Stem Cell Mobilization in Diabetic Neuropathy Subjects Receiving SB-509

NCT ID: NCT00665145

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

23 participants

Study Classification

INTERVENTIONAL

Study Start Date

2008-01-31

Study Completion Date

2009-10-31

Brief Summary

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The primary and secondary objectives of this study are:

Primary: To evaluate stem-cell-mobilization in subjects with diabetic neuropathy receiving SB-509. Stem cell mobilization will be assessed by evaluating the presence of stem cells circulating in peripheral blood.

Secondary: To evaluate the safety of SB-509 in subjects treated with SB-509 with diabetic neuropathy; and to compare the effect of SB-509 versus placebo on a pre-defined multi-endpoint analysis that includes visual analog scale for pain intensity (VASPI), total neuropathy score (TNS), evoked nerve conduction velocity (NCV) and quantitative sensory testing (QST)

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.

This study is intended to further evaluate the mechanism of SB-509 action.

Conditions

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

Keywords

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

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

PARALLEL

Primary Study Purpose

TREATMENT

Blinding Strategy

SINGLE

Participants

Study Groups

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1

Cohort 1

Group Type EXPERIMENTAL

SB-509

Intervention Type DRUG

Active drug

2

Cohort 2

Group Type EXPERIMENTAL

SB-509

Intervention Type DRUG

Active drug

3

Cohort 3

Group Type PLACEBO_COMPARATOR

Placebo

Intervention Type DRUG

Placebo

4

Cohort 4

Group Type EXPERIMENTAL

SB-509

Intervention Type DRUG

Active drug

Interventions

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SB-509

Active drug

Intervention Type DRUG

SB-509

Active drug

Intervention Type DRUG

Placebo

Placebo

Intervention Type DRUG

SB-509

Active drug

Intervention Type DRUG

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 sensorimotor diabetic neuropathy from a neurologist (a doctor who specializes in disorders of the nervous system) or endocrinologist (a doctor who specializes in diabetes).
* Have reduced nerve conduction velocity in any lower extremity nerve: peroneal, tibial or sural due to diabetic polyneuropathy
* 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 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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Sangamo Therapeutics

INDUSTRY

Sponsor Role lead

Responsible Party

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Sangamo BioSciences, Inc.

Locations

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La Jolla, California, United States

Site Status

Walnut Creek, California, United States

Site Status

Houston, Texas, United States

Site Status

San Antonio, Texas, United States

Site Status

Countries

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United States

Related Links

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http://www.sangamo.com

Company website

Other Identifiers

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SB-509-0703

Identifier Type: -

Identifier Source: org_study_id