In this randomized clinical trial, subjects will be assigned to either an assay-guided treatment condition (AGT) or a treatment-as-usual condition (TAU). All subjects will provide a DNA sample at the Screening Visit for the Genecept Assay ™. In the AGT condition, assay results will be provided to the treating investigator, who will use the results to guide antidepressant pharmacotherapy. In the TAU condition, the investigator will treat the subjects without the knowledge of the pharmacogenetic testing results. Assay results for all subjects will be provided to the investigator once all Week 8 visit procedures have been completed. Raters of the primary endpoint assessment and subjects will remain blinded to treatment assignment.
This study compares efficacy and safety outcomes in Major Depressive Disorder (MDD) adult patients randomized to assay-guided treatment (AGT) or treatment-as-usual (TAU). The treatment duration will be 8-weeks. Subjects will be assessed at visits at Week 2, 4, 6 and 8. Approximately 300 subjects will be randomized 1:1 to the two treatment group (AGT and TAU). This is a multi-center trial, with approximately 25 sites in the US. Randomization will be by IWRS. The treating investigator will be unblinded to treatment assignment (necessarily). Other site staff, sponsor staff (including site monitors) and all others will be blinded to treatment assignment for the duration of the subject's participation in the study. The (blinded) rater for the primary endpoint, the SIGH-D-17 Hamilton Depression Scale, will have no other contact with the subject such as collection of screening data, follow-up assessments, documentation of adverse events, etc. Blinded raters will not discuss subjects with other study staff. After recruitment for main study is completed, an additional 70 subjects , age 65 years and older will be randomized to the Exploratory Elderly MDD Study. This follow-on sub-study will apply all procedures of the main study to this elderly population subset.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
DOUBLE
Enrollment
305
The assay provides information to guide pharmacotherapeutic decisions personalized to a patient's genetic profile, to maximize improvement in symptomatology and minimize treatment failure and treatment intolerability.
Subjects are treated-as-usual without the aid of the assay.
University of Alabama - Birmingham
Birmingham, Alabama, United States
Noesis Pharma
Phoenix, Arizona, United States
Woodland Research Northwest
Springdale, Arkansas, United States
Collaborative Neuroscience Network, Inc. - Garden Grove
Garden Grove, California, United States
Pacific Institute of Medical Research
Los Angeles, California, United States
Pacific Research Partners, LLC
Oakland, California, United States
Artemis Institute for Clinical Research
San Diego, California, United States
Collaborative Neuroscience Network, Inc. - Torrance
Torrance, California, United States
Pacific Clinical Research Medical Group
Upland, California, United States
Florida Clinical Research Center, LLC - Bradenton
Bradenton, Florida, United States
...and 13 more locations
Mean Change From Baseline in SIGH-D-17 Score at 8 Weeks.
SIGH-D-17: 17-item rater-administered Structured Interview Guide of the Hamilton Depression Rating Scale Scoring is based on the 17-item scale and scores range from 0 minimum to 52 maximum. Scores of 0-7 are considered as being normal, 8-16 suggest mild depression, 17-23 moderate depression and scores over 24 are indicative of severe depression; the maximum score being 52 on the 17-point scale.
Time frame: Baseline to 8 Weeks
Mean Change From Baseline in QIDS-SR16 Score at 8 Weeks.
QIDS-SR16: 16-item Quick Inventory of Depressive Symptomatology Self-Report QIDS-SR16 ranges from a score of 0 minimum to 27 maximum. In terms of severity of depression, Scores of 0 to 5 reflect "none", scores of 6 to 15 reflect "mild", scores of 7-20 reflect "moderate and scores of 21 to 27 reflect "severe" depression.
Time frame: Baseline to 8 Weeks
Percentage of Treatment Responders at Week 8 Based on ≥ 50% Reduction of SIGH-D-17 Score From Baseline.
SIGH-D-17: 17-item rater-administered Structured Interview Guide of the Hamilton Depression Rating Scale
Time frame: Baseline to 8 Weeks
Percentage of Treatment Responders at Week 8 Based on ≥ 50% Reduction of QIDS-SR16 Score From Baseline.
QIDS-SR16: 16-item Quick Inventory of Depressive Symptomatology Self-Report QIDS-SR16 ranges from a score of 0 minimum to 27 maximum. In terms of severity of depression, Scores of 0 to 5 reflect "none", scores of 6 to 15 reflect "mild", scores of 7-20 reflect "moderate and scores of 21 to 27 reflect "severe" depression.
Time frame: Baseline to 8 Weeks
Percentage of Treatment Responders at Week 8 Based on ≤ 3 Score on the CGI-I.
CGI-I: Clinical Global Impression Improvement scale; a clinician-rated scale that measures the improvement or worsening of a patient's symptoms The CGI-I is rated on a 7-point scale, with the improvement in severity of illness scale using a range of responses from 1 (Very much improved) through to 7 (Very much worse). A score of 0 indicates Patient was not able to be assessed
Time frame: Baseline to 8 Weeks
Percentage of Remitters at Week 8 Based on ≤ 7 Score on the SIGH-D-17.
SIGH-D-17: 17-item rater-administered Structured Interview Guide of the Hamilton Depression Rating Scale Scoring is based on the 17-item scale and scores range from 0 minimum to 52 maximum. Scores of 0-7 are considered as being normal, 8-16 suggest mild depression, 17-23 moderate depression and scores over 24 are indicative of severe depression; the maximum score being 52 on the 17-point scale.
Time frame: Baseline to 8 Weeks
Percentage of Remitters at Week 8 Based on ≤ 5 Score on the QIDS-SR16.
QIDS-SR16: 16-item Quick Inventory of Depressive Symptomatology Self-Report QIDS-SR16 ranges from a score of 0 minimum to 27 maximum. In terms of severity of depression, Scores of 0 to 5 reflect "none", scores of 6 to 15 reflect "mild", scores of 7-20 reflect "moderate and scores of 21 to 27 reflect "severe" depression.
Time frame: Baseline to 8 Weeks
Safety Outcomes Based on Frequency, Intensity and Burden of Side Effects Rating (FIBSER).
A 3-question patient-rated scale for assessing frequency, intensity, and burden of medication side effects for patients receiving treatment for depression. The Frequency, Intensity, and Burden of Side Effects-Rating (FIBSER) questionnaire uses 3 questions with a 6-point Likert measurement scale. A score of 0-2 on question 3 (burden of side effects) represents an acceptable low side-effect burden usually requiring no treatment adjustment. A score of 3 or 4 indicates moderate side-effect burden that should be evaluated further (eg, timing related to dose change, patient concerns, etc), and an adjustment such as a dose decrease considered. A score of 5 or 6 indicates a high burden warranting a change such as dose decrease, switching, or direct treatment of the side effect(s).
Time frame: Baseline to 8 Weeks
Safety Outcomes Based on Frequency and Severity of Reported Adverse Events.
Untoward medical occurrence in a subject administered a pharmaceutical product which does not necessarily have to have a causal relationship with treatment. As based on FIBSER The Frequency, Intensity, and Burden of Side Effects-Rating (FIBSER) questionnaire uses 3 questions with a 6-point Likert measurement scale. A score of 0-2 on question 3 (burden of side effects) represents an acceptable low side-effect burden usually requiring no treatment adjustment. A score of 3 or 4 indicates moderate side-effect burden that should be evaluated further (eg, timing related to dose change, patient concerns, etc), and an adjustment such as a dose decrease considered. A score of 5 or 6 indicates a high burden warranting a change such as dose decrease, switching, or direct treatment of the side effect(s). Scores refer to intensity, frequency and interference.
Time frame: Screening to 8 Weeks
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