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16-week Comparative Effectiveness Trial of Lamotrigine vs. Fluoxetine for Bipolar Depression (FLAME)

The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Read our disclaimer for details. Identifier: NCT02389712
Recruitment Status : Terminated (Difficulties with recruitment)
First Posted : March 17, 2015
Results First Posted : June 11, 2019
Last Update Posted : June 19, 2019
J Willard and Alice S. Marriott Foundation
Information provided by (Responsible Party):
Mark Frye, Mayo Clinic

Brief Summary:
The FLAME Study is a 16-week clinical trial to study treatment with lamotrigine or fluoxetine in bipolar I, II and bipolar schizoaffective depressed adults. The purpose of the trial is to have a better understanding of whether individuals with a particular gene type and other inherited biological markers will have a good response to fluoxetine or lamotrigine, or alternatively, would be more likely to have side effects to this medication.

Condition or disease Intervention/treatment Phase
Bipolar Disorder Drug: Lamotrigine Drug: Fluoxetine Phase 4

Detailed Description:

Depression is the predominant prevailing mood state of bipolar disorder and it is associated with substantial morbidity and mortality. However, in comparison to acute mania, bipolar depression is understudied both from the standpoint of its pathophysiology as well as clinical trials and treatment development. Given the lack of evidence-based guidelines, clinicians and participants enter a treatment phase with little guidance.

The FLAME Study is a 16-week, open randomized comparative effectiveness trial evaluating genomic predictors and biomarkers of response and adverse events to treatment with lamotrigine (n=200) and fluoxetine (n=200) for bipolar I, II and bipolar schizoaffective depressed adults (18-65). Participants will be recruited over a 5-year period.

It is known that functionally significant genetic polymorphisms of pharmacokinetics and pharmacodynamic pathways can influence individual differences in repose to specific medications. We propose to evaluate the contribution of these pharmacogenomic variations to lamotrigine and fluoxetine treatment response and adverse events. We will correlate clinical phenotypes of response and adverse events to treatment with genotype and haplotype variations of drug metabolism, neurotransmitter biosynthesis, (metabolism, storage, release, reuptake), receptor and intracellular signaling-that have been previously implicated to either lamotrigine or fluoxetine. These initial steps will be complemented with genome-wide analysis (GWA), pathway analysis and other candidate gene studies.

Based on our results we aim to develop a translational treatment algorithm of bipolar depression that may help individualized treatment for bipolar depression. This algorithm for participants could potentially increase the likelihood of successful treatment interventions, deliver the "right treatment, for the right participant at the right time", and decrease the number of ineffective treatments and/or risk for serious adverse events.

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Study Type : Interventional  (Clinical Trial)
Actual Enrollment : 2 participants
Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: None (Open Label)
Primary Purpose: Treatment
Official Title: 16-week Open Randomized Comparative Effectiveness Trial of Lamotrigine vs. Fluoxetine for Bipolar Depression: Pharmacogenomic and Biomarker Predictors of Response
Study Start Date : March 2015
Actual Primary Completion Date : May 23, 2018
Actual Study Completion Date : May 23, 2018

Resource links provided by the National Library of Medicine

MedlinePlus related topics: Bipolar Disorder

Arm Intervention/treatment
Active Comparator: Lamotrigine
Subjects on this arm will be randomized to Lamotrigine.
Drug: Lamotrigine
Lamotrigine dosing: 25 mg daily x 2 weeks, 50 mg daily x 2 weeks, 100 mg daily x 2 weeks, 200 mg (100 mg bid)) x 4 weeks. If patient still has at least mild depressive symptoms, the dose can be increased to 300 mg daily for 2 weeks and 400 mg for 4 weeks. Dose will be held for treatment response and can be reduced for side effects.
Other Name: Lamictal

Active Comparator: Fluoxetine
Subjects on this arm will be randomized to Fluoxetine.
Drug: Fluoxetine
Fluoxetine dosing: 20mg for month 1, 40mg for month 2, and if still depressed (CGI ≥ 3) 60mg for month 3 and 4. Lower doses of fluoxetine will be prescribed for those with side effects. For known Cytochrome P450 2D6 poor metabolizers, fluoxetine will not be dosed > 40mg.
Other Name: Prozac

Primary Outcome Measures :
  1. Inventory for Depressive Symptoms [ Time Frame: 12 weeks ]

Information from the National Library of Medicine

Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the contacts provided below. For general information, Learn About Clinical Studies.

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Ages Eligible for Study:   18 Years to 65 Years   (Adult, Older Adult)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No

Inclusion Criteria:

  • Adult participants, age 18-65.
  • Outpatients or inpatients with a diagnosis of bipolar I, II or schizoaffective bipolar disorder, depressed phase, non-psychotic, (DSM-5 criteria, Structured Clinical Interview for the Diagnostic and Statistical Manual for Mental Disorders Module D confirmed)
  • At least mild symptom severity of depression as defined by the Clinical Global Impression for Bipolar Disorder (CGI-BP, Spearing et al. 1997) >2.
  • Bipolar I participants must be on conventional mood stabilizing treatment [lithium, divalproex or valproate, or an atypical antipsychotic]. Participants with a bipolar II disorder may pursue the FLAME Study as monotherapy.
  • Negative urine pregnancy test.
  • Participants not planning pregnancy in the near future (6 months).
  • Negative urine toxicology screen (except cannabis).
  • No evidence of clinically significant laboratory screening tests (complete blood count (CBC); electrolytes; thyroid stimulating hormone (TSH); creatinine/blood urea nitrogen, Aspartate Aminotransferase (AST)/ALT). Clinical laboratory evaluation within the last three months is acceptable.

Exclusion Criteria:

  • Inability or unwilling to provide informed consent.
  • Inability to understand English.
  • Actively suicidal participants at screening or enrollment visit as defined by a response of 3 or 4 on question 4 of the Bipolar Inventory of Symptoms Scale (BISS).
  • Active delusions or hallucinations defined as a score of 3 or 4 on the BISS question 40 (persecutory ideas) or 41 (delusions or hallucinations).
  • Impaired insight as defined as a score of 3 or 4 on BISS question 42 (insight).
  • Hypomania defined by a BISS manic subscore of ≥15.
  • Axis I or II comorbidity that by referring mental health professional and/or study psychiatrist is primary need of treatment. (This will be assessed by the site principal investigator, who has >10 years clinical experience with this population. Hospital discharge summaries and outpatient medical records may be reviewed (i.e., adequate trials of mood stabilizing treatments with minimal to no response, prominent self-injurious behavior in the absence of significant mood symptomatology, or atypical cycle patterns) to make this decision.
  • Pregnant participants
  • Unwilling or unable to taper any current antidepressant therapy
  • Participants currently breastfeeding
  • Female not practicing a reliable form of birth control (condom, intrauterine device (IUD), Depo-Provera injection)
  • Due to lamotrigine pharmacokinetics, female subjects wishing to commence oral contraceptive therapy (OCT) within 3 months of enrollment date or anticipate discontinuing OCT during study (stable oral contraceptive therapy exception).
  • History of active substance abuse disorder within the last 3 months (other than caffeine or cannabis)
  • Participants with medical contraindications that preclude lamotrigine or fluoxetine treatment
  • History of severe adverse reaction to lamotrigine and/or fluoxetine
  • Current carbamazepine or oxcarbazepine treatment
  • Unstable active medical illness

Information from the National Library of Medicine

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.

Please refer to this study by its identifier (NCT number): NCT02389712

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United States, Minnesota
Mayo Clinic
Rochester, Minnesota, United States, 55905
Sponsors and Collaborators
Mayo Clinic
J Willard and Alice S. Marriott Foundation
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Principal Investigator: Mark A Frye, MD Mayo Clinic
  Study Documents (Full-Text)

Documents provided by Mark Frye, Mayo Clinic:
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Responsible Party: Mark Frye, M.D., Mayo Clinic Identifier: NCT02389712    
Other Study ID Numbers: 13-003545-1
UL1TR000135 ( U.S. NIH Grant/Contract )
First Posted: March 17, 2015    Key Record Dates
Results First Posted: June 11, 2019
Last Update Posted: June 19, 2019
Last Verified: June 2019
Individual Participant Data (IPD) Sharing Statement:
Plan to Share IPD: No
Keywords provided by Mark Frye, Mayo Clinic:
Bipolar Disorder
Mayo Clinic
Additional relevant MeSH terms:
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Bipolar Disorder
Bipolar and Related Disorders
Mental Disorders
Serotonin Uptake Inhibitors
Neurotransmitter Uptake Inhibitors
Membrane Transport Modulators
Molecular Mechanisms of Pharmacological Action
Neurotransmitter Agents
Serotonin Agents
Physiological Effects of Drugs
Antidepressive Agents, Second-Generation
Antidepressive Agents
Psychotropic Drugs
Cytochrome P-450 CYP2D6 Inhibitors
Cytochrome P-450 Enzyme Inhibitors
Enzyme Inhibitors
Calcium Channel Blockers
Calcium-Regulating Hormones and Agents
Antipsychotic Agents
Tranquilizing Agents
Central Nervous System Depressants
Sodium Channel Blockers