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CNTNAP2

Synonyms
AUTS15, CASPR2, CDFE, NRXN4, PTHSL1
External resources
Summary
This gene encodes a member of the neurexin family which functions in the vertebrate nervous system as cell adhesion molecules and receptors. This protein, like other neurexin proteins, contains epidermal growth factor repeats and laminin G domains. In addition, it includes an F5/8 type C domain, discoidin/neuropilin- and fibrinogen-like domains, thrombospondin N-terminal-like domains and a putative PDZ binding site. This protein is localized at the juxtaparanodes of myelinated axons, and mediates interactions between neurons and glia during nervous system development and is also involved in localization of potassium channels within differentiating axons. This gene encompasses almost 1.5% of chromosome 7 and is one of the largest genes in the human genome. It is directly bound and regulated by forkhead box protein P2, a transcription factor related to speech and language development. This gene has been implicated in multiple neurodevelopmental disorders, including Gilles de la Tourette syndrome, schizophrenia, epilepsy, autism, ADHD and intellectual disability.

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
10
Likely pathogenic
0
VUS
6,737
Likely benign
4,139
Benign
853

Patient phenotypes

Proportions of phenotypes among 10 patients carrying pathogenic or likely pathogenic variants on CNTNAP2 gene are displayed below.

Phenotype class
Patients in 3billion (%)
Abnormality of the nervous system
70%
Abnormality of the eye
30%
Abnormality of head or neck
10%
Abnormality of the cardiovascular system
10%
Abnormality of the ear
10%
Abnormality of the genitourinary system
10%
Abnormality of the integument
10%
Abnormality of the musculoskeletal system
10%
Abnormal cellular phenotype
0%
Abnormality of blood and blood-forming tissues
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 immune 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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