UMIN-CTR Clinical Trial

Unique ID issued by UMIN UMIN000061182
Receipt number R000069619
Scientific Title A Randomized, Double-Blind, Placebo-Controlled, Parallel-Group Superiority Trial on the Effects of Synbiotics on the Gut Microbiome in Healthy Elderly Individuals
Date of disclosure of the study information 2026/04/07
Last modified on 2026/03/31 09:10:02

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Basic information

Public title

A Randomized, Double-Blind, Placebo-Controlled, Parallel-Group Superiority Trial on the Effects of Synbiotics on the Gut Microbiome in Healthy Elderly Individuals

Acronym

A Randomized, Double-Blind, Placebo-Controlled, Parallel-Group Superiority Trial on the Effects of Synbiotics on the Gut Microbiome in Healthy Elderly Individuals

Scientific Title

A Randomized, Double-Blind, Placebo-Controlled, Parallel-Group Superiority Trial on the Effects of Synbiotics on the Gut Microbiome in Healthy Elderly Individuals

Scientific Title:Acronym

A Randomized, Double-Blind, Placebo-Controlled, Parallel-Group Superiority Trial on the Effects of Synbiotics on the Gut Microbiome in Healthy Elderly Individuals

Region

Japan


Condition

Condition

No

Classification by specialty

Not applicable Adult

Classification by malignancy

Others

Genomic information

NO


Objectives

Narrative objectives1

Evaluate the effects of synbiotic intake on the gut environment in healthy elderly individuals.

Basic objectives2

Efficacy

Basic objectives -Others


Trial characteristics_1


Trial characteristics_2


Developmental phase



Assessment

Primary outcomes

Gut microbiota

Key secondary outcomes

<Secondary Evaluation Items>
1) Organic acids in stool
2) Stool pH
3) Putrefactive products in stool
4) Defecation status (fecal odor, stool consistency, frequency, stool volume)
5) Mood Profile Test
6) High-Sensitivity CRP
7) Sleep Status
8) NAD+
9) Body Composition
10) Skin Condition

<Safety>
Adverse events and side effects


Base

Study type

Interventional


Study design

Basic design

Parallel

Randomization

Randomized

Randomization unit

Individual

Blinding

Double blind -all involved are blinded

Control

Placebo

Stratification


Dynamic allocation


Institution consideration


Blocking


Concealment



Intervention

No. of arms

2

Purpose of intervention

Prevention

Type of intervention

Food

Interventions/Control_1

Oral intake of synbiotic powder (2 sticks in a day; 4 weeks).

Interventions/Control_2

Oral intake of the placebo powder (2 sticks in a day; 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

65 years-old <=

Age-upper limit

75 years-old >

Gender

Male and Female

Key inclusion criteria

Individuals aged 65 or older but under 75 at the time of obtaining the informed consent document for trial participation.

Key exclusion criteria

1) Individuals currently suffering from any chronic disease and undergoing drug therapy.
2) Individuals regularly taking medications that affect the intestinal environment (such as antibiotics, intestinal regulators, laxatives, or purgatives).
3) Individuals regularly consuming foods or supplements containing bacteria such as lactic acid bacteria or bifidobacteria, oligosaccharides, or other ingredients that affect the intestinal environment or intestinal function.
4) Individuals with severe anemia.
5) Individuals with a BMI of 30 kg/m2 or higher.
6) Individuals whose average weekly alcohol consumption exceeds 40 g/day for men and 20 g/day for women, based on pure alcohol content.
7) Individuals with a smoking habit.
8) Individuals participating in other human clinical trials.
9) Individuals receiving treatment for liver, kidney, heart, lung, digestive, blood, nervous system, endocrine system, or metabolic disorders, or individuals with a history of severe conditions in these areas.
10) Individuals with a history of drug allergies or severe food allergies.
11) Individuals who underwent blood collection of 400 mL or more within 12 weeks prior to the start of intake.
12) Individuals deemed unsuitable as subjects by the study physician based on results from subject background, physical examination findings, medical history and physical examination, physical examination, and laboratory tests.

Target sample size

52


Research contact person

Name of lead principal investigator

1st name Shigefumi
Middle name
Last name Kitagawa

Organization

Morinaga Milk Industry Co., Ltd.

Division name

Health Care & Nutritional Science Institute R&D Division

Zip code

252-8583

Address

5-1-83, Higashihara, Zama city, Kanagawa, Japan

TEL

046-252-3057

Email

s_kitagw@morinagamilk.co.jp


Public contact

Name of contact person

1st name Ryoma
Middle name
Last name Shimizu

Organization

TES Holdings Co., Ltd.

Division name

Administrative Department of Clinical Trials

Zip code

110-0015

Address

6F Kairaku Building 2-7-5 Higashiueno Taito-ku Tokyo 110-0015, JAPAN

TEL

+81-3-6801-8480

Homepage URL


Email

r.shimizu@tes-h.co.jp


Sponsor or person

Institute

TES Holdings Co., Ltd.

Institute

Department

Personal name



Funding Source

Organization

Morinaga Milk Industry Co., Ltd.

Organization

Division

Category of Funding Organization

Profit organization

Nationality of Funding Organization



Other related organizations

Co-sponsor


Name of secondary funder(s)



IRB Contact (For public release)

Organization

Ueno-Asagao Clinic Ethical Review Committee

Address

6F Kairaku Building 2-7-5 Higashiueno Taito-ku Tokyo 110-0015, JAPAN

Tel

+81-3-6240-1162

Email

jimukyoku@tes-h.co.jp


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

2026 Year 04 Month 07 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

Preinitiation

Date of protocol fixation

2026 Year 02 Month 03 Day

Date of IRB

2026 Year 03 Month 05 Day

Anticipated trial start date

2026 Year 06 Month 08 Day

Last follow-up date

2026 Year 07 Month 27 Day

Date of closure to data entry


Date trial data considered complete


Date analysis concluded



Other

Other related information



Management information

Registered date

2026 Year 04 Month 07 Day

Last modified on

2026 Year 03 Month 31 Day



Link to view the page

Value
https://center6.umin.ac.jp/cgi-open-bin/ctr_e/ctr_view.cgi?recptno=R000069619