Biomarkers Differentiating Dementia with Lewy Bodies from Other Dementias: A Meta-Analysis

Aki Mishima, Takashi Nihashi, Yoshio Ando, Hisashi Kawai, Takashi Kato, Kengo Ito, Teruhiko Terasawa

研究成果: Article査読

2 被引用数 (Scopus)

抄録

Background: Several nuclear imaging and cerebrospinal fluid (CSF) biomarkers are under investigation, aimed at facilitating the differential diagnosis of dementias. Objective: To quantitatively synthesize data on test performance in differentiating dementia with Lewy bodies (DLB) from other dementias. Methods: We searched PubMed (January 2000-March 2015) for English-language publications that assessed a selected set of five imaging and three CSF biomarkers for this purpose. We meta-analyzed measures of agreement between biomarker results and clinical diagnosis. Results: Forty-five publications were eligible. The majority of evidence was based on studies that enrolled representative disease populations. For differentiating between DLB and Alzheimer's disease (AD) or other dementias, metaiodobenzylguanidine scintigraphy and dopamine transporter (DAT) single photon emission computed tomography (SPECT) showed, respectively, excellent (summary kappa = 0.85; 95% confidence interval [95%CI], 0.74-0.96) and good (summary kappa = 0.71; 95%CI, 0.43-0.99) agreement. Metaiodobenzylguanidine scintigraphy appeared superior to fluorodeoxyglucose-positron emission tomography (summary kappa = 0.53; 95%CI, 0.36-0.69) and cerebral blood flow SPECT (summary kappa = 0.40; 95%CI, 0.33-0.47). For differentiating DLB from AD, CSF t-tau levels (summary kappa = 0.68; 95%CI, 0.55-0.82) performed comparably to metaiodobenzylguanidine scintigraphy and DAT SPECT. Sparse direct comparative evidence failed to corroborate these indirect comparisons. Conclusion: Metaiodobenzylguanidine scintigraphy and DAT SPECT are highly concordant with clinical diagnosis in differentiating DLB from other dementias. However, given the limitations in the study design, the applicability of these results to real-world differential diagnosis remains unclear. Prospective studies targeting patients with atypical presentations that adopt gold standard tests would reliably estimate the true test performance of these promising biomarkers.

本文言語English
ページ(範囲)161-174
ページ数14
ジャーナルJournal of Alzheimer's Disease
50
1
DOI
出版ステータスPublished - 01-01-2016

All Science Journal Classification (ASJC) codes

  • 神経科学(全般)
  • 臨床心理学
  • 老年医学
  • 精神医学および精神衛生

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