A Pilot Study of Metformin Therapy in Patients With Relapsed Chronic Lymphocytic Leukemia (CLL) and Untreated CLL
Overview[ - collapse ][ - ]
Purpose | Metformin is an antidiabetic drug which is an inexpensive and generally well tolerated medication. More recently metformin has been shown to act against carcinomas by two mechanisms: 1) an indirect, insulin‐dependent mechanism which sensitizes tissues to insulin, inhibits hepatic gluconeogenesis, and stimulates uptake of glucose in muscle, thereby reducing fasting blood glucose and circulating levels of insulin, lowering the pro survival activity of the insulin/INSR axis, and 2) a direct, insulin‐independent mechanism which activates the AMP‐activated protein kinase (AMPK) pathway and leads to inhibition of the mTOR pathway. Given the investigators preliminary published data on insulin and mTOR inhibition[1] metformin is an attractive candidate for a pilot clinical trial in CLL patients. |
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Condition | Relapsed Chronic Lymphocytic Leukemia |
Intervention | Drug: Metformin |
Phase | Phase 2 |
Sponsor | University of Michigan Cancer Center |
Responsible Party | University of Michigan Cancer Center |
ClinicalTrials.gov Identifier | NCT01750567 |
First Received | October 2, 2012 |
Last Updated | July 5, 2013 |
Last verified | July 2013 |
Tracking Information[ + expand ][ + ]
First Received Date | October 2, 2012 |
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Last Updated Date | July 5, 2013 |
Start Date | October 2012 |
Estimated Primary Completion Date | October 2016 |
Current Primary Outcome Measures | Time to treatment failure [Time Frame: every 3 months] [Designated as safety issue: Yes]Time to treatment failure: While patients are on metformin therapy, time to treatment failure will be defined as one or all of the following criteria: ALC > 5000 on 3 occasions after start of metformin treatment and increasing by 25% or more on each occasion, which will be measured every 3 months. An increase of Rai Stage by one stage. An increase in any lymph node by >50% as assessed by either physical exam (all patients) or CT scanning (only if ordered as part of routine clinical management). Worsening cytopenias (Hemoglobin <11 g/dl or platelet count <100,000) |
Current Secondary Outcome Measures |
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Descriptive Information[ + expand ][ + ]
Brief Title | A Pilot Study of Metformin Therapy in Patients With Relapsed Chronic Lymphocytic Leukemia (CLL) and Untreated CLL |
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Official Title | A Phase II Pilot Study of Metformin Therapy in Patients With Relapsed Chronic Lymphocytic Leukemia and Untreated CLL Patients With Genomic Deletion 11q |
Brief Summary | Metformin is an antidiabetic drug which is an inexpensive and generally well tolerated medication. More recently metformin has been shown to act against carcinomas by two mechanisms: 1) an indirect, insulin‐dependent mechanism which sensitizes tissues to insulin, inhibits hepatic gluconeogenesis, and stimulates uptake of glucose in muscle, thereby reducing fasting blood glucose and circulating levels of insulin, lowering the pro survival activity of the insulin/INSR axis, and 2) a direct, insulin‐independent mechanism which activates the AMP‐activated protein kinase (AMPK) pathway and leads to inhibition of the mTOR pathway. Given the investigators preliminary published data on insulin and mTOR inhibition[1] metformin is an attractive candidate for a pilot clinical trial in CLL patients. |
Detailed Description | Not Provided |
Study Type | Interventional |
Study Phase | Phase 2 |
Study Design | Intervention Model: Single Group Assignment, Masking: Open Label, Primary Purpose: Treatment |
Condition | Relapsed Chronic Lymphocytic Leukemia |
Intervention | Drug: Metformin Metformin is an antidiabetic drug which is an inexpensive and generally well tolerated medication. Other Names: Glucophage |
Study Arm (s) | Experimental: Metformin (Glucophage) The starting dose of metformin will be 500 mg po daily for one week. The dose can be escalated to 500 mg twice a day after one week, and further escalated to the final dose of 1000 mg twice a day in week 3 if the medication is tolerated without adverse side effects (refer to holding parameters described in section 9.3.3). All doses should be administered with food to decrease gastrointestinal upset. |
Recruitment Information[ + expand ][ + ]
Recruitment Status | Recruiting |
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Estimated Enrollment | 53 |
Estimated Completion Date | October 2016 |
Estimated Primary Completion Date | October 2016 |
Eligibility Criteria | Inclusion Criteria: 1. Patients should have a confirmed diagnosis of chronic lymphocytic leukemia defined as all of the following: ALC > 5000 Positive for either CD19 or CD 20 together with CD23 and CD5. Less than 55% atypical cells 2. Patients who relapse after receiving a one or more courses of fludarabine, bendamustine, cytoxan, rituxan, chlorambucil, or campath based therapy. 3. Patients should have findings of relapse by one or both of the following: ALC > 5000 on 2 consecutive occasions and increasing Any increase in lymphadenopathy over best response that has persisted for more than 3 months 4. Patient with confirmed del11q mutation may be included if untreated. 5. Age > or equal to 18 years old and < 80 years of age during the course of therapy 6. ECOG performance 0‐2 (see Appendix A) 7. Life expectancy > 12 months 8. Patients must have normal organ function as defined as below: AST and ALT < 2 times the upper limit of normal alkaline phosphatase < 2 ULN serum bilirubin < ULN (exception of Gilbert disease) serum creatinine less than or equal to 1.5 in males, or 1.4 in female GFR > 60 9. Ability to understand and the willingness to sign a written informed consent document 10. Patient must be able to drink and eat more than 75% of their usual daily meals. Exclusion Criteria: 1. Patients with active CLL disease requiring urgent chemotherapy 2. Patients may not be receiving any other investigational agents. 3. Patients less than 30 days from last treatment for CLL. 4. History of allergic reactions attributed to metformin or other biguanides. 5. Known diabetes (type 1 or 2), fasting glucose > or equal to 7.0 mmol/L (126 mg/dL), or HgbA1C > 6.5 6. Currently taking metformin, sulfonylureas, thiazolidinediones or insulin for any reason 7. Current or planned pregnancy or lactation in women of child bearing age (confirmed by negative pregnancy test prior to start of therapy). 8. Uncontrolled intercurrent illness including, but not limited to, ongoing or active infection and sepsis, symptomatic congestive heart failure, unstable angina pectoris, cardiac arrhythmia, or psychiatric illness/social situations that would limit compliance with study requirements 9. Conditions which would increase risk of lactic acidosis including: Known alcoholism or ingestion of more than 3 alcoholic beverages per day History of congestive heart failure defined as NYHA class III or IV 17 History of metabolic acidosis Ongoing or active infection concerning for sepsis or SIRS |
Gender | Both |
Ages | 18 Years |
Accepts Healthy Volunteers | No |
Contacts | Not Provided |
Location Countries | United States |
Administrative Information[ + expand ][ + ]
NCT Number | NCT01750567 |
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Other Study ID Numbers | UMCC 2012.025 |
Has Data Monitoring Committee | Yes |
Information Provided By | University of Michigan Cancer Center |
Study Sponsor | University of Michigan Cancer Center |
Collaborators | Not Provided |
Investigators | Principal Investigator: sami Malek, MD University of Michigan Cancer Center |
Verification Date | July 2013 |
Locations[ + expand ][ + ]
University of Michigan Comprehensive Cancer Center | Ann Arbor, Michigan, United States, 48109 Contact: Sami Malek, MD | 734-936-5310 | smalek@med.umich.eduPrincipal Investigator: Sami Malek, MD Recruiting |
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