Subjective Cognitive Impairment Cohort (SCIENCe): study design and first results

Rosalinde E R Slot, Sander C J Verfaillie, Jozefien M Overbeek, Tessa Timmers, Linda M P Wesselman, Charlotte E Teunissen, Annemiek Dols, Femke H Bouwman, Niels D Prins, Frederik Barkhof, Adriaan A Lammertsma, Bart N M Van Berckel, Philip Scheltens, Sietske A M Sikkes, Wiesje M Van der Flier

Research output: Contribution to journalArticleAcademicpeer-review

Abstract

BACKGROUND: We aimed to describe the Subjective Cognitive Impairment Cohort (SCIENCe) study design, to cross-sectionally describe participant characteristics, and to evaluate the SCD-plus criteria.

METHODS: The SCIENCe is a prospective cohort study of subjective cognitive decline (SCD) patients. Participants undergo extensive assessment, including cerebrospinal fluid collection and optional amyloid positron emission tomography scan, with annual follow-up. The primary outcome measure is clinical progression.

RESULTS: Cross-sectional evaluation of the first 151 participants (age 64 ± 8, 44% female, Mini-Mental State Examination 29 ± 2) showed that 28 (25%) had preclinical Alzheimer's disease (AD) (amyloid status available n = 114 (75%)), 58 (38%) had subthreshold psychiatry, and 65 (43%) had neither. More severe subjective complaints were associated with worse objective performance. The SCD-plus criteria age ≥ 60 (OR 7.7 (95% CI 1.7-38.9)) and apolipoprotein E (genotype) e4 (OR 4.8 (95% CI 1.6-15.0)) were associated with preclinical AD.

CONCLUSIONS: The SCIENCe study confirms that SCD is a heterogeneous group, with preclinical AD and subthreshold psychiatric features. We found a number of SCD-plus criteria to be associated with preclinical AD. Further inclusion and follow-up will address important questions related to SCD.

Original languageEnglish
Article number76
Pages (from-to)76
JournalAlzheimer's Research & Therapy
Volume10
Issue number1
DOIs
Publication statusPublished - 7 Aug 2018
Externally publishedYes

Keywords

  • Aged
  • Amyloid beta-Peptides/cerebrospinal fluid
  • Amyloid/metabolism
  • Apolipoprotein E4/genetics
  • Cognitive Dysfunction/complications
  • Cohort Studies
  • Cross-Sectional Studies
  • Disease Progression
  • Female
  • Humans
  • Magnetic Resonance Imaging
  • Male
  • Mental Disorders/etiology
  • Mental Status and Dementia Tests
  • Middle Aged
  • Neuropsychological Tests
  • Peptide Fragments/cerebrospinal fluid
  • Positron-Emission Tomography
  • Research Design
  • Surveys and Questionnaires
  • tau Proteins/cerebrospinal fluid

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