chr7-147128836-G-A

Variant names:

Variant summary

Our verdict is Likely benign. The variant received -3 ACMG points: 2P and 5B. PP3_ModerateBP6BS2

The NM_014141.6(CNTNAP2):c.1083G>A(p.Val361Val) variant causes a splice region, synonymous change. The variant allele was found at a frequency of 0.00374 in 1,613,786 control chromosomes in the GnomAD database, including 23 homozygotes. In-silico tool predicts a benign outcome for this variant. 2/3 splice prediction tools predicting alterations to normal splicing. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars).

Frequency

Genomes: 𝑓 0.0026 ( 2 hom., cov: 32)

Exomes 𝑓: 0.0039 ( 21 hom. )

Consequence

CNTNAP2
NM_014141.6 splice_region, synonymous

Scores

Splicing: ADA: 0.9998

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:1B:9

Conservation

PhyloP100: 3.94

Publications

7 publications found

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 Gene-Disease associations (from GenCC):

complex neurodevelopmental disorder
Inheritance: AR, AD Classification: DEFINITIVE, NO_KNOWN Submitted by: ClinGen
cortical dysplasia-focal epilepsy syndrome
Inheritance: AR Classification: DEFINITIVE, STRONG, MODERATE, SUPPORTIVE Submitted by: Illumina, Labcorp Genetics (formerly Invitae), Orphanet, G2P, Ambry Genetics

CNTNAP2 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Likely_benign. The variant received -3 ACMG points.

PP3

Splicing predictors support a deleterious effect. Scorers claiming Pathogenic: dbscSNV1_ADA, dbscSNV1_RF. Scorers claiming Uncertain: max_spliceai. No scorers claiming Benign.

BP6

Variant 7-147128836-G-A is Benign according to our data. Variant chr7-147128836-G-A is described in ClinVar as Conflicting_classifications_of_pathogenicity. ClinVar VariationId is 95554.

BS2

High Homozygotes in GnomAd4 at 2 AR,AD gene

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_014141.6. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	CNTNAP2	NM_014141.6	MANE Select	c.1083G>A	p.Val361Val	splice_region synonymous	Exon 7 of 24	NP_054860.1

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein
CNTNAP2	ENST00000361727.8	TSL:1 MANE Select	c.1083G>A	p.Val361Val	splice_region synonymous	Exon 7 of 24	ENSP00000354778.3
CNTNAP2	ENST00000636561.1	TSL:5	n.986G>A		splice_region non_coding_transcript_exon	Exon 6 of 8
CNTNAP2	ENST00000636870.1	TSL:5	n.945G>A		splice_region non_coding_transcript_exon	Exon 5 of 22

Frequencies

GnomAD3 genomes

AF:

0.00264

AC:

401

AN:

152008

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000773

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000459

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00166

Gnomad FIN

AF:

0.00597

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.00425

Gnomad OTH

AF:

0.000955

GnomAD2 exomes

AF:

0.00280

AC:

704

AN:

251296

AF XY:

0.00282

show subpopulations

Gnomad AFR exome

AF:

0.000984

Gnomad AMR exome

AF:

0.000260

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00346

Gnomad NFE exome

AF:

0.00491

Gnomad OTH exome

AF:

0.00163

GnomAD4 exome

AF:

0.00386

AC:

5636

AN:

1461660

Hom.:

Cov.:

AF XY:

0.00383

AC XY:

2787

AN XY:

727116

show subpopulations

African (AFR)

AF:

0.000628

AC:

AN:

33466

American (AMR)

AF:

0.000246

AC:

AN:

44718

Ashkenazi Jewish (ASJ)

AF:

0.0000766

AC:

AN:

26126

East Asian (EAS)

AF:

0.00

AC:

AN:

39684

South Asian (SAS)

AF:

0.00155

AC:

134

AN:

86254

European-Finnish (FIN)

AF:

0.00408

AC:

218

AN:

53416

Middle Eastern (MID)

AF:

0.000173

AC:

AN:

5766

European-Non Finnish (NFE)

AF:

0.00460

AC:

5114

AN:

1111844

Other (OTH)

AF:

0.00224

AC:

135

AN:

60386

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.471

Heterozygous variant carriers

302

604

906

1208

1510

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Exome Hom

Variant carriers

178

356

534

712

890

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

GnomAD4 genome

AF:

0.00264

AC:

401

AN:

152126

Hom.:

Cov.:

AF XY:

0.00270

AC XY:

201

AN XY:

74336

show subpopulations

African (AFR)

AF:

0.000771

AC:

AN:

41494

American (AMR)

AF:

0.000458

AC:

AN:

15268

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3472

East Asian (EAS)

AF:

0.00

AC:

AN:

5182

South Asian (SAS)

AF:

0.00166

AC:

AN:

4816

European-Finnish (FIN)

AF:

0.00597

AC:

AN:

10560

Middle Eastern (MID)

AF:

0.00

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.00425

AC:

289

AN:

68012

Other (OTH)

AF:

0.000945

AC:

AN:

2116

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.497

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome Het

Genome Hom

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

Alfa

AF:

0.00343

Hom.:

Bravo

AF:

0.00209

Asia WGS

AF:

0.000579

AC:

AN:

3466

EpiCase

AF:

0.00229

EpiControl

AF:

0.00379

ClinVar

ClinVar submissions as Germline

Significance:Conflicting classifications of pathogenicity

Revision:criteria provided, conflicting classifications

View on ClinVar

Pathogenic

VUS

Benign

Condition

Cortical dysplasia-focal epilepsy syndrome (3)

not specified (3)

not provided (2)

CNTNAP2-related disorder (1)

Inborn genetic diseases (1)

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.22

CADD

Uncertain

(source)

DANN

Benign

0.94

PhyloP100

3.9

Mutation Taster

=14/86

disease causing

(source)

Splicing

Name

Calibrated prediction

Score

Prediction

dbscSNV1_ADA

Pathogenic

1.0

dbscSNV1_RF

Pathogenic

1.0

SpliceAI score (max)

0.39

Details are displayed if max score is > 0.2

DS_DG_spliceai

0.39

Position offset: -3

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

Publications

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Variant Effect in Transcripts

RefSeq Transcripts

Ensembl Transcripts

Frequencies

Age Distribution

Age Distribution

ClinVar

ClinVar submissions as Germline

Computational scores

Splicing

Publications

Other links and lift over