Long Term Safety Follow up of Haematopoietic Stem Cell Gene Therapy for the Wiskott Aldrich Syndrome (WASFUP)

May 31, 2021 updated by: Genethon

Long Term Safety Follow up of Patients Enrolled in the Phase I/II Clinical Trial of Haematopoietic Stem Cell Gene Therapy for the Wiskott Aldrich Syndrome (GTG002-07 and GTG003-08).

An open follow up study of patients enrolled in the Phase 1/2 clinical trial of haematopoietic stem cell gene therapy for the Wiskott-Aldrich Syndrome and treated with autologous CD34+ cells transduced with the w1.6_hWASP_WPRE (VSVg) lentiviral vector.

Study Overview

Status

Status

Indicates the current recruitment status or the expanded access status.
Active, not recruiting

Conditions

Conditions

The disease, disorder, syndrome, illness, or injury that is being studied. On ClinicalTrials.gov, conditions may also include other health-related issues, such as lifespan, quality of life, and health risks.

Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.

Study Type

Study Type

Describes the nature of a clinical study. Study types include interventional studies (also called clinical trials), observational studies (including patient registries), and expanded access.
Interventional

Enrollment (Anticipated)

Enrollment

The number of participants in a clinical study. The "anticipated" enrollment is the target number of participants that the researchers need for the study.
10

Phase

Phase

The stage of a clinical trial studying a drug or biological product, based on definitions developed by the U.S. Food and Drug Administration (FDA). The phase is based on the study's objective, the number of participants, and other characteristics. There are five phases: Early Phase 1 (formerly listed as Phase 0), Phase 1, Phase 2, Phase 3, and Phase 4. Not Applicable is used to describe trials without FDA-defined phases, including trials of devices or behavioral interventions.
  • Phase 2
  • 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

  • France
      • Paris, France, 75743
        • Hopital Necker - Enfants Malades
  • United Kingdom
      • London, United Kingdom, WC1N 1EH
        • UCL Institute of Child Health

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

Eligibility Criteria

The key requirements that people who want to participate in a clinical study must meet or the characteristics they must have. Eligibility criteria consist of both inclusion criteria (which are required for a person to participate in the study) and exclusion criteria (which prevent a person from participating). Types of eligibility criteria include whether a study accepts healthy volunteers, has age or age group requirements, or is limited by sex.

Ages Eligible for Study

  • Child
  • Adult
  • Older Adult

Accepts Healthy Volunteers

No

Genders Eligible for Study

Male

Description

Inclusion Criteria:

  • Patients enrolled in the initial phase I/II WAS conducted in France and United Kingdom (GTG002.07 and GTG003.08).
  • Parents, guardians or patient signed informed consent, guardians or patient signed informed consent

Exclusion Criteria:

• Parents, guardians, patients unwilling to return for the follow up study period.

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: Other
  • Allocation: N/A
  • Interventional Model: Single Group Assignment
  • Masking: None (Open Label)

What is the study measuring?

Primary Outcome Measures

Primary Outcome Measures

In a clinical study's protocol, the planned outcome measure that is the most important for evaluating the effect of an intervention/treatment. Most clinical studies have one primary outcome measure, but some have more than one.
Outcome Measure
Measure Description
Time Frame
Incidence and type of SAEs
Time Frame: yearly from 3 years to 15 years
Incidence and nature of delayed events such as malignancies, hematologic, autoimmune events, mortality
yearly from 3 years to 15 years
Lentiviral integration sites
Time Frame: yearly from 3 years to 15 years (from 11 to 15 yearly time points, only in case of Advers Events of Special Interest)
Presence of lentiviral integration sites in different cells sub-populations
yearly from 3 years to 15 years (from 11 to 15 yearly time points, only in case of Advers Events of Special Interest)
Vector copy numbers
Time Frame: yearly from 3 years to 15 years (from 11 to 15 yearly time points, only in case of Advers Events of Special Interest)
Quantification of vector copy numbers on sorted cells population by q-PCR
yearly from 3 years to 15 years (from 11 to 15 yearly time points, only in case of Advers Events of Special Interest)
Replication competent lentivirus (RCL)
Time Frame: yearly from 3 years to 15 years (from 11 to 15 yearly time points, only in case of Advers Events of Special Interest)
Presence of RCL
yearly from 3 years to 15 years (from 11 to 15 yearly time points, only in case of Advers Events of Special Interest)
Change in medical conditions
Time Frame: yearly from 3 years to 10 years
Weight and complete clinical exam
yearly from 3 years to 10 years
Key medical events related to WAS
Time Frame: yearly from 3 years to 10 years
Eczema status, infections, bleeding symptoms, autoimmune manifestation
yearly from 3 years to 10 years
Hematological reconstitution
Time Frame: yearly from 3 years to 10 years
CBC including platelets count and size
yearly from 3 years to 10 years
Reconstitution of cell mediated and humoral immunity
Time Frame: yearly from 3 years to 10 years (from 3 years to 5 years for PHA and candida )
Immunophenotyping panel, whole blood lymphocytes proliferation assays, restoration of antibody production, humoral response to antigene
yearly from 3 years to 10 years (from 3 years to 5 years for PHA and candida )

Secondary Outcome Measures

Secondary Outcome Measures

In a clinical study's protocol, a planned outcome measure that is not as important as the primary outcome measure for evaluating the effect of an intervention but is still of interest. Most clinical studies have more than one secondary outcome measure.
Outcome Measure
Measure Description
Time Frame
Need for associated treatments
Time Frame: yearly from 3 years to 15 years
Immunoglobulins, antibacterial, antifungal, antiviral drugs, transfusions
yearly from 3 years to 15 years
Representation of TCR families
Time Frame: yearly from 3 years to 5 years
Representation of TCR families by PCR TREC (TCR excision circle) and TCR V beta panel
yearly from 3 years to 5 years
Bone marrow content
Time Frame: yearly from 3 years to 5 years (optional)
Numbers and type of cells in bone marrow
yearly from 3 years to 5 years (optional)

Collaborators and Investigators

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

Sponsor

Sponsor

The organization or person who initiates the study and who has authority and control over the study.
Genethon

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

Study Start

The actual date on which the first participant was enrolled in a clinical study. The "anticipated" study start date is the date that the researchers think will be the study start date.
September 1, 2014

Primary Completion (Anticipated)

Primary Completion

The date on which the last participant in a clinical study was examined or received an intervention to collect final data for the primary outcome measure. Whether the clinical study ended according to the protocol or was terminated does not affect this date. For clinical studies with more than one primary outcome measure with different completion dates, this term refers to the date on which data collection is completed for all the primary outcome measures. The "anticipated" primary completion date is the date that the researchers think will be the primary completion date for the study.
October 1, 2032

Study Completion (Anticipated)

Study Completion

The date on which the last participant in a clinical study was examined or received an intervention/treatment to collect final data for the primary outcome measures, secondary outcome measures, and adverse events (that is, the last participant's last visit). The "anticipated" study completion date is the date that the researchers think will be the study completion date.
October 1, 2032

Study Registration Dates

First Submitted

First Submitted

The date on which the study sponsor or investigator first submitted a study record to ClinicalTrials.gov. There is typically a delay of a few days between the first submitted date and the record's availability on ClinicalTrials.gov (the first posted date).
October 28, 2014

First Submitted That Met QC Criteria

First Submitted That Met QC Criteria

The date on which the study sponsor or investigator first submits a study record that is consistent with National Library of Medicine (NLM) quality control (QC) review criteria. The sponsor or investigator may need to revise and submit a study record one or more times before NLM's QC review criteria are met. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
January 5, 2015

First Posted (Estimate)

First Posted

The date on which the study record was first available on ClinicalTrials.gov after National Library of Medicine (NLM) quality control (QC) review has concluded. There is typically a delay of a few days between the date the study sponsor or investigator submitted the study record and the first posted date.
January 7, 2015

Study Record Updates

Last Update Posted (Actual)

Last Update Posted

The most recent date on which changes to a study record were made available on ClinicalTrials.gov. There may be a delay between when the changes were submitted to ClinicalTrials.gov by the study's sponsor or investigator (the last update submitted date) and the last update posted date.
June 3, 2021

Last Update Submitted That Met QC Criteria

Last Update Submitted That Met QC Criteria

The most recent date on which the study sponsor or investigator submitted changes to a study record that are consistent with National Library of Medicine (NLM) quality control (QC) review criteria. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
May 31, 2021

Last Verified

Last Verified

The most recent date on which the study sponsor or investigator confirmed the information about a clinical study on ClinicalTrials.gov as accurate and current. If a study with a recruitment status of recruiting; not yet recruiting; or active, not recruiting has not been confirmed within the past 2 years, the study's recruitment status is shown as unknown.
May 1, 2021

More Information

Terms related to this study

Additional Relevant MeSH Terms

Other Study ID Numbers

Other Study ID Numbers

Identifiers or ID numbers other than the NCT number that are assigned to a clinical study by the study's sponsor, funders, or others. These numbers may include unique identifiers from other trial registries and National Institutes of Health grant numbers.
  • GNT-WAS-03

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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