Dataset Information

NGLY1 Deficiency: A Rare Newly Described Condition with a Typical Presentation.

ABSTRACT: NGLY1 deficiency is the first recognized autosomal recessive disorder of N-linked deglycosylation (NGLY1-CDDG). This severe multisystemic disease is still poorly known and, to date, most cases have been diagnosed through whole exome or genome sequencing. The aim of this study is to provide the clinical, biochemical and molecular description of the first NGLY1-CDDG patient from France along with a literature review. The index case presented with developmental delay, acquired microcephaly, hypotonia, alacrimia, feeding difficulty, and dysmorphic features. Given the complex clinical picture and the multisystemic involvement, a trio-based exome sequencing was conducted and urine oligosaccharides were assessed using mass spectrometry. The exome sequencing revealed a novel variant in the NGLY1 gene in a homozygous state. NGLY1 deficiency was confirmed by the identification of the Neu5Ac1Hex1GlcNAc1-Asn oligosaccharide in the urine of the patient. Literature review revealed the association of some key clinical and biological features such as global developmental delay-hypertransaminasemia, movement disorders, feeding difficulties and alacrima/hypolacrima.

SUBMITTER: Dabaj I

PROVIDER: S-EPMC7996810 | biostudies-literature | 2021 Feb

REPOSITORIES: biostudies-literature

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NGLY1 Deficiency: A Rare Newly Described Condition with a Typical Presentation.

Dabaj Ivana I Sudrié-Arnaud Bénédicte B Lecoquierre François F Raymond Kimiyo K Ducatez Franklin F Guerrot Anne-Marie AM Snanoudj Sarah S Coutant Sophie S Saugier-Veber Pascale P Marret Stéphane S Nicolas Gaël G Tebani Abdellah A Bekri Soumeya S

Life (Basel, Switzerland) 20210227 3

NGLY1 deficiency is the first recognized autosomal recessive disorder of N-linked deglycosylation (NGLY1-CDDG). This severe multisystemic disease is still poorly known and, to date, most cases have been diagnosed through whole exome or genome sequencing. The aim of this study is to provide the clinical, biochemical and molecular description of the first NGLY1-CDDG patient from France along with a literature review. The index case presented with developmental delay, acquired microcephaly, hypoton ...[more]

PMID: 33673403

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NGLY1 Deficiency: A Rare Newly Described Condition with a Typical Presentation.

Publications

NGLY1 Deficiency: A Rare Newly Described Condition with a Typical Presentation.

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