Supplementary Material for: Souvenaid Reduces Behavioral Deficits and Improves Social Cognition Skills in Frontotemporal Dementia: A Proof-of-Concept Study

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Background: Souvenaid™ is a nutraceutical compound thought to positively enhance synaptic function. In line with this mechanism of action, Souvenaid™ has been shown to improve cognitive function in subjects with mild Alzheimer's disease in randomized clinical trials. To date, however, the potential of Souvenaid™ to improve cognitive functioning in subjects with other neurodegenerative conditions also characterized by synaptic loss has not been explored. Objective: To evaluate the impact of Souvenaid™ on executive functions, social cognition and behavioral disturbances in subjects with the behavioral variant of frontotemporal dementia (bv-FTD). Methods: Twenty-six subjects with bv-FTD were enrolled in the study and randomized to Souvenaid™ (125 ml/day) or placebo groups. After 12 weeks, subjects were switched between the two groups. All subjects, blinded to treatment, underwent clinical and cognitive evaluations at enrollment, after 12 weeks and after 24 weeks. Results: Treatment with Souvenaid™ was associated with a significant reduction of behavioral symptoms and an increase in Theory of Mind skills compared to placebo, which both returned to baseline when Souvenaid™ was discontinued. Souvenaid™ did not have an effect on executive functions. Conclusions: Our results provide evidence of the potential of Souvenaid™ therapy for the treatment of behavioral disturbances and social cognition skills in FTD.

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