Off-label long acting injectable antipsychotics in real-world clinical practice: a cross-sectional analysis of prescriptive patterns from the STAR Network DEPOT study.

INTRODUCTION: Information on the off-label use of Long-Acting Injectable (LAI) antipsychotics in the real world is lacking. In this study, we aimed to identify the sociodemographic and clinical features of patients treated with on- vs off-label LAIs and predictors of off-label First- or Second-Generation Antipsychotic (FGA vs. SGA) LAI choice in everyday clinical practice. METHOD: In a naturalistic national cohort of 449 patients who initiated LAI treatment in the STAR Network Depot Study, two groups were identified based on off- or on-label prescriptions. A multivariate logistic regression analysis was used to test several clinically relevant variables and identify those associated with the choice of FGA vs SGA prescription in the off-label group. RESULTS: SGA LAIs were more commonly prescribed in everyday practice, without significant differences in their on- and off-label use. Approximately 1 in 4 patients received an off-label prescription. In the off-label group, the most frequent diagnoses were bipolar disorder (67.5%) or any personality disorder (23.7%). FGA vs SGA LAI choice was significantly associated with BPRS thought disorder (OR = 1.22, CI95% 1.04 to 1.43, p = 0.015) and hostility/suspiciousness (OR = 0.83, CI95% 0.71 to 0.97, p = 0.017) dimensions. The likelihood of receiving an SGA LAI grew steadily with the increase of the BPRS thought disturbance score. Conversely, a preference towards prescribing an FGA was observed with higher scores at the BPRS hostility/suspiciousness subscale. CONCLUSION: Our study is the first to identify predictors of FGA vs SGA choice in patients treated with off-label LAI antipsychotics. Demographic characteristics, i.e. age, sex, and substance/alcohol use co-morbidities did not appear to influence the choice towards FGAs or SGAs. Despite a lack of evidence, clinicians tend to favour FGA over SGA LAIs in bipolar or personality disorder patients with relevant hostility. Further research is needed to evaluate treatment adherence and clinical effectiveness of these prescriptive patterns.

Brief Psychotic Disorder During the National Lockdown in Italy: An Emerging Clinical Phenomenon of the COVID-19 Pandemic.

The impact of the COVID-19 pandemic on psychosis remains to be established. Here we report 6 cases (3 male and 3 female) of first-episode psychosis (FEP) admitted to our hospital in the second month of national lockdown. All patients underwent routine laboratory tests and a standardized assessment of psychopathology. Hospitalization was required due to the severity of behavioral abnormalities in the context of a full-blown psychosis (the Brief Psychiatric Rating Scale [BPRS] = 75.8 ± 14.6). Blood tests, toxicological urine screening, and brain imaging were unremarkable, with the exception of a mild cortical atrophy in the eldest patient (male, 73 years). All patients were negative for severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) throughout their stay, but 3 presented the somatic delusion of being infected. Of note, all 6 cases had religious/spiritual delusions and hallucinatory contents. Despite a generally advanced age (53.3 ± 15.6), all patients had a negative psychiatric history. Rapid discharge (length of stay = 13.8 ± 6.9) with remission of symptoms (BPRS = 27.5 ± 3.1) and satisfactory insight were possible after relatively low-dose antipsychotic treatment (Olanzapine-equivalents = 10.1 ± 5.1 mg). Brief psychotic disorder/acute and transient psychotic disorder diagnoses were confirmed during follow-up visits in all 6 cases. The youngest patient (female, 23 years) also satisfied the available criteria for brief limited intermittent psychotic symptoms. Although research on larger populations is necessary, our preliminary observation suggests that intense psychosocial stress associated with a novel, potentially fatal disease and national lockdown restrictions might be a trigger for FEP.

Kynurenine pathway metabolites selectively associate with impaired associative memory function in depression.

Activation of the kynurenine pathway (KP), an important downstream effect of inflammation, is a driver of depression and neurodegeneration. Damage from the end product of KP activation, quinolinic acid, may be responsible specifically for impairment in hippocampally mediated memory function, among its effects. We hypothesized that associative memory - the ability to recall relationships between items - would be sensitive to KP activation because it is heavily dependent on the hippocampus. We tested a sample of N â€‹= â€‹80 adults with unmedicated depression using a face-name task which assesses the ability to recognize, as well as to recall correct pairings, of faces and names. Plasma samples were analyzed for KP metabolites - tryptophan (TRP), kynurenine (KYN), quinolinic acid (QUIN) and kynurenic acid (KYNA). Using linear models we examined whether the KYN/TRP and QUIN/KYNA ratios predicted performance of recognition memory and associative memory, accounting for item type and the number of learning exposures to items (1 vs. 3). We found that for rearranged items viewed three times, associative memory performance was inversely related to the QUIN/KYNA ratio (p â€‹= â€‹0.01, p â€‹= â€‹0.001 adjusted for age, gender and race/ethnicity). Recognition memory was not associated with KP activation. The results support our hypothesis that KP activation most sensitively impacts hippocampally mediated memory function.