1-205058200-G-A

Variant names:

Variant summary

Our verdict is Likely benign. The variant received -3 ACMG points: 0P and 3B. BP4_ModerateBS1_Supporting

The NM_005076.5(CNTN2):c.235G>A(p.Glu79Lys) variant causes a missense change. The variant allele was found at a frequency of 0.000102 in 1,584,692 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★★).

Frequency

Genomes: 𝑓 0.000039 ( 0 hom., cov: 32)

Exomes 𝑓: 0.00011 ( 0 hom. )

Consequence

CNTN2
NM_005076.5 missense

Scores

Clinical Significance

Uncertain significance criteria provided, multiple submitters, no conflicts U:2

Conservation

PhyloP100: 5.66

Publications

0 publications found

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 Gene-Disease associations (from GenCC):

complex neurodevelopmental disorder
Inheritance: AR Classification: DEFINITIVE Submitted by: ClinGen
epilepsy, familial adult myoclonic, 5
Inheritance: AR Classification: STRONG, LIMITED Submitted by: Labcorp Genetics (formerly Invitae), Ambry Genetics
benign adult familial myoclonic epilepsy
Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet

CNTN2 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

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

BP4

Computational evidence support a benign effect (MetaRNN=0.2061579).

BS1

Variant frequency is greater than expected in population nfe. GnomAdExome4 allele frequency = 0.000108 (155/1432524) while in subpopulation NFE AF = 0.000132 (145/1097630). AF 95% confidence interval is 0.000114. There are 0 homozygotes in GnomAdExome4. There are 67 alleles in the male GnomAdExome4 subpopulation. Median coverage is 32. This position passed quality control check. Existence of Clinvar submissions makes me limit the strength of this signal to Supporting

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_005076.5. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
CNTN2	NM_005076.5	MANE Select	c.235G>A	p.Glu79Lys	missense	Exon 4 of 23	NP_005067.1	Q02246
CNTN2	NM_001346083.2		c.235G>A	p.Glu79Lys	missense	Exon 4 of 23	NP_001333012.1	Q02246
CNTN2	NR_144350.2		n.504G>A		non_coding_transcript_exon	Exon 4 of 23

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
CNTN2	ENST00000331830.7	TSL:1 MANE Select	c.235G>A	p.Glu79Lys	missense	Exon 4 of 23	ENSP00000330633.4	Q02246
CNTN2	ENST00000640428.1	TSL:5	c.235G>A	p.Glu79Lys	missense	Exon 4 of 23	ENSP00000491474.1	A0A1W2PQ11
CNTN2	ENST00000853779.1		c.235G>A	p.Glu79Lys	missense	Exon 4 of 24	ENSP00000523838.1

Frequencies

GnomAD3 genomes

AF:

0.0000394

AC:

AN:

152168

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000483

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

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:

0.0000588

Gnomad OTH

AF:

0.00

GnomAD2 exomes

AF:

0.0000671

AC:

AN:

223616

AF XY:

0.0000665

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.000127

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.000108

AC:

155

AN:

1432524

Hom.:

Cov.:

AF XY:

0.0000944

AC XY:

AN XY:

709674

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

32626

American (AMR)

AF:

0.00

AC:

AN:

40962

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

24066

East Asian (EAS)

AF:

0.0000254

AC:

AN:

39434

South Asian (SAS)

AF:

0.000111

AC:

AN:

80952

European-Finnish (FIN)

AF:

0.00

AC:

AN:

52140

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5634

European-Non Finnish (NFE)

AF:

0.000132

AC:

145

AN:

1097630

Other (OTH)

AF:

0.00

AC:

AN:

59080

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.480

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

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

GnomAD4 genome

AF:

0.0000394

AC:

AN:

152168

Hom.:

Cov.:

AF XY:

0.0000135

AC XY:

AN XY:

74338

show subpopulations

African (AFR)

AF:

0.0000483

AC:

AN:

41418

American (AMR)

AF:

0.00

AC:

AN:

15282

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3470

East Asian (EAS)

AF:

0.00

AC:

AN:

5194

South Asian (SAS)

AF:

0.00

AC:

AN:

4824

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10624

Middle Eastern (MID)

AF:

0.00

AC:

AN:

316

European-Non Finnish (NFE)

AF:

0.0000588

AC:

AN:

68036

Other (OTH)

AF:

0.00

AC:

AN:

2092

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.483

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Alfa

AF:

0.0000607

Hom.:

Bravo

AF:

0.0000869

TwinsUK

AF:

0.000270

AC:

ALSPAC

AF:

0.000259

AC:

ESP6500AA

AF:

0.00

AC:

ESP6500EA

AF:

0.000116

AC:

ExAC

AF:

0.0000824

AC:

ClinVar

ClinVar submissions

Significance:Uncertain significance

Revision:criteria provided, multiple submitters, no conflicts

View on ClinVar

Pathogenic

VUS

Benign

Condition

Epilepsy, familial adult myoclonic, 5 (1)

not provided (1)

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Uncertain

0.51

BayesDel_addAF

Benign

-0.28

BayesDel_noAF

Benign

-0.41

CADD

Uncertain

(source)

DANN

Uncertain

1.0

DEOGEN2

Benign

0.30

Eigen

Benign

0.13

Eigen_PC

Benign

0.18

FATHMM_MKL

Pathogenic

0.98

LIST_S2

Benign

0.79

M_CAP

Benign

0.012

MetaRNN

Benign

0.21

MetaSVM

Benign

-1.1

MutationAssessor

Benign

1.3

PhyloP100

5.7

PrimateAI

Benign

0.41

PROVEAN

Uncertain

-2.4

REVEL

Benign

0.19

Sift

Uncertain

0.026

Sift4G

Benign

0.12

Polyphen

0.89

Vest4

0.30

MVP

0.61

MPC

0.48

ClinPred

0.19

GERP RS

4.4

Varity_R

0.39

gMVP

0.62

Mutation Taster

=90/10

polymorphism

(source)

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

You must be logged in to view publications. This limit was set because tens of millions (!) of queries from AI bots are generated daily.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Variant Effect in Transcripts

RefSeq Transcripts

Ensembl Transcripts

Frequencies

Age Distribution

ClinVar

Computational scores

Splicing

Publications

Other links and lift over