https://www.selleckchem.com/products/Bafetinib.html First onsets of depression are especially common in adolescent females and often develop into chronic/recurrent illness. Surprisingly few studies have comprehensively evaluated multiple domains of etiologically-informative risk factors for first onset in adolescents from the community. We investigated whether clinical, cognitive, personality, interpersonal, and biological risk factors prospectively predict a first onset of depressive disorder (DD), and of DD with a chronic/recurrent course, in a community sample of adolescent girls. 479 girls (13.5-15.5 years) with no history of DD completed baseline assessments of risk factors and five diagnostic assessments over 3 years. Baseline measures were analyzed separately and jointly to prospectively predict first-onset DD and first-onset chronic/recurrent DD. Most risk factors predicted first-onset DD (n=93), including depressive symptoms, anxiety disorders, rumination, personality traits, blunted neural response (late positive potential [LPP]) to unpleasant set of risk factors uniquely contributing to first onsets may represent core vulnerabilities for adolescent-onset depression and promising prevention targets. Behavioral activation is ideal for embedded behavioral health providers (BHPs) working in primary care settings treating patients reporting a range of depressive symptoms. The current study tested whether a brief version of Behavioral Activation (two 30-minute appointments, 2 boosters) designed for primary care (BA-PC) was more effective than primary care behavioral health treatment-as-usual (TAU) in reducing depressive symptoms and improving quality of life and functioning. Parallel-arm, multi-site randomized controlled trial. 140 Veterans were randomized to BA-PC or TAU and completed assessments at baseline, 6 weeks, 12 weeks, and 24 weeks. Reductions in depressive symptoms were observed in both groups between baseline and 3-weeks prior to any treatment, with