Diabetes Mellitus, Type 1Phase 2NCT00665145
Stem Cell Mobilization in Diabetic Neuropathy Subjects Receiving SB-509
A Phase 2 study testing SB-509 in people with Diabetes Mellitus, Type 1 and Diabetes Mellitus, Type 2, run by Sangamo Therapeutics at 4 sites in United States.
Trial summary
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. Read more about this study
- Who is it for?
- Ages 18 to 70 years
- Conditions the study is for
- Diabetes Mellitus, Type 1, Diabetes Mellitus, Type 2, Diabetic Polyneuropathy
- What is being tested?
- SB-509
- Could I receive a placebo?
- Yes, some participants may receive a placebo
- How many people
- 23 participants
- Where
- 4 sitesUnited States
- Study dates
- Jan 2008to Oct 2009
- Phase
- Phase 2
- Are there results?
- None posted in the registry
Key requirements
Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.
- Ages 18 to 70 years
- All sexes
- No healthy volunteers
- Adult, Older adult
Who may be able to join
- 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
Who cannot join
- 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).
Trial locations and contacts
4 sites in 1 country.
United States4 sites
Study site
Houston, Texas, 77030
Study site
La Jolla, California, 92037
Study site
San Antonio, Texas, 78229
Study site
Walnut Creek, California, 94598
About this study
Official title: A Phase 2 Study of Stem-Cell-Mobilization in Subjects With Diabetic Neuropathy Receiving SB-509
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)
Read the 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.
This study is intended to further evaluate the mechanism of SB-509 action.
- Being tested
- SB-509, Placebo
- Keywords
- Diabetes Mellitus, Type 1, Diabetes Mellitus, Type 2, Diabetic Polyneuropathy, Stem Cells
- Medical subject headings
- Diabetes Mellitus, Type 1, Diabetes Mellitus, Type 2, Diabetic Neuropathies
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
SB-509Drug
Active drug
SB-509Drug
Active drug
PlaceboDrug
Placebo
SB-509Drug
Active drug
| Study group | Role | What they receive |
|---|---|---|
| 1 | Experimental | Cohort 1 Receives: Drug: SB-509 |
| 2 | Experimental | Cohort 2 Receives: Drug: SB-509 |
| 3 | Placebo comparator | Cohort 3 Receives: Drug: Placebo |
| 4 | Experimental | Cohort 4 Receives: Drug: SB-509 |
What is being measured
The primary outcome is the main question the study is designed to answer.
Stem cells circulating in peripheral blood
Measured: One year
Secondary outcomes (1)
Safety and Efficacy of SB-509
Measured: One year
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted23 Apr 2008 (estimated)
- Study startJan 2008
- Primary completionOct 2009
- Study completionOct 2009
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Other trials for Diabetes Mellitus, Type 1Studies of the same condition, open and under way.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
More details
For doctors and researchers: how the study is designed, who runs it, and its registry IDs.
Study design
- Study type
- Interventional
- Phase
- Phase 2
- Primary purpose
- Treatment
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Masking
- Single blind
- Who is masked
- Participant
- Enrolment
- 23 participants (actual)
Sponsor and investigators
- Lead sponsor
- Sangamo Therapeutics
- Sponsor type
- Industry (pharma, biotech, devices)
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT00665145
- Sponsor's protocol ID
- SB-509-0703
- Status last verified
- Oct 2012
- First submitted
- 21 Apr 2008
- Last updated
- 1 Nov 2012
- Results posted
- No
- Data monitoring committee
- No
Study at a glance
From the registry record, last updated by the sponsor on 1 Nov 2012. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- A Phase 2 Study of Stem-Cell-Mobilization in Subjects With Diabetic Neuropathy Receiving SB-509
- ClinicalTrials.gov ID
- NCT00665145
- Acronym / sponsor ID
- SB-509-0703
- Keywords
- Diabetes Mellitus, Type 1, Diabetes Mellitus, Type 2, Diabetic Polyneuropathy, Stem Cells
- Phase
- Phase 2
- Study type
- Interventional
- Recruitment status
- Completed
- Enrolment
- 23 participants (actual)
- Lead sponsor
- Sangamo TherapeuticsIndustry (pharma, biotech, devices)
- Study start
- Jan 2008
- Primary completion
- Oct 2009 (actual)
- Study completion
- Oct 2009 (actual)
- First posted
- 23 Apr 2008 (estimated)
- Results
- Not posted in the source record
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
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
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.
Study design
- Primary purpose
- Treatment
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Masking
- Single blind (participant)
- Number of arms
- 4
| Arm | Type | Receives |
|---|---|---|
| 1 | Experimental | Drug: SB-509Cohort 1 |
| 2 | Experimental | Drug: SB-509Cohort 2 |
| 3 | Placebo comparator | Drug: PlaceboCohort 3 |
| 4 | Experimental | Drug: SB-509Cohort 4 |
Who may qualify
- Ages
- 18 to 70 years
- Sex
- All
- Healthy volunteers
- Not accepted
- Age groups
- Adult, Older adult
Key inclusion criteria (6 listed)
- 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
Key exclusion criteria (7 listed)
- 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.
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Interventions
| Intervention | Type | Arms |
|---|---|---|
| SB-509Active drug | Drug | 1 |
| SB-509Active drug | Drug | 2 |
| PlaceboPlacebo | Drug | 3 |
| SB-509Active drug | Drug | 4 |
Primary outcome
Stem cells circulating in peripheral blood
Time frame: One year
1 secondary outcome
Safety and Efficacy of SB-509
Time frame: One year
Results and safety
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 1 Nov 2012.
- Company websiteLink provided by the sponsor.
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Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part. This study is not recruiting at the moment.
The record lists no contact. Use the official record to reach the sponsor.
4 sites in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
A Phase 2 study testing SB-509 in people with Diabetes Mellitus, Type 1 and Diabetes Mellitus, Type 2, run by Sangamo Therapeutics at 4 sites in United States.
The full registered description is in the About this study section and the official record.
Who may be eligible to take part?
The sponsor lists 6 inclusion and 7 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.
Is this clinical trial currently recruiting?
The record says: finished, as of the sponsor's last update on 1 Nov 2012. Status can change between updates, so confirm with the study contact before making plans.
Where is the study taking place?
The record lists 4 sites in United States. Whether a site is taking part right now should be confirmed with that site. See every site.
What are the possible benefits and risks?
They depend on the study and the treatment, and no study can promise a benefit. Some participants in this study may receive a placebo. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.
What does this phase mean?
Phase 2 studies give the treatment to a larger group to see whether it has the intended effect and to keep checking safety.
Not every study follows the same path, and some studies (observational studies, device studies) have no phase.
Are results available for this study?
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
How can a doctor refer a patient or contact the research team?
The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
Stem cells circulating in peripheral blood (time frame: One year). It is what the study was designed to measure, not a finding.
Where can I read the original study information?
Does a listing mean the treatment is approved or proven to work?
No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.
How often is this information updated?
AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 1 Nov 2012.