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  • Title: Retrospective analysis of suicidality in patients treated with the antidepressant desvenlafaxine.
    Author: Tourian KA, Padmanabhan K, Groark J, Ninan PT.
    Journal: J Clin Psychopharmacol; 2010 Aug; 30(4):411-6. PubMed ID: 20631558.
    Abstract:
    The objective of this analysis was to assess the risk of increased suicidal thoughts and behavior (suicidality) with desvenlafaxine (administered as desvenlafaxine succinate) in patients with major depressive disorder (MDD). Data from 9 double-blind, 8-week studies in outpatients with MDD were analyzed retrospectively. Patients were randomly assigned to desvenlafaxine (n = 1834) or placebo (n = 1116). Adverse events (AEs) related to suicidality were identified by searching the AE database for text strings possibly related to suicidality; false positives were excluded. Narratives for each case were prepared and blinded for review. Events were classified according to the Columbia Classification Algorithm of Suicide Assessment. Odds ratios were calculated; chi tests were used to compare treatment groups. Occurrence of emerging or worsening suicidality, based on the 17-item Hamilton Rating Scale for Depression suicide item, was compared for desvenlafaxine and placebo using chi tests. In all, 17 (0.93%) of 1834 patients receiving desvenlafaxine and 8 (0.72%) of 1116 receiving placebo reported possible suicidality-related AEs. Events were relatively evenly distributed across treatment groups. One patient randomly assigned to desvenlafaxine treatment died of completed suicide during the on-therapy period. There were no significant differences between groups in the risk for any class of suicide-related events, including completed suicide or suicide attempt. Odds of emergence or worsening of suicidality 17-item (Hamilton Rating Scale for Depression suicide item) did not differ significantly between treatment groups. No evidence of a signal for increased suicidality was detected in adult patients treated with desvenlafaxine in short-term MDD trials. As suicidal events were extremely rare, a true increased risk cannot be ruled out.
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