Pharmacogenomic Decision Support With GeneSight Psychotropic to Guide the Treatment of Major Depressive Disorder
Depressive Disorder, Major, Depression, Depressive Disorder
About this trial
This is an interventional treatment trial for Depressive Disorder, Major focused on measuring Pharmacogenomic, Pharmacogenomic Testing, Pharmacogenomics, Genetic Testing, Genetics, Major Depressive Disorder, GeneSight, Enhanced GeneSight, Psychotropic
Eligibility Criteria
Inclusion Criteria:
- 18 years of age or older;
- Suffer from a Major Depressive Episode meeting Diagnostic and Statistical Manual of Mental Disorders, Fourth Edition, Text Revision (DSM-IV-TR) criteria;
- Have had an inadequate response within the current episode to at least one psychotropic treatment in GEN. Inadequate response is defined as inadequate efficacy after 6 weeks of a psychotropic treatment or discontinuation of a psychotropic treatment due to adverse events (AEs) or intolerability;
- Have each a score on the 16-item Clinician Quick Inventory of Depressive Symptomatology (QIDS-C16) and 16-item Self-Report Quick Inventory of Depressive Symptomatology (QIDS-SR16) rating scales ≥ 11;
- Be able to understand the requirements of the study and provide written informed consent to participate in this study;
- Agree to abide by the study protocol and its restrictions and be able to complete all aspects of the study, including all visits and tests.
Exclusion Criteria:
- Patients posing a serious suicidal risk and/or in need of immediate hospitalization as judged by the Investigator;
- Patients with a diagnosis of Bipolar I or II disorder;
Patients with a current Axis I diagnosis of:
- Delirium
- Dementia
- Amnestic and/or other cognitive disorder
- Schizophrenia or other psychotic disorder;
- Patients having experienced hallucinations, delusions, or any psychotic symptomatology within the current depressive episode or during prior depressive episodes;
- Patient is currently in an inpatient facility;
- Patients with a history of hypothyroidism unless taking a stable dose of thyroid medication and asymptomatic or euthyroid for at least 6 months;
- Patients who meet DSM-IV-TR criteria for any significant current substance use disorder;
Patients with:
- hepatic insufficiency (three times the upper limit of normal (ULN) for aspartate aminotransferase (AST) and/or alanine aminotransferase (ALT)); liver transplant recipient; cirrhosis of the liver;
- malignancy (except basal cell carcinoma) and/or chemotherapy within 1 year prior to screening; malignancy more than 1 year prior to screening must have been local and without metastasis and/or recurrence, and if treated with chemotherapy, without nervous system complications;
- significant unstable medical condition or life threatening disease with - need for therapies that may obscure the results of treatment and/or of the study;
- Participation in another clinical trial within 30 days of the screening visit;
- Anticipated inability to attend scheduled study visits;
- Patients who in the judgment of the Investigator may be unreliable or uncooperative with the evaluation procedure outlined in this protocol;
- Patients with a history of prior pharmacogenomic testing;
- Any change in psychotropic medication (including change in dosage) between screening and baseline;
- Patients currently receiving electroconvulsive therapy (ECT), deep brain stimulation (DBS) or transcranial magnetic stimulation (TMS) treatments, or currently scheduled to receive maintenance treatments of ECT, DBS, or TMS during the course of the study;
- Patients who self-report to be pregnant or lactating;
- Patients with a history of gastric bypass surgery.
Sites / Locations
- Chatham-Kent Clinical Trials Research Center
- Hamilton Community Health Centre Family Health Organization
- Hamilton Medical Research Group
- St. Joseph's Healthcare Hamilton (SJHH)
- Milestone Research
- London Health Sciences Centre
- Parkwood Institute, London
- Hopital Montfort
- Thornhill Medical Centre
- Canadian Phase Onward Inc.
- Women's College Hospital
- Sinai Health System
- Centre for Addiction and Mental Health (CAMH)
- Manna Research
Arms of the Study
Arm 1
Arm 2
Arm 3
Experimental
Experimental
Active Comparator
GeneSight Psychotropic (GEN)
Enhanced-GeneSight Psychotropic (E-GEN)
Treatment as Usual (TAU)
The GeneSight Psychotropic (GEN) product is a pharmacogenomic decision support tool that helps clinicians to make informed, evidence-based decisions about proper drug selection. More specifically, patients are tested for clinically important genetic variants of multiple pharmacokinetic and pharmacodynamic genes that affect a patient's ability to metabolize, tolerate or respond to medications.
The current GEN test lacks predictive genes for antipsychotic-induced weight gain (AIWG), a major complication of antipsychotic drug use. Therefore, the Enhanced-GeneSight Psychotropic (E-GEN), which is an enhanced version of the GEN test, was developed by incorporating 6 new genes (represented by 7 SNPs) that are predictive for AIWG, to those used in the GEN algorithm. An increasing risk level associated with AIWG is estimated by an increasing number of risk genotypes that a given patient possesses among the 7 SNPs.
The comparator chosen for this study provides a "real world" comparison of standard of care for patients who receive no pharmacogenomics guidance. Patients randomized to the TAU arm will also have their DNA collected and a pharmacogenomic-based interpretive report will be generated using GEN testing. However, this report will not be shared with the treating clinicians until completion at 12 months of the study. Therefore, patients in this arm will receive clinical treatment as usual, without the use or knowledge of genotyping results by their treating clinicians.