UMIN-CTR Clinical Trial

Unique ID issued by UMIN UMIN000059428
Receipt number R000067810
Scientific Title One-Year Follow-Up Prognosis Study in Adults with Generalized Anxiety Disorder
Date of disclosure of the study information 2025/10/23
Last modified on 2025/10/16 09:56:29

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Basic information

Public title

One-Year Follow-Up Study on the Prognosis of Adult Patients with Generalized Anxiety Disorder

Acronym

GAD-FU

Scientific Title

One-Year Follow-Up Prognosis Study in Adults with Generalized Anxiety Disorder

Scientific Title:Acronym

GAD-1YFU Study

Region

Japan


Condition

Condition

Generalized Anxiety Disorder

Classification by specialty

Psychiatry

Classification by malignancy

Others

Genomic information

NO


Objectives

Narrative objectives1

Patients who participated in the randomized controlled trial "Online Cognitive Behavioral Therapy in Addition to Treatment-as-Usual versus Treatment-as-Usual Alone for Adult Patients with Generalized Anxiety Disorder (G2023010)" will be followed up within the scope of routine clinical practice, and changes in clinical data will be observed. Since the natural course of one-year changes following online cognitive behavioral therapy for generalized anxiety disorder has not yet been clarified, it is of clinical significance to conduct follow-up and observational assessments.

Basic objectives2

Efficacy

Basic objectives -Others


Trial characteristics_1


Trial characteristics_2


Developmental phase



Assessment

Primary outcomes

Assessment of anxiety using the Hamilton Anxiety Rating Scale (HAM-A)

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

65 years-old >

Gender

Male and Female

Key inclusion criteria

Patients who meet all of the following criteria will be included:
The primary diagnosis meets the diagnostic criteria for generalized anxiety disorder (DSM-5).
Age between 18 and 65 years at the time of obtaining informed consent.
Written informed consent is obtained voluntarily from the patient after receiving a sufficient explanation of the study and demonstrating adequate understanding.
Usual treatment (regular consultations with a primary physician are mandatory, and the presence or absence of pharmacotherapy for generalized anxiety disorder at the time of entry is not restricted) is being provided, and no new initiation or additional changes in pharmacotherapy for generalized anxiety disorder are planned during the study period.
Pharmacotherapy for generalized anxiety disorder refers to psychotropic medications such as antidepressants, anxiolytics, or hypnotics, regardless of indication.
The patient is able to understand cognitive behavioral therapy and is in a mental and physical condition that allows for continuous practice for at least 16 weeks.

Key exclusion criteria

The following individuals will be excluded:
Those with comorbid schizophrenia spectrum and other psychotic disorders, bipolar and related disorders, substance-related and addictive disorders, neurocognitive disorders, or neurodevelopmental disorders.
Those at imminent risk of suicide.
Those with serious physical illnesses such as cancer, heart disease, or stroke.
Those with intellectual disability (estimated IQ < 80 based on the JART-25: Japanese Adult Reading Test-25 or similar measures).
Those who have received cognitive behavioral therapy within the past six months.
Any other individuals deemed unsuitable for safe participation in this study by the principal investigator or study therapists.

Target sample size

24


Research contact person

Name of lead principal investigator

1st name Eiji
Middle name
Last name Shimizu

Organization

Chiba University

Division name

Cognitive Behavioral Physiology

Zip code

2608677

Address

1-8-1 Inohana, Chuo-ku, Chiba-shi, Chiba

TEL

0432262027

Email

eiji@faculty.chiba-u.jp


Public contact

Name of contact person

1st name Itsuko
Middle name
Last name Yoshida

Organization

Chiba University

Division name

Cognitive Behavioral Physiology

Zip code

2608677

Address

1-8-1 Inohana, Chuo-ku, Chiba-shi, Chiba

TEL

0432262027

Homepage URL


Email

tokiko.yoshida@chiba-u.jp


Sponsor or person

Institute

Chiba University

Institute

Department

Personal name



Funding Source

Organization

JSPS KAKENHI

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

Chiba University

Address

1-8-1 Inohana, Chuo-ku, Chiba-shi, Chiba

Tel

0432227171

Email

trad-project@chiba-u.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

2025 Year 10 Month 23 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

24

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

No longer recruiting

Date of protocol fixation

2025 Year 07 Month 28 Day

Date of IRB

2025 Year 07 Month 28 Day

Anticipated trial start date

2025 Year 07 Month 28 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

Observations using assessment scales commonly employed in routine clinical practice, as well as patient satisfaction and reflection sheets, will be conducted at 1 month, 3 months, 6 months, and 1 year after the completion of the randomized controlled trial of online cognitive behavioral therapy in addition to treatment-as-usual versus treatment-as-usual alone for adult patients with generalized anxiety disorder.


Management information

Registered date

2025 Year 10 Month 16 Day

Last modified on

2025 Year 10 Month 16 Day



Link to view the page

Value
https://center6.umin.ac.jp/cgi-open-bin/ctr_e/ctr_view.cgi?recptno=R000067810