Mobile Restriction on Dopamine Transporter | NCT07663474

Studies
Mobile Restriction on Dopamine Transporter

NCT07663474

Sponsor

Pusan National University Hospital

Status

Recruiting

Last Update Posted

Jun 25, 2026Actual

Enrollment

30Estimated

Phase

Not Applicable

Conditions

Addiction
SMARTPHONE OWNER

Interventions

Mobile phone restrction

Countries

South Korea

Protocol Section

Identification Module Status Module Sponsor/Collaborators Module Oversight Module Description Module Conditions Module Design Module Arms/Interventions Module Outcomes Module Eligibility Module Contacts/Locations Module References Module IPD Sharing Statement Module

Results Section

Participant Flow Module Baseline Characteristics Module Outcome Measures Module Adverse Events Module More Info Module

Annotation Section

Annotation Module

Document Section

Large Document Module

Derived Section

Miscellaneous Info Module Condition Browse Module Intervention Browse Module

Protocol Section

Identification Module

NCT ID

Results Section

No data available

No data is available for this block.

Annotation Section

No data available

No data is available for this block.

Document Section

No data available

No data is available for this block.

Derived Section

Miscellaneous Info Module

Version Holder

Status Module

Record Verification Date

Jun 2026

Overall Recruitment Status or Expanded Access Status

Recruiting

Last Known Status

Not provided

Delayed Posting

Not provided

Why Stopped

Not provided

Expanded Access Info

Start Date

May 1, 2026Actual

Primary Completion Date

Dec 31, 2029Estimated

Completion Date

Dec 31, 2030Estimated

First Submitted Date

Jun 16, 2026

First Submission Date that Met QC Criteria

Jun 16, 2026

First Posted Date

Jun 23, 2026Actual

Results Waived

Not provided

Results First Submitted Date

Not provided

Results First Submitted that Met QC Criteria

Not provided

Results First Posted Date

Not provided

Certification/Extension (aka Delayed Results) First Submitted Date

Not provided

Certification/Extension First Submitted that Passed QC Review

Not provided

Certification/Extension First Posted Date

Not provided

Last Update Submitted Date

Jun 22, 2026

Last Update Posted Date

Jun 25, 2026Actual

Sponsor/Collaborators Module

Responsible Party, by Official Title

Kyoungjune Pak, Associate professor, Pusan National University HospitalPrincipal Investigator

Lead Sponsor

Pusan National University HospitalOTHER

Collaborators

Not provided

Oversight Module

Has Data Monitoring Committee (DMC)

Is FDA Regulated Drug

Is FDA Regulated Device

Is Unapproved Device

Not provided

Pediatric Postmarket Surveillance of a Device Product

Not provided

Product Exported from US

Not provided

FDAAA801 Violation

Not provided

Description Module

Brief Summary

Restriction of mobile phone use for 2wks and undergo PET scanning for DAT bindinng. Free use of mobile phone use for 2wks and undergo PET scanning for DAT bindinng.

Detailed Description

Not provided

Design Module

Study Type

Interventional

Number of References to an Expanded Access Study

Not provided

Expanded Access Types

Not provided

Patient Registry

Not provided

Target Follow-Up Duration

Not provided

Phases

Not Applicable

Interventional Study Design

Allocation

Biospecimen

No data available

No data is available for this block.

Enrollment

30Estimated

Arms/Interventions Module

Arm Groups

Label	Type	Description	Intervention Names
free use for 2weeks + Mobile restriction for 2weeks	Experimental		Device: Mobile phone restrction

Interventions

Name	Type	Description	Arm Group Labels	Other Names
Mobile phone restrction	Device	Mobile phone restrction for 2 weeks	free use for 2weeks + Mobile restriction for 2weeks

Outcomes Module

Primary Outcomes

Measure	Description	Time Frame
Dopamine transporter	PET	2weeks after intervention

Secondary Outcomes

Not provided

Other Outcomes

Not provided

Eligibility Module

Eligibility Criteria

Inclusion Criteria:

Healthy subjects with daily use of mobile phone (IPhone)
Accessible with "Screentime" application

Exclusion Criteria:

Neuropsychiatric disease
Subjects who have medications for mental illness
Subjects who cannot undergo PET scans
Subjects who cannot participate 4 weeks of this study

Accepts Healthy Volunteers

Yes

Sex

All

Sex/Gender Based

Yes

Sex/Gender Description

Not provided

Minimum Age

19 Years

Maximum Age

40 Years

Standard Ages

Adult

Study Population

Not provided

Sampling Method

Not provided

Contacts/Locations Module

Central Contacts

Name	Role	Phone	Extension	Email
Kyoungjune Pak, MD, PhD	Contact	+82-51-240-7389		ilikechopin@pusan.ac.kr

Overall Officials

Not provided

Locations

Facility	Status	City	State	ZIP	Country	Contacts
Pusan National University Hospital	Recruiting	Busan	Busan	49241	South Korea

IPD Sharing Statement Module

Plan to Share IPD

Description

Not provided

Types

Not provided

Time Frame

Not provided

Access Criteria

Not provided

URL

Not provided

Condition Browse Module

MeSH Terms

ID	Term
D016739	Behavior, Addictive

Ancestor Terms

ID	Term
D003192	Compulsive Behavior
D007175	Impulsive Behavior
D001519	Behavior

Browse Leaves

Not provided

Browse Branches

Not provided