Type 2 DiabetesPhase 1NCT00332085
Pilot Trial of Chromium-Metformin Combination in Type 2 Diabetes
A Phase 1 study testing Chromium Picolinate in people with Type 2 Diabetes, run by Bastyr University at 2 sites in United States.
Trial summary
This pilot trial seeks to gather preliminary data on the combination of chromium picolinate, the most commonly used form of chromium, and metformin. The trial will recruit type 2 diabetes subjects already on metformin and treat them with chromium for 8 weeks. Read more about this study
- Who is it for?
- Ages 18 to 65 years
- Conditions the study is for
- Type 2 Diabetes
- What is being tested?
- Chromium Picolinate
- How many people
- 40 participants
- Where
- 2 sitesUnited States
- Study dates
- Jan 2006to Mar 2007
- Phase
- Phase 1
- 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 65 years
- All sexes
- No healthy volunteers
- Adult, Older adult
Who may be able to join
- ICD-9 Diagnosis of TYpe 2 Diabetes (250.XX) for two years or less and treated with metformin Patients having completed dose titration of metformin as prescribed by their physician and have reached a stble dose between 1000-2550 mg per day for at least two months HbA1c: 7.0-10.5%
Who cannot join
- Duration of metformin treatment longer than 1 year at start time of study medication Historical or current use of oral anti-diabetes (OAD) medication (other than metformin) or use of insulin History ofmyocardial infarction within the lat 6 months, unstable angina, uncontrollable hypertension with systolic greater than 180 or diastolic greater than 110.
- Clinical or objective finding suggestive of congestive heart failure. Individuals not receiving routine management by their primary car eproviders and/or endocrinologists for their type 2 diabetes, including routine ECG and ophthamological evaluations.
- Women of child-bearing age not using standard birth control measures. Hemoglobin <11 or > 16; Hematocrig <32 or > 50; WBC <3,000 or >12,000; Platelets <150,000 or >500,000 Serum Creatinine >1.4 mg/dL; BUN >25 mg/dL Presence of greater than +1 protein on random macroscopic urinalysis at screening without a rule out of microalbuminuria Total bilirubin >1.5 mg/dL LFTs: AST>60 IU/L; ALT>65/L; Alkaline phosphatase >120 Iu/L. Isolated LFT elevations with an ultrasound diagnosis of non-alcoholic Steatohepatitis and a lab rule out of viral hepatitis will be included in the study with careful monitoring of LFTs.
- Subjects currently taking nutritional supplements, including multivatmin for study duration; subjects will be asked to discontinue any nutritional supplementation at the screening telephone interview 1 week prior to screening lab work and 4 week sprior to baseline lab work.
- Subjects taking lipid lowering medications except statins (i.e. niacin, fibrates, resins) due to possible chromium binding.
Trial locations and contacts
2 sites in 1 country.
United States2 sites
Bastyr University Campus SPR
Kenmore, Washington, 98036
Bastyr Center for Natural Health
Seattle, Washington
About this study
Official title: Pilot Trial of Chromium-Metformin Combination in Type 2 Diabetes: Impact on Blood Sugar Control and Insulin Resistance
This pilot trial seeks to gather preliminary data on the combination of chromium picolinate, the most commonly used form of chromium, and metformin. The trial will recruit type 2 diabetes subjects already on metformin and treat them with chromium for 8 weeks. The results of this trial will provide vital preliminary data including safety and size of effect to direct future studies.
Read the detailed description
Chromium is widely marketed for use in diabetes and is used as a dietary supplement by approximately 10 million US consumers, second only to calcium supplementation. Limited scientific research has supported the potential of chromium to be beneficial in diabetes to improve blood sugar control and insulin sensitivity, yet many of these studies have design flaws and the relevance of the research in the US population has been questioned. Research on use of complementary \& alternative medicine (CAM) suggests as many as 40% use CAM in combination with conventional medicine. Research performed at the Bastyr Center for Natural Health suggests 69% of patients get chromium as part of their treatment and 45% are on oral medications for blood sugar control. Metformin is the most commonly prescribed oral medication for diabetes in the world. The combination of chromium and metformin has never been studied in a clinical trial despite frequent use in combination. Additionally, research suggests chromium and metformin share at least one mechanism of action leading to questions about possible interactions - both favorable and unfavorable - resulting from the combination.
Type 2 diabetes remains the sixth leading cause of death in the US. Despite evolving technology and development of new medications, epidemiological data shows that only 37% of patients are in good glycemic control as defined by the American Diabetes Association. Recent large trials (UKPDS) suggest that any improvement in blood sugar control leads to favorable outcomes.
Human research suggests chromium improves insulin receptor sensitivity leading to blood sugar reduction. Research also shows blood levels of chromium are lower in people with type 2 diabetes and diabetic patients lose more chromium in their urine than people without diabetes.
This pilot trial will recruit type 2 diabetic subjects already on metformin and treat them with chromium picolinate for 8 weeks. The results of the trial will provide vital preliminary data including safety and size of effect to direct future, larger studies.
- Conditions
- Type 2 Diabetes
- Being tested
- Chromium Picolinate
- Medical subject headings
- Diabetes Mellitus, Type 2
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
Chromium PicolinateDrug
What is being measured
The primary outcome is the main question the study is designed to answer.
Safety/Adverse Events
Hemoglobin A1c
Secondary outcomes (3)
Fasting Blood Glucose, Fasting Insulin, HOMA Index
Lipid Profile: total cholesterol, LDL, HDL, Triglycerides
Oral Glucose Tolerance Test
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted1 Jun 2006 (estimated)
- Study startJan 2006
- Study completionMar 2007
Why it stopped: Issues w/recruitment
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Other trials for Type 2 DiabetesStudies 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 1
- Primary purpose
- Treatment
- Allocation
- Randomised
- Intervention model
- Single group
- Masking
- Double blind
- Enrolment
- 40 participants (estimated)
Sponsor and investigators
- Lead sponsor
- Bastyr University
- Sponsor type
- University, hospital or other
- Investigators
- Ryan Bradley, ND, Principal investigator, Bastyr University
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT00332085
- Sponsor's protocol ID
- 190
- Status last verified
- Oct 2007
- First submitted
- 30 May 2006
- Last updated
- 31 Oct 2007
- Results posted
- No
Study at a glance
From the registry record, last updated by the sponsor on 31 Oct 2007. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Pilot Trial of Chromium-Metformin Combination in Type 2 Diabetes: Impact on Blood Sugar Control and Insulin Resistance
- ClinicalTrials.gov ID
- NCT00332085
- Acronym / sponsor ID
- 190
- Conditions
- Type 2 Diabetes
- Phase
- Phase 1
- Study type
- Interventional
- Recruitment status
- TerminatedReason stopped: Issues w/recruitment
- Enrolment
- 40 participants (estimated)
- Lead sponsor
- Bastyr UniversityUniversity, hospital or other
- Study start
- Jan 2006
- Study completion
- Mar 2007 (actual)
- First posted
- 1 Jun 2006 (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.
This pilot trial seeks to gather preliminary data on the combination of chromium picolinate, the most commonly used form of chromium, and metformin. The trial will recruit type 2 diabetes subjects already on metformin and treat them with chromium for 8 weeks. The results of this trial will provide vital preliminary data including safety and size of effect to direct future studies.
Detailed description
Chromium is widely marketed for use in diabetes and is used as a dietary supplement by approximately 10 million US consumers, second only to calcium supplementation. Limited scientific research has supported the potential of chromium to be beneficial in diabetes to improve blood sugar control and insulin sensitivity, yet many of these studies have design flaws and the relevance of the research in the US population has been questioned. Research on use of complementary \& alternative medicine (CAM) suggests as many as 40% use CAM in combination with conventional medicine. Research performed at the Bastyr Center for Natural Health suggests 69% of patients get chromium as part of their treatment and 45% are on oral medications for blood sugar control. Metformin is the most commonly prescribed oral medication for diabetes in the world. The combination of chromium and metformin has never been studied in a clinical trial despite frequent use in combination. Additionally, research suggests chromium and metformin share at least one mechanism of action leading to questions about possible interactions - both favorable and unfavorable - resulting from the combination.
Type 2 diabetes remains the sixth leading cause of death in the US. Despite evolving technology and development of new medications, epidemiological data shows that only 37% of patients are in good glycemic control as defined by the American Diabetes Association. Recent large trials (UKPDS) suggest that any improvement in blood sugar control leads to favorable outcomes.
Human research suggests chromium improves insulin receptor sensitivity leading to blood sugar reduction. Research also shows blood levels of chromium are lower in people with type 2 diabetes and diabetic patients lose more chromium in their urine than people without diabetes.
This pilot trial will recruit type 2 diabetic subjects already on metformin and treat them with chromium picolinate for 8 weeks. The results of the trial will provide vital preliminary data including safety and size of effect to direct future, larger studies.
Study design
- Primary purpose
- Treatment
- Allocation
- Randomised
- Intervention model
- Single group
- Masking
- Double blind
Who may qualify
- Ages
- 18 to 65 years
- Sex
- All
- Healthy volunteers
- Not accepted
- Age groups
- Adult, Older adult
Key inclusion criteria (1 listed)
- ICD-9 Diagnosis of TYpe 2 Diabetes (250.XX) for two years or less and treated with metformin Patients having completed dose titration of metformin as prescribed by their physician and have reached a stble dose between 1000-2550 mg per day for at least two months HbA1c: 7.0-10.5%
Key exclusion criteria (5 listed)
- Duration of metformin treatment longer than 1 year at start time of study medication Historical or current use of oral anti-diabetes (OAD) medication (other than metformin) or use of insulin History ofmyocardial infarction within the lat 6 months, unstable angina, uncontrollable hypertension with systolic greater than 180 or diastolic greater than 110.
- Clinical or objective finding suggestive of congestive heart failure. Individuals not receiving routine management by their primary car eproviders and/or endocrinologists for their type 2 diabetes, including routine ECG and ophthamological evaluations.
- Women of child-bearing age not using standard birth control measures. Hemoglobin <11 or > 16; Hematocrig <32 or > 50; WBC <3,000 or >12,000; Platelets <150,000 or >500,000 Serum Creatinine >1.4 mg/dL; BUN >25 mg/dL Presence of greater than +1 protein on random macroscopic urinalysis at screening without a rule out of microalbuminuria Total bilirubin >1.5 mg/dL LFTs: AST>60 IU/L; ALT>65/L; Alkaline phosphatase >120 Iu/L. Isolated LFT elevations with an ultrasound diagnosis of non-alcoholic Steatohepatitis and a lab rule out of viral hepatitis will be included in the study with careful monitoring of LFTs.
- Subjects currently taking nutritional supplements, including multivatmin for study duration; subjects will be asked to discontinue any nutritional supplementation at the screening telephone interview 1 week prior to screening lab work and 4 week sprior to baseline lab work.
- Subjects taking lipid lowering medications except statins (i.e. niacin, fibrates, resins) due to possible chromium binding.
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 |
|---|---|---|
| Chromium Picolinate | Drug | – |
Primary outcome
Safety/Adverse Events
Hemoglobin A1c
3 secondary outcomes
Fasting Blood Glucose, Fasting Insulin, HOMA Index
Lipid Profile: total cholesterol, LDL, HDL, Triglycerides
Oral Glucose Tolerance Test
Results and safety
The study was stopped early (reason given: Issues w/recruitment). Results are not available in the source record.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 31 Oct 2007.
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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.
Ryan Bradley, ND principal investigator
Bastyr University
2 sites in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
A Phase 1 study testing Chromium Picolinate in people with Type 2 Diabetes, run by Bastyr University at 2 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 1 inclusion and 5 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: stopped early, as of the sponsor's last update on 31 Oct 2007. Status can change between updates, so confirm with the study contact before making plans.
Where is the study taking place?
The record lists 2 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. 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 1 studies test a treatment in a small group of people for the first time or in a new way, mainly to check safety and find the right dose.
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 was stopped early (reason given: Issues w/recruitment). Results are not available in the source record.
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?
Safety/Adverse Events. The study lists 2 primary outcomes in all. 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 31 Oct 2007.