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ZIC2

Synonyms
HPE5
External resources
Summary
This gene encodes a member of the ZIC family of C2H2-type zinc finger proteins. This protein functions as a transcriptional repressor and may regulate tissue specific expression of dopamine receptor D1. Expansion of an alanine repeat in the C-terminus of the encoded protein and other mutations in this gene cause holoprosencephaly type 5. Holoprosencephaly is the most common structural anomaly of the human brain. A polyhistidine tract polymorphism in this gene may be associated with increased risk of neural tube defects. This gene is closely linked to a gene encoding zinc finger protein of the cerebellum 5, a related family member on chromosome 13.

Variant counts

The variants found in rare patients tested by 3billion are classified and counted according to ACMG guidelines. The variants with over 5% variant frequency in population genome databases ( gnomAD, dbSNP, etc) are excluded.

Pathogenic
4
Likely pathogenic
0
VUS
616
Likely benign
782
Benign
76

Patient phenotypes

Proportions of phenotypes among 4 patients carrying pathogenic or likely pathogenic variants on ZIC2 gene are displayed below.

Phenotype class
Patients in 3billion (%)
Abnormality of the cardiovascular system
50%
Abnormality of the ear
25%
Abnormality of the nervous system
25%
Abnormal cellular phenotype
0%
Abnormality of blood and blood-forming tissues
0%
Abnormality of head or neck
0%
Abnormality of limbs
0%
Abnormality of metabolism homeostasis
0%
Abnormality of prenatal development or birth
0%
Abnormality of the breast
0%
Abnormality of the digestive system
0%
Abnormality of the endocrine system
0%
Abnormality of the eye
0%
Abnormality of the genitourinary system
0%
Abnormality of the immune system
0%
Abnormality of the integument
0%
Abnormality of the musculoskeletal system
0%
Abnormality of the respiratory system
0%
Abnormality of the thoracic cavity
0%
Abnormality of the voice
0%
Constitutional symptom
0%
Growth abnormality
0%
Neoplasm
0%

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