chr7-147639304-C-A

Position:

chr7-147639304-C-A

Variant summary

Our verdict is Uncertain significance. Variant got 1 ACMG points: 2P and 1B. PM2BP4

The NM_014141.6(CNTNAP2):c.2096C>A(p.Pro699Gln) variant causes a missense, splice region change. The variant allele was found at a frequency of 0.0000198 in 1,613,604 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 2/3 splice prediction tools predict no significant impact on normal splicing. Variant has been reported in ClinVar as Uncertain significance (★★).

Frequency

Genomes: 𝑓 0.000085 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000013 ( 0 hom. )

Consequence

CNTNAP2
NM_014141.6 missense, splice_region

Scores

Splicing: ADA: 0.9335

Clinical Significance

Uncertain significance criteria provided, multiple submitters, no conflicts U:3

Conservation

PhyloP100: 6.80

Variant links:

Genes affected

CNTNAP2 (HGNC:13830): (contactin associated protein 2) 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. [provided by RefSeq, Jul 2017]

CNTNAP2 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 1 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.3940699).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
CNTNAP2	NM_014141.6 linkuse as main transcript	c.2096C>A	p.Pro699Gln	missense_variant, splice_region_variant	13/24	ENST00000361727.8	NP_054860.1
CNTNAP2	XM_017011950.3 linkuse as main transcript	c.2096C>A	p.Pro699Gln	missense_variant, splice_region_variant	13/14		XP_016867439.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
CNTNAP2	ENST00000361727.8 linkuse as main transcript	c.2096C>A	p.Pro699Gln	missense_variant, splice_region_variant	13/24	1	NM_014141.6	ENSP00000354778	P1	Q9UHC6-1

Frequencies

GnomAD3 genomes

AF:

0.0000855

AC:

AN:

152120

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000851

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.00

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000679

AC:

AN:

250230

Hom.:

AF XY:

0.0000739

AC XY:

AN XY:

135230

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.000435

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.000328

GnomAD4 exome

AF:

0.0000130

AC:

AN:

1461484

Hom.:

Cov.:

AF XY:

0.0000138

AC XY:

AN XY:

727058

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.000403

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00

Gnomad4 OTH exome

AF:

0.0000166

GnomAD4 genome

AF:

0.0000855

AC:

AN:

152120

Hom.:

Cov.:

AF XY:

0.0000942

AC XY:

AN XY:

74300

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.000851

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.00

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.0000434

Hom.:

Bravo

AF:

0.0000642

ExAC

AF:

0.0000330

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:3

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

Cortical dysplasia-focal epilepsy syndrome

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

Jun 20, 2022

This sequence change replaces proline, which is neutral and non-polar, with glutamine, which is neutral and polar, at codon 699 of the CNTNAP2 protein (p.Pro699Gln). This variant is present in population databases (rs764412489, gnomAD 0.05%). This variant has not been reported in the literature in individuals affected with CNTNAP2-related conditions. ClinVar contains an entry for this variant (Variation ID: 582689). Algorithms developed to predict the effect of missense changes on protein structure and function are either unavailable or do not agree on the potential impact of this missense change (SIFT: "Deleterious"; PolyPhen-2: "Benign"; Align-GVGD: "Class C0"). In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance. -

Inborn genetic diseases

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Sep 05, 2019

The p.P699Q variant (also known as c.2096C>A), located in coding exon 13 of the CNTNAP2 gene, results from a C to A substitution at nucleotide position 2096. The proline at codon 699 is replaced by glutamine, an amino acid with similar properties. This amino acid position is highly conserved in available vertebrate species. In addition, this alteration is predicted to be tolerated by in silico analysis.Since supporting evidence is limited at this time, the clinical significance of this alteration remains unclear. -

Autism, susceptibility to, 15;C2750246:Cortical dysplasia-focal epilepsy syndrome

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Fulgent Genetics, Fulgent Genetics

Oct 31, 2018

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.19

BayesDel_addAF

Benign

-0.23

BayesDel_noAF

Benign

-0.24

CADD

Pathogenic

DANN

Uncertain

0.99

DEOGEN2

Uncertain

0.58

D;D

Eigen

Uncertain

0.64

Eigen_PC

Uncertain

0.66

FATHMM_MKL

Pathogenic

0.98

LIST_S2

Benign

0.75

.;T

M_CAP

Benign

0.015

MetaRNN

Benign

0.39

T;T

MetaSVM

Benign

-1.1

MutationAssessor

Benign

1.6

L;L

MutationTaster

Benign

1.0

PrimateAI

Uncertain

0.73

PROVEAN

Uncertain

-2.9

D;.

REVEL

Benign

0.25

Sift

Benign

0.45

T;.

Sift4G

Benign

0.48

T;.

Polyphen

0.98

D;D

Vest4

0.78

MutPred

0.18

Loss of stability (P = 0.0213);Loss of stability (P = 0.0213);

MVP

0.69

MPC

0.14

ClinPred

0.97

GERP RS

5.7

Varity_R

0.28

gMVP

0.45

Splicing

Name

Calibrated prediction

Score

Prediction

dbscSNV1_ADA

Benign

0.93

dbscSNV1_RF

Pathogenic

0.75

SpliceAI score (max)

0.0

Details are displayed if max score is > 0.2

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

LitVar

Below is the list of publications found by LitVar. It may be empty.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over