Gene Transfer Therapy for Severe Combined Immunodeficieny Disease (SCID) Due to Adenosine Deaminase (ADA) Deficiency: A Natural History Study

March 3, 2008 updated by: National Human Genome Research Institute (NHGRI)

Treatment of Severe Combined Immunodeficiency Disease (SCID) Due to Adenosine Deaminase (ADA) Deficiency With Autologous Lymphocytes of CD34+ Cells Transduced With a Human ADA Gene: A Natural History Study

This study will monitor the long-term effects of gene therapy in patients with severe combined immunodeficiency disease (SCID) due to a deficiency in an enzyme called adenosine deaminase (ADA). It will also follow the course of disease in children who are not receiving gene therapy, but may have received enzyme replacement therapy with the drug PEG-ADA.

ADA is essential for the growth and proper functioning of infection-fighting white blood cells called T and B lymphocytes. Patients who lack this enzyme are, therefore, immune deficient and vulnerable to frequent infections. Injections of PEG-ADA may increase the number of immune cells and reduce infections, but this enzyme replacement therapy is not a definitive cure. In addition, patients may become resistant or allergic to the drug. Gene therapy, in which a normal ADA gene is inserted into the patient's cells, attempts to correcting the underlying cause of disease.

Patients with SCID due to ADA deficiency may be eligible for this study. Patients may or may not have received enzyme replacement therapy or gene transfer therapy, or both. Participants will have follow-up visits at the National Institutes of Health in Bethesda, Maryland, at least once a year for a physical examination, blood tests, and possibly the following additional procedures to evaluate immune function:

  1. Bone marrow sampling - A small amount of marrow from the hip bone is drawn (aspirated) through a needle. The procedure can be done under local anesthesia or light sedation.
  2. Injection of small amounts of fluids into the arm to study if the patient's lymphocytes respond normally.
  3. Administration of vaccination shots.
  4. Collection of white blood cells through apheresis - Whole blood is collected through a needle placed in an arm vein. The blood circulates through a machine that separates it into its components. The white cells are then removed, and the red cells, platelets and plasma are returned to the body, either through the same needle used to draw the blood or through a second needle placed in the other arm.
  5. Blood drawings to obtain and study the patient's lymphocytes.

Study Overview

Status

Completed

Conditions

Intervention / Treatment

Detailed Description

The primary purpose of this study is to continue to provide clinical follow-up for ADA-deficient patients treated with gene therapy under the original protocol 90-HG-0195 (IND 3624) and its amendments (IND 4647 and IND 5056). The objectives are the long-term monitoring of the beneficial effects of gene therapy and continued surveillance of potential adverse effects associated with the gene transfer procedures.

No new subjects will be enrolled in this protocol.

Study Type

Observational

Enrollment

10

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
    • Maryland
      • Bethesda, Maryland, United States, 20892
        • National Human Genome Research Institute (NHGRI)

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

  • Child
  • Adult
  • Older Adult

Accepts Healthy Volunteers

No

Genders Eligible for Study

All

Description

New patients will not be treated under protocol 90-HG-0195 as new and improved vectors and technologies have become available in the recent years.

New patients with ADA deficiency, however, may be enrolled in protocol 90-HG-0195 for clinical evaluation of their immune system and pre-treatment testing of transduction procedures.

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?

Collaborators and Investigators

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

Sponsor

National Human Genome Research Institute (NHGRI)

Publications and helpful links

The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.

General Publications

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

September 1, 1990

Study Completion

July 1, 2002

Study Registration Dates

First Submitted

November 3, 1999

First Submitted That Met QC Criteria

November 3, 1999

First Posted (Estimate)

November 4, 1999

Study Record Updates

Last Update Posted (Estimate)

March 4, 2008

Last Update Submitted That Met QC Criteria

March 3, 2008

Last Verified

July 1, 2002

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

  • 900195
  • 90-HG-0195

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.

Clinical Trials on Severe Combined Immunodeficiency

Clinical Trials on ADA PBSC

Search Similar Trials

Sponsors and Collaborators

Medical Conditions

Drug Interventions

CROs by country

CROs in Thailand

Conditions

Rare Diseases

Drug Interventions

Dietary Supplements

Sponsor/Collaborators

Locations

3
Subscribe