UMIN-ICDS Clinical Trial

Unique ID issued by UMIN UMIN000062859
Receipt number R000071693
Scientific Title A Study on the Effects of Continuous Intake of the Test Food on Immune Function: A Randomized, Double-Blind, Placebo-Controlled, Parallel-Group Study
Date of disclosure of the study information 2026/09/09
Last modified on 2026/09/09 15:48:06

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Basic information

Public title

A Study on the Effects of Continuous Intake of the Test Food on Immune Function

Acronym

A Study on the Effects of Continuous Intake of the Test Food on Immune Function

Scientific Title

A Study on the Effects of Continuous Intake of the Test Food on Immune Function: A Randomized, Double-Blind, Placebo-Controlled, Parallel-Group Study

Scientific Title:Acronym

A Study on the Effects of Continuous Intake of the Test Food on Immune Function: A Randomized, Double-Blind, Placebo-Controlled, Parallel-Group Study

Region

Japan


Condition

Condition

Healthy participants

Classification by specialty

Adult

Classification by malignancy

Others

Genomic information

NO


Objectives

Narrative objectives1

To investigate the effects of 12-week continuous intake of the test food on immune function in healthy individuals who subjectively feel susceptible to catching colds through a randomized, double-blind, placebo-controlled, parallel-group study.

Basic objectives2

Safety,Efficacy

Basic objectives -Others


Trial characteristics_1

Confirmatory

Trial characteristics_2

Pragmatic

Developmental phase

Not applicable


Assessment

Primary outcomes

pDC

Key secondary outcomes

(1) Cumulative days of common cold symptoms
(2) Maximum duration of common cold symptoms


Base

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

YES

Concealment



Intervention

No. of arms

2

Purpose of intervention

Treatment

Type of intervention

Food

Interventions/Control_1

Test food group: Tablets containing lactic acid bacteria (1 tablet daily for 12 weeks)

Interventions/Control_2

Placebo group: Placebo tablets (1 tablet daily for 12 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

65 years-old >

Gender

Male and Female

Key inclusion criteria

(1) Healthy Japanese male and female subjects aged 20 to 64 years at the time of providing informed consent.
(2) Participants who subjectively feel that they easily catch colds in daily life.
(3) Participants with relatively low salivary sIgA levels at the visit screening test.
(4) Participants who have received a thorough explanation of the purpose and content of the trial, possess the capacity to consent, fully understand the content, and can provide personal consent via electronic informed consent.

Key exclusion criteria

(1) Participants receiving medical treatment/medication for autoimmune/immunodeficiency diseases or allergic diseases, or planning to during the study.
(2) Participants regularly using immunosuppressants, steroids, antiallergics, antihistamines, or intestinal regulators.
(3) Participants with chronic diseases (e.g., diabetes, dyslipidemia, hypertension) receiving treatment/medication.
(4) Participants with a history of serious cerebrovascular, cardiac, hepatic, renal, hematological, or endocrine diseases.
(5) Participants with a history of serious gastrointestinal diseases (e.g., gastrectomy, bowel resection; excluding appendectomy).
(6) Participants at risk of allergic reactions to the test foods.
(7) Participants with significant abnormalities in screening tests (vital signs, physical examinations, or blood tests).
(8) Participants who experienced feeling unwell during past blood sampling.
(9) Participants who donated 200 mL blood within 4 weeks or component blood within 2 weeks; females who donated 400 mL within 16 weeks; males who donated 400 mL within 12 weeks.
(10) Participants who may develop pollinosis during the study period (Dec-Mar).
(11) Participants vaccinated within 4 weeks prior to screening, or unable to agree not to receive vaccines during the study.
(12) Participants with oral diseases with bleeding tendency that may contaminate saliva.
(13) Participants unable to stop intake of FOSHU, Foods with Function Claims, or supplements.
(14) Current smokers.
(15) Regular alcohol drinkers (approx. 60 g/day or more).
(16) Participants with extremely irregular sleep or dietary habits.
(17) Participants whose living environment, dietary, or exercise habits may change significantly.
(18) Pregnant, lactating, or planning to become pregnant females.
(19) Participants who are participating, have participated within the past 4 weeks, or are planning to participate in other clinical trials.
(20) Participants judged ineligible by the principal investigator.

Target sample size

112


Research contact person

Name of lead principal investigator

1st name Soma
Middle name
Last name Ode

Organization

Macromill Carenet, Inc.

Division name

Clinical Research Solution Division

Zip code

108-0075

Address

Shinagawa East One Tower 11F, 2-16-1 Konan, Minato-ku, Tokyo, Japan

TEL

03-6716-7108

Email

umin_info@macromillcarenet.jp


Public contact

Name of contact person

1st name Yumi
Middle name
Last name Kimoto

Organization

Macromill Carenet, Inc.

Division name

Clinical Research Solution Division

Zip code

108-0075

Address

Shinagawa East One Tower 11F, 2-16-1 Konan, Minato-ku, Tokyo, Japan

TEL

03-6716-7108

Homepage URL


Email

umin_info@macromillcarenet.jp


Sponsor or person

Institute

Macromill Carenet, Inc.

Institute

Department

Personal name



Funding Source

Organization

ICHIBIKI 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

Institutional Review Board (IRB) of Tokyo Haneda Watanabe Clinic

Address

1-6-15 Haneda, Ota-ku, Tokyo, Japan

Tel

03-3741-0223

Email

wnb.cto@gmail.com


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

医療法人社団 糺榮会 東京羽田渡辺クリニック


Other administrative information

Date of disclosure of the study information

2026 Year 09 Month 09 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 09 Month 09 Day

Date of IRB

2026 Year 09 Month 09 Day

Anticipated trial start date

2026 Year 10 Month 23 Day

Last follow-up date

2027 Year 03 Month 31 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 09 Month 09 Day

Last modified on

2026 Year 09 Month 09 Day



Link to view the page

Value
https://center6.umin.ac.jp/cgi-open-bin/ctr_e/ctr_view.cgi?recptno=R000071693