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Symbol
Name
ID
Gja1
gap junction protein, alpha 1
MGI:95713
Phenotype annotations related to craniofacial
Darker colors indicate more annotations
Human Phenotypes
Sparse scalp hair
Frontal bossing
Brachycephaly
Cranial hyperostosis
Facial hyperostosis
Micrognathia
Mandibular prognathia
Hypoplasia of the maxilla
Microcephaly
Macrocephaly
Wide cranial sutures
Large fontanelles
Coarse facial features
Facial palsy
High forehead
Broad alveolar ridges
Long philtrum
Cleft upper lip
Median cleft upper lip
Non-midline cleft of the upper lip
Thin vermilion border
Cleft palate
High palate
Narrow mouth
Taurodontia
Macrodontia of permanent maxillary central incisor
Microdontia
Tooth agenesis
Selective tooth agenesis
Delayed eruption of teeth
Delayed eruption of permanent teeth
Abnormal dental enamel morphology
Enamel hypoplasia
Carious teeth
Hypoplasia of teeth
Hypoplasia of the primary teeth
Premature loss of primary teeth
Premature loss of teeth
Dental crowding
Dental malocclusion
Abnormality of the nose
Broad columella
Low hanging columella
Anteverted nares
Underdeveloped nasal alae
Depressed nasal ridge
Narrow nasal bridge
Wide nasal bridge
Bony paranasal bossing
Long nose
Narrow nose
Short nose
Abnormal nasopharynx morphology
Nasal congestion
Absent eyebrow
Sparse eyebrow
Sparse eyelashes
Blepharophimosis
Short palpebral fissure
Downslanted palpebral fissures
Upslanted palpebral fissure
Epicanthus
Telecanthus
Disease(s) Associated with GJA1
autosomal recessive craniometaphyseal dysplasia
erythrokeratodermia variabilis
oculodentodigital dysplasia
palmoplantar keratoderma and congenital alopecia 1

Mouse Phenotypes
abnormal craniofacial morphology
abnormal craniofacial bone morphology
abnormal cranium morphology
small cranium
abnormal neurocranium morphology
small frontal bone
interparietal bone hypoplasia
abnormal occipital bone morphology
abnormal parietal bone morphology
thin parietal bone
abnormal alisphenoid bone morphology
abnormal zygomatic arch morphology
small neurocranium
abnormal tooth morphology
abnormal incisor morphology
small lower incisors
abnormal tooth development
abnormal tooth hard tissue morphology
reduced enamel thickness
brittle teeth
small mandible
small maxilla
abnormal nasal bone morphology
small nasal bone
short zygomatic bone
small face
depressed nasal bridge
pointed snout
small snout
Availability Mouse Genotype
Gja1tm1Kdr/Gja1tm1Kdr
Gja1M1Jrt/Gja1+
Gja1tm8Kwi/Gja1+
Tg(Pgk1-cre)1Lni/0  (conditional)

Contributing Projects:
Mouse Genome Database (MGD), Gene Expression Database (GXD), Mouse Models of Human Cancer database (MMHCdb) (formerly Mouse Tumor Biology (MTB)), Gene Ontology (GO)
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last database update
04/30/2024
MGI 6.23
The Jackson Laboratory