Congenital Neuronal Ceroid Lipofuscinosis with a Novel CTSD Gene Mutation: A Rare Cause of Neonatal-Onset Neurodegenerative Disorder

K. Varvagiannis; S. Hanquinet; M. H. Billieux; R. De Luca; P. Rimensberger; M. Lidgren; M. Guipponi; P. Makrythanasis; J. L. Blouin; S. E. Antonarakis; R. Steinfeld; I. Kern; A. Poretti; J. Fluss; S. Fokstuen

doi:10.1055/s-0037-1613681

Neuropediatrics, Table of Contents

Neuropediatrics 2018; 49(02): 150-153
DOI: 10.1055/s-0037-1613681

Short Communication

Georg Thieme Verlag KG Stuttgart · New York

Congenital Neuronal Ceroid Lipofuscinosis with a Novel CTSD Gene Mutation: A Rare Cause of Neonatal-Onset Neurodegenerative Disorder

K. Varvagiannis

¹Service of Genetic Medicine, University Hospitals of Geneva, Geneva, Switzerland

,

S. Hanquinet

²Pediatric Radiology Unit, Department of Radiology, University Hospitals of Geneva, Geneva, Switzerland

,

M. H. Billieux

³Department of Gynecology and Obstetrics, University Hospitals of Geneva, Geneva, Switzerland

,

R. De Luca

⁴Service of Neonatology and Pediatric Intensive Care, Department of Pediatrics, University Hospitals of Geneva, Geneva, Switzerland

,

P. Rimensberger

⁴Service of Neonatology and Pediatric Intensive Care, Department of Pediatrics, University Hospitals of Geneva, Geneva, Switzerland

,

M. Lidgren

¹Service of Genetic Medicine, University Hospitals of Geneva, Geneva, Switzerland

,

M. Guipponi

¹Service of Genetic Medicine, University Hospitals of Geneva, Geneva, Switzerland

,

P. Makrythanasis

¹Service of Genetic Medicine, University Hospitals of Geneva, Geneva, Switzerland

⁵Department of Genetic Medicine and Development, University of Geneva, Geneva, Switzerland

,

J. L. Blouin

¹Service of Genetic Medicine, University Hospitals of Geneva, Geneva, Switzerland

⁵Department of Genetic Medicine and Development, University of Geneva, Geneva, Switzerland

,

S. E. Antonarakis

¹Service of Genetic Medicine, University Hospitals of Geneva, Geneva, Switzerland

⁵Department of Genetic Medicine and Development, University of Geneva, Geneva, Switzerland

,

R. Steinfeld

⁶Department of Pediatrics and Pediatric Neurology, University Medical Center Göttingen, Göttingen, Germany

,

I. Kern

⁷Pediatric Nephrology and Metabolism Unit, Pediatric Department, University Hospitals of Geneva, Geneva, Switzerland

,

A. Poretti^†

⁸Section of Pediatric Neuroradiology, Division of Pediatric Radiology, The Russell H. Morgan Department of Radiology and Radiological Science, Charlotte R. Bloomberg Children's Center, The Johns Hopkins School of Medicine, Baltimore, Maryland, United States

⁹Department of Neurogenetics, Kennedy Krieger Institute, Baltimore, Maryland, United States

,

J. Fluss^*

¹⁰Pediatric Neurology Unit, Pediatric Subspecialties Service, University Hospitals of Geneva, Geneva, Switzerland

,

S. Fokstuen^*

¹Service of Genetic Medicine, University Hospitals of Geneva, Geneva, Switzerland

› Author Affiliations

Abstract

Neuronal ceroid lipofuscinoses represent a heterogeneous group of early onset neurodegenerative disorders that are characterized by progressive cognitive and motor function decline, visual loss, and epilepsy. The age of onset has been historically used for the phenotypic classification of this group of disorders, but their molecular genetic delineation has now enabled a better characterization, demonstrating significant genetic heterogeneity even among individuals with a similar phenotype. The rare Congenital Neuronal Ceroid Lipofuscinosis (CLN10) caused by mutations in the CTSD gene encoding for cathepsin D is associated with a dramatic presentation with onset before or around birth. We report on a female born to consanguineous parents who presented at birth with severe neonatal encephalopathy with massive cerebral and cerebellar shrinking on magnetic resonance imaging. Whole exome sequencing with targeted bioinformatic analysis of a panel of genes associated with prenatal/perinatal onset of neurodegenerative disease was performed and revealed the presence of a novel homozygous in-frame deletion in CTSD. Additional functional studies further confirmed the pathogenic character of this variant and established the diagnosis of CLN10 in the patient.

Keywords

congenital neuronal ceroid lipofuscinosis - CLN10 - CTSD - cathepsin D - targeted exome sequencing

Full Text

References

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