Longitudinal cognitive performance of participants with sporadic early onset Alzheimer's disease from LEADS.
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Hammers Dustin B, Eloyan Ani, Taurone Alexander, Thangarajah Maryanne, Gao Sujuan, Beckett Laurel, Polsinelli Angelina J, Kirby Kala, Dage Jeffrey L, Nudelman Kelly, Aisen Paul, Reman Rema, La Joie Renaud, Lagarde Julien, Atri Alireza, Clark David, Day Gregory S, Duara Ranjan, Graff-Radford Neill R, Grant Ian, Honig Lawrence S, Johnson Erik C B, Jones David T, Masdeu Joseph C, Mendez Mario F, Womack Kyle, Musiek Erik, Onyike Chiadi U, Riddle Meghan, Rogalski Emily, Salloway Steven, Sha Sharon J, Turner Raymond Scott, Wingo Thomas S, Wolk David A, Carrillo Maria C, Rabinovici Gil D, Dickerson Bradford C, Apostolova Liana G, LEADS Consortium
Аннотация
METHODS: Data from 307 cognitively normal (CN) volunteer participants and those with amyloid-positive EOAD or amyloid-negative cognitive impairment (EOnonAD) were compared. Cognitive trajectories across a comprehensive cognitive battery spanning 42 months were examined using mixed-effects modeling.
RESULTS: The EOAD group displayed worse cognition at baseline relative to EOnonAD and CN groups, and more aggressive declines in cognition over time. The largest effects were observed on measures of executive functioning domains, while memory declines were blunted in EOAD.
DISCUSSION: EOAD declined 2-4× faster than EOnonAD, and EOAD pathology is not restricted to memory networks. Early identification of deficits is critical to ensure that individuals with sporadic EOAD can be considered for treatment using disease-modifying medications.
HIGHLIGHTS: Represents the most comprehensive longitudinal characterization of sporadic EOAD to date. The trajectory of cognitive declines was steep for EOAD participants and worse than for other groups. Executive functioning measures exhibited the greatest declines over time in EOAD.