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Recruitment status Completed
Unique ID issued by UMIN UMIN000033813
Receipt No. R000038266
Scientific Title Study 2 Verifying the Improving Effect of Green Tea Ingredients on Cognitive Function
Date of disclosure of the study information 2018/09/07
Last modified on 2019/01/17

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Basic information
Public title Study 2 Verifying the Improving Effect of Green Tea Ingredients on Cognitive Function
Acronym Study 2 Verifying the Improving Effect of Green Tea Ingredients on Cognitive Function
Scientific Title Study 2 Verifying the Improving Effect of Green Tea Ingredients on Cognitive Function
Scientific Title:Acronym Study 2 Verifying the Improving Effect of Green Tea Ingredients on Cognitive Function

Condition Healthy subjects
Classification by specialty
Classification by malignancy Others
Genomic information NO

Narrative objectives1 The objective of this study was to investigate the effects of continuous intake of test foods for 12 weeks on cognitive function of Japanese men and women who are aware of decline in cognitive function when they are 50 years of age or older and 69 years of age or younger.
Basic objectives2 Safety,Efficacy
Basic objectives -Others
Trial characteristics_1
Trial characteristics_2
Developmental phase

Primary outcomes Cognitrax,MMSE
Key secondary outcomes Pittsburgh Sleep Quality Index, Blood BDNF, Blood Abeta (1-40, 1-42, oligomers), Blood sAPP alpha, MicroRNAs

Study type Interventional

Study design
Basic design Parallel
Randomization Randomized
Randomization unit Individual
Blinding Double blind -all involved are blinded
Control Placebo
Stratification YES
Dynamic allocation NO
Institution consideration Institution is not considered as adjustment factor.
Blocking NO
Concealment Central registration

No. of arms 2
Purpose of intervention Prevention
Type of intervention
Interventions/Control_1 12-week intake of the test food
Interventions/Control_2 12-week intake of the placebo food

Age-lower limit
50 years-old <=
Age-upper limit
69 years-old >=
Gender Male and Female
Key inclusion criteria 1) Japanese men and women aged 50 to 69 years at the time of informed consent
2) Those who are aware of cognitive decline
3) Persons able to take 3 capsules daily for 12 weeks.
4)Persons with an M MMSE score of 24 or more
5) Non smoker
6) A person who has received sufficient explanation of the purpose and content of the research, is capable of giving informed consent, voluntarily volunteers to participate in the research, and consents to participate in the research in writing.
Key exclusion criteria 1) Subjects who are currently receiving any medications or outpatient treatment.
2) History of liver disease or serious renal, endocrine, cardiovascular, gastrointestinal, pulmonary, hematologic, or metabolic disease
Or those with a merger
3) Patients with a history of drug or food allergy
4) People who use health foods and supplements that may affect cognitive function
5) Persons using drugs that may affect cognitive function
6) Persons with extreme skipped eating
7) Excessively irregular lifestyle such as eating or sleeping
8) Patients suspected of having insomnia (insomnia, sleep apnea syndrome, etc.)
9) Persons with a current or past history of psychiatric disorders (depression, etc.)
10) Persons with a current or past history of alcoholism
11) Subjects who have participated in other human clinical studies within the past 3 months or are expected to participate in other human clinical studies during the study period.
12) Persons whose working hours are irregular, such as those who have worked at night.
13) Subjects who are pregnant, breast-feeding, or willing to become pregnant during the study period
14) Persons who are difficult to comply with the records of various surveys
15) Other than the above, the principal investigator judged that the subject was ineligible for the study.
Target sample size 52

Research contact person
Name of lead principal investigator
1st name
Middle name
Last name Takihara Takanobu
Organization ITOEN,Ltd.
Division name Central Research Institute
Zip code
Address 21 Mekami, Makinohara-shi, Shizuoka 421-0516, Japan
TEL 0548-54-1247

Public contact
Name of contact person
1st name
Middle name
Last name Ochitani Daisuke
Organization HUMA R&D CORP
Division name Clinical Development Division
Zip code
Address Oekkusu Bldg10F 5-31-19 Shiba Minato-ku Tokyo 108-0014 Japan
TEL 81-3-3431-1260
Homepage URL

Institute HUMA R&D CORP

Funding Source
Organization ITOEN,LTD.
Category of Funding Organization Profit organization
Nationality of Funding Organization Japan

Other related organizations
Name of secondary funder(s)

IRB Contact (For public release)

Secondary IDs
Secondary IDs NO
Study ID_1
Org. issuing International ID_1
Study ID_2
Org. issuing International ID_2


Other administrative information
Date of disclosure of the study information
2018 Year 09 Month 07 Day

Related information
URL releasing protocol
Publication of results Unpublished

URL related to results and publications
Number of participants that the trial has enrolled
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

Recruitment status Completed
Date of protocol fixation
2018 Year 07 Month 13 Day
Date of IRB
Anticipated trial start date
2018 Year 09 Month 10 Day
Last follow-up date
2018 Year 12 Month 14 Day
Date of closure to data entry
2018 Year 12 Month 19 Day
Date trial data considered complete
2019 Year 01 Month 18 Day
Date analysis concluded
2019 Year 04 Month 30 Day

Other related information

Management information
Registered date
2018 Year 08 Month 20 Day
Last modified on
2019 Year 01 Month 17 Day

Link to view the page

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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