Concurrent Cross-Sectional and Longitudinal Analyses of Multivariate White Matter Profiles and Clinical Functioning in Pre-Diagnosis Huntington Disease

Jennifer A. Ciarochi, Hans J. Johnson, Vince Daniel Calhoun, Jingyu Liu, Flor A. Espinoza, Henry J. Bockholt, Maria Misiura, Arvind Caprihan, Sergey Plis, Jane S. Paulsen, Jessica A. Turner

Research output: Contribution to journalReview article

Abstract

Background: Gray matter (GM) atrophy in the striatum and across the brain is a consistently reported feature of the Huntington Disease (HD) prodrome. More recently, widespread prodromal white matter (WM) degradation has also been detected. However, longitudinal WM studies are limited and conflicting, and most analyses comparing WM and clinical functioning have also been cross-sectional. Objective: We simultaneously assessed changes in WM and cognitive and motor functioning at various prodromal HD stages. Methods: Data from 1,336 (1,047 prodromal, 289 control) PREDICT-HD participants were analyzed (3,700 sessions). MRI images were used to create GM, WM, and cerebrospinal fluid probability maps. Using source-based morphometry, independent component analysis was applied to WM probability maps to extract covarying spatial patterns and their subject profiles. WM profiles were analyzed in two sets of linear mixed model (LMM) analyses: one to compare WM profiles across groups cross-sectionally and longitudinally, and one to concurrently compare WM profiles and clinical variables cross-sectionally and longitudinally within each group. Results: Findings illustrate widespread prodromal changes in GM-adjacent-WM, with premotor, supplementary motor, middle frontal and striatal changes early in the prodrome that subsequently extend sub-gyrally with progression. Motor functioning agreed most with WM until the near-onset prodromal stage, when Stroop interference was the best WM indicator. Across groups, Trail-Making Test part A outperformed other cognitive variables in its similarity to WM, particularly crosssectionally. Conclusions: Results suggest that distinct regions coincide with cognitive compared to motor functioning. Furthermore, at different prodromal stages, distinct regions appear to align best with clinical functioning. Thus, the informativeness of clinical measures may vary according to the type of data available (cross-sectional or longitudinal) as well as age and CAG-number.

Original languageEnglish (US)
Pages (from-to)199-219
Number of pages21
JournalJournal of Huntington's Disease
Volume8
Issue number2
DOIs
Publication statusPublished - Jan 1 2019
Externally publishedYes

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Keywords

  • Cognition
  • Magnetic resonance imaging
  • Movement
  • Multivariate analysis
  • Prodromal symptoms
  • White matter

ASJC Scopus subject areas

  • Clinical Neurology
  • Cellular and Molecular Neuroscience

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