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Published in: Neurological Sciences 10/2020

01-10-2020 | Magnetic Resonance Imaging | Original Article

An APP mutation family exhibiting white matter hyperintensities and cortical calcification in East China

Authors: Yang Yi, Ye Xiaobin, Chen Hui, Zhong Yufa, Zhang Qiaowei, Hu Xingyue, Cai Huaying

Published in: Neurological Sciences | Issue 10/2020

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Abstract

Heterozygous amyloid precursor protein (APP) mutations cause hereditary cerebral amyloid angiopathy (CAA) and autosomal dominant Alzheimer’s disease (AD). This study aimed at reporting an APP mutation and its associated clinical and neuroimaging features. The proband and her family members presented with memory loss, psychiatric, and visual symptoms. Neuroimaging revealed bilateral white matter intensities (WMH) in cranial magnetic resonance imaging (MRI), cortical calcification, and brain atrophy. Next-generation sequencing-based comprehensive gene panel revealed heterozygous missense variant c.2059A>C (p.K687Q) mutation in the APP gene. Co-segregation analysis identified seven family members to be APP mutation carriers while normal neuroimaging features were seen in all family members lacking the APP mutation. WMH and cortical calcification were observed in patients with CAA, including those with the Iowa (D694N) and Italian (E693K) mutations. Further studies should investigate the functional changes associated with the heterozygous APP mutation (K687Q).
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Metadata
Title
An APP mutation family exhibiting white matter hyperintensities and cortical calcification in East China
Authors
Yang Yi
Ye Xiaobin
Chen Hui
Zhong Yufa
Zhang Qiaowei
Hu Xingyue
Cai Huaying
Publication date
01-10-2020
Publisher
Springer International Publishing
Published in
Neurological Sciences / Issue 10/2020
Print ISSN: 1590-1874
Electronic ISSN: 1590-3478
DOI
https://doi.org/10.1007/s10072-020-04342-4

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