Dallas 2K: A Natural History Study of Depression
The Dallas 2K is a 10-year natural history, longitudinal, prospective study of a cohort of 2,000 participants that will help uncover the socio-demographic, lifestyle, clinical, psychological and neurobiological factors that contribute to anti-depressant treatment response: remission, recurrence, relapse and individual outcomes in depressive disorders. Hence, the expected duration of this study is 20 years in length. Since this is an observational study, investigators will explore a comprehensive panel of carefully selected participant specific parameters: socio-demographic (age, ethnicity, economic); lifestyle (physical activity, substance use); clinical (medical history, anxious depression, early life trauma), biological (biomarkers in blood, saliva, urine), behavioral (cognitive, emotional), neurophysiological (EEG), and neuroimaging (structural, functional brain circuitry) with the goal to develop the most robust predictive models of treatment response and of depression outcomes. There is no medication or non-medication treatment or intervention provided by this study. Subjects will have elevated symptomatology of nonpsychotic chronic or recurrent depressive disorder and will be currently receiving or will be prescribed standard of care medication or non-medication based treatments by their providers/clinicians. The study cohort will reflect the wide range of patients seen in typical primary or psychiatric care settings, and may include unipolar or bipolar disorders and dysthymia (a more chronic form of depression). The cohort will be broadly representative of and generalizable to the US general population as a whole.
Start: September 2016