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Symbol
Name
ID
Gja1
gap junction protein, alpha 1
MGI:95713
Phenotype annotations related to integument
*Aspects of the system are reported to show a normal phenotype.
Darker colors indicate more annotations
Human Phenotypes
Sparse scalp hair
Absent eyebrow
Sparse eyebrow
Sparse eyelashes
Plantar hyperkeratosis
Palmoplantar keratoderma
Patchy palmoplantar hyperkeratosis
Erythema
Facial erythema
Palmoplantar erythema
Skin rash
Abnormal hair morphology
Absent hair
Alopecia
Generalized hirsutism
Sparse hair
Generalized hypotrichosis
Trichorrhexis nodosa
Slow-growing hair
Brittle hair
Curly hair
Dry hair
Fine hair
Abnormality of the nail
Abnormal fingernail morphology
Leukonychia
Fragile nails
Nail dysplasia
Ridged nail
Nail dystrophy
Abnormal blistering of the skin
Epidermal acanthosis
Scaling skin
Hyperpigmentation of the skin
Irregular hyperpigmentation
Hypermelanotic macule
Dry skin
Cutaneous photosensitivity
Poor wound healing
Keratosis pilaris
Macule
Skin fissure
Hypergranulosis
Hyperkeratosis
Epidermal hyperkeratosis
Orthokeratosis
Sclerodactyly
Neoplasm of the skin
Disease(s) Associated with GJA1
erythrokeratodermia variabilis
erythrokeratodermia variabilis et progressiva 3
oculodentodigital dysplasia
palmoplantar keratoderma and congenital alopecia 1

Mouse Phenotypes
integument phenotype
abnormal mammary gland growth during pregnancy
abnormal lactation
impaired skin barrier function
sparse hair
abnormal epidermis stratum corneum morphology
abnormal epidermis stratum granulosum morphology
abnormal skin condition
Availability Mouse Genotype
Gja1tm4Kwi/Gja1tm4Kwi
Gja1M1Jrt/Gja1+
Gja1tm1.1Kwi/Gja1tm4Kwi *
Gja1tm7(Gja2)Kwi/Gja1+
Gja1tm1Kwi/Gja1tm5(cre/ERT)Kwi  (conditional)
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
04/09/2024
MGI 6.23
The Jackson Laboratory