- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT04870437
Impact of ExtraCorporeal Phototherapy (ECP) on Auxiliary Follicular T-lymphocytes and Circulating B-lymphocytes During Chronic AntiBody-Mediated Rejection in Kidney Transplantation. (IPECAM)
Impact of ExtraCorporeal Phototherapy (ECP) on Auxiliary Follicular T-lymphocytes and Circulating B-lymphocytes During Chronic AntiBody-Mediated Rejection in Kidney Transplantation: IPECAM
Chronic AntiBody-Mediated Rejection (cABMR) is the leading cause of late kidney transplant loss (after 1 year of kidney transplantation). Its therapeutic management is poorly codified and there is currently no treatment referring.
Extracorporeal phototherapy (ECP) is a therapeutic apheresis that involves purifying mononucleated cells in the blood, exposing them to UltraViolet A (UVA) and re-injecting them to the patient. This treatment is used as common care in the first line as part of the treatment of cutaneous T lymphoma and in the second line as part of the graft versus host reaction after bone marrow allograft.
The mechanisms underlying the action of the ECP are not well known. They are mediated by the reinjection of cells exposed to UVA which enter apoptosis and induce immunomodulation. Recent work during cABMR shows that TFH lymphocytes, the maturing population of B lymphocytes, are deregulated and activated.
The hypothesis is that ECP can modulate T Follicular Helper (TFH) lymphocytes during cABMR.
Study Overview
Status
Conditions
Intervention / Treatment
Study Type
Enrollment (Anticipated)
Phase
- Not Applicable
Contacts and Locations
Study Contact
- Name: Emma BLANCHET
- Phone Number: +33 2 41 35 63 38
- Email: EmBlanchet@chu-angers.fr
Study Contact Backup
- Name: Jean-François AUGUSTO, Pr
- Phone Number: +33 2 41 35 50 63
- Email: JFAugusto@chu-angers.fr
Participation Criteria
Eligibility Criteria
Ages Eligible for Study
Accepts Healthy Volunteers
Genders Eligible for Study
Description
Inclusion Criteria:
- ECP treatment decision based on transplant team habits (care management)
- Age ≥ 18 years
- Affiliation to a French social security scheme
- Kidney transplant at least 6 months prior to inclusion
cABMR proven by a renal graft biopsy less than 3 months and meeting the following histological criteria:
- allograft glomerulopathy (cg>0, and maximum score cg2) or intimal fibrosis
- C4d positive or ptc+g greater than or equal to 2
- Presence of Donor Specific Antibody (DSA)
- Interstitial Fibrosis and Tubular Atrophy (IFTA) less than or equal to 2
- Glomerular filtration rate > 30 mL/min/1.73 m2
- Signed informed consent to participate in the study
Exclusion Criteria:
- Active infection or infection with hepatitis B, C or HIV virus
- Pregnant, breastfeeding or parturient woman
- Person deprived of liberty by judicial or administrative decision
- Person receiving psychiatric care under duress
- Person subject to legal protection
- Person out of state to express consent
Study Plan
How is the study designed?
Design Details
- Primary Purpose: Other
- Allocation: N/A
- Interventional Model: Single Group Assignment
- Masking: None (Open Label)
Arms and Interventions
Participant Group / Arm |
Intervention / Treatment |
---|---|
Experimental: Extracorporeal phototherapy
|
The principle of ECP is to collect mononucleated cells from the blood by centrifugation.
After purification, the mononucleated cells are incubated ex-vivo with a photo-activatable DNA intercalating agent (8-methoxypsoralen, UVADEX®), then re-injected to the patient.
|
What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Frequency of TFH cells and their activation markers
Time Frame: From the 1st session of ECP to 1 year after the 1st session
|
Variation in the frequency of TFH cells and their activation markers under treatment.
|
From the 1st session of ECP to 1 year after the 1st session
|
Secondary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Subsequent ECP response in patients with cABMR
Time Frame: 3 months of treatment per ECP
|
Study of the 3-month TFH/TFR value of ECP treatment as a marker for subsequent ECP response in patients with cABMR
|
3 months of treatment per ECP
|
Concentration of pro and anti-inflammatory cytokines
Time Frame: From the 1st session of ECP to 1 year after the 1st session
|
Study of the concentration of pro-inflammatory cytokines (IL-6, TNFα, IL-1β, IL-17, IFN-gamma, IL-21, IL-12, IL-17, CXCL13) and anti-inflammatory cytokines (IL10, TGF-b) over time in ECP
|
From the 1st session of ECP to 1 year after the 1st session
|
Concentration of circulating B-cell populations
Time Frame: From the 1st session of ECP to 1 year after the 1st session
|
Study of the concentration of circulating B-cell populations due to ECP
|
From the 1st session of ECP to 1 year after the 1st session
|
Measurement of genetic markers in TFH cells
Time Frame: At 1 week of the 1st session of ECP and at 3 month after the 1st session
|
Study of genetic markers in TFH cells in cell co-culture in vitro to describe their function
|
At 1 week of the 1st session of ECP and at 3 month after the 1st session
|
Comparison of clinical data of patients
Time Frame: From the 1st session of ECP to 1 year after the 1st session
|
Clinical measures (medical examinations) of patients
|
From the 1st session of ECP to 1 year after the 1st session
|
Comparison of biological data of patients
Time Frame: From the 1st session of ECP to 1 year after the 1st session
|
Biological measures (blood samples) of patients
|
From the 1st session of ECP to 1 year after the 1st session
|
Collaborators and Investigators
Sponsor
Collaborators
Study record dates
Study Major Dates
Study Start (Anticipated)
Primary Completion (Anticipated)
Study Completion (Anticipated)
Study Registration Dates
First Submitted
First Submitted That Met QC Criteria
First Posted (Actual)
Study Record Updates
Last Update Posted (Actual)
Last Update Submitted That Met QC Criteria
Last Verified
More Information
Terms related to this study
Other Study ID Numbers
- 2021-A00580-41
Plan for Individual participant data (IPD)
Plan to Share Individual Participant Data (IPD)?
Drug and device information, study documents
Studies a U.S. FDA-regulated drug product
Studies a U.S. FDA-regulated device product
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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