HLA-mismatched Microtransplantation Without Immunosuppressive Treatment in Patients With Myeloid Hemopathies (MICROSTEM)

March 11, 2026 updated by: Institut Paoli-Calmettes
This study aims at evaluating the safety of an approach based on HLA-mismatched Microtransplantation without immunosuppressive treatment in patients With myeloid hemopathies who are ineligible to conventional allograft

Study Overview

Status

Completed

Conditions

Intervention / Treatment

Study Type

Interventional

Enrollment (Actual)

25

Phase

  • Phase 1

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
    • Bouches du Rhône
      • Marseille, Bouches du Rhône, France, 13009
        • Institut Paoli Calmettes

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

18 years and older (Adult, Older Adult)

Accepts Healthy Volunteers

No

Description

Inclusion Criteria:

  • Age> or = 65 years with a myeloid hemopathy in Complete Remission or Complete remission with incomplete hematological recovery or Age<65 years with an ineligibility to allograft (contraindication to conditioning)
  • HLA-partially matched family donors
  • Affiliated to(or beneficiary of) the Social Security
  • Informed consent signed

Exclusion Criteria:

  • AML3
  • Previous Hematopoietic Stem Cell TRansplantation
  • Uncontrolled infection -PS>3 -Other progressive cancer
  • Psychiatric disease
  • Vulnerable person or unable to provide informed consent
  • Emergency
  • Unable to comply with required study follow up

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: HLA-mismatched microtransplantation
HLA-mismatched microtransplantation without immunosuppressive treatment
Biological: HLA-mismatched microtransplantation
3 administrations of hematopoietic stem cells without immunosupression

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Occurrence of acute Graft versus Host disease after a HLA-mismatched transplantation without an immunosuppressive treatment
Time Frame: 100 days after transplantation
Cumulative incidence of acute GVH (grade 1 to 4)
100 days after transplantation

Collaborators and Investigators

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

Sponsor

Institut Paoli-Calmettes

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 (Actual)

March 9, 2018

Primary Completion (Actual)

January 7, 2026

Study Completion (Actual)

January 7, 2026

Study Registration Dates

First Submitted

July 25, 2017

First Submitted That Met QC Criteria

July 25, 2017

First Posted (Actual)

July 27, 2017

Study Record Updates

Last Update Posted (Actual)

March 12, 2026

Last Update Submitted That Met QC Criteria

March 11, 2026

Last Verified

March 1, 2026

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

  • MICROSTEM- IPC 2016-013

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

No

product manufactured in and exported from the U.S.

No

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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