Thymus Transplantation With Immunosuppression — 884  

DiGeorge Syndrome Clinical Trial

Official title: Thymus Transplantation With Immunosuppression, #884

Status Completed

Clinical Trial Summary

The research purpose is to determine if thymus transplantation with immunosuppression is a safe and effective treatment for complete DiGeorge anomaly. The research includes studies to evaluate whether thymus transplantation results in complete DiGeorge anomaly subjects developing a normal immune system.

Clinical Trial Description

DiGeorge anomaly is a complex of cardiac defects, parathyroid deficiency, and thymus absence, resulting in profound T-cell deficiency. There is a spectrum of disease in DiGeorge anomaly with respect to all three defects. For complete DiGeorge anomaly subjects with severe T cell defect, the PI had shown that thymus transplantation is safe and efficacious without pretransplantation immunosuppression and with pretransplantation Thymoglobulin and cyclosporine.

Some DiGeorge patients have very poor T cell function and are at risk of death from infection or other immune problems; however, these patients have enough T cell function to reject grafts. This protocol was designed for these patients. Atypical phenotype and some typical phenotype DiGeorge subjects were included in this protocol.

Atypical complete DiGeorge anomaly patients have rash, lymphadenopathy, and oligoclonal T cell proliferations. The T cells have no markers of thymic function (they do not co-express CD45RA and CD62L; they do not contain T cell receptor rearrangement excision circles, TRECs).

Typical complete DiGeorge anomaly patients in this protocol are those whose PHA response >20 fold. Although these patients have very low T cell function, it may be enough to reject a transplant, so Thymoglobulin was used. ;

Related Conditions & MeSH terms

• Complete DiGeorge Anomaly
• Complete DiGeorge Syndrome
• Congenital Abnormalities
• Craniosynostoses
• DiGeorge Anomaly
• DiGeorge Syndrome
• Marfan Syndrome
• Syndrome

• NCT number: NCT00579709
• Study type: Interventional
• Source: Enzyvant Therapeutics GmBH
• Status: Completed
• Phase: Phase 1
• Start date: July 2002
• Completion date: December 2019