Clinical Trial of SB-509 in Subjects With Diabetic Neuropathy

NCT ID: NCT01079325

Last Updated: 2022-05-23

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

COMPLETED

Clinical Phase

PHASE2

Total Enrollment

170 participants

Study Classification

INTERVENTIONAL

Study Start Date

2009-11-30

Study Completion Date

2016-04-30

Brief Summary

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The purpose of the study is to evaluate the clinical effects of the investigational drug, SB-509, in subjects with diabetic neuropathy.

Detailed Description

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SB-509 contains the gene (DNA-a kind of biological "blueprint") for a protein. When a researcher injects SB-509 into your legs, the drug enters the muscle and nerve cells around the injection site and causes these cells to make a protein. This protein causes your cells to increase production of another protein called vascular endothelial growth factor (VEGF), which may improve the structure and function of nerves. In addition, there are changes in the levels of additional proteins in your cells. These proteins function to promote the growth of cells, are structures in cells, help synthesize products, and affect immune cells, and some have unknown functions. This increase in your own VEGF proteins may protect and repair the damaged nerves caused by diabetic neuropathy.

Conditions

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Diabetes Mellitus, Type 1 Diabetes Mellitus, Type 2 Diabetic Polyneuropathy

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

PARALLEL

Primary Study Purpose

TREATMENT

Blinding Strategy

TRIPLE

Participants Caregivers Investigators

Study Groups

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SB-509

Group Type EXPERIMENTAL

SB-509

Intervention Type DRUG

SB-509 60 mg, 3 treatments, and 5 months treatment period

Placebo

Saline

Group Type PLACEBO_COMPARATOR

Saline

Intervention Type OTHER

Interventions

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SB-509

SB-509 60 mg, 3 treatments, and 5 months treatment period

Intervention Type DRUG

Saline

Intervention Type OTHER

Other Intervention Names

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30 ml saline, 3 treatments

Eligibility Criteria

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Inclusion Criteria

* Clinical diagnosis of Diabetes Mellitus Type I or II for at least 12 months
* Clinical signs and symptoms of moderate to severe diabetic sensory-motor polyneuropathy of the lower extremities for at least 6 months that are not otherwise attributed to an etiology other than diabetes
* Measurable sural and peroneal response bilaterally
* HgbA1C level ≤ 10%
* LDL cholesterol ≤ 160 mg/dL
* Blood pressure ≤ 140/90 mm Hg
* Body mass index (BMI) ≤ 38

Exclusion Criteria

* Moderate to severe ischemic heart disease or any history of congestive heart failure, or have had a myocardial infarction within the previous 6 months
* Evidence of cardiac enlargement and/or congestive heart failure
* Current diabetic foot or leg ulcer, gangrene in the lower extremity, or any amputation of the lower extremity
* History of malignancy, except for the following: adequately treated basal cell or squamous cell skin cancer, superficial bladder cancer, adequately treated Stage 1 or 2 cancer currently in complete remission, or any other cancer that has been in complete remission for at least 5 years
* Immune or immunodeficiency disorders or expected to require immunosuppressants for 30 days prior to, during, and for 30 days following administration of the investigational drug product
* History of or current proliferative retinopathy, macular edema or retinal neovascularization
* Pre-cancerous conditions or benign tumors which have the potential for clinically significant growth due to VEGF stimulation
* Family history of inherited neuropathy (e.g. Charcot Marie Tooth, Hereditary Predisposition to Pressure Palsy)
Minimum Eligible Age

18 Years

Maximum Eligible Age

80 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No

Sponsors

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Juvenile Diabetes Research Foundation

OTHER

Sponsor Role collaborator

Sangamo Therapeutics

INDUSTRY

Sponsor Role lead

Responsible Party

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Responsibility Role SPONSOR

Principal Investigators

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Winson Tang, MD

Role: STUDY_DIRECTOR

Sangamo BioSciences, Inc

Locations

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Phoenix, Arizona, United States

Site Status

Scottsdale, Arizona, United States

Site Status

Tucson, Arizona, United States

Site Status

Chino, California, United States

Site Status

Fresno, California, United States

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La Jolla, California, United States

Site Status

Los Angeles, California, United States

Site Status

National City, California, United States

Site Status

San Francisco, California, United States

Site Status

Walnut Creek, California, United States

Site Status

Boulder, Colorado, United States

Site Status

DeLand, Florida, United States

Site Status

Fort Myers, Florida, United States

Site Status

Miami, Florida, United States

Site Status

Orlando, Florida, United States

Site Status

Tampa, Florida, United States

Site Status

West Palm Beach, Florida, United States

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Idaho Falls, Idaho, United States

Site Status

Meridian, Idaho, United States

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Lexington, Kentucky, United States

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Boston, Massachusetts, United States

Site Status

Kansas City, Missouri, United States

Site Status

Las Vegas, Nevada, United States

Site Status

Winston-Salem, North Carolina, United States

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Tulsa, Oklahoma, United States

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Greer, South Carolina, United States

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Dallas, Texas, United States

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Houston, Texas, United States

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San Antonio, Texas, United States

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Salt Lake City, Utah, United States

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Norfolk, Virginia, United States

Site Status

Countries

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United States

Related Links

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Other Identifiers

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SB-509-0901

Identifier Type: -

Identifier Source: org_study_id

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