Pathogenic CWF19L1 variants as a novel cause of autosomal recessive cerebellar ataxia and atrophy

Minh Nguyen, Iris B W Boesten, Debby M E I Hellebrekers, Jo Vanoevelen, Rick Kamps, Bart de Koning, Irenaeus F M de Coo, Mike Gerards, Hubert J M Smeets*

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review


Autosomal recessive cerebellar ataxia (ARCA) is a group of neurological disorders characterized by degeneration or abnormal development of the cerebellum and spinal cord. ARCA is clinically and genetically highly heterogeneous, with over 20 genes involved. Exome sequencing of a girl with ARCA from non-consanguineous Dutch parents revealed two pathogenic variants c.37G>C; p.D13H and c.946A>T; p.K316* in CWF19L1, a gene with an unknown function, recently reported to cause ARCA in a Turkish family. Sanger sequencing showed that the c.37G>C variant was inherited from the father and the c.946A>T variant from the mother. Pathogenicity was based on the damaging effect on protein function as the c.37G>C variant changed the highly conserved, negatively charged aspartic acid to the positively charged histidine and the c.946A>T variant introduced a premature stop codon. In addition, 27 patients with ARCA were tested for pathogenic variants in CWF19L1, however, no pathogenic variants were identified. Our data confirm CWF19L1 as a novel but rare gene causing ARCA.

Original languageEnglish
Pages (from-to)619-622
Number of pages4
JournalEuropean Journal of Human Genetics
Issue number4
Publication statusPublished - Apr 2016



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