AddictionNCT07663474
Mobile Restriction on Dopamine Transporter
A study testing Mobile phone restrction in people with Addiction and SMARTPHONE OWNER, run by Pusan National University Hospital at 1 site in South Korea.
Trial 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. Read more about this study
- Who is it for?
- Ages 19 to 40 yearsHealthy volunteers can take part
- Conditions the study is for
- Addiction, SMARTPHONE OWNER
- What is being tested?
- Mobile phone restrction
- Type of treatment
- Medical device
- Could I receive a placebo?
- No, everyone receives an active treatment
- How many people
- 30 participants
- Where
- 1 siteSouth Korea
- Study dates
- 1 May 2026to 31 Dec 2030
- Phase
- Interventional
- Are there results?
- Not yet: the study is under way
Key requirements
Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.
- Ages 19 to 40 years
- All sexes
- Healthy volunteers accepted
- Adult
Who may be able to join
- Healthy subjects with daily use of mobile phone (IPhone)
- Accessible with "Screentime" application
Who cannot join
- Neuropsychiatric disease
- Subjects who have medications for mental illness
- Subjects who cannot undergo PET scans
- Subjects who cannot participate 4 weeks of this study
Trial locations and contacts
1 site in 1 country. Contact the study team or a site near you to ask about taking part.
South Korea1 site, 1 recruiting
- Recruiting
Pusan National University Hospital
Busan, Busan, 49241
Kyoungjune Pak, MD, PhD, +82-51-240-7389, ilikechopin@pusan.ac.kr
About this study
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.
- Conditions
- Addiction, SMARTPHONE OWNER
- Being tested
- Mobile phone restrction
- Medical subject headings
- Behavior, Addictive
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
Mobile phone restrctionDevice
Mobile phone restrction for 2 weeks
| Study group | Role | What they receive |
|---|---|---|
| free use for 2weeks + Mobile restriction for 2weeks | Experimental | Not described Receives: Device: Mobile phone restrction |
What is being measured
The primary outcome is the main question the study is designed to answer.
Dopamine transporter
PET
Measured: 2weeks after intervention
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted23 Jun 2026
- Study start1 May 2026
- Primary completion31 Dec 2029 (estimated)
- Study completion31 Dec 2030 (estimated)
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Other trials for AddictionStudies of the same condition, open and under way.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
More details
For doctors and researchers: how the study is designed, who runs it, and its registry IDs.
Study design
- Study type
- Interventional
- Phase
- Phase N/A
- Primary purpose
- Basic science
- Allocation
- Not applicable
- Intervention model
- Single group
- Masking
- None (open label)
- Enrolment
- 30 participants (estimated)
Sponsor and investigators
- Lead sponsor
- Pusan National University Hospital
- Sponsor type
- University, hospital or other
- Responsible party
- Principal investigator, Kyoungjune Pak, Pusan National University Hospital
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT07663474
- Sponsor's protocol ID
- 20260113
- Status last verified
- Jun 2026
- First submitted
- 16 Jun 2026
- Last updated
- 25 Jun 2026
- Results posted
- No
- Data monitoring committee
- No
- FDA-regulated drug
- No
- FDA-regulated device
- No
- Individual data sharing
- No
Study at a glance
From the registry record, last updated by the sponsor on 25 Jun 2026. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Mobile Restriction on Dopamine Transporter
- ClinicalTrials.gov ID
- NCT07663474
- Acronym / sponsor ID
- 20260113
- Conditions
- Addiction, SMARTPHONE OWNER
- Study type
- Interventional
- Recruitment status
- Recruiting
- Enrolment
- 30 participants (estimated)
- Lead sponsor
- Pusan National University HospitalUniversity, hospital or other
- Study start
- 1 May 2026 (actual)
- Primary completion
- 31 Dec 2029 (estimated)
- Study completion
- 31 Dec 2030 (estimated)
- First posted
- 23 Jun 2026 (actual)
- Results
- Not posted in the source record
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
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.
Study design
- Primary purpose
- Basic science
- Allocation
- Not applicable
- Intervention model
- Single group
- Masking
- None (open label)
- Number of arms
- 1
| Arm | Type | Receives |
|---|---|---|
| free use for 2weeks + Mobile restriction for 2weeks | Experimental | Device: Mobile phone restrction |
Who may qualify
- Ages
- 19 to 40 years
- Sex
- All
- Healthy volunteers
- Accepted
- Age groups
- Adult
Key inclusion criteria (2 listed)
- Healthy subjects with daily use of mobile phone (IPhone)
- Accessible with "Screentime" application
Key exclusion criteria (4 listed)
- Neuropsychiatric disease
- Subjects who have medications for mental illness
- Subjects who cannot undergo PET scans
- Subjects who cannot participate 4 weeks of this study
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Interventions
| Intervention | Type | Arms |
|---|---|---|
| Mobile phone restrctionMobile phone restrction for 2 weeks | Device | free use for 2weeks + Mobile restriction for 2weeks |
Primary outcome
Dopamine transporter
Time frame: 2weeks after intervention
PET
Results and safety
This study is still under way. Results are not available in the source record yet.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 25 Jun 2026.
- Individual participant dataSharing planned: No
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Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part.
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
A study testing Mobile phone restrction in people with Addiction and SMARTPHONE OWNER, run by Pusan National University Hospital at 1 site in South Korea.
The full registered description is in the About this study section and the official record.
Who may be eligible to take part?
The sponsor lists 2 inclusion and 4 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.
Is this clinical trial currently recruiting?
The record says: looking for participants now, as of the sponsor's last update on 25 Jun 2026. Status can change between updates, so confirm with the study contact before making plans.
Where is the study taking place?
The record lists 1 site in South Korea. Whether a site is taking part right now should be confirmed with that site. See every site.
What are the possible benefits and risks?
They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.
Are results available for this study?
This study is still under way. Results are not available in the source record yet.
How can a doctor refer a patient or contact the research team?
Contact Kyoungjune Pak, MD, PhD (+82-51-240-7389, ilikechopin@pusan.ac.kr), or a site near the patient. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
Dopamine transporter (time frame: 2weeks after intervention). It is what the study was designed to measure, not a finding.
Where can I read the original study information?
Does a listing mean the treatment is approved or proven to work?
No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.
How often is this information updated?
AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 25 Jun 2026.