About this trial
The goal is to study the effect of lithium compared to cariprazine in patients with depression in a bipolar disease.
The main question it aims to answer is:
Difference in change between the two groups from baseline to after 8 weeks treatment on Hamilton Ratings Scale for Depression, 6-item version (HDS-6)
Participants will be randomized to treatment with either lithium or cariprazin.
* Will meet for interview and ratings 4 times during study period. * In two meetings, there will be made blood samples and ECG. At one meeting also a Urine sample. * Will be contacted for telephone interviews at 6 occasions.
Eligibility criteria
This trial does not accept healthy volunteersQualifiers
A diagnosis of bipolar disorder, type 1 or type 2, and a current episode of depression according to DSM-5
Severity of depression: A score of at least 21 on the self-reported Major Depression Inventory (MDI).
No start or dose increase of psychotropic medication (except for benzodiazepines and benzodiazepine-like drugs (zopiclone, zolpidem, and melatonin)) in the two weeks prior to inclusion.
No new start of formalized psychotherapy sessions, excluding psychoeducation, during the 4 weeks prior to inclusion.
Disqualifiers
Prior or ongoing acute treatment of a depressive episode lasting > 14 days with either lithium or cariprazine as judged by the investigator.
ECT within the current depressive episode.
A score of MAS > 6.
A diagnosis of dementia.
Trial design
Parallel
Treatments tested in this trial
Lithium
DrugThe starting dose (day one) of lithium citrate is 12 mmol (one tablet of lithium citrate contains 6 mmol lithium) given once a day before bedtime. On day three the dose is increased to 18 mmol. Dose adjustments are permitted after 7 days in a flexible manner to result in a 12-hour se-lithium between 0.6 and 0.8 mmol/l, aiming for the upper limit at the treating physician's discretion.
Cariprazine
DrugThe starting dose for cariprazine is 1.5 mg daily in a single dose, and subsequently, after a minimum of two weeks, the dose can be increased to 3 mg and decreased again to 1.5 mg daily at the treating physician's discretion.
Treatment groups
Trial outcomes
Primary outcomes
Change in Hamilton Depressions scale, version 6 (HDS-6)
The primary aim is to investigate whether cariprazine is superior to lithium or vice versa in the acute treatment of patients with bipolar type 1 or 2 in a current depressive episode measured as change on the Hamilton Depression Scale, 6 item version, HDS-6. (Values 0- 22, higher scores mean a worse outcome).
Secondary outcomes
Difference-in-difference for HDS-17
Difference-in-differences for secondary continuous measures: Hamilton Depression Scale, 17 item version, HDS-17. (Values 0- 52, higher scores mean a worse outcome)
Difference-in-differences in HDS-6 for the PP 8 population
Difference-in-differences (baseline to 8 weeks) in HDS-6 for the PP 8 population. Hamilton Depression Scale, 6 item version, HDS-6. (Values 0- 22, higher scores mean a worse outcome).
Between-groups difference in proportion of responders and remitters in HDS-6 Scores.
Between-groups difference in proportion of responders and remitters at week 4 and 8 in HDS-6 scores. Hamilton Depression Scale, 6 item version, HDS-6. (Values 0- 22, higher scores mean a worse outcome).
Between-groups difference in proportion of responders and remitters
Between-groups difference in proportion of responders and remitters with response and remission defined by HDS-6 score without clinical relevant manic symptoms (MAS \<7) at planned or premature endpoint. Hamilton Depression Scale, 6 item version, HDS-6. (Values 0- 22, higher scores mean a worse outcome).
Sponsors and contacts
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Aalborg University Hospital
Lead sponsor
Glostrup University Hospital, Copenhagen
Collaborator
Mental Health Department Odense, University Clinic
Collaborator
Psychiatric Center Copenhagen, Rigshospitalet
Collaborator
Psychiatric Hospital, Hillerod
Collaborator