Naturalistic conceptions of genetic optimism and precision psychiatry among those at clinical high-risk for psychosis.

AIM: Fuelled by genomics advances, recent emphasis on the concept of "precision medicine," and public optimism towards genetic advances, it is important to understand how those who are considered to be at clinical high-risk for psychosis (CHR) perceive possible benefits of genetic testing to inform future stakeholder education efforts. METHODS: Semistructured interviews were completed with 20 participants who met CHR criteria. Coding for genetic optimism was completed. RESULTS: Participants endorsed many conceptualizations of the link between genetics, the development of psychosis, and the benefits of genetic testing. Specifically, themes emerged surrounding how genetic testing may lead to greater genetic knowledge and tailored treatment. CONCLUSIONS: Our results demonstrate that CHR participants generally endorse several precision psychiatry concepts, including how genetic testing may lead to tailored treatment advances. This knowledge may aid development of best communication practices regarding forthcoming genetic advances in diagnosis and treatment among CHR.

Recency and intensification of positive symptoms enhance prediction of conversion to syndromal psychosis in clinical high-risk patients.

BACKGROUND: Early detection and intervention strategies in patients at clinical high-risk (CHR) for syndromal psychosis have the potential to contain the morbidity of schizophrenia and similar conditions. However, research criteria that have relied on severity and number of positive symptoms are limited in their specificity and risk high false-positive rates. Our objective was to examine the degree to which measures of recency of onset or intensification of positive symptoms [a.k.a., new or worsening (NOW) symptoms] contribute to predictive capacity. METHODS: We recruited 109 help-seeking individuals whose symptoms met criteria for the Progression Subtype of the Attenuated Positive Symptom Psychosis-Risk Syndrome defined by the Structured Interview for Psychosis-Risk Syndromes and followed every three months for two years or onset of syndromal psychosis. RESULTS: Forty-one (40.6%) of 101 participants meeting CHR criteria developed a syndromal psychotic disorder [mostly (80.5%) schizophrenia] with half converting within 142 days (interquartile range: 69-410 days). Patients with more NOW symptoms were more likely to convert (converters: 3.63 ± 0.89; non-converters: 2.90 ± 1.27; p = 0.001). Patients with stable attenuated positive symptoms were less likely to convert than those with NOW symptoms. New, but not worsening, symptoms, in isolation, also predicted conversion. CONCLUSIONS: Results suggest that the severity and number of attenuated positive symptoms are less predictive of conversion to syndromal psychosis than the timing of their emergence and intensification. These findings also suggest that the earliest phase of psychotic illness involves a rapid, dynamic process, beginning before the syndromal first episode, with potentially substantial implications for CHR research and understanding the neurobiology of psychosis.