Trial to Evaluate the Effectiveness of a Digital Therapeutics in Adults Diagnosed With Major Depressive Disorder

A Multi-center, Randomized, Controlled Trial to Evaluate the Effectiveness of a Digital Therapeutic (CT-152) as Adjunctive Therapy in Adult Subjects Diagnosed With Major Depressive Disorder

This study compares the effectiveness of 2 digital therapeutics in adult participants diagnosed with major depressive disorder (MDD) who are on antidepressant therapy (ADT) monotherapy for the treatment of depression.

This is a pivotal, 13-week, multi-center, randomized, controlled trial to evaluate the effectiveness and safety of two digital therapeutics in adult participants diagnosed with MDD who are on antidepressant therapy (ADT) monotherapy for the treatment of depression.

The trial consists of a 3-week screening period, a 6-week treatment period, and a 4-week extension. Trial visits will be conducted remotely either by video visit or telephone. The screening visit may be performed in person at the discretion of the investigator. Eligible participants will be randomized to 1 of 2 digital therapeutics within a mobile application that will reside on the participant's personal iPhone or smartphone.

The trial population will include male and female participants between 22 and 64 years of age with a primary diagnosis of major depressive disorder (MDD) who are on an ADT for the treatment of depression. This trial will analyze data gathered from approximately 360 participants in the United States. An interim analysis will be conducted when a targeted sample of the first 180 participants has completed week 6 or discontinued the trial prior to week 6.

Key Inclusion Criteria:

• Participants with a current primary diagnosis of MDD.
• Participants with a Hamilton Rating Scale for Depression, 17-item (HAM-D17) score ≥ 18
• Participants who are receiving treatment with an adequate dose and duration of an ADT and who are willing to maintain that same treatment regimen for the duration of this trial.
• Participants who are the only users of an iPhone or an Android smartphone, and agree to download and use the digital mobile application as required by the protocol.

Key Exclusion Criteria:

• Participants with an inadequate response to > 1 adequate trial of ADT for the current episode.
• Participants who are receiving or have received psychotherapy within 90 days prior to screening.
• Participants who are currently using a computer, web, or smartphone software-based application for mental health or depression.
• Participants with a history of schizophrenia, schizoaffective disorder, other psychotic disorder, or Bipolar I/II disorder, or current posttraumatic stress disorder, panic disorder, obsessive-compulsive disorder, or personality disorder
• General Anxiety Disorder/social anxiety can be present as long as they are not the main disorder requiring treatment.