Home > Gene Browser > GJA1

GJA1

Synonyms
AVSD3, CMDR, CX43, EKVP, EKVP3, GJAL, HLHS1, HSS, ODDD, PPKCA
External resources
Summary
This gene is a member of the connexin gene family. The encoded protein is a component of gap junctions, which are composed of arrays of intercellular channels that provide a route for the diffusion of low molecular weight materials from cell to cell. The encoded protein is the major protein of gap junctions in the heart that are thought to have a crucial role in the synchronized contraction of the heart and in embryonic development. A related intronless pseudogene has been mapped to chromosome 5. Mutations in this gene have been associated with oculodentodigital dysplasia, autosomal recessive craniometaphyseal dysplasia and heart malformations.

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
1
Likely pathogenic
2
VUS
271
Likely benign
53
Benign
93

Patient phenotypes

Proportions of phenotypes among 3 patients carrying pathogenic or likely pathogenic variants on GJA1 gene are displayed below.

Phenotype class
Patients in 3billion (%)
Abnormality of the nervous system
66.7%
Abnormality of head or neck
33.3%
Abnormality of limbs
33.3%
Abnormality of the eye
33.3%
Abnormality of the genitourinary system
33.3%
Abnormality of the musculoskeletal system
33.3%
Growth abnormality
33.3%
Abnormal cellular phenotype
0%
Abnormality of blood and blood-forming tissues
0%
Abnormality of metabolism homeostasis
0%
Abnormality of prenatal development or birth
0%
Abnormality of the breast
0%
Abnormality of the cardiovascular system
0%
Abnormality of the digestive system
0%
Abnormality of the ear
0%
Abnormality of the endocrine system
0%
Abnormality of the immune system
0%
Abnormality of the integument
0%
Abnormality of the respiratory system
0%
Abnormality of the thoracic cavity
0%
Abnormality of the voice
0%
Constitutional symptom
0%
Neoplasm
0%

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