UMIN-CTR Clinical Trial

Unique ID issued by UMIN UMIN000057676
Receipt number R000065888
Scientific Title The observational study of gut or oral MIcrobiota during chemotherapY plus nivolumab And interaction of concomiTAnt mediCations for advanced gasTric cancer
Date of disclosure of the study information 2025/04/22
Last modified on 2025/04/22 10:45:36

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Basic information

Public title

The observational study of gut or oral MIcrobiota during chemotherapY plus nivolumab And interaction of concomiTAnt mediCations for advanced gasTric cancer

Acronym

MIYATACT study

Scientific Title

The observational study of gut or oral MIcrobiota during chemotherapY plus nivolumab And interaction of concomiTAnt mediCations for advanced gasTric cancer

Scientific Title:Acronym

MIYATACT study

Region

Japan


Condition

Condition

Gastric cancer

Classification by specialty

Gastroenterology

Classification by malignancy

Malignancy

Genomic information

YES


Objectives

Narrative objectives1

To clarify the treatment outcomes of nivolumab combined chemotherapy for unresectable/advanced gastric cancer in daily clinical practice. To exploratory study the effects of oral and intestinal flora and combined drugs including probiotics on the treatment outcomes of nivolumab combined chemotherapy.

Basic objectives2

Safety,Efficacy

Basic objectives -Others


Trial characteristics_1


Trial characteristics_2


Developmental phase



Assessment

Primary outcomes

Overall survival

Key secondary outcomes



Base

Study type

Observational


Study design

Basic design


Randomization


Randomization unit


Blinding


Control


Stratification


Dynamic allocation


Institution consideration


Blocking


Concealment



Intervention

No. of arms


Purpose of intervention


Type of intervention


Interventions/Control_1


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

Prospective cohort:
Confirmed by pathological examination to have primary adenocarcinoma of the stomach or gastroesophageal junction.
Diagnosed with unresectable or advanced recurrent gastric cancer.
Scheduled to receive triple therapy of nivolumab, S1 or capecitabine or fluorouracil, and oxaliplatin between the
date of implementation approval and June 30, 2026.
Patients for which no prior treatment for unresectable advanced or recurrent gastric cancer has been performed. However, cases that underwent perioperative chemotherapy may be enrolled if recurrence is confirmed 6 months or more after the end of perioperative chemotherapy.
Stool or saliva can be collected.

Retrospective cohort:
Patients who underwent nivolumab combination chemotherapy after November 2021, and who have already started nivolumab combination chemotherapy at the time of enrollment. Patients who have been treated with a triple combination of nivolumab, S1 or capecitabine or fluorouracil, and oxaliplatin, but have discontinued one or two drugs due to adverse events, etc. are also eligible. Both ongoing and completed cases can be enrolled. Patients who have been treated with systemic chemotherapy with fluoropyrimidine drugs and oxaliplatin first and then with nivolumab from the second course are also eligible.
Diagnosed with unresectable or advanced recurrent gastric cancer.
ECOG PS 0 to 2
Patients have not undergone prior treatment for unresectable advanced or recurrent gastric cancer before nivolumab combination chemotherapy. However, patients who have undergone perioperative chemotherapy can be enrolled if recurrence is observed 6 months or more after the end of perioperative chemotherapy.
The subject is given the opportunity to refuse study participation through the publication of an optout notice, etc., and does not express an intention to refuse.

Key exclusion criteria

Prospective cohort:
HER2 positive cases
Active multiple cancers.
Fluid retention requiring drainage within 2 weeks prior to enrollment.
Pulmonary fibrosis or interstitial pneumonia.
Severe complications.
Active infections.
Active viral hepatitis.
Poorly controlled diabetes.
Clinically significant psychiatric or central nervous system disorders.
Severe electrocardiogram abnormalities or clinically significant cardiac disease.
Clinically suspected brain or cerebrospinal membrane metastases.
Pregnant or lactating women, or men or women who do not use appropriate contraception.
Nivolumab administration is contraindicated.
Require continuous oral administration of steroids at a dose of 10mg per day or more in prednisolone equivalent.
The attending physician judged to be inappropriate for participation in this study.

Retrospective cohort:
HER2 positive cases
Patients had undergone two or more courses of systemic chemotherapy with fluoropyrimidine drugs and oxaliplatin for unresectable advanced or recurrent gastric cancer.
Active secondary cancers.
Body cavity fluid collection requiring drainage within 2 weeks.
Pulmonary fibrosis or interstitial pneumonia.
Serious complications.
Active infections.
Active viral hepatitis.
Poorly controlled diabetes mellitus.
Clinically significant psychiatric disorders or central nervous system disorders.
Severe electrocardiogram abnormalities or clinically significant cardiac diseases.
Clinically suspected brain metastasis or cerebrospinal membrane metastasis.
Require continuous oral administration of steroids at a dose of 10 mg per day or more in prednisolone equivalent.
The attending physician judges to be inappropriate to participate in this study.

Target sample size

210


Research contact person

Name of lead principal investigator

1st name Yoshito
Middle name
Last name Komatsu

Organization

Hokkaido University Hospital

Division name

Divison of Cancer Center

Zip code

060-8648

Address

Kita14, Nishi5, Kita-ku, Sapporo, Hokkaido

TEL

0117161161

Email

ykomatsu@med.hokudai.ac.jp


Public contact

Name of contact person

1st name Kazuaki
Middle name
Last name Harada

Organization

Hokkaido university hospital

Division name

Divison of Cancer Center

Zip code

060-8648

Address

Kita14, Nishi5, Kita-ku, Sapporo, Hokkaido

TEL

0117161161

Homepage URL


Email

haraharaccho0605@yahoo.co.jp


Sponsor or person

Institute

Hokkaido Gastrointestinal Cancer Study Group

Institute

Department

Personal name



Funding Source

Organization

Hokkaido Gastrointestinal Cancer Study Group

Organization

Division

Category of Funding Organization

Self funding

Nationality of Funding Organization



Other related organizations

Co-sponsor


Name of secondary funder(s)



IRB Contact (For public release)

Organization

Ethical Review Board for Life Science and Medical Research, Hokkaido University Hospital

Address

Kita14, Nishi5, Kita-ku, Sapporo, Hokkaido

Tel

011-706-7636

Email

Crjimu@huhp.hokudai.ac.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

北海道大学病院(北海道)、富山大学附属病院(富山県)、釧路労災病院(北海道)、
市立函館病院(北海道)、市立札幌病院(北海道)、 KKR札幌医療センター(北海道)、国立病院機構北海道医療センター(北海道)、市立稚内病院(北海道)、NTT東日本札幌病院(北海道)、岩見沢市立総合病院(北海道)、苫小牧市立病院(北海道)、北見赤十字病院(北海道)、北海道消化器科病院(北海道)、長崎大学病院(長崎県)


Other administrative information

Date of disclosure of the study information

2025 Year 04 Month 22 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

Open public recruiting

Date of protocol fixation

2024 Year 12 Month 11 Day

Date of IRB

2024 Year 12 Month 11 Day

Anticipated trial start date

2024 Year 12 Month 11 Day

Last follow-up date

2028 Year 12 Month 31 Day

Date of closure to data entry


Date trial data considered complete


Date analysis concluded



Other

Other related information

To clarify the treatment outcomes of nivolumab combined chemotherapy in patients with advanced gastric cancer in daily clinical practice, and to explore the effects of oral and intestinal bacterial flora and combined drugs on treatment outcomes


Management information

Registered date

2025 Year 04 Month 22 Day

Last modified on

2025 Year 04 Month 22 Day



Link to view the page

Value
https://center6.umin.ac.jp/cgi-open-bin/ctr_e/ctr_view.cgi?recptno=R000065888