UMIN-CTR Clinical Trial

Unique ID issued by UMIN UMIN000061258
Receipt number R000069608
Scientific Title A multicenter prospective observational study exploring soluble factors in pleural effusion that can predict the therapeutic efficacy of immune checkpoint inhibitors in pleural mesothelioma
Date of disclosure of the study information 2026/04/14
Last modified on 2026/04/14 16:09:51

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Basic information

Public title

Exploratory study of predictive biomarkers for treatment response using pleural effusion in pleural mesothelioma

Acronym

Pleural mesothelioma study

Scientific Title

A multicenter prospective observational study exploring soluble factors in pleural effusion that can predict the therapeutic efficacy of immune checkpoint inhibitors in pleural mesothelioma

Scientific Title:Acronym

Pleural effusion study in pleural mesothelioma

Region

Japan


Condition

Condition

Pleural mesothelioma and other diseases associated with pleural effusion

Classification by specialty

Pneumology Hematology and clinical oncology Chest surgery

Classification by malignancy

Malignancy

Genomic information

NO


Objectives

Narrative objectives1

To identify soluble biomarkers in pleural effusion from patients with pleural mesothelioma that predict response to immune checkpoint inhibitors.

Basic objectives2

Others

Basic objectives -Others

Identification of predictive biomarkers for therapeutic response to the drug

Trial characteristics_1

Exploratory

Trial characteristics_2


Developmental phase

Not applicable


Assessment

Primary outcomes

Association between soluble factor levels in pleural effusion and response to immune checkpoint inhibitors in pleural mesothelioma

Key secondary outcomes

Exploration of predictive biomarkers for immune checkpoint inhibitor-induced immune-related adverse events in pleural effusion from pleural mesothelioma.


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

18 years-old <=

Age-upper limit


Not applicable

Gender

Male and Female

Key inclusion criteria

1. Patients histologically diagnosed with pleural mesothelioma or patients suspected of having pleural mesothelioma based on imaging findings.
2. Patients with pleural effusion who are scheduled to undergo pleural effusion sampling.
3. Patients aged 18 years or older who provide written informed consent, or whose legally authorized representative provides written informed consent.
4. Patients who, at the time of registration, are considered eligible for immune checkpoint inhibitor therapy if pleural mesothelioma is confirmed by pathological diagnosis.

Key exclusion criteria

1. Patients who are judged to be ineligible for immune checkpoint inhibitor therapy at the time of screening.
2. Patients with acute empyema or pneumothorax (patients with iatrogenic pneumothorax associated with thoracentesis may be enrolled).
3. Patients who are judged by the principal investigator or sub-investigators to be inappropriate for participation in this study.

Target sample size

150


Research contact person

Name of lead principal investigator

1st name Riki
Middle name
Last name Okita

Organization

NHO Yamaguchi Ube Medical Center

Division name

Clinical Research

Zip code

755-0241

Address

Higashikiwa 685, Ube, Yamaguchi

TEL

0836582300

Email

riki0716okita@yahoo.co.jp


Public contact

Name of contact person

1st name Riki
Middle name
Last name Okita

Organization

NHO Yamaguchi Ube Medical Center

Division name

Clinical Research

Zip code

755-0241

Address

Higashikiwa 685, Ube, Yamaguchi

TEL

0836582300

Homepage URL


Email

riki0716okita@yahoo.co.jp


Sponsor or person

Institute

NHO Yamaguchi Ube Medical Center

Institute

Department

Personal name



Funding Source

Organization

Collaborative Clinical Research within the National Hospital Organization (NHO)

Organization

Division

Category of Funding Organization

Government offices of other countries

Nationality of Funding Organization

Japan


Other related organizations

Co-sponsor


Name of secondary funder(s)



IRB Contact (For public release)

Organization

National Hospital Organization Headquarters

Address

2-5-21 Higashigaoka, Meguro-ku, Tokyo

Tel

03-5712-5075

Email

700-kenkyu@mail.hosp.go.jp


Secondary IDs

Secondary IDs

YES

Study ID_1

R7-EBM(Respiratory cancer)-02

Org. issuing International ID_1

Collaborative Clinical Research within the National Hospital Organization (NHO)

Study ID_2


Org. issuing International ID_2


IND to MHLW



Institutions

Institutions

国立病院機構山口宇部医療センター、他


Other administrative information

Date of disclosure of the study information

2026 Year 04 Month 14 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 01 Month 19 Day

Date of IRB


Anticipated trial start date

2026 Year 06 Month 01 Day

Last follow-up date

2030 Year 10 Month 31 Day

Date of closure to data entry


Date trial data considered complete


Date analysis concluded



Other

Other related information

Soluble factors in pleural effusion


Management information

Registered date

2026 Year 04 Month 14 Day

Last modified on

2026 Year 04 Month 14 Day



Link to view the page

Value
https://center6.umin.ac.jp/cgi-open-bin/ctr_e/ctr_view.cgi?recptno=R000069608