RT Journal Article T1 Cognitive profile in multiple sclerosis and post-COVID condition: a comparative study using a unified taxonomy A1 Delgado-Alonso, Cristina A1 Delgado Álvarez, Alfonso A1 Díez-Cirarda, María A1 Oliver-Mas, Silvia A1 Cuevas, Constanza A1 Montero-Escribano, Paloma A1 Ramos-Leví, Ana Maria A1 Gil-Moreno, María José A1 López-Carbonero, Juan Ignacio A1 Hermann, Bruce P. A1 Matías-Guiu Guía, Jorge A1 Matias-Guiu, Jordi A. AB Post-COVID condition (PCC) and multiple sclerosis (MS) share some clinical and demographic features, including cognitive symptoms and fatigue. Some pathophysiological mechanisms well-known in MS, such as autoimmunity, neuroinflammation and myelin damage, have also been implicated in PCC. In this study, we aimed to compare the cognitive phenotypes of two large cohorts of patients with PCC and MS, and to evaluate the relationship between fatigue and cognitive performance. Cross-sectional study including 218 patients with PCC and 218 with MS matched by age, sex, and years of education. Patients were evaluated with a comprehensive neuropsychological protocol and were categorized according to the International Classification of Cognitive Disorders system. Fatigue and depression were also assessed. Cognitive profiles of PCC and MS largely overlapped, with a greater impairment in episodic memory in MS, but with small effect sizes. The most salient deficits in both disorders were in attention and processing speed. The severity of fatigue was greater in patients with PCC. Still, the correlations between fatigue severity and neuropsychological tests were more prominent in the case of MS. There were no differences in the severity of depression among groups. Our study found similar cognitive profiles in PCC and MS. Fatigue was more severe in PCC, but was more associated with cognitive performance in MS. Further comparative studies addressing the mechanisms related to cognitive dysfunction and fatigue may be of interest to advance the knowledge of these disorders and develop new therapies. PB Springer Nature SN 2045-2322 YR 2024 FD 2024-04 LK https://hdl.handle.net/20.500.14352/103886 UL https://hdl.handle.net/20.500.14352/103886 LA eng NO Delgado-Alonso, C., Delgado-Alvarez, A., Díez-Cirarda, M. et al. Cognitive profile in multiple sclerosis and post-COVID condition: a comparative study using a unified taxonomy. Sci Rep 14, 9806 (2024). https://doi.org/10.1038/s41598-024-60368-0 NO Comunidad de Madrid NO Instituto de Salud Carlos III NO European Commission DS Docta Complutense RD 9 abr 2025