Primary familial brain calcifications: Genetic and clinical update

Ana Westenberger, Alexander Balck, Christine Klein*

*Corresponding author for this work
14 Citations (Scopus)

Abstract

Purpose of review In the last 7 years, changes in five genes [SLC20A2, PDGFRB, PDGFB, XPR1, and MYORG] have been implicated in the pathogenesis of primary familial brain calcification (PFBC), allowing for genetic delineation of this phenotypically complex neurodegenerative disorder. This review explores how the ensuing plethora of reported PFBC patients and their disease-causing variants improved our understanding of disease, pathogenesis, clinical manifestation, and penetrance. Recent findings In PFBC patients, pathogenic changes have been most frequently described in SLC20A2, accounting for approximately the same number of patients as the variants in the other four PFBC genes combined. There is no appreciable relationship between any combination of the following three variables: the type of disease-causing change, the pattern or extent of calcifications, and the presence or nature of clinical manifestation in PFBC patients. Nevertheless, elucidation of underlying genetic factors provided important recent insights into the pathogenic mechanisms of PFBC, which collectively point toward a compromised neurovascular unit. Summary The ongoing clinical and molecular research increases our understanding of PFBC facilitating diagnosis and identifying potential therapeutic targets for this multifaceted and likely underdiagnosed condition.

Original languageEnglish
JournalCurrent Opinion in Neurology
Volume32
Issue number4
Pages (from-to)571-578
Number of pages8
ISSN1350-7540
DOIs
Publication statusPublished - 01.08.2019

Research Areas and Centers

  • Research Area: Medical Genetics

DFG Research Classification Scheme

  • 206-02 Molecular Biology and Physiology of Nerve and Glial Cells

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