UMIN-ICDS Clinical Trial

Unique ID issued by UMIN UMIN000061580
Receipt number R000070451
Scientific Title A Qualitative Study of Information-Seeking and Decision-Making Regarding Gender-Affirming Hormone Therapy among Individuals with Gender Dysphoria or Gender Incongruence
Date of disclosure of the study information 2026/07/15
Last modified on 2026/05/14 21:27:56

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Basic information

Public title

A Qualitative Study of Information-Seeking and Decision-Making Regarding Gender-Affirming Hormone Therapy among Individuals with Gender Dysphoria or Gender Incongruence

Acronym

INSIGHT Study

Scientific Title

A Qualitative Study of Information-Seeking and Decision-Making Regarding Gender-Affirming Hormone Therapy among Individuals with Gender Dysphoria or Gender Incongruence

Scientific Title:Acronym

INSIGHT Study

Region

Japan


Condition

Condition

Gender Incongruence

Classification by specialty

Urology

Classification by malignancy

Others

Genomic information

NO


Objectives

Narrative objectives1

The purpose of this study is to clarify how individuals with gender dysphoria or gender incongruence who have considered or experienced hormone therapy seek and refer to information about hormone therapy, and how they position healthcare professionals, family, friends, and online information in their decision-making regarding the initiation, continuation, discontinuation, and revision of treatment methods. The results will serve as foundational data for considering how to support individuals in safely and confidently accessing information and making decisions in consultation with healthcare professionals.

Basic objectives2

Others

Basic objectives -Others

Qualitative study

Trial characteristics_1


Trial characteristics_2


Developmental phase



Assessment

Primary outcomes

Qualitative characteristics of information referencing and decision-making processes regarding hormone therapy.

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

18 years-old <=

Age-upper limit


Not applicable

Gender

Male and Female

Key inclusion criteria

Individuals who recognize themselves as having gender dysphoria, gender incongruence, or a related experience. Individuals who are considering, about to start, have started, are currently undergoing, have discontinued, or have previously undergone hormone therapy.

Key exclusion criteria

Individuals who, according to the principal investigator or co-investigator, would experience significant psychological distress as a result of participating in the study.
Individuals who are unable to participate in the study due to severe mental or physical symptoms.

Target sample size

20


Research contact person

Name of lead principal investigator

1st name Kazuna
Middle name
Last name Matsuo

Organization

Graduate school of Medicine, Nagoya University

Division name

Department of Urology

Zip code

466-8550

Address

65, Tsurumai-cho, Showa-ku, Nagoya city, Aichi Prefecture, Japan

TEL

+82-52-744-2985

Email

matsuo.kazuna.i7@f.mail.nagoya-u.ac.jp


Public contact

Name of contact person

1st name Kazuna
Middle name
Last name Matsuo

Organization

Graduate school of Medicine, Nagoya University

Division name

Department of Urology

Zip code

466-8550

Address

65, Tsurumai-cho, Showa-ku, Nagoya city, Aichi prefecture, Japan

TEL

+81-744-2985

Homepage URL


Email

matsuo.kazuna.i7@f.mail.nagoya-u.ac.jp


Sponsor or person

Institute

Department of Urology, Graduate school of Medicine, Nagoya University

Institute

Department

Personal name



Funding Source

Organization

Japan Society for the Promotion of Science

Organization

Division

Category of Funding Organization

Japanese Governmental office

Nationality of Funding Organization



Other related organizations

Co-sponsor


Name of secondary funder(s)



IRB Contact (For public release)

Organization

Nagoya University Hospital Institutional Review Board

Address

65, Tsurumai-cho, Showa-ku, Nagoya city, Aichi prefecture, Japan

Tel

+81-52-744-2479

Email

ethics@med.nagoya-u.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



Other administrative information

Date of disclosure of the study information

2026 Year 07 Month 15 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 05 Month 14 Day

Date of IRB


Anticipated trial start date

2026 Year 07 Month 15 Day

Last follow-up date

2028 Year 03 Month 31 Day

Date of closure to data entry


Date trial data considered complete


Date analysis concluded



Other

Other related information

This study is a qualitative research project targeting individuals undergoing hormone therapy due to gender dysphoria. Interviews will be conducted to examine the factors influencing decision-making regarding the initiation and modification of hormone therapy.


Management information

Registered date

2026 Year 05 Month 14 Day

Last modified on

2026 Year 05 Month 14 Day



Link to view the page

Value
https://center6.umin.ac.jp/cgi-open-bin/ctr_e/ctr_view.cgi?recptno=R000070451