Phase I Study of Retrovirally Mediated Transfer of the Human Glucocerebrosidase Gene Into Peripheral Blood Stem Cells for Autologous Transplantation in Patients With Type I Gaucher Disease

Gaucher's Disease Clinical Trial

Clinical Trial Details — Status: Completed

Administrative data

• NCT number: NCT00004294
• Other study ID #: 199/11727
• Secondary ID: UPITTS-GAUCHER
• Status: Completed
• Phase: Phase 1
• First received: October 18, 1999
• Last updated: June 23, 2005
• Start date: November 1999

Study information

• Verified date: December 2003
• Source: National Center for Research Resources (NCRR)
• Contact: n/a
• Is FDA regulated: No
• Health authority: United States: Federal Government
• Study type: Interventional

Clinical Trial Summary

OBJECTIVES: I. Transfer the human glucocerebrosidase (GC) gene into peripheral blood stem cells (PBSC) obtained from patients with type I Gaucher disease using a retroviral vector.

II. Transplant the autologous transduced PBSC in these patients. III. Measure the carriage and expression of the transferred gene and its duration in peripheral blood leukocytes.

IV. Assess the clinical effects of transplanting genetically corrected PBSC.

Description:

PROTOCOL OUTLINE: Patients undergo autologous transplantation using peripheral blood stems cells (PBSC) stimulated with filgrastim (G-CSF) and transduced with a retroviral vector containing the human glucocerebrosidase gene (R-GC). Patients may receive up to 4 transplants if a deficient glucocerebrosidase level is found in peripheral leukocytes 1 month following transplantation.

The G-CSF-stimulated PBSC are enriched for CD34-positive stem cells and transduced with the R-GC vector. Stem cells with normal gene activity are selected for transplantation.

Patients are followed every month for 6 months, every 6 months for 18 months, and then annually thereafter.

Recruitment information / eligibility

• Status: Completed
• Enrollment: 15
• Accepts healthy volunteers: No
• Gender: Both
• Age group: 18 Years to 65 Years

Eligibility

PROTOCOL ENTRY CRITERIA:

--Disease Characteristics-- Enzyme proven type I Gaucher disease Glucocerebrosidase (GC) activity less than 30% of normal GC mutation identified Significant signs and symptoms of disease prior to therapy initiation At least 1 of the following after 12 months of therapy: Liver at least 2 times normal size Spleen at least 5 times normal size Platelet count greater than 150,000/mm3 Clinical bone disease with pain, fractures, or infarctions Multiple sites of marrow involvement Angiotensin-converting enzyme at least 1.5 times normal No GC antibody At least 3 of the following responses to therapy: Hemoglobin increase of 2 g/dL Platelet count increase of 50% Spleen or liver size decrease at least 25% Improvement in MRI or x-ray of the bones Nontartrate inhibitable acid phosphatase decrease of 50% Angiotensin-converting enzyme decrease of 50% OR Previously untreated and immediate enzyme therapy would not be life saving Meets at least 2 of the following criteria: Spleen at least 5 times normal size or liver at least 2 times normal size by physical exam and MRI Hemoglobin less than 11 g/dL Platelet count less than 90,000/mm3 Disabling bone pain with degenerative changes on x-ray Multiple sites of bone marrow infiltration and evidence of bony changes Pulmonary compromise with clubbing and PaO2 less than 70 mm Hg Biopsy proven cirrhosis and elevated hepatic parenchymal enzymes Bleeding esophageal varices --Prior/Concurrent Therapy-- At least 3 months since any prior investigational therapy Concurrent enzyme replacement therapy may be tapered on study --Patient Characteristics-- HIV negative No malignant disease No known sensitivity to egg or murine products Not pregnant or nursing Fertile patients must use effective contraception

Study Design

Primary Purpose: Treatment

Related Conditions & MeSH terms

• Gaucher Disease
• Gaucher's Disease

Intervention

Genetic:
• human glucocerebrosidase gene into autologous peripheral blood stem cells

Locations

Country	Name	City	State
United States	University of Pittsburgh	Pittsburgh	Pennsylvania

Sponsors (3)

Lead Sponsor	Collaborator
National Center for Research Resources (NCRR)	National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK), University of Pittsburgh

Country where clinical trial is conducted

United States,