Detection and Cytotoxic T Lymphocyte Therapy of Post-Transplant Lymphoproliferative Disorder After Liver Transplant

January 12, 2010 updated by: National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK)
Despite advances in medical and gene therapy, orthotopic liver transplantation remains the only definitive therapeutic option for children with end-stage liver disease. Recent advances in pre-, intra-, and early post-transplant care have resulted in a dramatic improvement in survival of the pediatric liver transplant patient. The broad long-range goal of our research program is directed at enhancing the patient's long-term survival. Our primary focus relates to obligate life-long immunosuppression, with its inherent complications including severe infection and development of cancer. These two complications come together in a single disease, Epstein-Barr Virus (EBV)- associated post-transplant lymphoproliferative disorder (PTLD). EBV, a latent human lymphotrophic herpes virus infects and immortalizes B cells. Primary infection usually occurs via salivary exchange and results in a mild, self-limited illness followed by life-long EBV-specific T cell controlled EBV latency. T cell-based immunosuppression prevents allograft rejection, however, it also suppresses cytotoxic T lymphocyte (CTL) function, generating an environment in which EBV-infected cells can proliferate. Patients receiving life-long T cell-based immunosuppression have an increased risk of developing PTLD due to their inability to produce normal immunoregulatory responses. This disease is particularly devastating to the pediatric patient as its incidence is at least 4-fold greater than in the adult liver transplant patient population. In fact, PTLD is the number one cause of death following pediatric liver transplantation. At this time, there is no definitive method of prospectively detecting, diagnosing, or treating PTLD, and current treatment protocols place the liver allograft and patient at risk. Therefore, a diagnostic tool that is both sensitive and specific, and a treatment strategy with low toxicity are greatly needed to decrease the morbidity and mortality suffered by the pediatric liver transplant patient with PTLD. Our proposed studies will support our hypothesis that the combination of a persistently elevated EBV load in the setting of a diminished immune response to EBV will be an early risk indicator associated with PTLD development, and that pre-emptive treatment utilizing autologous adoptive EBV-specific CTL immunotherapy will provide a low toxicity treatment option.

Study Overview

Status

Completed

Conditions

Intervention / Treatment

Study Type

Interventional

Enrollment

50

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

  • United States
    • Texas
      • Houston, Texas, United States, 77030
        • Texas Children's Hospital

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

1 month to 21 years (Child, Adult)

Accepts Healthy Volunteers

Yes

Genders Eligible for Study

All

Description

Pediatric patients s/p orthotopic liver transplantation

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: Prevention
  • Allocation: Non-Randomized
  • Interventional Model: Single Group Assignment
  • Masking: None (Open Label)

Collaborators and Investigators

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

Sponsor

National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK)

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

May 1, 2002

Study Completion

December 1, 2007

Study Registration Dates

First Submitted

July 1, 2003

First Submitted That Met QC Criteria

July 2, 2003

First Posted (Estimate)

July 3, 2003

Study Record Updates

Last Update Posted (Estimate)

January 13, 2010

Last Update Submitted That Met QC Criteria

January 12, 2010

Last Verified

January 1, 2010

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

  • PTLD (completed)

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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