此页面是自动翻译的，不保证翻译的准确性。请参阅 英文版 对于源文本。

Early Discontinuation of Antibiotics in Paediatric High-risk Febrile Neutropenia (E-STOP2)

2026年5月13日 更新者：Hospital Universitari Vall d'Hebron Research Institute

Phase IV, Randomized, Open Label, Parallel Groups Clinical Trial for Evaluating the Early Stop of Antibiotic Treatment in High-risk Febrile Neutropenic Oncohaematological Paediatric Patients (e-STOP 2)

The goal of this clinical trial is to evaluate whether stopping antibiotic treatment early is safe in paediatric patients with cancer who develop high-risk febrile neutropenia but show good clinical evolution and low biomarker levels 48-72 hours after the episode.

The main questions it aims to answer are:

Is early discontinuation of antibiotics as safe as the standard strategy in terms of preventing invasive bacterial infections (such as sepsis, microbiologically documented infection, ICU admission, or death)? Does this strategy reduce the number of days on antibiotics without increasing infection-related complications?

Researchers will compare early antibiotic discontinuation with the standard care strategy to see whether the early-stop approach provides similar safety while reducing antibiotic exposure.

Participants will:

Receive standard initial antibiotic therapy for febrile neutropenia. Undergo clinical and biomarker evaluations (including CRP and PCT).

Be randomly assigned to:

Experimental group: early discontinuation of antibiotics, or Control group: continuation of the standard antibiotic strategy.

Be followed for 28 days after randomisation to monitor safety outcomes and treatment effects.

研究概览

地位

尚未招聘

条件

干预/治疗

详细说明

Children with cancer who develop febrile neutropenia (FN) routinely receive broad-spectrum intravenous antibiotics to prevent severe bacterial infections. Although this approach is essential in high-risk cases, prolonged antibiotic exposure increases the risk of adverse effects, antimicrobial resistance, drug toxicity, and longer hospital stays. Advances in risk stratification-particularly through clinical stability assessment and biomarkers such as C-reactive protein (CRP) and procalcitonin (PCT)-now allow earlier identification of patients who may no longer require intensive antibiotic coverage.

This study evaluates whether early discontinuation of antibiotic therapy is safe in paediatric patients with cancer who present high-risk FN but show a favourable clinical course 48-72 hours after onset. Eligible patients must meet predefined criteria indicating low risk of invasive bacterial infection (IBI), including clinical stability, absence of microbiologically documented infection, and decreasing biomarker levels. The trial uses a randomised, controlled, open-label design to compare an early-stop strategy with the current standard management.

The rationale for this approach is to determine whether antibiotic therapy can be safely shortened without compromising infection-related outcomes. Limiting unnecessary antibiotic exposure may reduce adverse drug events, improve patient comfort, minimise disruption of the microbiome, and support antimicrobial stewardship programmes. The study also incorporates biomarker measurements (CRP, PCT, IL-8) to explore their predictive value for IBI and to validate an IBI-risk prediction model for this population.

Participants will be monitored closely for signs of bacterial infection or clinical deterioration throughout the 28-day follow-up period. This design enables robust assessment of safety while reflecting real-world clinical decision-making and the potential benefits of personalised antibiotic duration in paediatric oncology care.

研究类型

介入性

注册 (估计的)

136

阶段

  • 第四阶段

联系人和位置

本节提供了进行研究的人员的详细联系信息，以及有关进行该研究的地点的信息。

学习联系方式

学习地点

  • 西班牙
    • Barcelona
      • Barcelona、Barcelona、西班牙、08035
        • Hospital Universitari Vall d'Hebron
        • 接触：
        • 首席研究员：
          • Natalia A Mendoza Palomar, MD
      • Esplugues de Llobregat、Barcelona、西班牙、08950
        • Hospital Sant Joan de Déu
        • 接触：
        • 首席研究员：
          • Silvia Simó Nebot, MD, PhD
    • Madrid
      • Madrid、Madrid、西班牙、28046
        • Hospital Universitario La Paz
        • 接触：
        • 首席研究员：
          • Pilar Guerra García, MD
      • Madrid、Madrid、西班牙、28009
        • Hospital Infantil Universitario Nino Jesus
        • 接触：
        • 首席研究员：
          • Blanca Herrero Velsaco, MD

参与标准

研究人员寻找符合特定描述的人，称为资格标准。这些标准的一些例子是一个人的一般健康状况或先前的治疗。

资格标准

适合学习的年龄

  • 孩子
  • 成人

接受健康志愿者

不

描述

Inclusion Criteria:

  1. Male and female patients ≤18 years of age expected to develop prolonged neutropenia (>7 days), with:

    • Acute myeloblastic leukaemia at any phase of chemotherapy
    • Acute lymphoblastic leukaemia in induction, consolidation, or intensification phases
    • Biphenotypic leukaemia at any phase of chemotherapy
    • Lymphoblastic lymphoma in induction and consolidation phases
    • B-cell and anaplastic lymphoma receiving high-intensity chemotherapy
    • Solid tumours receiving high-intensity chemotherapy
    • Relapsed leukaemia at any phase of treatment
  2. Episode of febrile neutropenia (FN), defined as a single axillary temperature ≥38.0°C in a patient with an absolute neutrophil count (ANC) <500 neutrophils/mm³, or expected to fall below this value within the next 48-72 hours.
  3. Antibiotic treatment initiated for the current FN episode (routine antimicrobial prophylaxis is allowed, as well as teicoplanin 3 days/week for patients with AML included in the CHIP-AML-2022 protocol and therefore in the Pro-teico study).

  4. Low risk of invasive bacterial infection (IBI) at the start of the FN episode. Patients must meet all of the following:

    • CRP <9 mg/dL
    • PCT <0.5 ng/mL
    • Absence of hypotension
  5. No microbiologically documented bacterial infection 48-72 hours after the FN episode.

  6. Good clinical evolution 48-72 hours after the FN episode, defined as:

    • Afebrile for >48 hours (axillary temperature <38°C)
    • Haemodynamically stable
    • Stable paediatric early warning score (PEWS)
  7. CRP <5 mg/dL, or CRP <9 mg/dL and PCT <0.5 ng/mL, with decreasing trend at the time of randomisation (values will be assessed on day 3 and day 5 after the FN episode).
  8. ANC <500 neutrophils/mm³ at the time of randomisation.
  9. Signed informed consent from the patient and/or parent(s)/legal representative(s).
  10. Patient and/or parent(s)/legal representative(s) must have sufficient reading and writing skills to understand and provide consent to participate in the study.
  11. Patient and/or parent(s)/legal representative(s) must be considered reliable and capable of adhering to the protocol.

Exclusion Criteria:

  1. Antibiotic treatment at the time of the FN episode different from that used prophylactically.
  2. Empirical antibiotic treatment different from that recommended in international guidelines.
  3. Patient with poor clinical evolution during the first 12 hours (hemodynamic instability, PICU admission, death).
  4. Active participation in the same study at the onset of the current FN episode.
  5. Active participation in another clinical trial that, in the investigators' opinion, may interfere with the assessment of the results.
  6. Any condition which, in the investigator's opinion, makes study participation unsuitable for the patient or could limit, prevent, or confound the assessments planned in the protocol.
  7. Female patients who are pregnant or breastfeeding

学习计划

本节提供研究计划的详细信息，包括研究的设计方式和研究的衡量标准。

研究是如何设计的？

设计细节

  • 主要用途：治疗
  • 分配：随机化
  • 介入模型：并行分配
  • 屏蔽：无（打开标签）

武器和干预

参与者组/臂
干预/治疗
实验性的：Early Discontinuation of Antibiotics
Participants assigned to this arm will have intravenous antibiotic therapy discontinued within 24 hours after randomization, provided they meet all clinical stability and low-risk criteria. Patients may be discharged if no other clinical reasons require hospitalization. Antibiotics may be reintroduced if fever recurs or if clinical deterioration suggests infection.
药品：Early Discontinuation of Antibiotics
Participants assigned to this intervention will stop intravenous antibiotic therapy within 24 hours after randomization, provided they meet all required clinical stability and low-risk criteria at 48-72 hours (or day 5) after the febrile neutropenia episode. Patients may be discharged once clinically appropriate. Antibiotics may be restarted if fever recurs or clinical deterioration suggests infection.
其他名称：
  • Drug stop within 24 hours after randomization:Piperacillin-tazobactam, amikacin, meropenem, cefepime, ceftazidime, vancomycin, teicoplanin, ciprofloxacin, levofloxacine and metronidazole
有源比较器：Standard Antibiotic Strategy
Participants assigned to this arm will continue antibiotic therapy for at least 7 days and/or until signs of marrow recovery are present (ANC ≥100/mm³), according to each center's standard protocol. Hospital discharge will occur once clinical criteria permit.
药品：Standard Antibiotic Continuation Strategy
Continuation of antibiotic therapy for at least 7 days and/or until marrow recovery (ANC ≥100/mm³) following standard institutional protocols. Therapy may be extended depending on clinical assessment.
其他名称：
  • Drug continuation for at least 7d and/or until marrow recovery:Piperacillin-tazobactam,amikacin,meropenem,cefepime, ceftazidime, vancomycin, teicoplanin, ciprofloxacin, levofloxacine and metronidazole

研究衡量的是什么？

主要结果指标

结果测量
措施说明
大体时间
Composite rate of adverse outcomes attributable to invasive or clinically significant bacterial infection
大体时间：Day 0 (randomization) to Day 28
Composite endpoint including any of the following events: death, pediatric intensive care unit admission, sepsis or septic shock, microbiologically documented bacterial infection, or radiologically confirmed pneumonia. The proportion of participants experiencing at least one component of the composite endpoint will be compared between the early discontinuation arm and the standard continuation arm to assess non-inferiority in safety.
Day 0 (randomization) to Day 28

次要结果测量

结果测量
措施说明
大体时间
Number of days of antibiotic therapy
大体时间：From Day 0 to Day 28
Total duration of systemic antimicrobial therapy will be compared between the early-stop arm and the standard-therapy arm to evaluate reduction in antibiotic exposure.
From Day 0 to Day 28
Incidence of antibiotic-related adverse events
大体时间：Up to Day 28
Number of participants experiencing adverse effects attributable to antimicrobial therapy, including drug toxicity or complications associated with prolonged antibiotic use.
Up to Day 28
Predictive performance of C-reactive protein (CRP) for invasive bacterial infection
大体时间：Measured at episode onset, at 48-72 hours, and optionally on Day 5
Retrospective evaluation of CRP levels as a predictor of invasive bacterial infection in pediatric high-risk febrile neutropenia episodes.
Measured at episode onset, at 48-72 hours, and optionally on Day 5
Predictive performance of procalcitonin (PCT) for invasive bacterial infection
大体时间：Measured at episode onset, at 48-72 hours, and optionally on Day 5
Retrospective evaluation of procalcitonin levels as a predictor of invasive bacterial infection in pediatric high-risk febrile neutropenia episodes.
Measured at episode onset, at 48-72 hours, and optionally on Day 5
Predictive performance of interleukin-8 (IL-8) for invasive bacterial infection
大体时间：Measured at episode onset and at 48-72 hours
Retrospective evaluation of IL-8 levels as a predictor of invasive bacterial infection in pediatric high-risk febrile neutropenia episodes.
Measured at episode onset and at 48-72 hours
Validation of an invasive bacterial infection (IBI) prediction model
大体时间：Day 0 to Day 28
Evaluation of a predictive model combining clinical variables, biomarker measurements, and risk scores to classify pediatric high-risk febrile neutropenia episodes according to risk of invasive bacterial infection.
Day 0 to Day 28

合作者和调查者

在这里您可以找到参与这项研究的人员和组织。

赞助

Hospital Universitari Vall d'Hebron Research Institute

出版物和有用的链接

负责输入研究信息的人员自愿提供这些出版物。这些可能与研究有关。

一般刊物

研究记录日期

这些日期跟踪向 ClinicalTrials.gov 提交研究记录和摘要结果的进度。研究记录和报告的结果由国家医学图书馆 (NLM) 审查，以确保它们在发布到公共网站之前符合特定的质量控制标准。

研究主要日期

学习开始 (估计的)

2026年6月1日

初级完成 (估计的)

2028年7月1日

研究完成 (估计的)

2028年7月1日

研究注册日期

首次提交

2026年2月16日

首先提交符合 QC 标准的

2026年5月13日

首次发布 (实际的)

2026年5月15日

研究记录更新

最后更新发布 (实际的)

2026年5月15日

上次提交的符合 QC 标准的更新

2026年5月13日

最后验证

2026年5月1日

更多信息

与本研究相关的术语

关键字

其他相关的 MeSH 术语

其他研究编号

  • EU-CT2025-524264-38-00

药物和器械信息、研究文件

研究美国 FDA 监管的药品

不

研究美国 FDA 监管的设备产品

不

在美国制造并从美国出口的产品

不

此信息直接从 clinicaltrials.gov 网站检索，没有任何更改。如果您有任何更改、删除或更新研究详细信息的请求，请联系 register@clinicaltrials.gov. clinicaltrials.gov 上实施更改，我们的网站上也会自动更新.

订阅