Bipolar At-Risk Criteria and Risk of Bipolar Disorder Over 10 or More Years

Author:

Ratheesh Aswin12,Hammond Dylan12,Watson Michael12,Betts Jennifer12,Siegel Emma12,McGorry Patrick12,Berk Michael3,Cotton Susan12,Chanen Andrew12,Nelson Barnaby12,Bechdolf Andreas45

Affiliation:

1. Orygen, Parkville, Victoria, Australia

2. Centre for Youth Mental Health, The University of Melbourne, Parkville, Victoria, Australia

3. Institute for Mental and Physical Health and Clinical Translation, Deakin University School of Medicine, Barwon Health, Geelong, Victoria, Australia

4. Department of Psychiatry, Psychotherapy and Psychosomatic Medicine, Vivantes Klinikum am Urban und Vivantes Klinikum im Friedrichshain, Berlin, Germany

5. Department of Psychiatry and Psychotherapy, Campus Charité Mitte, Charité-Universitätsmedizin, Berlin, Germany

Abstract

ImportancePredicting the onset of bipolar disorder (BD) could facilitate preventive treatments. Among risk measures, bipolar at-risk (BAR) criteria have shown promise in predicting onset of bipolar disorder in the first year in clinical cohorts; however, it is not known whether BAR criteria are associated with the onset of BD in the longer term.ObjectiveTo assess the association of BAR criteria with onset of BD over 10 to 13 years follow-up.Design, Setting, and ParticipantsThis prospective cohort study, completed between May 1, 2020, and November 7, 2022, included consenting people seeking help for nonpsychotic major mental health difficulties, including mood, personality, and substance use disorders, who were originally recruited at ages 15 to 25 years from a tertiary youth mental health setting in metropolitan Melbourne, Victoria, Australia, from May 1, 2008, to September 30, 2010.ExposureMeeting BAR criteria at baseline. Criteria included subthreshold mania, cyclothymic features, subthreshold depression, and family history of BD. A matched clinical comparison group was recruited from the same help-seeking population.Main Outcomes and MeasuresThe primary outcome was expert consensus diagnosis of BD I or II based on the Mini International Neuropsychiatric Interview, self-reported information collected through online assessments, and linked data on mental health service utilization in Victoria over 10 to 13 years of follow-up.ResultsAmong 69 eligible participants, follow-up data were available for 60 (88.2%). The mean (SD) age at the end of follow-up was 32.9 (2.8) years, and 49 (81.7%) were women. A total of 28 participants met BAR criteria, and 32 were in the comparison group. In the BAR group, 8 patients (28.6%) developed BD over a mean (SD) of 11.1 (0.7) years of follow-up, and no patients in the comparison group developed BD. The risk of developing BD was higher in the BAR group than in the non-BAR group (χ21 = 70.0; P < .001). The proportions of transitions to BD were equal in the first and second halves of the follow-up period.Conclusions and relevanceIn this cohort study of participants seeking care for mental health difficulties, patients meeting the BAR criteria were significantly more likely to transition to BD over a decade after ascertainment compared with patients not meeting the BAR criteria. The findings suggest that those meeting BAR criteria may benefit from longer-term monitoring and support. Evaluation of predictive properties in longer-term studies using a risk measure will help with implementation of BAR criteria in clinical settings.

Publisher

American Medical Association (AMA)

Subject

General Medicine

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