Prophylactic CD45RA-depleted DLI After Haploidentical Transplantation/RIC

NCT ID: NCT05066412

Last Updated: 2025-02-13

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

RECRUITING

Clinical Phase

PHASE1

Total Enrollment

12 participants

Study Classification

INTERVENTIONAL

Study Start Date

2024-11-26

Study Completion Date

2026-12-02

Brief Summary

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To assess safety of prophylactic escaladed dose of T naïve depleted (CD45RA depleted donor lymphocyte infusion, in patients with malignant hemopathie who received an allogeneic stem cell transplant from an haplo-identical donor, after a reduced intensity conditionning regiment.

Detailed Description

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Primary Objective is to determine whether the administration of prophylactic CD45RAneg (CD45RAneg) memory/effector T lymphocytes is feasible and safe in the early post-transplant period for patients with haploidentical transplant and RIC conditioning.

Donor lymphocytes are isolated from the original donor by non-mobilized mononuclear cell leukapheresis. Repetitive intravenous infusions (up to 3) of escalating doses of CD45RAneg cells, prepared from the leukapheresis by CliniMACS® technology (CD45RA-depletion), storage in vapor nitrogen.

Escalating doses of CD45RAneg cells, for patients with haploidentical graft, intervals of 6-8 weeks, if GvHD is absent starting ≥ 4 weeks from the day of transplantation.

Conditions

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Hematologic Malignancy Haplo-identical Stem Cell Transplantation

Study Design

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Allocation Method

NA

Intervention Model

SINGLE_GROUP

Primary Study Purpose

TREATMENT

Blinding Strategy

NONE

Study Groups

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Arm 1

Prophylactic CD45RA-depleted DLI

Group Type EXPERIMENTAL

CD45RAneg cells, prepared from mononuclear cell leukapheresis by CliniMACS® technology

Intervention Type OTHER

CD45RAneg cells, prepared from mononuclear cell leukapheresis by CliniMACS® technology

Interventions

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CD45RAneg cells, prepared from mononuclear cell leukapheresis by CliniMACS® technology

CD45RAneg cells, prepared from mononuclear cell leukapheresis by CliniMACS® technology

Intervention Type OTHER

Eligibility Criteria

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Inclusion Criteria

* Patients who received a stem cell graft from a haploidentical donor after RIC for hematologic malignancies
* Written informed consent of patient and donor obtained

Exclusion Criteria

* Participant taking Prednisone (or equivalent steroid)
* Participant taking Prednisone (or equivalent steroid)
* Participant taking Mycophenolate Mofetil
* Participant taking Cyclosporine/tacrolimus at therapeutic blood levels
* Progressive hematologic malignancy before transplant
* Second allogeneic transplant
* Acute GvHD ≥ grade 2
* Chronic moderate or severe GvHD (NIH consensus criteria)
* Donor aberrant CD45RA expression due to a polymorphism in CD45 gene
* Participation in another interventional clinical trial within 30 days prior to inclusion
* Pregnant or nursing women. Sexually active women with childbearing potential as well as sexually active male patients who are unwilling to use an effective method of contraception during participation in the study from time of inclusion until 2 months after last dose of CD45RAneg DLI infusion
* Inability to follow the procedures of the study, including, but not limited to, language problems, psychological disorders, dementia
Minimum Eligible Age

18 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No

Sponsors

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University Hospital, Geneva

OTHER

Sponsor Role lead

Responsible Party

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Anne-Claire Mamez

Principal Investigator

Responsibility Role PRINCIPAL_INVESTIGATOR

Locations

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HUG

Geneva, Canton of Geneva, Switzerland

Site Status RECRUITING

Countries

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Switzerland

Central Contacts

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Anne-Claire Mamez

Role: CONTACT

+41786656487

Facility Contacts

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Anne-Claire Mamez

Role: primary

+41795534996

Other Identifiers

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Cd45RA depleted DLI

Identifier Type: -

Identifier Source: org_study_id

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