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Nonsuicidal Self-InjuryNCT07641283

Naltrexone for Nonsuicidal Self-Injury

A study testing Naltrexone 50mg (Whanin Naltrexone Tab. 50mg) in people with Nonsuicidal Self-Injury and Self-Injurious Behavior, run by Seoul National University Hospital at 3 sites in South Korea.

Not yet recruiting

Opening soon. The study is approved but enrolment has not started yet. Sites may already take enquiries.

Sites and contacts
Official record
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Trial summary

This randomized, double-blinded, placebo-controlled clinical trial aims to evaluate the efficacy and safety of naltrexone in reducing nonsuicidal self-injurious behavior among individuals with nonsuicidal self-injury. Read more about this study

Who is it for?
Ages 16 years and older
What is being tested?
Naltrexone 50mg (Whanin Naltrexone Tab. 50mg)
Type of treatment
Pill or oral medicine
Could I receive a placebo?
Yes, some participants may receive a placebo
How many people
150 participants
Where
3 sitesSouth Korea
Study dates
Jun 2026to Jun 2028
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 16 years and older
  • All sexes
  • No healthy volunteers
  • Child, Adult, Older adult

Who may be able to join

  • Participants must meet all of the following criteria:
  • Individuals aged 16 years or older.
  • Individuals with clinically significant nonsuicidal self-injurious behavior.
  • Individuals who are able to understand the study procedures and provide written informed consent. For minors, consent from a legal guardian and assent from the participant will be obtained according to applicable regulations.
  • Individuals who are able to comply with study procedures, including clinical visits, medication administration, and study assessments.
  • Women of childbearing potential must have a negative urine pregnancy test at screening and agree to use appropriate contraception during the study period.

Who cannot join

  • Participants meeting any of the following criteria will be excluded:
  • Current serious suicidal ideation or high suicide risk, as determined by the investigator.
  • Current opioid use, opioid dependence, or use of opioid-containing medications.
  • Current use of opioid antagonists or medications that may interact with naltrexone, including methadone or buprenorphine.
  • Use of naltrexone within 1 week before screening.
  • Positive naloxone challenge test or positive urine opioid test, if applicable.
Show all 14Show fewer
  • Known hypersensitivity to naltrexone or any component of the investigational product.
  • Active liver disease, active hepatitis, or clinically significant hepatic impairment.
  • Clinically significant renal impairment.
  • Pregnancy or breastfeeding.
  • Intellectual disability, organic brain disorder, or other condition that may interfere with the participant's ability to understand study procedures or complete assessments.
  • Inability to read or write Korean sufficiently to complete study assessments.
  • Documented prior non-response to naltrexone for nonsuicidal self-injury, as judged by the investigator.
  • Any other clinically significant medical or psychiatric condition that, in the opinion of the investigator, would make participation inappropriate or unsafe.

Trial locations and contacts

3 sites in 1 country. Contact the study team or a site near you to ask about taking part.

Myeong-hyeon Mun, MD, Master's Degree contact

+821085171499

psalms139@hanmail.net

South Korea3 sites
  • Seoul National University Hospital

    Seoul, Jongno-gu, 03080

    Myeong-hyeon Mun, MD, Master's degree, +821085171499, psalms139@hanmail.net

  • Asan medical center

    Seoul, Songpa-gu, 05505

    Yujin Choi, Bachelor's Degree, +821081194386, dbwls14615@naver.com

  • Uijeongbu Eulji Medical Center

    Uijeongbu-si, Gyeonggi-do, 11759

    Minseok Hong, MD, PhD, +821032289060, garam21th@snu.ac.kr

Other trials in South Korea

About this study

Official title: A Randomized, Double-Blinded Clinical Trial to Evaluate the Effectiveness of Naltrexone in Improving Nonsuicidal Self-Injurious Behavior

This randomized, double-blinded, placebo-controlled clinical trial aims to evaluate the efficacy and safety of naltrexone in reducing nonsuicidal self-injurious behavior among individuals with nonsuicidal self-injury. Participants will be randomly assigned to receive either naltrexone plus treatment as usual or placebo plus treatment as usual for 6 weeks.

The primary objective is to determine whether naltrexone reduces the frequency of nonsuicidal self-injurious behavior compared with placebo. Secondary objectives include evaluating changes in clinical severity, suicidal ideation, self-injury-related urges, ecological momentary assessment measures, and safety outcomes.

Read the detailed description

Nonsuicidal self-injury is defined as the intentional destruction of one's own body tissue without suicidal intent. It is clinically important because it is associated with emotional dysregulation, impulsivity, psychiatric comorbidity, and increased risk of future suicidal behavior. However, evidence-based pharmacological treatments specifically targeting nonsuicidal self-injurious behavior remain limited.

Naltrexone is an opioid receptor antagonist that has been suggested to reduce repetitive self-injurious behaviors by modulating endogenous opioid-related reinforcement mechanisms. This study will investigate whether naltrexone is effective in reducing nonsuicidal self-injurious behavior in a randomized, double-blinded, placebo-controlled design.

A total of 150 participants will be enrolled across multiple study sites. Eligible participants will be randomly assigned in a 1:1 ratio to either the naltrexone group or the placebo group. The intervention period will last 6 weeks, with clinical evaluations conducted at baseline and every 2 weeks thereafter. Smartphone-based ecological momentary assessment will also be used to monitor self-injurious urges, mood states, and related behavioral variables during the study period.

Safety will be assessed throughout the study through adverse event monitoring, assessment of suicidal ideation and behavior, laboratory testing, urine testing, and electrocardiography according to the study schedule.

Being tested
Naltrexone 50mg (Whanin Naltrexone Tab. 50mg), Placebo
Keywords
Nonsuicidal self-injury, NSSI, Self-injurious behavior, Naltrexone, Opioid antagonist, Impulsivity, Suicidal ideation, Ecological momentary assessment
Medical subject headings
Self-Injurious Behavior, Impulsive Behavior, Suicidal Ideation

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • Naltrexone 50mg (Whanin Naltrexone Tab. 50mg)Drug

    Pure opioid antagonist administered 50mg once daily.

  • PlaceboDrug

    Matching placebo indistinguishable from the active drug, administered once daily.

Study groups in NCT07641283
Study groupRoleWhat they receive
Naltrexone GroupExperimentalParticipants will receive Naltrexone 50mg orally once daily for 6 weeks, in addition to their current Treatment as Usual (TAU).
Receives: Drug: Naltrexone 50mg (Whanin Naltrexone Tab. 50mg)
Placebo GroupPlacebo comparatorParticipants will receive a matching placebo orally once daily for 6 weeks, in addition to their current Treatment as Usual (TAU).
Receives: Drug: Placebo

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. Total Number of Nonsuicidal Self-Injury Episodes During the 6-Week Treatment Period

    The total number of nonsuicidal self-injury episodes during the 6-week treatment period will be assessed by blinded clinical evaluators. A lower number indicates fewer nonsuicidal self-injury episodes.

    Measured: Baseline to Week 6

Secondary outcomes (17)
  1. Change From Baseline in Modified Obsessive Compulsive Drinking Scale Adapted for Nonsuicidal Self-Injury Urges Total Score

    Self-injurious urges will be assessed using the Modified Obsessive Compulsive Drinking Scale adapted for nonsuicidal self-injury urges. The total score ranges from 0 to 56, with higher scores indicating more severe self-injurious urges.

    Measured: Baseline, Week 2, Week 4, and Week 6

  2. Change From Baseline in Columbia-Suicide Severity Rating Scale Suicidal Ideation Severity Score

    Suicidal ideation will be assessed using the Columbia-Suicide Severity Rating Scale suicidal ideation severity score. The score ranges from 0 to 5, with higher scores indicating more severe suicidal ideation.

    Measured: Baseline, Week 2, Week 4, and Week 6

  3. Change From Baseline in Clinical Global Impressions-Severity Score

    Overall clinical severity will be assessed using the Clinical Global Impressions-Severity scale. The score ranges from 1 to 7, with higher scores indicating greater illness severity.

    Measured: Baseline, Week 2, Week 4, and Week 6

  4. Number of Event-Based Ecological Momentary Assessment Reports of Nonsuicidal Self-Injury Urges

    Participants will complete an event-based smartphone ecological momentary assessment entry when they experience nonsuicidal self-injury urges. The outcome will be reported as the total number of event-based reports of nonsuicidal self-injury urges. A higher number indicates more frequent self-injurious urges.

    Measured: During the 6-week intervention period

  5. Number of Event-Based Ecological Momentary Assessment Reports of Nonsuicidal Self-Injury Behavior

    Participants will complete an event-based smartphone ecological momentary assessment entry when nonsuicidal self-injury behavior occurs. The outcome will be reported as the total number of event-based reports of nonsuicidal self-injury behavior. A higher number indicates more frequent nonsuicidal self-injury behavior.

    Measured: During the 6-week intervention period

  6. Percentage of Planned Investigational Product Doses Taken as Assessed by Pill Count

    Medication adherence will be assessed using pill count. Adherence will be calculated as the number of doses taken divided by the number of planned doses, multiplied by 100. The percentage ranges from 0% to 100%, with higher percentages indicating greater adherence.

    Measured: Week 2, Week 4, and Week 6

  7. Number of Participants With Treatment-Emergent Adverse Events

    Treatment-emergent adverse events will be assessed throughout the study period. The outcome will be reported as the number of participants with one or more treatment-emergent adverse events.

    Measured: Baseline through Week 6

  8. Number of Participants With Clinically Significant Laboratory Abnormalities

    Laboratory safety will be assessed using prespecified blood and urine tests. The outcome will be reported as the number of participants with clinically significant laboratory abnormalities as judged by the investigator.

    Measured: Baseline and Week 6

  9. Number of Participants With Clinically Significant Electrocardiogram Abnormalities

    Electrocardiogram safety will be assessed using standard electrocardiography. The outcome will be reported as the number of participants with clinically significant electrocardiogram abnormalities as judged by the investigator.

    Measured: Baseline and Week 6

  10. Change From Baseline in Montgomery-Åsberg Depression Rating Scale Total Score

    Depressive symptoms will be assessed using the Montgomery-Åsberg Depression Rating Scale. The total score ranges from 0 to 60, with higher scores indicating more severe depressive symptoms.

    Measured: Baseline, Week 2, Week 4, and Week 6

  11. Change From Baseline in Hamilton Rating Scale for Anxiety Total Score

    Anxiety symptoms will be assessed using the Hamilton Rating Scale for Anxiety. The total score ranges from 0 to 56, with higher scores indicating more severe anxiety symptoms.

    Measured: Baseline, Week 2, Week 4, and Week 6

  12. Change From Baseline in Patient Health Questionnaire-9 Total Score

    Self-reported depressive symptoms will be assessed using the Patient Health Questionnaire-9. The total score ranges from 0 to 27, with higher scores indicating more severe depressive symptoms.

    Measured: Baseline, Week 2, Week 4, and Week 6

  13. Change From Baseline in Generalized Anxiety Disorder-7 Total Score

    Self-reported anxiety symptoms will be assessed using the Generalized Anxiety Disorder-7 scale. The total score ranges from 0 to 21, with higher scores indicating more severe anxiety symptoms.

    Measured: Baseline, Week 2, Week 4, and Week 6

  14. Change From Baseline in Eating Disorder Examination-Questionnaire Global Score

    Eating disorder-related psychopathology will be assessed using the Eating Disorder Examination-Questionnaire global score. The global score ranges from 0 to 6, with higher scores indicating greater eating disorder-related psychopathology.

    Measured: Baseline and Week 6

  15. Clinical Global Impressions-Improvement Score

    Overall clinical improvement will be assessed using the Clinical Global Impressions-Improvement scale. The score ranges from 1 to 7, where 1 indicates very much improved and 7 indicates very much worse. Lower scores indicate greater improvement.

    Measured: Week 2, Week 4, and Week 6

  16. Weekly Positive Affect Score as Assessed by the Positive and Negative Affect Schedule

    Positive affect will be assessed weekly using the Positive and Negative Affect Schedule positive affect subscale through smartphone-based ecological momentary assessment. The positive affect subscale score ranges from 10 to 50, with higher scores indicating greater positive affect.

    Measured: Weekly during the 6-week intervention period

  17. Weekly Negative Affect Score as Assessed by the Positive and Negative Affect Schedule

    Negative affect will be assessed weekly using the Positive and Negative Affect Schedule negative affect subscale through smartphone-based ecological momentary assessment. The negative affect subscale score ranges from 10 to 50, with higher scores indicating greater negative affect.

    Measured: Weekly during the 6-week intervention period

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted11 Jun 2026
  2. Study startJun 2026 (estimated)
  3. Primary completionDec 2027 (estimated)
  4. Study completionJun 2028 (estimated)

Resources

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
Treatment
Allocation
Randomised
Intervention model
Parallel groups
Model description
Participants will be randomly assigned in a 1:1 ratio to receive either naltrexone plus treatment as usual or placebo plus treatment as usual.
Masking
Triple blind
Who is masked
Participant, Investigator, Outcomes assessor
Enrolment
150 participants (estimated)
IDs, dates and publications
ClinicalTrials.gov ID
NCT07641283
Sponsor's protocol ID
2024-0057
Status last verified
May 2026
First submitted
19 May 2026
Last updated
11 Jun 2026
Results posted
No
Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No
Individual data sharing
No: Individual participant data will not be publicly shared due to privacy and ethical restrictions. De-identified data may be made available from the corresponding investigator upon reasonable request and with appropriate institutional approval.

Publications

  • Harris PA, Taylor R, Minor BL, Elliott V, Fernandez M, O'Neal L, McLeod L, Delacqua G, Delacqua F, Kirby J, Duda SN; REDCap Consortium. The REDCap consortium: Building an international community of software platform partners. J Biomed Inform. 2019 Jul;95:103208. doi: 10.1016/j.jbi.2019.103208. Epub 2019 May 9.

    PubMed 31078660
  • Bradburn NM, Rips LJ, Shevell SK. Answering autobiographical questions: the impact of memory and inference on surveys. Science. 1987 Apr 10;236(4798):157-61. doi: 10.1126/science.3563494.

    PubMed 3563494
  • Clark DM, Teasdale JD. Diurnal variation in clinical depression and accessibility of memories of positive and negative experiences. J Abnorm Psychol. 1982 Apr;91(2):87-95. doi: 10.1037//0021-843x.91.2.87. No abstract available.

    PubMed 7200102
  • Shiffman S, Stone AA, Hufford MR. Ecological momentary assessment. Annu Rev Clin Psychol. 2008;4:1-32. doi: 10.1146/annurev.clinpsy.3.022806.091415.

    PubMed 18509902
  • Sonne S, Rubey R, Brady K, Malcolm R, Morris T. Naltrexone treatment of self-injurious thoughts and behaviors. J Nerv Ment Dis. 1996 Mar;184(3):192-5. doi: 10.1097/00005053-199603000-00011. No abstract available.

    PubMed 8600226
  • Casner JA, Weinheimer B, Gualtieri CT. Naltrexone and self-injurious behavior: a retrospective population study. J Clin Psychopharmacol. 1996 Oct;16(5):389-94. doi: 10.1097/00004714-199610000-00008.

    PubMed 8889912
  • Buzan RD, Thomas M, Dubovsky SL, Treadway J. The use of opiate antagonists for recurrent self-injurious behavior. J Neuropsychiatry Clin Neurosci. 1995 Fall;7(4):437-44. doi: 10.1176/jnp.7.4.437.

    PubMed 8555746
  • Kars H, Broekema W, Glaudemans-van Gelderen I, Verhoeven WM, van Ree JM. Naltrexone attenuates self-injurious behavior in mentally retarded subjects. Biol Psychiatry. 1990 Apr 1;27(7):741-6. doi: 10.1016/0006-3223(90)90589-t.

    PubMed 2158355
  • McCauley E, Berk MS, Asarnow JR, Adrian M, Cohen J, Korslund K, Avina C, Hughes J, Harned M, Gallop R, Linehan MM. Efficacy of Dialectical Behavior Therapy for Adolescents at High Risk for Suicide: A Randomized Clinical Trial. JAMA Psychiatry. 2018 Aug 1;75(8):777-785. doi: 10.1001/jamapsychiatry.2018.1109.

    PubMed 29926087
  • Mehlum L, Tormoen AJ, Ramberg M, Haga E, Diep LM, Laberg S, Larsson BS, Stanley BH, Miller AL, Sund AM, Groholt B. Dialectical behavior therapy for adolescents with repeated suicidal and self-harming behavior: a randomized trial. J Am Acad Child Adolesc Psychiatry. 2014 Oct;53(10):1082-91. doi: 10.1016/j.jaac.2014.07.003. Epub 2014 Jul 22.

    PubMed 25245352
  • Aboujaoude E, Salame WO. Naltrexone: A Pan-Addiction Treatment? CNS Drugs. 2016 Aug;30(8):719-33. doi: 10.1007/s40263-016-0373-0.

    PubMed 27401883
  • Bresin K, Gordon KH. Endogenous opioids and nonsuicidal self-injury: a mechanism of affect regulation. Neurosci Biobehav Rev. 2013 Mar;37(3):374-83. doi: 10.1016/j.neubiorev.2013.01.020. Epub 2013 Jan 20.

    PubMed 23339875
  • Blasco-Fontecilla H, Fernandez-Fernandez R, Colino L, Fajardo L, Perteguer-Barrio R, de Leon J. The Addictive Model of Self-Harming (Non-suicidal and Suicidal) Behavior. Front Psychiatry. 2016 Feb 1;7:8. doi: 10.3389/fpsyt.2016.00008. eCollection 2016.

    PubMed 26869941
  • Vega D, Sintes A, Fernandez M, Punti J, Soler J, Santamarina P, Soto A, Lara A, Mendez I, Martinez-Gimenez R, Romero S, Pascual JC. Review and update on non-suicidal self-injury: who, how and why? Actas Esp Psiquiatr. 2018 Jul;46(4):146-55. Epub 2018 Jul 1.

    PubMed 30079928

Questions about this trial

What is this clinical trial studying?

A study testing Naltrexone 50mg (Whanin Naltrexone Tab. 50mg) in people with Nonsuicidal Self-Injury and Self-Injurious Behavior, run by Seoul National University Hospital at 3 sites 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 6 inclusion and 14 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: opening soon, as of the sponsor's last update on 11 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 3 sites 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. Some participants in this study may receive a placebo. 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 Myeong-hyeon Mun, MD, Master's Degree (+821085171499, psalms139@hanmail.net), or a site near the patient. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

Total Number of Nonsuicidal Self-Injury Episodes During the 6-Week Treatment Period (time frame: Baseline to Week 6). It is what the study was designed to measure, not a finding.

Where can I read the original study information?

On the ClinicalTrials.gov record for NCT07641283, which also lists 14 linked publications.

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 11 Jun 2026; AzTrials last refreshed its copy on 26 Oct 2026.

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