ALG3-CDG: a patient with novel variants and review of the
genetic and ophthalmic findings

J 2021

ALG3-CDG: a patient with novel variants and review of the genetic and ophthalmic findings

FAROLFI, Martina, Anna CECHOVA, Nina ONDRUSKOVA, Jana ZÍDKOVÁ, Bohdan KOUSAL et. al.

Basic information

Original name

ALG3-CDG: a patient with novel variants and review of the genetic and ophthalmic findings

Authors

FAROLFI, Martina (203 Czech Republic), Anna CECHOVA (203 Czech Republic), Nina ONDRUSKOVA (203 Czech Republic), Jana ZÍDKOVÁ (203 Czech Republic, belonging to the institution), Bohdan KOUSAL (203 Czech Republic), Hana HANSIKOVA (203 Czech Republic), Tomas HONZIK (203 Czech Republic) and Petra LISKOVA (203 Czech Republic)

Edition

BMC OPHTHALMOLOGY, LONDON, BMC, 2021, 1471-2415

Other information

Language

English

Type of outcome

Článek v odborném periodiku

Field of Study

30207 Ophthalmology

Country of publisher

United Kingdom of Great Britain and Northern Ireland

Confidentiality degree

není předmětem státního či obchodního tajemství

References:

URL

Impact factor

Impact factor: 2.086

RIV identification code

RIV/00216224:14110/21:00123482

Organization unit

Faculty of Medicine

DOI

http://dx.doi.org/10.1186/s12886-021-02013-2

UT WoS

000660890800001

Keywords in English

N-linked glycosylation; Congenital disorder of glycosylation; ALG3-CDG; Optic nerve hypoplasia; Arthrogryposis; Transferrin isoelectric focusing; Novel mutation

Abstract

V originále

BackgroundALG3-CDG is a rare autosomal recessive disease. It is characterized by deficiency of alpha-1,3-mannosyltransferase caused by pathogenic variants in the ALG3 gene. Patients manifest with severe neurologic, cardiac, musculoskeletal and ophthalmic phenotype in combination with dysmorphic features, and almost half of them die before or during the neonatal period.Case presentationA 23 months-old girl presented with severe developmental delay, epilepsy, cortical atrophy, cerebellar vermis hypoplasia and ocular impairment. Facial dysmorphism, clubfeet and multiple joint contractures were observed already at birth. Transferrin isoelectric focusing revealed a type 1 pattern. Funduscopy showed hypopigmentation and optic disc pallor. Profound retinal ganglion cell loss and inner retinal layer thinning was documented on spectral-domain optical coherence tomography imaging. The presence of optic nerve hypoplasia was also supported by magnetic resonance imaging. A gene panel based next-generation sequencing and subsequent Sanger sequencing identified compound heterozygosity for two novel variants c.116del p.(Pro39Argfs*40) and c.1060 C>T p.(Arg354Cys) in ALG3.ConclusionsOur study expands the spectrum of pathogenic variants identified in ALG3. Thirty-three variants in 43 subjects with ALG3-CDG have been reported. Literature review shows that visual impairment in ALG3-CDG is most commonly linked to optic nerve hypoplasia.

Citovat

FAROLFI, Martina, Anna CECHOVA, Nina ONDRUSKOVA, Jana ZÍDKOVÁ, Bohdan KOUSAL, Hana HANSIKOVA, Tomas HONZIK and Petra LISKOVA. ALG3-CDG: a patient with novel variants and review of the genetic and ophthalmic findings. BMC OPHTHALMOLOGY. LONDON: BMC, 2021, vol. 21, No 1, p. 1-7. ISSN 1471-2415. Available from: https://dx.doi.org/10.1186/s12886-021-02013-2.

@article{1816338,
   author = {Farolfi, Martina and Cechova, Anna and Ondruskova, Nina and Zídková, Jana and Kousal, Bohdan and Hansikova, Hana and Honzik, Tomas and Liskova, Petra},
   article_location = {LONDON},
   article_number = {1},
   doi = {http://dx.doi.org/10.1186/s12886-021-02013-2},
   keywords = {N-linked glycosylation; Congenital disorder of glycosylation; ALG3-CDG; Optic nerve hypoplasia; Arthrogryposis; Transferrin isoelectric focusing; Novel mutation},
   language = {eng},
   issn = {1471-2415},
   journal = {BMC OPHTHALMOLOGY},
   title = {ALG3-CDG: a patient with novel variants and review of the genetic and ophthalmic findings},
   url = {https://bmcophthalmol.biomedcentral.com/articles/10.1186/s12886-021-02013-2},
   volume = {21},
   year = {2021}
}

TY  - JOUR
ID  - 1816338
AU  - Farolfi, Martina - Cechova, Anna - Ondruskova, Nina - Zídková, Jana - Kousal, Bohdan - Hansikova, Hana - Honzik, Tomas - Liskova, Petra
PY  - 2021
TI  - ALG3-CDG: a patient with novel variants and review of the genetic and ophthalmic findings
JF  - BMC OPHTHALMOLOGY
VL  - 21
IS  - 1
SP  - 1-7
EP  - 1-7
PB  - BMC
SN  - 14712415
KW  - N-linked glycosylation
KW  - Congenital disorder of glycosylation
KW  - ALG3-CDG
KW  - Optic nerve hypoplasia
KW  - Arthrogryposis
KW  - Transferrin isoelectric focusing
KW  - Novel mutation
UR  - https://bmcophthalmol.biomedcentral.com/articles/10.1186/s12886-021-02013-2
N2  - BackgroundALG3-CDG is a rare autosomal recessive disease. It is characterized by deficiency of alpha-1,3-mannosyltransferase caused by pathogenic variants in the ALG3 gene. Patients manifest with severe neurologic, cardiac, musculoskeletal and ophthalmic phenotype in combination with dysmorphic features, and almost half of them die before or during the neonatal period.Case presentationA 23 months-old girl presented with severe developmental delay, epilepsy, cortical atrophy, cerebellar vermis hypoplasia and ocular impairment. Facial dysmorphism, clubfeet and multiple joint contractures were observed already at birth. Transferrin isoelectric focusing revealed a type 1 pattern. Funduscopy showed hypopigmentation and optic disc pallor. Profound retinal ganglion cell loss and inner retinal layer thinning was documented on spectral-domain optical coherence tomography imaging. The presence of optic nerve hypoplasia was also supported by magnetic resonance imaging. A gene panel based next-generation sequencing and subsequent Sanger sequencing identified compound heterozygosity for two novel variants c.116del p.(Pro39Argfs*40) and c.1060 C>T p.(Arg354Cys) in ALG3.ConclusionsOur study expands the spectrum of pathogenic variants identified in ALG3. Thirty-three variants in 43 subjects with ALG3-CDG have been reported. Literature review shows that visual impairment in ALG3-CDG is most commonly linked to optic nerve hypoplasia.
ER  -

FAROLFI, Martina, Anna CECHOVA, Nina ONDRUSKOVA, Jana ZÍDKOVÁ, Bohdan KOUSAL, Hana HANSIKOVA, Tomas HONZIK and Petra LISKOVA. ALG3-CDG: a patient with novel variants and review of the genetic and ophthalmic findings. \textit{BMC OPHTHALMOLOGY}. LONDON: BMC, 2021, vol.~21, No~1, p.~1-7. ISSN~1471-2415. Available from: https://dx.doi.org/10.1186/s12886-021-02013-2.

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