UMIN-ICDS Clinical Trial

Unique ID issued by UMIN UMIN000060293
Receipt number R000068971
Scientific Title Health and Productivity Management program " #Watashi no kinkatsu" : Verification of effects on the gut environment and subjective health by mushroom consumption among employees
Date of disclosure of the study information 2026/01/08
Last modified on 2026/01/08 11:13:16

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Basic information

Public title

Health and Productivity Management program " #Watashi no kinkatsu" : Verification of effects on the gut environment and subjective health by mushroom consumption among employees

Acronym

Health and Productivity Management program " #Watashi no kinkatsu" : Verification of effects on the gut environment and subjective health by mushroom consumption among employees

Scientific Title

Health and Productivity Management program " #Watashi no kinkatsu" : Verification of effects on the gut environment and subjective health by mushroom consumption among employees

Scientific Title:Acronym

Health and Productivity Management program " #Watashi no kinkatsu" : Verification of effects on the gut environment and subjective health by mushroom consumption among employees

Region

Japan


Condition

Condition

Healthy male/female adults

Classification by specialty

Adult

Classification by malignancy

Others

Genomic information

NO


Objectives

Narrative objectives1

As part of our health and productivity management, we will provide employees with opportunities to consume mushrooms and examine the effects of mushroom consumption on fecal short-chain fatty acid levels and various health-related indicators.

Basic objectives2

Efficacy

Basic objectives -Others


Trial characteristics_1


Trial characteristics_2


Developmental phase



Assessment

Primary outcomes

Fecal metabolites (short-chain fatty acids and organic acids)

Key secondary outcomes

1Defecation status (the number of days, frequency, property, feeling of incomplete evacuation, abdominal pain)
2Presenteeism
3Subjective health status
4Body weight


Base

Study type

Interventional


Study design

Basic design

Single arm

Randomization

Non-randomized

Randomization unit


Blinding

Open -no one is blinded

Control

Uncontrolled

Stratification


Dynamic allocation


Institution consideration


Blocking


Concealment



Intervention

No. of arms

1

Purpose of intervention

Prevention

Type of intervention

Food

Interventions/Control_1

Ingestion of mushrooms at 40 g per day for 4 weeks.

Interventions/Control_2


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

(1) Male or female employees of HOKUTO Group (HOKUTO Corporation or Hokuto Industry Corporation) who are aged 20 years or older at the time of informed consent.
(2) Subjects who receive explanation about the study, are able to understand the contents, and provide written informed consent by themselves.

Key exclusion criteria

(1) Individuals who have taken medications that may affect the gut environment (e.g., antibiotics, intestinal regulators, laxatives) within 1 month prior to starting intake of the test food, or who cannot restrict such use during the study. Use for hay fever is permitted.
(2) Individuals who are currently participating in another clinical trial of drugs or health foods, within 4 weeks after completing another trial, or who plan to participate in another clinical trial after consenting to this study.
(3) Individuals with excessive alcohol consumption.
(4) Individuals who have undergone surgery within 6 months prior to consent that may affect the study (e.g., colorectal endoscopic surgery, cholecystectomy for gallstones, gastric bypass).
(5) Individuals with a history or current serious disease of the heart, liver, kidneys, or gastrointestinal tract.
(6) Individuals who are pregnant, breastfeeding, or intend to become pregnant during the study period.
(7) Individuals with a mushroom allergy or who cannot tolerate mushrooms.
(8) Individuals judged by the principal investigator to be unsuitable for participation in this study.

Target sample size

50


Research contact person

Name of lead principal investigator

1st name Ken
Middle name
Last name Nishizawa

Organization

HOKUTO Corporation

Division name

Human Resources Department

Zip code

381-8533

Address

138-1 Minamihori, Nagano-shi, Nagano ,381-8533 , Japan

TEL

026-259-5955

Email

jinji@hokto-kinoko.co.jp


Public contact

Name of contact person

1st name Nanako
Middle name
Last name Sugawara

Organization

HOKUTO Corporation

Division name

R & D

Zip code

381-0008

Address

Mushroom Research Laboratory 800-8 Oaza-Shimokomazawa, Nagano-shi, Nagano 381-0008, Japan

TEL

026-296-3211

Homepage URL


Email

nanako.ishiyama@hokto-kinoko.co.jp


Sponsor or person

Institute

HOKUTO Corporation

Institute

Department

Personal name



Funding Source

Organization

HOKUTO Corporation

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 of Chiyoda Paramedical Care Clinic

Address

2F Sanwa-Uchi-Kanda Building, 3-3-5 Uchi-Kanda, Chiyoda-ku, Tokyo 101-0047, Japan

Tel

+81-3-5297-5548

Email

IRB@cpcc.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 01 Month 08 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

2025 Year 12 Month 19 Day

Date of IRB

2025 Year 12 Month 19 Day

Anticipated trial start date

2026 Year 01 Month 30 Day

Last follow-up date

2026 Year 03 Month 14 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 01 Month 08 Day

Last modified on

2026 Year 01 Month 08 Day



Link to view the page

Value
https://center6.umin.ac.jp/cgi-open-bin/icdr_e/ctr_view.cgi?recptno=R000068971