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    Adjunctive treatment with aripiprazole improves depression

    Written by Medha Baranwal Baranwal Published On 2019-07-10T19:05:44+05:30  |  Updated On 13 Jan 2025 4:11 PM IST
    Adjunctive treatment with aripiprazole improves depression

    Canada: Adjunctive use of aripiprazole in escitalopram nonresponders gives a high response rate and improves outcomes in patients with depression, finds a recent study published in The Journal of Clinical Psychiatry.


    This study demonstrates comparable symptomatic and functional outcomes in patients with major depressive disorder (MDD) compared to those of other large practical-design studies.


    Sidney H. Kennedy, Department of Psychiatry, St Michael's Hospital, University of Toronto, Toronto, Ontario, Canada, and colleagues reported the functional and symptomatic outcomes in MDD patients during a 2-phase treatment trial and estimated the value of early improvement after 2 weeks in predicting clinical response to escitalopram and subsequently to adjunctive treatment with aripiprazole.


    The researchers recruited 211 patients aged 18-60 years of age who scored 24 or more in the Montgomery-Ashberg Depression Rating Scale (MADRS). The study involved two phases.




    • In phase 1, participants were treated with open-label escitalopram 10 to 20 mg/day for 8 weeks. At baseline and at other defined points, they were administered questionnaires. Participants also underwent neuroimaging, blood testing, and electroencephalography at baseline, week 2, and week 8. After 8 weeks, patients were classified as responders (≥50% decrease in MADRS score) and non-responders (<50% decrease in MADRS score from baseline).

    • In phase 2, responders continued escitalopram monotherapy at the same dose, and non-responders received adjunctive aripiprazole at 2 to 10 mg/day. Dose adjustments were made according to tolerability and side effects.


    The outcome measures used in this study were MADRS, Quick Inventory of Depressive Symptomatology, Clinical Global Impressions-Severity of Illness Scale, Sheehan Disability Scale, and Lam Employment Absence and Productivity Scale.


    Also Read: Agomelatine and escitalopram equally effective for treatment of anxiety

    Key findings of the study include:

    • Of the evaluable cohort, 180 participants completed phase 1 and 85 were responders. Among the 47% responders in phase 1, 91% had sustained response at the end of phase 2.

    • Among non-responders in phase 1, 61% achieved response in week 16 and exhibited significant reduction on major clinical and functional measures.

    • In regard to functional, symptomatic and combined outcomes, 18% in phase 1 achieved remission.

    • In phase 2, 52% of the escitalopram group and 19% of the aripiprazole group achieved remission.

    • Thresholds set at 20%, 30%, and 40% for early improvement after 2 weeks were measured for escitalopram at 8 weeks and to adjunctive aripiprazole at 16 weeks. The 20% threshold showed the best balance for sensitivity and specificity for escitalopram, whereas the 40% threshold had high sensitivity and positive predictive value but lower sensitivity and negative predictive value. Positive predictive value and specificity were highest at 40% threshold for adjunct aripiprazole group.

    • Evaluation of areas under the receiver operating characteristic curve for escitalopram showed 0.69 and 0.74 for response and remission at week 8. Escitalopram and aripiprazole showed AUC at 0.66 and 0.70 for response and remission at week 16.

    • The response and remission rates to escitalopram after 8 weeks of treatment were modest, though the response to escitalopram after 8 weeks was sustained in the majority of patients at 16 weeks.

    • There was also an overlap between functional and symptomatic outcomes by the end of phase 2. More than 50% of non-responders had a positive response to adjunctive aripiprazole at 16 weeks, and in both the phases, early assessment of symptomatic change at 2 weeks helped predict subsequent response rates.


    Also Read: Effectiveness of new fast-acting antidepressant nasal spray supported by new study

    "The combined use of clinical, neuroimaging, electroencephalography, and molecular data can provide an earlier prediction of response to therapy, thus helping in better therapeutic decision making," concluded the authors.



    clinical depressiondepressiondepression treatmentescitalopramescitalopram nonrespondersJournal of Clinical Psychiatrymajor depressive disorderMDDmental disorderMental IllnessMontgomery-Ashberg Depression Rating Scalepsychological disorderresponse rateSidney H. Kennedy

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    Medha Baranwal Baranwal
    Medha Baranwal Baranwal
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