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Clinical Trial of SB-509 in Subjects With Diabetic Neuropathy

Primary Purpose

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

Status
Completed
Phase
Phase 2
Locations
International
Study Type
Interventional
Intervention
SB-509
Placebo
Sponsored by
Sangamo Therapeutics
About
Eligibility
Locations
Arms
Outcomes
Full info

About this trial

This is an interventional treatment trial for Diabetes Mellitus, Type 1 focused on measuring Diabetic neuropathy, Diabetes Type 1 or 2, Moderate to severe sensorimotor diabetic polyneuropathy, Unmeasurable nerve conduction velocity

Eligibility Criteria

18 Years - 70 Years (Adult, Older Adult)All SexesDoes not accept healthy volunteers

Inclusion Criteria:

Key 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 moderate to severe 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.
  • Unmeasurable 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

Key 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).

Sites / Locations

  • Coordinated Clinical Research
  • Advanced Medical Research, LLC
  • Torrance Clinical Research
  • SF Clinical Research Center
  • Diablo Clinical Research
  • Bradenton Research Center
  • Neurology Clinical Research
  • Laszlo J. Mate', M.D.
  • University of Kansas Medical Center
  • Creighton Diabetes Center
  • Advanced Biomedical Research of America
  • Upstate Clinical Research
  • Peripheral Neuropathy Center, Weill Medical College of Cornell University
  • Neurological Institute Columbia University College of Physicians and Surgeons
  • Altoona Center for Clinical Research
  • Nerve and Muscle Center of Texas
  • Diabetes Center of the Southwest
  • DGD Research
  • Rainier Clinical Research Center
  • Instituto Mexicano de Investigación Clinica

Arms of the Study

Arm 1

Arm 2

Arm Type

Experimental

Placebo Comparator

Arm Label

1

2

Arm Description

SB-509

Outcomes

Primary Outcome Measures

Total Neuropathy Score (TNS),Evoked nerve conduction velocity (NCV), Quantitative Sensory Testing (QST), %of subjects with conversion of unmeasurable to measurable NCV and NIS-LL

Secondary Outcome Measures

Safety

Full Information

First Posted
May 18, 2007
Last Updated
October 30, 2012
Sponsor
Sangamo Therapeutics
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1. Study Identification

Unique Protocol Identification Number
NCT00476931
Brief Title
Clinical Trial of SB-509 in Subjects With Diabetic Neuropathy
Official Title
A Phase 2 Repeat Dosing Clinical Trial of SB-509 in Subjects With Moderate to Severe Diabetic Neuropathy and Unmeasurable Nerve Conduction Velocity
Study Type
Interventional

2. Study Status

Record Verification Date
October 2012
Overall Recruitment Status
Completed
Study Start Date
May 2007 (undefined)
Primary Completion Date
July 2010 (Actual)
Study Completion Date
December 2010 (Actual)

3. Sponsor/Collaborators

Responsible Party, by Official Title
Sponsor
Name of the Sponsor
Sangamo Therapeutics

4. Oversight

Data Monitoring Committee
No

5. Study Description

Brief Summary
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
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.

6. Conditions and Keywords

Primary Disease or Condition Being Studied in the Trial, or the Focus of the Study
Diabetes Mellitus, Type 1, Diabetes Mellitus, Type 2, Diabetic Polyneuropathy
Keywords
Diabetic neuropathy, Diabetes Type 1 or 2, Moderate to severe sensorimotor diabetic polyneuropathy, Unmeasurable nerve conduction velocity

7. Study Design

Primary Purpose
Treatment
Study Phase
Phase 2
Interventional Study Model
Parallel Assignment
Masking
Investigator
Allocation
Randomized
Enrollment
91 (Actual)

8. Arms, Groups, and Interventions

Arm Title
1
Arm Type
Experimental
Arm Description
SB-509
Arm Title
2
Arm Type
Placebo Comparator
Intervention Type
Biological
Intervention Name(s)
SB-509
Intervention Description
60 mg dose
Intervention Type
Other
Intervention Name(s)
Placebo
Intervention Description
Saline
Primary Outcome Measure Information:
Title
Total Neuropathy Score (TNS),Evoked nerve conduction velocity (NCV), Quantitative Sensory Testing (QST), %of subjects with conversion of unmeasurable to measurable NCV and NIS-LL
Time Frame
One year
Secondary Outcome Measure Information:
Title
Safety
Time Frame
One year

10. Eligibility

Sex
All
Minimum Age & Unit of Time
18 Years
Maximum Age & Unit of Time
70 Years
Accepts Healthy Volunteers
No
Eligibility Criteria
Inclusion Criteria: Key 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 moderate to severe 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. Unmeasurable 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 Key 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).
Facility Information:
Facility Name
Coordinated Clinical Research
City
La Jolla
State/Province
California
ZIP/Postal Code
92037
Country
United States
Facility Name
Advanced Medical Research, LLC
City
Lakewood
State/Province
California
ZIP/Postal Code
90712
Country
United States
Facility Name
Torrance Clinical Research
City
Lomita
State/Province
California
ZIP/Postal Code
90707
Country
United States
Facility Name
SF Clinical Research Center
City
San Francisco
State/Province
California
ZIP/Postal Code
94109
Country
United States
Facility Name
Diablo Clinical Research
City
Walnut Creek
State/Province
California
ZIP/Postal Code
94598
Country
United States
Facility Name
Bradenton Research Center
City
Bradenton
State/Province
Florida
ZIP/Postal Code
34205
Country
United States
Facility Name
Neurology Clinical Research
City
Sunrise
State/Province
Florida
ZIP/Postal Code
33351
Country
United States
Facility Name
Laszlo J. Mate', M.D.
City
West Palm Beach
State/Province
Florida
ZIP/Postal Code
33407
Country
United States
Facility Name
University of Kansas Medical Center
City
Kansas City
State/Province
Kansas
ZIP/Postal Code
66160
Country
United States
Facility Name
Creighton Diabetes Center
City
Omaha
State/Province
Nebraska
ZIP/Postal Code
68131
Country
United States
Facility Name
Advanced Biomedical Research of America
City
Las Vegas
State/Province
Nevada
ZIP/Postal Code
89123
Country
United States
Facility Name
Upstate Clinical Research
City
Albany
State/Province
New York
ZIP/Postal Code
12205
Country
United States
Facility Name
Peripheral Neuropathy Center, Weill Medical College of Cornell University
City
New York
State/Province
New York
ZIP/Postal Code
10022
Country
United States
Facility Name
Neurological Institute Columbia University College of Physicians and Surgeons
City
New York
State/Province
New York
ZIP/Postal Code
10032
Country
United States
Facility Name
Altoona Center for Clinical Research
City
Duncansville
State/Province
Pennsylvania
ZIP/Postal Code
16635
Country
United States
Facility Name
Nerve and Muscle Center of Texas
City
Houston
State/Province
Texas
ZIP/Postal Code
77030
Country
United States
Facility Name
Diabetes Center of the Southwest
City
Midland
State/Province
Texas
ZIP/Postal Code
79705
Country
United States
Facility Name
DGD Research
City
San Antonio
State/Province
Texas
ZIP/Postal Code
78229
Country
United States
Facility Name
Rainier Clinical Research Center
City
Renton
State/Province
Washington
ZIP/Postal Code
98057
Country
United States
Facility Name
Instituto Mexicano de Investigación Clinica
City
Mexico City
State/Province
Col. Roma
ZIP/Postal Code
06700
Country
Mexico

12. IPD Sharing Statement

Links:
URL
http://www.sangamo.com
Description
Related Info

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Clinical Trial of SB-509 in Subjects With Diabetic Neuropathy

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