Variant chr1-205064747-C-A details in Genebe, Genetics Data Aggregator

Variant summary

Our verdict is Benign. Variant got -19 ACMG points: 0P and 19B. BP4_ModerateBP6_Very_StrongBP7BS1BS2

The ENST00000331830.7(CNTN2):c.1516C>A(p.Arg506=) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00205 in 1,613,922 control chromosomes in the GnomAD database, including 67 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Benign (★★).

Frequency

Genomes: 𝑓 0.011 ( 35 hom., cov: 32)

Exomes 𝑓: 0.0011 ( 32 hom. )

Consequence

CNTN2
ENST00000331830.7 synonymous

Scores

Clinical Significance

Benign criteria provided, multiple submitters, no conflicts B:2

Conservation

PhyloP100: 1.81

Variant links:

Genes affected

CNTN2 (HGNC:2172): (contactin 2) This gene encodes a member of the contactin family of proteins, part of the immunoglobulin superfamily of cell adhesion molecules. The encoded glycosylphosphatidylinositol (GPI)-anchored neuronal membrane protein plays a role in the proliferation, migration, and axon guidance of neurons of the developing cerebellum. A mutation in this gene may be associated with adult myoclonic epilepsy. [provided by RefSeq, Sep 2016]

CNTN2 links:

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ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -19 ACMG points.

BP4

Computational evidence support a benign effect (BayesDel_noAF=-0.19).

BP6

Variant 1-205064747-C-A is Benign according to our data. Variant chr1-205064747-C-A is described in ClinVar as [Benign]. Clinvar id is 474465.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

BP7

Synonymous conserved (PhyloP=1.81 with no splicing effect.

BS1

Variant frequency is greater than expected in population afr. gnomad4 allele frequency = 0.0114 (1739/152322) while in subpopulation AFR AF= 0.0397 (1651/41558). AF 95% confidence interval is 0.0381. There are 35 homozygotes in gnomad4. There are 819 alleles in male gnomad4 subpopulation. Median coverage is 32. This position pass quality control queck.

BS2

High Homozygotes in GnomAd4 at 35 AR gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
CNTN2	NM_005076.5 linkuse as main transcript	c.1516C>A	p.Arg506=	synonymous_variant	12/23	ENST00000331830.7	NP_005067.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
CNTN2	ENST00000331830.7 linkuse as main transcript	c.1516C>A	p.Arg506=	synonymous_variant	12/23	1	NM_005076.5	ENSP00000330633	P1

Frequencies

GnomAD3 genomes

AF:

0.0114

AC:

1735

AN:

152204

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0397

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00386

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.000207

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00316

Gnomad NFE

AF:

0.0000882

Gnomad OTH

AF:

0.0100

GnomAD3 exomes

AF:

0.00292

AC:

722

AN:

247468

Hom.:

AF XY:

0.00220

AC XY:

295

AN XY:

133890

show subpopulations

Gnomad AFR exome

AF:

0.0415

Gnomad AMR exome

AF:

0.00125

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.0000654

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000362

Gnomad OTH exome

AF:

0.000990

GnomAD4 exome

AF:

0.00108

AC:

1574

AN:

1461600

Hom.:

Cov.:

AF XY:

0.000932

AC XY:

678

AN XY:

727088

show subpopulations

Gnomad4 AFR exome

AF:

0.0400

Gnomad4 AMR exome

AF:

0.00166

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.0000696

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.0000162

Gnomad4 OTH exome

AF:

0.00215

GnomAD4 genome

AF:

0.0114

AC:

1739

AN:

152322

Hom.:

Cov.:

AF XY:

0.0110

AC XY:

819

AN XY:

74470

show subpopulations

Gnomad4 AFR

AF:

0.0397

Gnomad4 AMR

AF:

0.00386

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.000207

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000882

Gnomad4 OTH

AF:

0.00993

Alfa

AF:

0.00340

Hom.:

Bravo

AF:

0.0131

Asia WGS

AF:

0.00115

AC:

AN:

3478

EpiCase

AF:

0.0000545

EpiControl

AF:

0.0000593

ClinVar

Significance: Benign

Submissions summary: Benign:2

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

not provided

Benign:1

Benign, criteria provided, single submitter

not provided

Breakthrough Genomics, Breakthrough Genomics

- -

Epilepsy, familial adult myoclonic, 5

Benign:1

Benign, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

Feb 01, 2024

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.19

CADD

Benign

DANN

Benign

0.77

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.040

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