Pilot Study of High Dose Liposomal Amphotericin B Efficacy in Initial Zygomycosis Treatment (AMBIZYGO)

March 2, 2026 updated by: Assistance Publique - Hôpitaux de Paris

AMBIZYGO: Efficacy of High Dose [10 mg/kg/j] Liposomal Amphotericin B (Ambisome)Efficacy in Initial Zygomycosis Treatment:Phase II Trial

Evaluation after 4 weeks of treatment or at end of treatment if it occurs before. Efficacy will be defined as objective responses; complete and partial response.

Study Overview

Status

Completed

Conditions

Intervention / Treatment

Detailed Description

Primary objective: Efficacy of 4 weeks of liposomal amphotericin B (AmBisome®) at high dose [10 mg/kg/j] or at maximal tolerable dose in initial zygomycosis treatment. Evaluation after 4 weeks of treatment or at end of treatment if it occurs before. Efficacy will be defined as objective responses; complete and partial response.

Secondary objectives: Efficacy, tolerance and survival after 15 days of treatment, cumulative dose of AmBisome® necessary to obtain objective response, efficacy in operated and non operated patients, tolerance after 4 and 12 weeks treatment, survival, and relapse rate at 6 months of 4 weeks of liposomal amphotericin B (AmBisome®) at high dose [10 mg/kg/j] or at maximal tolerable dose.

Scheme : prospective, multicentric, non comparative therapeutic pilot study.

Inclusion criteria: Presence on a tissue biopsy of large non septated hyphae compatible with zygomycete or presence of a zygomycete in culture associated with clinical or radiological abnormalities compatible with fungal invasive infection.

Exclusion criteria: Life expectancy below 72 hours, pregnancy, breast feeding, polyene hypersensitivity, absence of histologic or mycologic zygomycosis documentation, absence of informed consent, previous treatment with polyene or other antifungal active on zygomycete (posaconazole, itraconazole) over 5 days during the month previous inclusion.

Treatment : AmBisome® 10 mg/kg/j monotherapy during at least 15 days, then AmBisome® at maximal tolerable dose during 15 days associated with early optimal surgical treatment. After the first treatment month, following treatment is decided by referent physician.

Study Type

Interventional

Enrollment (Actual)

40

Phase

  • Phase 2

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

  • France
      • Paris, France, 75015
        • Necker Hospital
      • Paris, France, 75015
        • Hôpital Necker - Service des Maladies Infectieuses et Tropicales

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

  • Child
  • Adult
  • Older Adult

Accepts Healthy Volunteers

No

Description

Inclusion Criteria:

  • Presence on a tissue biopsy of large non septated hyphae compatible with zygomycete
  • Presence of a zygomycete in culture associated with clinical or radiological abnormalities compatible with fungal invasive infection.

Exclusion Criteria:

  • Life expectancy below 72 hours,
  • Pregnancy, breast feeding,
  • Polyene hypersensitivity,
  • Absence of histologic or mycologic zygomycosis documentation,
  • Absence of informed consent,
  • Previous treatment with polyene or other antifungal active on zygomycete (posaconazole, itraconazole) over 5 days during the month previous inclusion

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Treatment
  • Allocation: N/A
  • Interventional Model: Single Group Assignment
  • Masking: None (Open Label)

Arms and Interventions

Participant Group / Arm
Intervention / Treatment
Experimental: amphotericin B
Treatment with high dosage of amphotericin B liposomal 10 mg/kg/day during 4 weeks
Drug: Liposomal Amphotericin B
high dosage
Other Names:
  • high dosage

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Time Frame
Evaluation after 4 weeks of treatment or at end of treatment if it occurs before. Efficacy will be defined as objective responses; complete and partial response.
Time Frame: 4 weeks
4 weeks

Secondary Outcome Measures

Outcome Measure
Time Frame
Efficacy, tolerance and survival after 15 days of treatment, cumulative dose of AmBisome® necessary to obtain objective response.
Time Frame: 12 weeks
12 weeks

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Assistance Publique - Hôpitaux de Paris

Collaborators

URC-CIC Paris Descartes Necker Cochin

Investigators

  • Principal Investigator: Olivier Lortholary, MD, PhD, Assistance Publique Hopitaux de Paris

Publications and helpful links

The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.

General Publications

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start

June 1, 2007

Primary Completion (Actual)

June 1, 2011

Study Completion (Actual)

March 1, 2013

Study Registration Dates

First Submitted

April 30, 2007

First Submitted That Met QC Criteria

April 30, 2007

First Posted (Estimated)

May 1, 2007

Study Record Updates

Last Update Posted (Actual)

March 4, 2026

Last Update Submitted That Met QC Criteria

March 2, 2026

Last Verified

February 1, 2026

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

  • P060603

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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