Phase I Randomized Study of Adeno-Associated Virus-CFTR Vector in Patients With Cystic Fibrosis

OBJECTIVES:

I. Determine the maximum tolerated dose of recombinant adeno-associated virus-CFTR vector in patients with cystic fibrosis.

II. Assess the safety of this gene therapy in these patients.

III. Assess the in vivo gene transfer of this vector in these patients.

IV. Assess the CFTR gene expression and physiologic activity following gene transfer in these patients.

V. Assess the clinical impact of CFTR gene expression following gene transfer in these patients.

VI. Monitor patient immune response directed against CFTR or vector components following vector administration.

Study Overview

• Status: Completed
• Conditions: Cystic Fibrosis
• Intervention / Treatment: Drug: Adeno-associated virus-CFTR vector

Detailed Description

PROTOCOL OUTLINE:

This is a randomized, dose escalation, double blind, placebo controlled, multicenter study. Patients are randomized to receive either adeno-associated virus-CFTR (AAV-CFTR) vector or placebo.

Patients undergo tests on days -10 to -4 to rule out adenovirus and adeno-associated virus infections. Patients then receive AAV-CFTR vector intranasally to the right or left inferior turbinates and placebo to the other side of the nose. The next day, patients receive an endobronchial dose of AAV-CFTR vector to the superior segment of the right lower lobe.

Cohorts of 2-4 patients each receive escalating doses of AAV-CFTR vector until the maximum tolerated dose (MTD) is determined. The MTD is defined as the dose level immediately preceding the dose at which at least 2 subjects develop dose limiting toxicity.

Patients are followed at day 10, then at 1, 2, 3, 6, 9, and 12 months.

• Study Type: Interventional
• Enrollment: 19
• Phase: Phase 1

Participation Criteria

Eligibility Criteria

• Ages Eligible for Study: 15 years and older (Child, Adult, Older Adult)
• Accepts Healthy Volunteers: No
• Genders Eligible for Study: All

Description

PROTOCOL ENTRY CRITERIA:

--Disease Characteristics--

Diagnosis of cystic fibrosis (CF) with mild to moderate lung disease; FVC at least 60% predicted; Schwachman-Kulczycki score at least 65; Sweat chloride greater than 60 mEq/L

All CF genotypes allowed

No sputum colonization with Burkholderia cepacia or another multiply resistant organism

No recurrent or intermittent hemoptysis; At least 1 year since significant hemoptysis requiring transfusion or embolization OR Coughing of greater than 30 mL of blood more often than once a week

--Prior/Concurrent Therapy--

At least 30 days since hospitalization or home intravenous antibiotic therapy for pulmonary exacerbation

No concurrent investigational drugs or therapy

--Patient Characteristics--

Other: No concurrent cigarette smoking; Not pregnant or nursing; Negative pregnancy test; Fertile patients must use effective contraception

Study Plan

How is the study designed?

Design Details

• Primary Purpose: Treatment
• Allocation: Randomized
• Masking: Double

Collaborators and Investigators

• Sponsor: National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK)
• Collaborators: University of Florida
• Investigators: Study Chair: Terence Flotte, University of Florida

Publications and helpful links

General Publications

• Flotte TR, Zeitlin PL, Reynolds TC, Heald AE, Pedersen P, Beck S, Conrad CK, Brass-Ernst L, Humphries M, Sullivan K, Wetzel R, Taylor G, Carter BJ, Guggino WB. Phase I trial of intranasal and endobronchial administration of a recombinant adeno-associated virus serotype 2 (rAAV2)-CFTR vector in adult cystic fibrosis patients: a two-part clinical study. Hum Gene Ther. 2003 Jul 20;14(11):1079-88. doi: 10.1089/104303403322124792.

Study record dates

Study Major Dates

• Study Start: August 1, 1999
• Primary Completion (Actual): August 1, 2002
• Study Completion (Actual): August 1, 2002

Study Registration Dates

• First Submitted: January 28, 2000
• First Submitted That Met QC Criteria: January 28, 2000
• First Posted (Estimate): January 31, 2000

Study Record Updates

• Last Update Posted (Actual): June 1, 2017
• Last Update Submitted That Met QC Criteria: May 30, 2017
• Last Verified: May 1, 2017

More Information

Terms related to this study

• Keywords: rare disease; cystic fibrosis; cardiovascular and respiratory diseases; genetic diseases and dysmorphic syndromes
• Additional Relevant MeSH Terms: Digestive System Diseases; Pathologic Processes; Respiratory Tract Diseases; Lung Diseases; Infant, Newborn, Diseases; Genetic Diseases, Inborn; Pancreatic Diseases; Fibrosis; Cystic Fibrosis
• Other Study ID Numbers: 199/14137; UF-G-037-1996 (Other Identifier: University of Florida); TGC-AAV-9502; P01DK058327 (U.S. NIH Grant/Contract); R01DK051809 (U.S. NIH Grant/Contract)