Skip to main content
Top
Published in: BMC Medical Genetics 1/2016

Open Access 01-12-2016 | Case report

Intronic PRRT2 mutation generates novel splice acceptor site and causes paroxysmal kinesigenic dyskinesia with infantile convulsions (PKD/IC) in a three generation family

Authors: Axel Weber, Jonas Kreth, Ulrich Müller

Published in: BMC Medical Genetics | Issue 1/2016

Login to get access

Abstract

Background

Mutations in PRRT2 cause autosomal dominant paroxysmal kinesigenic dyskinesia with infantile convulsions (PKD/IC).

Case presentation

A previously not recognized intronic PRRT2 mutation (c.880-35G > A; p.S294Lfs*29) was found in an 18 month old girl with IC and in her mother with classical presentation of PKD. The mutation results in a novel splice acceptor site in intron 2 of PRRT2. Due to frameshift and a subsequent premature stop-codon the resulting transcript appears to render the PRRT2 protein non/dysfunctional and is the likely cause of disease in this family.

Conclusion

Our findings expand the mutational spectrum of this disease.
Literature
1.
go back to reference Wang JL, Cao L, Li XH, et al. Identification of PRRT2 as the causative gene of paroxysmal kinesigenic dyskinesias. Brain. 2011;134:3493–501.CrossRefPubMed Wang JL, Cao L, Li XH, et al. Identification of PRRT2 as the causative gene of paroxysmal kinesigenic dyskinesias. Brain. 2011;134:3493–501.CrossRefPubMed
2.
go back to reference Chen W-J, Lin Y, Xiong Z-Q, et al. Exome sequencing identifies truncating mutations in PRRT2 that cause paroxysmal kinesigenic dyskinesia. Nat Genet. 2011;43:1252–5.CrossRefPubMed Chen W-J, Lin Y, Xiong Z-Q, et al. Exome sequencing identifies truncating mutations in PRRT2 that cause paroxysmal kinesigenic dyskinesia. Nat Genet. 2011;43:1252–5.CrossRefPubMed
3.
go back to reference Lee HY, Huang Y, Bruneau N, et al. Mutations in the gene PRRT2 cause paroxysmal kinesigenic dyskinesia with infantile convulsions. Cell Rep. 2012;1:2–12.CrossRefPubMedPubMedCentral Lee HY, Huang Y, Bruneau N, et al. Mutations in the gene PRRT2 cause paroxysmal kinesigenic dyskinesia with infantile convulsions. Cell Rep. 2012;1:2–12.CrossRefPubMedPubMedCentral
4.
go back to reference Heron SE, Dibbens LM. Role of PRRT2 in common paroxysmal neurological disorders: a gene with remarkable pleiotropy. J Med Genet. 2013;50(3):133–9.CrossRefPubMed Heron SE, Dibbens LM. Role of PRRT2 in common paroxysmal neurological disorders: a gene with remarkable pleiotropy. J Med Genet. 2013;50(3):133–9.CrossRefPubMed
5.
go back to reference Weber A, Köhler A, Hahn A, Neubauer B, Müller U. Benign infantile convulsions (IC) and subsequent paroxysmal kinesigenic dyskinesia (PKD) in a patient with 16p11.2 microdeletion syndrome. Neurogenetics. 2013;14(3–4):251–3.CrossRefPubMed Weber A, Köhler A, Hahn A, Neubauer B, Müller U. Benign infantile convulsions (IC) and subsequent paroxysmal kinesigenic dyskinesia (PKD) in a patient with 16p11.2 microdeletion syndrome. Neurogenetics. 2013;14(3–4):251–3.CrossRefPubMed
6.
go back to reference Termsarasab P, Yang AC, Reiner J, Mei H, Scott SA, Frucht SJ. Paroxysmal kinesigenic dyskinesia caused by 16p11.2 microdeletion. Tremor Other Hyperkinet Mov (N Y). 2014;4:274. Termsarasab P, Yang AC, Reiner J, Mei H, Scott SA, Frucht SJ. Paroxysmal kinesigenic dyskinesia caused by 16p11.2 microdeletion. Tremor Other Hyperkinet Mov (N Y). 2014;4:274.
7.
go back to reference Wang M, Marín A. Characterization and prediction of alternative splice sites. Gene. 2006;366:219–27.CrossRefPubMed Wang M, Marín A. Characterization and prediction of alternative splice sites. Gene. 2006;366:219–27.CrossRefPubMed
8.
go back to reference Nobile C, Striano P. PRRT2: a major cause of infantile epilepsy and other paroxysmal disorders of childhood. Prog Brain Res. 2014;213:141–58.CrossRefPubMed Nobile C, Striano P. PRRT2: a major cause of infantile epilepsy and other paroxysmal disorders of childhood. Prog Brain Res. 2014;213:141–58.CrossRefPubMed
Metadata
Title
Intronic PRRT2 mutation generates novel splice acceptor site and causes paroxysmal kinesigenic dyskinesia with infantile convulsions (PKD/IC) in a three generation family
Authors
Axel Weber
Jonas Kreth
Ulrich Müller
Publication date
01-12-2016
Publisher
BioMed Central
Published in
BMC Medical Genetics / Issue 1/2016
Electronic ISSN: 1471-2350
DOI
https://doi.org/10.1186/s12881-016-0281-7

Other articles of this Issue 1/2016

BMC Medical Genetics 1/2016 Go to the issue