Suicidality and Risk of Suicide—Definition, Drug Safety Concerns, and a Necessary Target for Drug Development: A Consensus Statement
J Clin Psychiatry 2010;71(8):e1-e21
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Objective: To address issues concerning potential treatment-emergent “suicidality,” a consensus conference was convened March 23–24, 2009.
Participants: This gathering of participants from academia, government, and industry brought together experts in suicide prevention, clinical trial design, psychometrics, pharmacoepidemiology, and genetics, as well as research psychiatrists involved in studies of major depression, bipolar disorder, schizophrenia, substance abuse/dependence, and other psychiatric disorders associated with elevated suicide risk across the life cycle. The process involved reviews of the relevant literature, and a series of 6 breakout sessions focused on specific questions of interest.
Evidence: Each of the participants at the meeting received references relevant to the formal presentations (as well as the slides for the presentations) for their review prior to the meeting. In addition, the assessment instruments of suicidal ideation/behavior were reviewed in relationship to standard measures of validity, reliability, and clinical utility, and these findings were discussed at length in relevant breakout groups, in the final plenary session, and in the preparation of the article. Consensus and dissenting views were noted.
Consensus Process: Discussion and questions followed each formal presentation during the plenary sessions. Approximately 6 questions per breakout group were prepared in advance by members of the Steering Committee and each breakout group chair. Consensus in the breakout groups was achieved by nominal group process. Consensus recommendations and any dissent were reviewed for each breakout group at the final plenary session. All plenary sessions were recorded and transcribed by a court stenographer. Following the transcript, with input by each of the authors, the final paper went through 14 drafts. The output of the meeting was organized into this scholarly article, which has been developed by the authors with feedback from all participants at the meeting and represents a consensus view. Any areas of disagreement have been noted.
Conclusions: The term suicidality is not as clinically useful as more specific terminology (ideation, behavior, attempts, and suicide). Most participants applauded the FDA’s effort to promote standard definitions and definable expectations for investigators and industry sponsors by endorsing the terminology in the Columbia Classification Algorithm of Suicide Assessment (C-CASA). Further research of available assessment instruments is needed to verify their utility, reliability, and validity in identifying suicide-associated treatment-emergent adverse effects and/or a signal of efficacy in suicide prevention trials. The FDA needs to build upon its new authority to systematically monitor postmarketing events by encouraging the development of a validated instrument for postmarketing surveillance of suicidal ideation, behavior, and risk within informative large health care–related databases in the United States and abroad. Over time, the FDA, industry, and clinical researchers should evaluate the impact of the current Agency requirement that all CNS clinical drug trials must include a C-CASA–compatible screening instrument for assessing and documenting the occurrence of treatment-emergent suicidal ideation and behavior. Finally, patients at high risk for suicide can safely be included in clinical trials, if proper precautions are followed, and they need to be included to enable premarket assessments of the risks and benefits of medications related to suicidal ideation, suicidal behavior, and suicide in such patients.
J Clin Psychiatry 2010;71(8):e1–e21
Submitted: February 20, 2010; accepted May 19, 2010.
Published Online: August 16, 2010 (doi:10.4088/JCP.10cs06070blu).
Corresponding author: Roger E. Meyer, MD, Best Practice Project Management, Inc, PO Box 30219, Bethesda, MD 20824 (firstname.lastname@example.org).