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Antibiotikabehandlingens varighed og resultater hos patienter med højrisiko febril neutropeni (PERaSTrA)

23. september 2026 opdateret af: Valeria Cento

Passende håndtering af bakteriæmisk febril neutropeni hos højrisiko-hematologiske patienter. Sammenhæng mellem varigheden af antibiotikaadministration, udfald og resistensprofil

The goal of this clinical trial is to learn if a personalized duration of antibiotic therapy, based on clinical stability, is as effective as a standard duration of at least 10 days in hospitalized patients with hematologic malignancies (such as leukemia or lymphoma) who develop febrile neutropenia and Gram-negative bacteraemia.

The main questions it aims to answer are:

  • Can a personalized antibiotic duration increase the number of days free from anti-Gram-negative therapy within 28 days without compromising patient safety?
  • How does the duration of antibiotic therapy (short vs. prolonged) affect the rate and modality of gut microbiota reconstitution?

Researchers will compare:

  • Group A (Personalized Duration): Antibiotics are stopped after the patient maintains clinical stability (no fever and stable vital signs) for 72 consecutive hours.
  • Group B (Standard of Care): Antibiotics are continued for a standard duration, typically at least 10 days, based on current clinical surveys and physician decision.

Participants will:

  • Be randomized to receive either the personalized or the standard duration of antibiotic therapy once a Gram-negative infection is confirmed in the blood.
  • Be monitored for 28 days to assess for new fever episodes, recurrence of infection, and overall survival.
  • If participating in the microbiological sub-study, provide biological samples (blood, feces, and rectal swabs) at specific time points (at the onset of fever, at the end of treatment, and at day 28).
  • Undergo specialized laboratory testing (Whole Metagenomic Sequencing) on the collected samples to evaluate the evolution of their intestinal and blood microbiota and the presence of antibiotic-resistant genes.

Studieoversigt

Status

Rekruttering

Betingelser

Intervention / Behandling

Detaljeret beskrivelse

This is a multicenter, open-label, randomized controlled trial. Upon confirmation of Gram-negative bacteraemia, eligible patients are randomized 1:1 to one of two treatment strategies:

  • Experimental Arm (Personalized Duration): Antibiotic therapy is discontinued once the patient achieves and maintains clinical stability for 72 consecutive hours. Clinical stability is defined as apyrexia (Tc < 38°C) for at least 48 hours and a stable or improving qSOFA score.
  • Control Arm (Standard of Care): Antibiotic therapy duration follows local clinical practice, with a suggested minimum duration of 10 days, consistent with current European and Asian hematological guidelines.

In parallel, a prospective observational microbiological sub-study will utilize Shotgun Metagenomic Next-Generation Sequencing (mNGS) to analyze the evolution of the intestinal and blood microbiota. The goal is to compare the rate of MDR organism colonization and the reconstitution of the healthy microbiome between the two antibiotic duration strategies.

All participants will undergo clinical monitoring until day 28. For those enrolled in the sub-study, biological samples (stool, rectal swabs, and blood) will be collected at baseline (V1), at the end of treatment (V4), and at the end of the study (V5). These samples will be analyzed to identify clinically significant bacteria and antibiotic-resistance genes.

Undersøgelsestype

Interventionel

Tilmelding (Anslået)

172

Fase

  • Ikke anvendelig

Kontakter og lokationer

Dette afsnit indeholder kontaktoplysninger for dem, der udfører undersøgelsen, og oplysninger om, hvor denne undersøgelse udføres.

Studiekontakt

Undersøgelse Kontakt Backup

Studiesteder

    • Milan
      • Rozzano, Milan, Italien, 20089
        • Rekruttering
        • Microbiology and Virology - IRCCS Humanitas Research Hospital
        • Kontakt:

Deltagelseskriterier

Forskere leder efter personer, der passer til en bestemt beskrivelse, kaldet berettigelseskriterier. Nogle eksempler på disse kriterier er en persons generelle helbredstilstand eller tidligere behandlinger.

Berettigelseskriterier

Aldre berettiget til at studere

18 år og ældre (Voksen, Ældre voksen)

Tager imod sunde frivillige

Ingen

Køn, der er berettiget til at studere

Alle

Beskrivelse

Inclusion Criteria:

  • Diagnosed with a hematologic malignancy that is candidate for treatment with chemotherapy or bone marrow transplantation or chimeric antigen receptor T cell therapy (CAR-T)
  • Diagnosis of febrile neutropenia defined according to the guidelines of the Infectious Disease Society of America, IDSA; ref: Freifeld, A.G., et al., Clinical practice guideline for the use of antimicrobial agents in neutropenic patients with cancer: 2010 update by the infectious diseases society of america. Clin Infect Dis, 2011. 52(4): p. e56-93.) as: Fever: single record of oral temperature >=38.3°C or a temperature >=38.0°C sustained over a period of one hour; Neutropenia: absolute neutrophil count < 1000 cells/microL; Expected duration of neutropenia >= 7 days
  • Diagnosis of bacteraemia defined by positive blood cultures (at least 1 vial positive for a non-contaminating microorganism)
  • Isolation of Gram-Negative species

Exclusion Criteria:

  • Contextual diagnosis of pneumonia
  • Contextual diagnosis of intra-abdominal infection, in particular: neutropenic enterocolitis/typhlitis or biliary tract infection
  • Persistently positive blood cultures at randomization
  • Any condition that endangers the safety of the patient based on the judgment of the treating physician

Studieplan

Dette afsnit indeholder detaljer om studieplanen, herunder hvordan undersøgelsen er designet, og hvad undersøgelsen måler.

Hvordan er undersøgelsen tilrettelagt?

Design detaljer

  • Primært formål: Behandling
  • Tildeling: Randomiseret
  • Interventionel model: Parallel tildeling
  • Maskning: Ingen (Åben etiket)

Våben og indgreb

Deltagergruppe / Arm
Intervention / Behandling
Aktiv komparator: Standard of Care

Standard of care antibiotic therapy with a suggested minimum duration of 10 days.

This intervention follows the standard clinical practice for treating Gram-negative bacteraemia in hematological patients. The duration of therapy is not fixed by a stability-driven rule but is based on the treating physician's decision, with a suggested minimum of 10 days.

Andre navne:
  • B
Eksperimentel: Personalized Duration

Patients in this arm will receive antibiotic therapy for a duration guided by clinical stability. Antibiotics will be discontinued after 72 consecutive hours of clinical stability, defined as apyrexia (Tc < 38°C) for at least 48 hours and stable or improved qSOFA score.

A therapeutic strategy where the duration of antibiotic treatment for Gram-negative bacteraemia is determined by the achievement of clinical stability (defined as apyrexia for 48h and stable/improved qSOFA score) maintained for 72 consecutive hours

Andre navne:
  • EN

Hvad måler undersøgelsen?

Primære resultatmål

Resultatmål
Foranstaltningsbeskrivelse
Tidsramme
Days Free from Anti-Gram-Negative Antibiotic Therapy within 28 days
Tidsramme: From the date of index blood culture collection (Day 0) up to Day 28

Number of days that the participant is alive and free from any anti-Gram-negative antibiotic therapy, calculated from the date of the index blood culture collection (onset of infection) up to Day 28. Antibiotics active exclusively on Gram-positive bacteria (e.g., glycopeptides, daptomycin) and fluoroquinolone prophylaxis are excluded from this calculation.

From the date of index blood culture collection (Day 0) up to Day 28

Sekundære resultatmål

Resultatmål
Foranstaltningsbeskrivelse
Tidsramme
Incidence of New Fever Episodes
Tidsramme: From the end of antibiotic therapy up to Day 28

Number of participants experiencing a new episode of fever (Tc ≥ 38.3°C) occurring after a period of apyrexia of at least 72 hours

From the end of antibiotic therapy up to Day 28
28-day All-cause Mortality
Tidsramme: Up to Day 28

Number of participants who died from any cause within 28 days from the onset of the index infection (date of first positive blood culture)

Up to Day 28
Relapse of Bloodstream Infection (BSI) by the Same Pathogen
Tidsramme: From the end of antibiotic therapy up to Day 28

Number of participants with a new positive blood culture for the same Gram-negative pathogen identified in the index episode

From the end of antibiotic therapy up to Day 28
Recurrent BSI by Gram-negative Bacteria
Tidsramme: From the end of antibiotic therapy up to Day 28

Number of participants experiencing a new episode of bloodstream infection caused by any Gram-negative bacteria different from the index pathogen

From the end of antibiotic therapy up to Day 28
Emergence of Multi-Drug Resistant Organisms (MDRO)
Tidsramme: Within 90 days from the index blood culture collection

Number of participants with isolation of a new MDRO from recurrent positive blood cultures, or evidence of a worsened resistance profile compared to the index isolate

Within 90 days from the index blood culture collection
Incidence of Clostridioides difficile Infection (CDI)
Tidsramme: Up to Day 28

Number of participants with a laboratory-confirmed diagnosis of Clostridioides difficile infection

Up to Day 28
Incidence of Antibiotic-Related Adverse Events
Tidsramme: Up to Day 28

Number of participants experiencing adverse events (AE) judged by the investigator to be related to the antibiotic therapy (e.g., allergic reactions, renal toxicity)

Up to Day 28

Samarbejdspartnere og efterforskere

Det er her, du vil finde personer og organisationer, der er involveret i denne undersøgelse.

Sponsor

Samarbejdspartnere

Efterforskere

  • Ledende efterforsker: Valeria Cento, MD, PhD, Humanitas University

Publikationer og nyttige links

Den person, der er ansvarlig for at indtaste oplysninger om undersøgelsen, leverer frivilligt disse publikationer. Disse kan handle om alt relateret til undersøgelsen.

Generelle publikationer

Datoer for undersøgelser

Disse datoer sporer fremskridtene for indsendelser af undersøgelsesrekord og resumeresultater til ClinicalTrials.gov. Studieregistreringer og rapporterede resultater gennemgås af National Library of Medicine (NLM) for at sikre, at de opfylder specifikke kvalitetskontrolstandarder, før de offentliggøres på den offentlige hjemmeside.

Studer store datoer

Studiestart (Faktiske)

2. februar 2026

Primær færdiggørelse (Anslået)

28. februar 2028

Studieafslutning (Anslået)

30. november 2028

Datoer for studieregistrering

Først indsendt

20. januar 2026

Først indsendt, der opfyldte QC-kriterier

20. januar 2026

Først opslået (Faktiske)

28. januar 2026

Opdateringer af undersøgelsesjournaler

Sidste opdatering sendt (Faktiske)

24. september 2026

Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier

23. september 2026

Sidst verificeret

1. september 2026

Mere information

Begreber relateret til denne undersøgelse

Andre undersøgelses-id-numre

  • PERaSTrA

Lægemiddel- og udstyrsoplysninger, undersøgelsesdokumenter

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Studerer et amerikansk FDA-reguleret enhedsprodukt

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