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Gene Transfer for SCID-X1 Using a Self-inactivating Lentiviral Vector (TYF-IL-2Rg)

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ClinicalTrials.gov Identifier: NCT03217617
Recruitment Status : Unknown
Verified September 2019 by Lung-Ji Chang, Shenzhen Geno-Immune Medical Institute.
Recruitment status was:  Recruiting
First Posted : July 14, 2017
Last Update Posted : September 19, 2019
Sponsor:
Information provided by (Responsible Party):
Lung-Ji Chang, Shenzhen Geno-Immune Medical Institute

Tracking Information
First Submitted Date  ICMJE July 3, 2017
First Posted Date  ICMJE July 14, 2017
Last Update Posted Date September 19, 2019
Actual Study Start Date  ICMJE July 15, 2017
Estimated Primary Completion Date December 31, 2019   (Final data collection date for primary outcome measure)
Current Primary Outcome Measures  ICMJE
 (submitted: July 17, 2018)
  • Overall survival [ Time Frame: 1 year ]
  • Overall immune reconstitution [ Time Frame: 1 year ]
    T and B cell recovery
  • Change of infection status [ Time Frame: 1 year ]
Original Primary Outcome Measures  ICMJE
 (submitted: July 11, 2017)
percentage of treated patients with adverse events [ Time Frame: up to one month ]
Incidents of treatment related adverse events as assessed by CTCAE V4.0
Change History
Current Secondary Outcome Measures  ICMJE Not Provided
Original Secondary Outcome Measures  ICMJE
 (submitted: July 11, 2017)
  • Efficacy of immune reconstitution [ Time Frame: month 3, 6, 12, 24 ]
    T cells and B cells repertory by immunofluorescence; T, NK and B lymphocytes phenotyping
  • Number of patients with successful immune system reconstitution [ Time Frame: month 3, 6, 12, 24 ]
    Number of patients with successful reconstitution
Current Other Pre-specified Outcome Measures Not Provided
Original Other Pre-specified Outcome Measures Not Provided
 
Descriptive Information
Brief Title  ICMJE Gene Transfer for SCID-X1 Using a Self-inactivating Lentiviral Vector (TYF-IL-2Rg)
Official Title  ICMJE Gene Transfer for X-linked Severe Combined Immunodeficiency (SCID-X1) Using a Self-inactivating Lentiviral Vector (TYF-IL-2Rg)
Brief Summary This is a Phase I/II clinical trial of gene transfer for treating X-linked severe combined immunodeficiency (SCID-X1) using a self-inactivating lentiviral vector TYF-IL-2Rg to functionally correct the defective gene(s). The primary objectives are to evaluate the safety and efficacy of the gene transfer clinical protocol.
Detailed Description

X-linked severe combined immunodeficiency (SCID-X1) is a genetic disorder caused by defects in the common cytokine receptor chain, normally on the surface of lymphocytes. Individuals with SCID-X1 lack the normal development of a functional immune system and so have difficulty fighting infections, which may lead to chronic or severe illness and death. X-SCID patients are normally rescued by a bone marrow transplant from a healthy donor. This trial aims to treat SCID-X1 using a self-inactivating lentiviral vector carrying a functional gene to correct the genetic defect. By collecting an individual's stem cells and modifying them with a lentivirus, the gene-corrected cells can be returned into the blood to help produce normal healthy immune cells.

The primary objectives are to evaluate the safety of the self-inactivating lentiviral vector TYF-IL-2Rg, the ex vivo gene transfer clinical protocol and the efficacy of immune reconstitution in patients overcoming frequent infections present at the time of treatment, assessment of integration sites, and finally the long-term correction of immunodeficiency.

Study Type  ICMJE Interventional
Study Phase  ICMJE Phase 1
Phase 2
Study Design  ICMJE Allocation: N/A
Intervention Model: Single Group Assignment
Masking: None (Open Label)
Primary Purpose: Treatment
Condition  ICMJE SCID, X Linked
Intervention  ICMJE Biological: TYF-IL-2Rg gene-modified autologous stem cells
Infusion of transduced autologous stem cells
Study Arms  ICMJE Experimental: Single arm
Gene transfer to treat SCID-X1
Intervention: Biological: TYF-IL-2Rg gene-modified autologous stem cells
Publications * Not Provided

*   Includes publications given by the data provider as well as publications identified by ClinicalTrials.gov Identifier (NCT Number) in Medline.
 
Recruitment Information
Recruitment Status  ICMJE Unknown status
Estimated Enrollment  ICMJE
 (submitted: July 11, 2017)
10
Original Estimated Enrollment  ICMJE Same as current
Estimated Study Completion Date  ICMJE December 31, 2020
Estimated Primary Completion Date December 31, 2019   (Final data collection date for primary outcome measure)
Eligibility Criteria  ICMJE

Inclusion Criteria:

  1. Diagnosis of classical SCID-X1 based on:

    • A proven mutation in the common gamma chain gene as defined by direct sequencing of patient DNA.
    • T-cell immune deficiency defined as one or more of the following: CD3+ autologous T cells < 300/ul, or less than 50% of normal value for in vitro mitogen stimulation, or absent proliferation in vitro to antigens.
  2. With severe infections, including but not limited to: pneumonitis; protracted diarrhea requiring total parenteral nutrition; infection with herpes viruses or adenovirus or fungus; disseminated BCG infection.
  3. No cytogenetic abnormalities (medullary karyotype) and no detection of main rearrangements associated with acute leukemia of children.
  4. No prior allogeneic stem cell transplantation.
  5. Life expectancy ≥ 2 months.
  6. Negative for HIV infection.
  7. Written, informed consent obtained prior to any study-specific procedures.

Exclusion Criteria:

None

Sex/Gender  ICMJE
Sexes Eligible for Study: Male
Ages  ICMJE 1 Month to 10 Years   (Child)
Accepts Healthy Volunteers  ICMJE No
Contacts  ICMJE Contact information is only displayed when the study is recruiting subjects
Listed Location Countries  ICMJE China
Removed Location Countries  
 
Administrative Information
NCT Number  ICMJE NCT03217617
Other Study ID Numbers  ICMJE GIMI-IRB-17014
Has Data Monitoring Committee No
U.S. FDA-regulated Product
Studies a U.S. FDA-regulated Drug Product: No
Studies a U.S. FDA-regulated Device Product: No
IPD Sharing Statement  ICMJE
Plan to Share IPD: No
Current Responsible Party Lung-Ji Chang, Shenzhen Geno-Immune Medical Institute
Original Responsible Party Same as current
Current Study Sponsor  ICMJE Shenzhen Geno-Immune Medical Institute
Original Study Sponsor  ICMJE Same as current
Collaborators  ICMJE Not Provided
Investigators  ICMJE
Principal Investigator: Lung-Ji Chang, Ph.D Shenzhen Geno-Immune Medical Institute
Study Director: Xiao-Dong Shi, M.D./Ph. D Capital Institute of Pediatrics affiliated Children's hospital
Study Director: Jie Zheng, M.D./Ph. D Beijing Children's Hospital
PRS Account Shenzhen Geno-Immune Medical Institute
Verification Date September 2019

ICMJE     Data element required by the International Committee of Medical Journal Editors and the World Health Organization ICTRP