Study on Low Dose Temozolomide Plus Metformin or Placebo in Patient With Recurrent or Refractory Glioblastoma (METT)
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The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Know the risks and potential benefits of clinical studies and talk to your health care provider before participating. Read our disclaimer for details. |
ClinicalTrials.gov Identifier: NCT03243851 |
Recruitment Status :
Recruiting
First Posted : August 9, 2017
Last Update Posted : April 4, 2019
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Condition or disease | Intervention/treatment | Phase |
---|---|---|
Glioblastoma | Drug: Temozolomide+Metformin Drug: Temozolomide+Placebo | Phase 2 |
Studies will investigate the efficacy and safety of low dose Temozolomide with Metformin or placebo for the patients with recurrent or refractory Glioblastoma.
The dosage of the Metformin will follow the domestically permitted dose to minimize side effects.
The patients will be allocated randomly to arm 1(experimental) and arm 2(placebo controlled) and administered the investigational products for up to 6 cycle. Each cycle consists of 4 weeks.
After 6 cycle(24 weeks), the patients will be checked progression and survival every 24 weeks up to 96 weeks.
Study Type : | Interventional (Clinical Trial) |
Estimated Enrollment : | 108 participants |
Allocation: | Randomized |
Intervention Model: | Parallel Assignment |
Intervention Model Description: | Arm 1 : Low dose temozolomide+metformin Arm 2 : Low dose temozolomide+placebo |
Masking: | Quadruple (Participant, Care Provider, Investigator, Outcomes Assessor) |
Masking Description: | Double blinded |
Primary Purpose: | Treatment |
Official Title: | Efficacy and Safety of Low Dose Temozolomide Plus Metformin as Combination Chemotherapy Compared With Low Dose Temozolomide Plus Placebo in Patient With Recurrent or Refractory Glioblastoma |
Actual Study Start Date : | November 21, 2016 |
Estimated Primary Completion Date : | December 31, 2019 |
Estimated Study Completion Date : | December 31, 2019 |

Arm | Intervention/treatment |
---|---|
Experimental: Temozolomide+metformin
Temozolomide : 1 cycle of 4 weeks with daily dose 50mg/m2(BSA: Body Surface Area) up to 6 cycles for 24 weeks Metformin :
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Drug: Temozolomide+Metformin
Low dose temozolomide+metformin for 24 weeks |
Placebo Comparator: Temozolomide+placebo
Temozolomide : 1 cycle of 4 weeks with daily dose 50mg/m2(BSA: Body Surface Area) up to 6 cycles for 24 weeks Placebo:
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Drug: Temozolomide+Placebo
Low dose temozolomide+placebo for 24 weeks |
- Comparison of progression-free survival obtained from progression-free survival curve [ Time Frame: 24 weeks ]Comparison of progression-free survival obtained from progression-free survival curve
- Response Rate [ Time Frame: 4 weeks, 8 weeks, 16 weeks, 24 weeks thereafter every 24 weeks up to 96 weeks ]Tumor Response Rate
- Tumor control probability [ Time Frame: 4 weeks, 8 weeks, 16 weeks, 24 weeks thereafter every 24 weeks up to 96 weeks ]Tumor control probability
- 6 month progression free survival [ Time Frame: 24 weeks ]6 month progression free survival
- 6 month overall survival [ Time Frame: 24 weeks ]6 month overall survival
- Assessment of the quality of life of cancer patients [ Time Frame: 4 weeks, 8 weeks, 16 weeks, 24 weeks ]EORTC QLQ-C30 and EORTC QLQ-BN20

Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the contacts provided below. For general information, Learn About Clinical Studies.
Ages Eligible for Study: | 19 Years and older (Adult, Older Adult) |
Sexes Eligible for Study: | All |
Accepts Healthy Volunteers: | No |
Inclusion Criteria:
- Progressive or recurrent Glioblastoma conformed by histopathological or radiological diagnosis. Progressive or recurrent Glioblastoma during or after standard therapy (Temozolomide after Temozolomide and radiation therapy; Stupp regimen) after histopathological diagnosis of Glioblastoma Recurrence or progression is diagnosed according to histopathological diagnosis or revised RANO(Response Assessment in Neuro-Oncology) criteria c
- Karnofsky performance status(KPS) ≥ 60%
- Age ≥ 19 years old
- At least 4 weeks after operation or chemotherapy
-
Normal in hematological finding, liver and kidney function
- Hematology ANC > 1.500/mm³, Platelet > 100,000/mm³, WBC > 3×10^9/L, Hemoglobin > 9g/dL
- Liver function Total Bilirubin level ≤ 1.5×ULN(in case of isolated hyperbilirubinemia ≤2.5 x ULN) AST / ALT < 2.5×ULN
- Renal function Serum creatinine ≤ 1.5mg/dL
- Be informed of the nature of the study and obtained a written informed consent
- A legal representative agrees to the trial when a subject is unable to communicate smoothly due to neurologic defect
- If a fertile woman who has been confirmed negative to a urine or blood pregnancy test within 28 days prior to the trial
Exclusion Criteria:
- Pregnant or breast feeding
- Cancer history within 5 years excluding cancer in the skin cells and cervix
- Active infections within two weeks
- Leptomeningeal metastasis
- Patients diagnosed with diabetes
- Hypersensitive or intolerance to Metformin
- Patients who are currently taking Metformin, sulfonylureas, thiazolidinediones, and insulin, regardless of reason
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Other serious diseases or medical conditions that include :
- Patients who suffer from unstable heart disease despite treatment.
- Patients having a heart attack within 6 months prior to the start of trial
- Patients who suffer from severe nerve or psychosis that includes dementia or strokes.
- Patients with an uncontrolled infection
- Patient with uncontrolled hypertension, congestive heart failure, unstable angina, or incomplete arrhythmia
- Those who have participated in other clinical trials may not recover from the toxicity of the treatment.

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.
Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT03243851
Contact: Yong-Kil Hong, MD., PhD. | +82-2-2258-2101 | hongyk@catholic.ac.kr | |
Contact: Seung Ho Yang, MD., PhD. | +82-31-249-8304 | 72ysh@catholic.ac.kr |
Korea, Republic of | |
National Cancer Center Korea | Recruiting |
Ilsan, Gyeonggi-Do, Korea, Republic of, 10408 | |
Contact: Heon Yoo, MD., PhD. +82-31-920-1249 heonyoo@ncc.re.kr | |
Seoul National University Bundang Hospital | Recruiting |
Seongnam-si, Gyeonggi-Do, Korea, Republic of, 13620 | |
Contact: Yu Jung Kim, MD., PhD. +82-31-787-8210 cong1005@gmail.com | |
Ajou University Hospital | Recruiting |
Suwon-si, Gyeonggi-Do, Korea, Republic of, 16499 | |
Contact: Se Hyuk Kim, MD., PhD. +82-31-219-3559 nsksh@ajou.ac.kr | |
Chonnam National University Hwasun Hospital | Recruiting |
Hwasun, Jeollanam-Do, Korea, Republic of, 58128 | |
Contact: Shin Jung, MD., PhD. +82-2-379-8954 sjung@chonnam.ac.kr | |
Incheon St. Mary's Hospital | Recruiting |
Incheon, Korea, Republic of, 21431 | |
Contact: Dong Sup Chung, MD., PhD. +82-32-280-5876 dschung@catholic.ac.kr | |
Seoul National University Hospital | Recruiting |
Seoul, Korea, Republic of, 03080 | |
Contact: Tae Min Kim, MD., PhD. +82-2-2072-1672 gabriel9@snu.ac.kr | |
Severance Hospital | Recruiting |
Seoul, Korea, Republic of, 03722 | |
Contact: Jong Hee Chang, MD., PhD. +82-2-2228-2162 changjh@yuhs.ac | |
Konkuk University Hospital | Recruiting |
Seoul, Korea, Republic of, 05030 | |
Contact: Young Cho Koh, MD., PhD. +82-2-2030-7622 kohyc@kuh.ac.kr | |
Asan Medical Center | Recruiting |
Seoul, Korea, Republic of, 05505 | |
Contact: Jeong Hoon Kim, MD., PhD. +82-2-3010-3559 jhkim1@amc.seoul.kr | |
Samsung Medical Center | Recruiting |
Seoul, Korea, Republic of, 06351 | |
Contact: Do Hyun Nam, MD., PhD. +82-2-3410-3497 nsnam@skku.edu | |
Seoul St Mary's Hospital | Recruiting |
Seoul, Korea, Republic of, 06591 | |
Contact: Yong-Kil Hong, MD., PhD. +82-2-2258-2101 hongyk@catholic.ac.kr | |
Saint Vincent's Hospital, Korea | Recruiting |
Suwon-si, Korea, Republic of, 16247 | |
Contact: Seung Ho Yang, MD., PhD. +82-31-249-8304 72ysh@catholic.ac.kr |
Principal Investigator: | Yong-Kil Hong, MD.,PhD. | Seoul St. Mary's Hospital |
Responsible Party: | Yong-Kil Hong, MD., PhD., Seoul St. Mary's Hospital |
ClinicalTrials.gov Identifier: | NCT03243851 History of Changes |
Other Study ID Numbers: |
KNOG-1501 |
First Posted: | August 9, 2017 Key Record Dates |
Last Update Posted: | April 4, 2019 |
Last Verified: | April 2019 |
Individual Participant Data (IPD) Sharing Statement: | |
Plan to Share IPD: | Undecided |
Studies a U.S. FDA-regulated Drug Product: | No |
Studies a U.S. FDA-regulated Device Product: | No |
Glioblastoma |
Glioblastoma Astrocytoma Glioma Neoplasms, Neuroepithelial Neuroectodermal Tumors Neoplasms, Germ Cell and Embryonal Neoplasms by Histologic Type Neoplasms Neoplasms, Glandular and Epithelial |
Neoplasms, Nerve Tissue Metformin Temozolomide Hypoglycemic Agents Physiological Effects of Drugs Antineoplastic Agents, Alkylating Alkylating Agents Molecular Mechanisms of Pharmacological Action Antineoplastic Agents |