rs148104020

Positions:

• chr7-148172360-G-A

Variant summary

Our verdict is Benign. Variant got -17 ACMG points: 0P and 17B. BP4_Strong BP6_Very_Strong BP7 BS2

The NM_014141.6(CNTNAP2):​c.2892G>A​(p.Ser964=) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000665 in 1,614,092 control chromosomes in the GnomAD database, including 5 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★★).

• Frequency:
  • Genomes: 𝑓 0.0032 (3 hom., cov: 33)
  • Exomes 𝑓: 0.00041 (2 hom.)
• Consequence: CNTNAP2 NM_014141.6 synonymous
• Clinical Significance: Benign/Likely benign criteria provided, multiple submitters, no conflicts B:6
• Conservation: PhyloP100: -1.68

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]

ACMG classification

Verdict is Benign. Variant got -17 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.82).
• BP6: Variant 7-148172360-G-A is Benign according to our data. Variant chr7-148172360-G-A is described in ClinVar as [Likely_benign]. Clinvar id is 95565.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars. Variant chr7-148172360-G-A is described in Lovd as [Likely_benign].
• BP7: Synonymous conserved (PhyloP=-1.68 with no splicing effect.
• BS2: High Homozygotes in GnomAd4 at 3 AR gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
CNTNAP2	NM_014141.6	c.2892G>A	p.Ser964=	synonymous_variant	18/24	ENST00000361727.8

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
CNTNAP2	ENST00000361727.8	c.2892G>A	p.Ser964=	synonymous_variant	18/24	1	NM_014141.6	P1

Frequencies

GnomAD3 genomes AF: 0.00317 AC: 482 AN: 152114 Hom.: 3 Cov.: 33

Gnomad AFR AF: 0.0106

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.00151

Gnomad ASJ AF: 0.00

Gnomad EAS AF: 0.000193

Gnomad SAS AF: 0.00

Gnomad FIN AF: 0.00

Gnomad MID AF: 0.00

Gnomad NFE AF: 0.000162

Gnomad OTH AF: 0.00383

GnomAD3 exomes AF: 0.000971 AC: 244 AN: 251348 Hom.: 1 AF XY: 0.000707 AC XY: 96 AN XY: 135840

Gnomad AFR exome AF: 0.0107

Gnomad AMR exome AF: 0.00104

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.000544

Gnomad SAS exome AF: 0.0000327

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.000158

Gnomad OTH exome AF: 0.000815

GnomAD4 exome AF: 0.000406 AC: 593 AN: 1461860 Hom.: 2 Cov.: 32 AF XY: 0.000353 AC XY: 257 AN XY: 727230

Gnomad4 AFR exome AF: 0.00845

Gnomad4 AMR exome AF: 0.00123

Gnomad4 ASJ exome AF: 0.00

Gnomad4 EAS exome AF: 0.000554

Gnomad4 SAS exome AF: 0.0000232

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 0.000158

Gnomad4 OTH exome AF: 0.000861

GnomAD4 genome AF: 0.00315 AC: 480 AN: 152232 Hom.: 3 Cov.: 33 AF XY: 0.00306 AC XY: 228 AN XY: 74446

Gnomad4 AFR AF: 0.0105

Gnomad4 AMR AF: 0.00150

Gnomad4 ASJ AF: 0.00

Gnomad4 EAS AF: 0.000193

Gnomad4 SAS AF: 0.00

Gnomad4 FIN AF: 0.00

Gnomad4 NFE AF: 0.000162

Gnomad4 OTH AF: 0.00379

Alfa AF: 0.00152 Hom.: 0

Bravo AF: 0.00363

Asia WGS AF: 0.000289 AC: 1 AN: 3478

EpiCase AF: 0.000109

EpiControl AF: 0.0000593

ClinVar

Significance: Benign/Likely benign

Submissions summary: Benign:6

Revision: criteria provided, multiple submitters, no conflicts

Submissions by phenotype

not specified Benign:3

Benign, criteria provided, single submitter	clinical testing	Eurofins Ntd Llc (ga)	Aug 09, 2013	- -
Benign, criteria provided, single submitter	clinical testing	GeneDx	Jan 14, 2013	This variant is considered likely benign or benign based on one or more of the following criteria: it is a conservative change, it occurs at a poorly conserved position in the protein, it is predicted to be benign by multiple in silico algorithms, and/or has population frequency not consistent with disease. -
Benign, criteria provided, single submitter	clinical testing	Genetic Services Laboratory, University of Chicago	Dec 03, 2018	- -

Cortical dysplasia-focal epilepsy syndrome Benign:1

Benign, criteria provided, single submitter

clinical testing

Invitae

Jan 30, 2024

- -

Inborn genetic diseases Benign:1

Likely benign, criteria provided, single submitter

clinical testing

Ambry Genetics

Mar 21, 2016

This alteration is classified as likely benign based on a combination of the following: seen in unaffected individuals, population frequency, intact protein function, lack of segregation with disease, co-occurrence, RNA analysis, in silico models, amino acid conservation, lack of disease association in case-control studies, and/or the mechanism of disease or impacted region is inconsistent with a known cause of pathogenicity. -

not provided Benign:1

Likely benign, criteria provided, single submitter

clinical testing

Athena Diagnostics

Nov 14, 2017

- -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.82
CADD	Benign	0.052
DANN	Benign	0.53

Splicing

Name	Calibrated prediction	Score	Prediction
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

Other links and lift over

dbSNP: rs148104020; hg19: chr7-147869452;