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Semilobar Holoprosencephaly Caused by a Novel and De Novo ZIC2 Pathogenic Variant Cover

Semilobar Holoprosencephaly Caused by a Novel and De Novo ZIC2 Pathogenic Variant

Open Access
|May 2023

Figures & Tables

Figure 1.

(A) Seven months old infant presenting with microcephaly and mild facial dysmorphic features, and (B) coronal (a) and sagittal (b) section of trans-fontanelle ultrasound examination revealing a single ventricle.
(A) Seven months old infant presenting with microcephaly and mild facial dysmorphic features, and (B) coronal (a) and sagittal (b) section of trans-fontanelle ultrasound examination revealing a single ventricle.

Figure 2.

1,5 T MRI showing mega cisterna magna, rudimentary anterior falx cerebri without formed fronto-parietal interhemispheric fissure, absence of septum pellucidum with agenesis of the corpus callosum, thinning of cerebrum, dysplastic unfused thalamus, rudimentary third brain ventricle, rudimentary temporal and occipital horns and cortical polymorphia with macrogyria and microgyria.
1,5 T MRI showing mega cisterna magna, rudimentary anterior falx cerebri without formed fronto-parietal interhemispheric fissure, absence of septum pellucidum with agenesis of the corpus callosum, thinning of cerebrum, dysplastic unfused thalamus, rudimentary third brain ventricle, rudimentary temporal and occipital horns and cortical polymorphia with macrogyria and microgyria.

Figure 3.

EEG demonstrating bihemispheric foci with a tendency for generalization.
EEG demonstrating bihemispheric foci with a tendency for generalization.

Figure 4.

Molecular model of ZIC2 protein indicating the position of Cys-273.
Molecular model of ZIC2 protein indicating the position of Cys-273.

j_bjmg-2022-0017_tab_001

GENEVARIANTZYGOSITYVARIANT CLASSIFICATION
ZIC2c.818G>A (p.Cys273Tyr)heterozygousLikely Pathogenic
ZIC2c.1439C>T (p.Ser480Leu)heterozygousUncertain Significance
CTNNB1c.1657A>G (p.Met553Val)heterozygousUncertain Significance
PCLOc.5293C>T (p.Pro1765Ser)heterozygousUncertain Significance
PEX5c.1814G>A (p.Ser605Asn)heterozygousUncertain Significance
PTPN23c.1603C>G (p.Gin535Glu)heterozygousUncertain Significance
Language: English
Page range: 71 - 76
Published on: May 2, 2023
Published by: Macedonian Academy of Sciences and Arts
In partnership with: Paradigm Publishing Services
Publication frequency: 2 issues per year

© 2023 D Nonkulovski, A Sofijanova, T Spasovska, Milanovski Gorjan, Lj Muaremoska-Kanzoska, T Arsov, published by Macedonian Academy of Sciences and Arts
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.