Gene Therapy for X-CGD

NCT01906541 | Unknown Phase 1 DMC

• 1 other identifier: X-CGD
• Study Type: interventional
• Target: 5
• Locations: 1 country
• Sites: 1

Brief Summary

X-linked chronic granulomatous disease (X-CGD) is a rare inherited immune defect, which is caused by the inability of phagocytic cells to produce reactive oxygen species due to a defect in the gp91phox subunit of the NADPH oxidase complex. X-CGD patients suffer from recurrent and life-threatening infections and severe hyperinflammatory complications. The only curative treatment for X-CGD is allogenic hematopoietic stem cell transplantation, but this procedure implies severe risks and many patients lack an appropriate donor. Therefore alternative curative approaches are urgently needed. In this study, patients will be treated with gene-corrected autologous CD34+ cells, using a SIN gammaretroviral vector for ex-vivo gene-therapy.

Conditions

X-linked Chronic Granulomatous Disease

Keywords

X-CGD; chronic granulomatous disease; gene-therapy

Outcome Measures

Primary Outcomes (5)

• Transduction rate of granulocyte colony-stimulating factor (G-CSF) mobilized peripheral CD34+ cells from CGD patients with a SIN gamma retroviral vector

  1 week

• Engraftment rate of the transduced CD34+ cells in the patients

  5 years

• Long-term expression of the transgene (rate of gp91phox positive cells) in circulating cells in the peripheral blood

  5 years

• Functional reconstitution of the NADPH oxidase in circulating cells of the peripheral blood (% DHR positive cells)

  5 years

• Frequency and severity of unexpected toxic adverse events during and after infusion of the genetically modified CD34+ cells

  5 years

Secondary Outcomes (4)

• Frequency of infections as indicator for the clinical benefit for the patients

  5 years

• Proliferation rate of CD34+ cells in ex-vivo culture under serum-free conditions

  up to 3 weeks

• Differentiation rate of CD34+ cells (as measured by flow cytometry) in ex-vivo culture under serum-free conditions

  up to 3 weeks

• Transduction rate of CD34+ cells in ex-vivo culture under serum-free conditions

  up to 12 weeks

Study Arms (1)

ex-vivo gene-therapy

EXPERIMENTAL

transplantation of genetically modified autologous CD34+ cells

Genetic: ex-vivo gene-therapy

Interventions

ex-vivo gene-therapy GENETIC

transplantation autologous CD34+ cells, transduced with a SIN gammaretroviral vector

ex-vivo gene-therapy

Eligibility Criteria

• Age: 18 Years+
• Sex: all
• Healthy Volunteers: No
• Age Groups: Adult (18-64), Older Adult (65+)

You may qualify if:

• Verified diagnosis of the X-linked form of chronic granulomatous disease, with loss of gp91phox expression (Western Blot). Evidence of less than 5% of normal oxidase production in circulating neutrophil granulocytes as measured by dihydrorhodamine- (DHR-) and nitro blue tetrazolium- (NBT-) assay
• History of severe chronic infections with life-threatening course or severe steroid- sensitive or steroid insensitive granulomatous disease, with necessity of inpatient treatment, without sustained improvement even under maximum conservative treatment measures
• No Human Leukocyte Antigen (HLA) identical (10/10 match) sibling- or unrelated donor, or contraindications for allogenic stem cell transplantation in presence of a suitable donor. The lack of an HLA-identical (10/10 match) sibling- or unrelated donor has to be confirmed by an unsuccessful search in national and international donor registers for at leat 3 months
• Normal organ-function: glomerular filtration rate (GFR) ≥ 60ml/min., Bilirubin ≤ 1.5-fold upper reference-level, normal parameters for liver enzymes and clotting (TPZ 75-100%, partial thromboplastin time (PTT) 30-38sec, Fibrinogen 200-400mg/dl), Leukocytes \> 3 x 10\^9/l, Granulocytes \> 1.5 x 10\^9/l, Thrombocytes \>100 x 10\^9/l
• Contraception from start of G-CSF application until 1 year after retransfusion of the gene-corrected cells
• No interferon-gamma injection within two weeks prior to hematopoietic stem cell mobilization
• Karnofsky-Index \> 70%
• Signed informed consent

You may not qualify if:

• Patients with non-controlled acute infections
• Severe cardiac or pulmonary malfunctions: ejection fraction \< 60%, valvular heart disease \> II°, arrhythmia requiring therapy, forced expiratory volume at one second/vital capacity (FEV1/VC) \< 75% , diffusion capacity of lung for carbon monoxide (DLCO) \<60%
• Bilirubin \> 1.5-fold upper reference-level
• HIV-, Hepatitis B- or C - infection
• Contraindications for G-CSF administration, as autoimmune vasculitis.
• Contraindications for stem cell apheresis, as low hemoglobin \< 8g/dl, cardiovascular instability or severe coagulopathy
• Pregnancy or breast-feeding
• Drug- or alcohol-abuse
• Lack of search for an unrelated donor
• Patients with a HLA 9/10 mismatched unrelated donor (MMUD) will be excluded, if a thorough risk-benefit analysis favors allogenic hematopoietic stem cell transplantation (HSCT)

Sponsors & Collaborators

• Hubert Serve, Prof., MD: lead

Study Sites (1)

University Hospital Frankfurt

Frankfurt am Main, 60595, Germany

RECRUITING

MeSH Terms

Conditions

Granulomatous Disease, Chronic

Condition Hierarchy (Ancestors)

Phagocyte Bactericidal Dysfunction; Leukocyte Disorders; Hematologic Diseases; Hemic and Lymphatic Diseases; Genetic Diseases, X-Linked; Genetic Diseases, Inborn; Congenital, Hereditary, and Neonatal Diseases and Abnormalities; Immunologic Deficiency Syndromes; Immune System Diseases; Chronic Disease; Disease Attributes; Pathologic Processes; Pathological Conditions, Signs and Symptoms

Central Study Contacts

Hubert Serve, Prof., MD

CONTACT

0049/69/6301; serve@em.uni-frankfurt.de

Joachim Schwäble, MD

CONTACT

0049/69/67824900; schwaeble@em.uni-frankfurt.de

Study Design

• Study Type: interventional
• Phase: phase 1
• Allocation: NA
• Masking: NONE
• Purpose: TREATMENT
• Intervention Model: SINGLE GROUP
• Sponsor Type: OTHER
• Responsible Party: SPONSOR INVESTIGATOR
• PI Title: Head of Medical Department II

Study Record Dates

• First Submitted: July 15, 2013
• First Posted: July 24, 2013
• Study Start: July 1, 2013
• Primary Completion: December 1, 2013
• Study Completion: December 1, 2019
• Last Updated: August 2, 2013

Record last verified: 2013-08

Locations

DE (1)