The study demonstrated two distinct processes of action on cognition between sertindole and haloperidol and the marked beneficial effects of sertindole, particularly in parameters that are regarded as schizophrenia-related cognitive disturbances.

Sertindole did not increase all-cause mortality, but cardiac mortality was higher and suicide attempts may be lower with sertindole.

The presence of the metabolic syndrome is an important risk factor for cardiovascular disease and diabetes. The short- and long-term metabolic safety of sertindole was compared to that of risperidone in a subset of patients enrolled in the sertindole cohort prospective (SCoP) study, an open randomized study. In 261 randomized patients, there were moderate increases in mean weight, BMI, and waist circumference during treatment with either sertindole or risperidone; after 12 weeks, the increase in weight was 1.3 and 1.1 kg, respectively, and after 36 weeks, it was 2.2 and 2.0 kg, respectively. From baseline to last assessment (up to 60 weeks), weight gains of 1.8 and 1.7 kg for sertindole and risperidone, respectively, were observed. Similar proportions of patients (sertindole: 17% versus risperidone: 16%) had weight increases ≥7% from baseline to last assessment. The mean changes from baseline in triglycerides, total cholesterol, HDL-cholesterol, LDL-cholesterol, plasma glucose and blood pressure were small and not clinically relevant in both treatment groups. No patient in either of the groups developed type 2 diabetes during the study. At last assessment, the prevalence of metabolic syndrome (International Diabetes Federation) was 17% in the sertindole group and 26% in the risperidone group and the incidence of metabolic syndrome was 7% in the sertindole group and 10% in the risperidone group. Treatment with either sertindole or risperidone did not appear to be associated with an increased comparative risk of developing metabolic syndrome. In general, the metabolic effects of sertindole and risperidone were similar.

ClinicalTrials.gov identifier: NCT01942733.

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Naturalistic estimates of drug safety constitute essential information when prescribing antipsychotic medication. In the SCoP study, data were collected prospectively in a randomized, controlled manner and under normal conditions of use. Such a design ensured the high quality of data needed to adequately evaluate the 'real-world' safety of sertindole treatment.

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