proportion of donors achieving a first apheresis yield of ≥ 4 × 10⁶ CD34⁺ cells/kg (donor weight).
From enrollment to the end of stem cell collection (8 weeks)

二次結果の測定

結果測定
メジャーの説明
時間枠
Proportion of donors achieving a yield of ≥ 2 × 10⁶ CD34⁺ cells/kg (donor weight) with no more than one apheresis.
時間枠:From enrollment to the end of stem cell collection (8 weeks)
Proportion of donors achieving a yield of ≥ 2 × 10⁶ CD34⁺ cells/kg (donor weight) with no more than one apheresis.
From enrollment to the end of stem cell collection (8 weeks)
Cumulative incidence rates of neutrophil engraftment in allogeneic stem cell transplant recipients.
時間枠:28 days after transplantation
Defined as time from stem cell infusion to the first of three consecutive days with ANC ≥ 0.5 × 10⁹/L.
28 days after transplantation
Cumulative incidence rates of platelet engraftment in allogeneic stem cell transplant recipients.
時間枠:28 days after transplantation
Proportion of recipients achieving platelet count ≥ 20 × 10⁹/L with no platelet transfusion for at least 7 consecutive days, by Day +28 post-transplant.
28 days after transplantation
Cumulative incidence rates of erythroid engraftment in allogeneic stem cell transplant recipients.
時間枠:28 days after transplantation
Proportion of recipients achieving hemoglobin ≥ 60 g/L without red blood cell transfusion for at least 7 consecutive days, by Day +28 post-transplant.
28 days after transplantation
The proportion and composition of immune cells (including CD34⁺, CD3⁺, CD19⁺, CD56⁺, etc.) in the apheresis product
時間枠:From enrollment to the end of stem cell collection (8 weeks)
The proportion and composition of immune cells (including CD34⁺, CD3⁺, CD19⁺, CD56⁺, etc.) in the apheresis product
From enrollment to the end of stem cell collection (8 weeks)
Donor adverse events and recipient-reported outcomes
時間枠:From enrollment to the end of stem cell collection (8 weeks)
Donor adverse events and recipient-reported outcomes
From enrollment to the end of stem cell collection (8 weeks)
Comparison of peripheral blood CD34⁺ cell counts (cells/μL) on Days 1, 2, 3, 4, and 5 between healthy donors mobilized with single-dose versus divided-dose G-CSF
時間枠:From enrollment to the end of stem cell collection (8 weeks)
Comparison of peripheral blood CD34⁺ cell counts (cells/μL) on Days 1, 2, 3, 4, and 5 between healthy donors mobilized with single-dose versus divided-dose G-CSF
From enrollment to the end of stem cell collection (8 weeks)
Comparison of the rate of engraftment failure in recipients between the two groups
時間枠:From enrollment to the end of stem cell collection (8 weeks)
Comparison of the rate of engraftment failure in recipients between the two groups
From enrollment to the end of stem cell collection (8 weeks)
Comparison of overall survival (OS) rates at 2 years in recipients between the two groups;
時間枠:2 years post transplantation
Comparison of overall survival (OS) rates at 2 years in recipients between the two groups;
2 years post transplantation
Comparison of overall survival (OS) rates at 5 years in recipients between the two groups;
時間枠:5 years post transplantation
Comparison of overall survival (OS) rates at 5 years in recipients between the two groups;
5 years post transplantation
Comparison of CD34⁺ stem cell yield in the apheresis product between the two groups
時間枠:From enrollment to the end of stem cell collection (8 weeks)
Comparison of CD34⁺ stem cell yield in the apheresis product between the two groups
From enrollment to the end of stem cell collection (8 weeks)

協力者と研究者

ここでは、この調査に関係する人々や組織を見つけることができます。

スポンサー

協力者

捜査官

  • 主任研究者:YI LUO、Zhejiang University

研究記録日

これらの日付は、ClinicalTrials.gov への研究記録と要約結果の提出の進捗状況を追跡します。研究記録と報告された結果は、国立医学図書館 (NLM) によって審査され、公開 Web サイトに掲載される前に、特定の品質管理基準を満たしていることが確認されます。

主要日程の研究

研究開始 (推定)

2026年7月10日

一次修了 (推定)

2028年12月1日

研究の完了 (推定)

2029年7月10日

試験登録日

最初に提出

2026年7月4日

QC基準を満たした最初の提出物

2026年7月4日

最初の投稿 (実際)

2026年7月9日

学習記録の更新

投稿された最後の更新 (実際)

2026年7月15日

QC基準を満たした最後の更新が送信されました

2026年7月13日

最終確認日

2026年7月1日

詳しくは

本研究に関する用語

その他の研究ID番号

  • ZJU-GCSF

個々の参加者データ (IPD) の計画

個々の参加者データ (IPD) を共有する予定はありますか?

はい

IPD プランの説明

We plan to share de-identified individual participant data (IPD) collected throughout the trial, including baseline donor characteristics, daily peripheral blood CD34⁺ cell counts, apheresis product immune cell subsets, donor adverse events, recipient engraftment times, engraftment rates, and overall survival data at 2 and 5 years. IPD will be made available upon reasonable request to the principal investigator, after the primary results are published, via a secure data repository (e.g., Zenodo or institutional data archive)Access will be granted for pre-specified research purposes only, and requestors must sign a data access agreement.

IPD 共有時間枠

IPD will be made available upon reasonable request to the principal investigator, after the primary results are published, via a secure data repository (e.g., Zenodo or institutional data archive).

IPD 共有アクセス基準

IPD will be made available upon reasonable request to the principal investigator, after the primary results are published, via a secure data repository (e.g., Zenodo or institutional data archive). A data dictionary and study protocol will be provided alongside the data. Access will be granted for pre-specified research purposes only, and requestors must sign a data access agreement.

IPD 共有サポート情報タイプ

  • STUDY_PROTOCOL
  • ICF
  • CSR

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米国FDA規制医薬品の研究

いいえ

米国FDA規制機器製品の研究

いいえ

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