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Commonwealth v. ClancyInvestigation Archive • 2026
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Source: Plymouth Superior Court filing • Public record

Switch to Mania After Acute Antidepressant Treatment for Bipolar Depression: A Systematic Review and Network Meta-Analysis of Randomised Controlled Trials

Oliva, V., De Prisco, M., La Spina, E., Paolucci, S., Fico, G., Anmella, G., et al. (2025). Switch to mania after acute antidepressant treatment for bipolar depression: a systematic review and network meta-analysis of randomised controlled trials. *eClinicalMedicine*, 87, 103413. https://doi.org/10.

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Switch to Mania After Acute Antidepressant Treatment for Bipolar Depression: A Systematic Review and Network Meta-Analysis of Randomised Controlled Trials

Citation

Oliva, V., De Prisco, M., La Spina, E., Paolucci, S., Fico, G., Anmella, G., et al. (2025). Switch to mania after acute antidepressant treatment for bipolar depression: a systematic review and network meta-analysis of randomised controlled trials. eClinicalMedicine, 87, 103413. https://doi.org/10.1016/j.eclinm.2025.103413

Published

2025

Journal

eClinicalMedicine (The Lancet)

Study Design

Systematic review and network meta-analysis (NMA) of randomised controlled trials (RCTs)

Data Sources

PubMed, Embase, PsycINFO, and Web of Science from database inception up to Feb 19, 2025, with no language restrictions.

Study Selection

  • 2434 records screened
  • 13 RCTs included (1362 patients)
  • 818 female (60.1%)
  • 511 male (37.5%)
  • 33 not disclosed (2.4%)
  • Primary Outcome

    Rate of switch to mania after antidepressant treatment

    Key Findings

    1. No individual antidepressant showed a significantly increased switch risk compared to placebo

    2. Venlafaxine showed the highest risk estimate among antidepressants, though not statistically significant: RR 4.53 (95% CI 0.47-43.25)

    3. Venlafaxine was the only compound with consistent signals of increased switch in individual studies

    4. Evidence base was larger for add-on therapy, while fewer data were available for monotherapy

    5. Sensitivity analyses confirmed the results

    6. Heterogeneity was low

    7. Overall confidence in the evidence was rated as low

    Interpretation

    Although some evidence of increased risk of switching to mania was observed, no individual antidepressant showed a significantly increased switch risk compared to placebo. However, venlafaxine consistently showed the highest relative risk across individual studies, sensitivity and post-hoc analyses. These findings offer a more granular understanding of switch risk among antidepressants and highlight venlafaxine as a compound warranting special attention.

    Implications

  • Supports cautious short-term use of antidepressants in bipolar depression, particularly as add-on therapy
  • Treatment decisions should prioritize patient-specific factors (bipolar subtype, treatment history, comorbidities, prior switch episodes)
  • Long-term risk remains uncertain due to short trial durations (max 10 weeks)
  • Longer-term studies and real-world data needed
  • Limitations

  • Short trial durations (max 10 weeks)
  • Low confidence ratings
  • Unable to perform stratified analyses by bipolar subtype
  • Heterogeneity in definition of switch to mania across studies
  • Post-hoc analyses should be interpreted with caution
  • Preregistration

    Protocol preregistered on the Open Science Framework

    Relevance to Clancy Case

    This study is relevant to understanding the pharmacological context of postpartum psychiatric treatment. The finding that venlafaxine consistently showed the highest (though not statistically significant) risk of switch to mania is clinically significant for understanding medication-related risks in bipolar spectrum conditions. The study underscores the complexity of antidepressant management in vulnerable populations.