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Investigating the Effectiveness and Tolerability of Intranasal Esketamine Among Older Adults With Treatment-Resistant Depression (TRD): A Post-hoc Analysis from the REAL-ESK Study Group

Giacomo D’andrea, Stefania Chiappini, Roger S McIntyre, Giulia Stefanelli, Rosalba Carullo, Ileana Andriola, Raffaella Zanardi, Vassilis Martiadis, Stefano L. Sensi, Gabriele Sani, Massimo Clerici, Giorgio Di Lorenzo, Antonio Vita, Mauro Pettorruso, Giovanni Martinotti

American Journal of Geriatric Psychiatry July 8, 2023 DOI: 10.1016/j.jagp.2023.06.016 (opens in new tab)

Study at a glance

AI-extracted from the abstract
Characteristics Post-hoc analysis of a multicenter, retrospective, observational study Peer reviewed
Sample size 30
Population Adults aged 65 years or older with treatment-resistant depression
Intervention Esketamine nasal spray
Duration 3 months
Topics Anxiety Depression Esketamine
Keywords Tolerability Post-hoc analysis Depression economics Adverse effect Rating scale Antidepressant
Citations 36
Key findings Esketamine nasal spray was associated with a 53.3% response rate and 33.33% remission rate at 3 months in older adults with treatment-resistant depression, with common adverse effects including dizziness, dissociation, and sedation.

Abstract

Introduction: Treatment-resistant depression (TRD) is a serious and debilitating psychiatric disorder that frequently affects older patients. Esketamine nasal spray (ESK-NS) has recently been approved as a treatment for TRD, with multiple studies establishing its efficacy and tolerability. However, the real-world effectiveness, tolerability, and safety of this treatment in older adults is still unclear.

Objectives: To evaluate the efficacy and tolerability of ESK-NS in older subjects with TRD.

Methods: This is a post-hoc analysis of the REAL-ESK study, a multicenter, retrospective, observational study. Participants here selected were 65 years or older at baseline. The Montgomery-Åsberg Depression Rating Scale (MADRS) and the Hamilton Anxiety Rating Scale (HAM-A) were used to assess depressive and anxiety symptoms, respectively. Data were collected at three-time points: baseline, 1 month after the start of treatment (T1), and 3 months after treatment (T2).

Results: <0.001, Cohen's d = 1.419). At T2, 53.3% of subjects were responders (MADRS score reduced ≥50%), while 33.33% were in remission (MADRS<10). ESK-NS-related adverse effects were in order of frequency dizziness (50%), followed by dissociation (33.3%), sedation (30%), and hypertension (13.33%). Six out of 30 participants (20%) discontinued treatment.

Conclusions: Our findings provide preliminary evidence of ESK-NS effectiveness in older adults with TRD, a highly debilitating depressive presentation. Furthermore, we observe high levels of treatment-emergent adverse events, which, in the majority of instances, did not require treatment suspension.

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