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The study for adjunctive lithium for extended effect on antidepressant action of ketamine and its neural correlates.

The study for adjunctive lithium for extended effect on antidepressant action of ketamine and its neural correlates. - Adjunctive treatment of lithium for extended action of ketamine. (ATLEK study)

Status
Active, not recruiting
Phases
Unknown
Study type
Interventional
Source
JPRN
Registry ID
JPRN-UMIN000017529
Enrollment
80
Registered
2015-05-12
Start date
2015-02-02
Completion date
Unknown
Last updated
2026-06-29

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Treatment-resistant monopolar/bipolar depression

Interventions

Discontinuation of previous medication. Taking Lithium carbonate (400mg-1000mg, serum level &gt
=0.6mEq) . Repetitive (twice a week, 4 times total) administration of ketamine (0.5mg/kg/40min). Discontinuation of previous medication. Placebo pills at night for duration of the study. Repetitive

Sponsors

Kurume University
Lead Sponsor

Eligibility

Sex/Gender
All

Inclusion criteria

Inclusion criteria: 1.Participants must fulfill ICD-10 criteria for F32 Major Depression, F33 Recurrent major depression, F31 Bipolar disorder 2.Participants who diagnosed F32 Major Depression, F33 Recurrent major depression have not responded to two or more adequate trials of an antidepressant (>=imipramine equivalent 150mg) for at least 4-6 weeks. Participants who diagnosed F31 Bipolar disorder have not responded to adequate trials of mood stabilizer or olanzapine or quetiapine. 3.Current Major Depressive Episode of at least moderate severity, defined as a HAM-D 17 score >=18. 4.Each participant must have a level of understanding sufficient to agree to all tests and examinations required by the protocol and must sign an informed consent document.

Exclusion criteria

Exclusion criteria: 1.Patients with any clinically significant psychiatric disorder other than ICD-10 criteria for F32, F33, F31. 2.Patients with Lifetime history of mood-incongruent psychotic features based on DSM-IV-TR. 3.Patients judged clinically to be at serious and imminent suicidal or homicidal risk. 4.Imminent risk of other harm. 5.Patients with any organic brain disease. 6.Patients with unstable medical illness. 7.Patients treated with lithium within two weeks of consent. 8.Patients who are intolerant to Ketamine or Lithium because of reasons below; thyroid dysfunction, parathyroid dysfunction, renal dysfunction, atrio-ventricular block, epilepsy, uncontrolled hypertension, adverse events in using ketamine or lithium ever before. 9.Women who are pregnant or who wish to become pregnant during the research.

Design outcomes

Primary

MeasureTime frame
Montgomery Asberg Depression Rating Scale

Secondary

MeasureTime frame
Hamilton Depressive Scare Serum BDNF, Plasma HVA, MHPG Functional connectivity between dorsal nexus and precuneus using rfMRI.

Countries

Japan

Contacts

Public ContactNaoki Horikawa

Kurume University School of Medicine Department of Neuropsychiatry

horikawa_naoki@kurume-u.ac.jp0942-31-7564

Outcome results

None listed

Source: JPRN (via WHO ICTRP) · Data processed: Jul 3, 2026