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. 2025 Mar 5;272(3):246.
doi: 10.1007/s00415-024-12808-0.

Heterogeneity of cognitive progression and clinical predictors in Parkinson's disease-subjective cognitive decline

Collaborators, Affiliations

Heterogeneity of cognitive progression and clinical predictors in Parkinson's disease-subjective cognitive decline

Jon Rodríguez-Antigüedad et al. J Neurol. .

Erratum in

  • Correction: Heterogeneity of cognitive progression and clinical predictors in Parkinson's disease-subjective cognitive decline.
    Rodríguez-Antigüedad J, Martínez-Horta S, Puig-Davi A, Horta-Barba A, Pagonabarraga J, de Deus Fonticoba T, Jesús S, Cosgaya M, García Caldentey J, Ávila-Rivera MA, Caballol N, Legarda I, Hernández Vara J, Cabo I, López Manzanares L, González Aramburu I, Gómez Mayordomo V, González Ardura J, Dotor García-Soto J, Borrué C, Solano Vila B, Álvarez Sauco M, Vela L, Escalante S, Cubo E, Mendoza Z, Pareés I, Sánchez Alonso P, Alonso Losada MG, López Ariztegui N, Gastón I, Ruíz Martínez J, Buongiorno MT, Ordás C, Valero C, Puente V, Kurtis M, Blázquez Estrada M, Martínez-Martín P, Mir P, Santos-García D; COPPADIS Study Group; Kulisevsky J. Rodríguez-Antigüedad J, et al. J Neurol. 2025 Apr 26;272(5):362. doi: 10.1007/s00415-025-13077-1. J Neurol. 2025. PMID: 40285930 Free PMC article. No abstract available.

Abstract

Background: Parkinson’s Disease (PD)-associated subjective cognitive decline (PDSCD) is defined as cognitive complaints without objective cognitive impairment. Based on most studies, it is associated with a greater risk of cognitive decline and may represent a prodromal stage of cognitive impairment.

Methods: The main objectives are to identify cognitive progression patterns and clinical predictors of worse cognitive decline within a large PD-SCD cohort with a 4-year followup. All patients belong to the prospective observational multicenter study COPPADIS.

Results: A total of 198 PD-SCD subjects were analyzed. Mean age was 60.9, mean disease duration 5.2, and mean PD-Cognitive Rating Scale (PD-CRS) 97.6. Subjects were classified as Progressors if their Reliable Change Index was ≤ − 1.64 at year 4, and as non-Progressors if it was > − 1.64 (− 1.64 corresponded to − 16 on the PD-CRS). Progressors had significantly higher age, Movement Disorders Society-Unified PD Rating Scale (MDS-UPDRS) III, levodopa equivalent daily-dose, Non-Motor Symptom Scale total score, memory-related cognitive complaints, and prevalence of REM-sleep behavior disorder (RBD) at baseline. A linear mixed-effects model showed divergent cognitive trajectories between Progressors and non-Progressors (estimate = − 26.8; p < 0.001), with no differences in motor trajectories. In the binary regression model, age (OR = 1.09; p = 0.001), MDS-UPDRS III (OR = 1.05, p = 0.008), and RBD (OR = 2.55, p = 0.010) at baseline were independent predictors of cognitive progression.

Conclusions: Subjects with PD-SCD do not consistently show cognitive decline, but rather exhibit a heterogeneous progression. Age, MDS-UPDRS III and RBD significantly increase the risk of a more aggressive cognitive phenotype. Future research on biomarkers will help explore additional cognitive predictors in PD-SCD.

Keywords: Cognitive complaints; Cognitive decline; PD-Subjective Cognitive Decline; Parkinson’s Disease; REM-sleep behavior disorder.

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Conflict of interest statement

Declarations. Conflicts of interest: On behalf of all authors, the corresponding author states that there is no conflict of interest.

Figures

Fig. 1
Fig. 1
Predictions of the LME model for the longitudinal trajectory of PD–CRS (left) and MDS–UPDRS III (right) in PD–SCD progressors and non-progressors

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