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Recruitment status
Unique ID issued by UMIN UMIN000001241
Receipt No. R000001511
Scientific Title Analysis for effect of metformin on aberrant crypt foci (ACF)
Date of disclosure of the study information 2008/07/14
Last modified on 2010/06/21

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Basic information
Public title Analysis for effect of metformin on aberrant crypt foci (ACF)
Acronym Analysis for effect of metformin on ACF
Scientific Title Analysis for effect of metformin on aberrant crypt foci (ACF)
Scientific Title:Acronym Analysis for effect of metformin on ACF
Region
Japan

Condition
Condition Subjects with aberrant crypt foci (ACF)
Classification by specialty
Gastroenterology
Classification by malignancy Others
Genomic information NO

Objectives
Narrative objectives1 Both obesity and type 2 diabetes mellitus have been reported to be associated with an elevated risk of colorectal cancer. It is thought that insulin resistance is associated with obesity and type 2 diabetes mellitus. The metformin is insulin sensitizer. The aim of this study is to examine the effect of metformin on ACF and polyps.
Basic objectives2 Efficacy
Basic objectives -Others
Trial characteristics_1 Confirmatory
Trial characteristics_2 Pragmatic
Developmental phase Phase III

Assessment
Primary outcomes Observation of ACF and polyps using magnifying endoscopy
Key secondary outcomes

Base
Study type Interventional

Study design
Basic design Parallel
Randomization Randomized
Randomization unit Individual
Blinding Open -but assessor(s) are blinded
Control No treatment
Stratification NO
Dynamic allocation NO
Institution consideration
Blocking NO
Concealment Numbered container method

Intervention
No. of arms 2
Purpose of intervention Prevention
Type of intervention
Medicine
Interventions/Control_1 Oral administration of metformin 250mg once daily for 4 weeks.
Interventions/Control_2 No administration of newly drug for 4 weeks.
Interventions/Control_3
Interventions/Control_4
Interventions/Control_5
Interventions/Control_6
Interventions/Control_7
Interventions/Control_8
Interventions/Control_9
Interventions/Control_10

Eligibility
Age-lower limit
20 years-old <=
Age-upper limit

Not applicable
Gender Male and Female
Key inclusion criteria a. Obtaining informed consent
b. Positive for ACF
Key exclusion criteria a. Liver cirrhosis or chronic hepatic, chronic renal failure
b. Women who are pregnant or with a possibility of pregnancy
c. Alcohol dependence or drug dependence
d. Drug allergy
e. Heart failure
f. History of lactic acidosis
g. Those who have started to use different medication for diabetes mellitus from metformin-alone (including insulin) in study period
h. The patient that it is already taken metformin
i. History of colorectal cancer
j. Family history of colorectal cancer
k. The patient currently taking NSAIDs
l. Inadequate to entry to this study
Target sample size 100

Research contact person
Name of lead principal investigator
1st name
Middle name
Last name Atsushi Nakajima
Organization Yokohama City University Graduate School of Medicine
Division name Gastroenterology Division
Zip code
Address 3-9 Fuku-ura, Kanazawa-ku, Yokohama, Japan
TEL
Email

Public contact
Name of contact person
1st name
Middle name
Last name Hirokazu Takahashi
Organization Yokohama City University Graduate School of Medicine
Division name Gastroenterology Division
Zip code
Address 3-9 Fuku-ura, Kanazawa-ku, Yokohama, Japan
TEL
Homepage URL
Email

Sponsor
Institute Gastroenterology Division, Yokohama City University Graduate School of Medicine
Institute
Department

Funding Source
Organization Grant from Ministry of Education, Science, Sports and Culture in Japan
Organization
Division
Category of Funding Organization
Nationality of Funding Organization Japan

Other related organizations
Co-sponsor
Name of secondary funder(s)

IRB Contact (For public release)
Organization
Address
Tel
Email

Secondary IDs
Secondary IDs NO
Study ID_1
Org. issuing International ID_1
Study ID_2
Org. issuing International ID_2
IND to MHLW

Institutions
Institutions

Other administrative information
Date of disclosure of the study information
2008 Year 07 Month 14 Day

Related information
URL releasing protocol
Publication of results Unpublished

Result
URL related to results and publications
Number of participants that the trial has enrolled
Results
Results date posted
Results Delayed
Results Delay Reason
Date of the first journal publication of results
Baseline Characteristics
Participant flow
Adverse events
Outcome measures
Plan to share IPD
IPD sharing Plan description

Progress
Recruitment status
Date of protocol fixation
2008 Year 07 Month 10 Day
Date of IRB
Anticipated trial start date
2008 Year 07 Month 01 Day
Last follow-up date
2010 Year 06 Month 01 Day
Date of closure to data entry
Date trial data considered complete
Date analysis concluded

Other
Other related information

Management information
Registered date
2008 Year 07 Month 10 Day
Last modified on
2010 Year 06 Month 21 Day


Link to view the page
URL(English) https://upload.umin.ac.jp/cgi-open-bin/ctr_e/ctr_view.cgi?recptno=R000001511

Research Plan
Registered date File name

Research case data specifications
Registered date File name

Research case data
Registered date File name


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