Clinical Trial of SB-509 in Subjects With Diabetic Neuropathy

NCT ID: NCT00406458

Last Updated: 2012-11-01

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

110 participants

Study Classification

INTERVENTIONAL

Study Start Date

2006-11-30

Study Completion Date

2009-05-31

Brief Summary

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The purpose of the study is to study the clinical effects of the investigational drug, SB-509 versus placebo in patients 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 28 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.

The study doctor will test SB-509 (60 mg) and placebo. Everyone in this study will receive intramuscular (IM-directly into the muscle) injections into both legs. This will happen 3 times over about 4 months. Two out of every 3 participants will receive SB-509 and 1 out of every 3 will receive placebo. You will not know, and the study doctor will not know, whether you will receive SB-509 or whether you will receive placebo.

Conditions

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

Keywords

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Diabetic neuropathy Diabetes Type I or II Mild to moderate sensorimotor diabetic polyneuropathy

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

PARALLEL

Primary Study Purpose

TREATMENT

Blinding Strategy

DOUBLE

Participants Investigators

Study Groups

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SB-509

60 mg SB-509 injected IM into lower limbs every 2 months

Group Type EXPERIMENTAL

SB-509

Intervention Type DRUG

60 mg dose

Normal Saline

Normal saline injected IM into lower limbs every 2 months

Group Type PLACEBO_COMPARATOR

Normal Saline

Intervention Type OTHER

Interventions

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SB-509

60 mg dose

Intervention Type DRUG

Normal Saline

Intervention Type OTHER

Eligibility Criteria

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Inclusion Criteria

* Have a clinical diagnosis of diabetes mellitus type I or II for at least 12 months prior to the study.
* Have received a diagnosis of mild to moderate sensorimotor diabetic neuropathy from a neurologist (a doctor who specializes in disorders of the nervous system) or endocrinologist (a doctor who specializes in diabetes). This type of neuropathy is a loss of sensation and muscle function that occurs in the legs and hands in a stocking and glove distribution. Subjects with diabetic neuropathy that results in loss of sensation or muscle function in only one nerve and results in loss of nerve function of the blood vessels and causes low blood pressure, will not be eligible.
* If female and of childbearing potential, agree to use a medically acceptable physical barrier method during the study.
* Have blood pressure \< 140/90 mm Hg
* Body mass index (BMI) \< 38 kg/m2

Exclusion Criteria

Subjects with the following are NOT eligible to participate in this study:

* Have moderate to severe ischemic heart disease, any history of congestive heart failure, or have had a myocardial infarction (heart attack) within the previous 6 months.
* Have chronic foot or leg ulcers for \>1 month, gangrene in the legs, or any previous amputation of the lower extremity.
* Have symptoms of intermittent claudication (or leg pain during exercise associated with peripheral artery disease) and/or an ankle brachial index (or a calculation of the difference between arm and leg blood pressures) of less than (\<) 0.75.
* Have a history of cancer within the past 5 years (except for curable non-melanoma cancer of the skin, superficial bladder cancer in complete remission, or any other cancer that has been in complete remission for at least 5 years).
* Have colon polyps. If patients have a history of benign colonic polyps that have been removed, they must have evidence of a normal colonoscopy within the last 12 months.
* Require any drug that depresses patients' immune systems (such as methotrexate, cyclophosphamide, or cyclosporine) when they receive the study drug and for 30 days afterwards.
* Have a known disorder that affects patients' immune systems (such as HIV/AIDS, hepatitis B virus \[HBV\], hepatitis C virus \[HCV\], sarcoidosis, tuberculosis, rheumatoid arthritis, or autoimmune disorders).
Minimum Eligible Age

18 Years

Maximum Eligible Age

70 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

Locations

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Coordinated Clinical Research

La Jolla, California, United States

Site Status

Advanced Medical Research, LLC

Lakewood, California, United States

Site Status

SF Clinical Research Center

San Francisco, California, United States

Site Status

Diablo Clinical Research

Walnut Creek, California, United States

Site Status

Bradenton Research Center

Bradenton, Florida, United States

Site Status

University of Miami, Diabetes Research Institute

Miami, Florida, United States

Site Status

Neurology Clinical Research

Sunrise, Florida, United States

Site Status

University of Kansas Medical Center

Kansas City, Kansas, United States

Site Status

Creighton Diabetes Center

Omaha, Nebraska, United States

Site Status

Upstate Clinical Research

Albany, New York, United States

Site Status

Peripheral Neuropathy Center, Weill Medical College of Cornell University

New York, New York, United States

Site Status

Altoona Center for Clinical Research

Duncansville, Pennsylvania, United States

Site Status

Nerve and Muscle Center of Texas

Houston, Texas, United States

Site Status

DGD Research

San Antonio, Texas, United States

Site Status

Instituto Mexicano de Investigación Clinica

Mexico City, Col. Roma, Mexico

Site Status

Countries

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United States Mexico

Related Links

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http://www.sangamo.com

Sponsor website

Other Identifiers

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SB-509-0601

Identifier Type: -

Identifier Source: org_study_id