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Study identifier: NCT07134491 Synced from ClinicalTrials.gov · July 29, 2026
● Recruiting

Peripheral and Intrarenal B Cell Study in Antibody Mediated Transplant Rejection : Phenotypic and Transcriptional Study, Study of Reactivity

Condition: Antibody Mediated Rejection After Kidney Transplantation  ·  Sponsor: Assistance Publique - Hôpitaux de Paris

PhaseN/A
Planned participants45
Who can joinAll sexes, 18 Years to no upper limit
Healthy volunteersNo

About this study

Humoral rejection of kidney transplants is responsible for a large number of kidney graft losses in a context of increasing shortage. Although it has been established that it is largely mediated by the alloreactive B lymphocyte, anti-B therapies are only partially effective. The mechanisms behind the loss of tolerance are also poorly understood, and the triggers of rejection remain to be elucidated. During this study, patients admitted for kidney graft biopsy for suspicion of rejection will be included ; patients presenting non inflammatory biopsies will be studied as controls. B cells will be extracted and cultured. Their antibodies will be studied along with reactivity towards HLA, non HLA targets and the gut microbiome. The same study will be led for late rejections needing graft removal : B cells extraction, culture, antibodies reactivity testing. Controls will be graft removal for non inflammatory causes. In both cases hight throughput sequencing the immunoglobulin genes will be performed.

This description comes directly from the study's public registry record.

Talk to the study team

Yanis TAMZALI, MD, MsC  ·  681402564  ·  yanis.tamzali@aphp.fr

Always discuss trial participation with your own doctor first.

Locations (2)

Nephrology department, Hôpital Pitié SalpêtièreParis, FranceRecruiting
Nephrology department, Tenon hospitalParis, FranceNot Yet Recruiting

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Source record: clinicaltrials.gov/study/NCT07134491