18-27952209-C-T

Variant names:

Variant summary

Our verdict is Likely benign. Variant got -5 ACMG points: 0P and 5B. BS1_SupportingBS2

The NM_001792.5(CDH2):c.2665G>A(p.Asp889Asn) variant causes a missense change. The variant allele was found at a frequency of 0.000118 in 1,613,570 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Uncertain significance (★★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. D889G) has been classified as Uncertain significance.

Frequency

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

Exomes 𝑓: 0.00013 ( 0 hom. )

Consequence

CDH2
NM_001792.5 missense

Scores

Clinical Significance

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

Conservation

PhyloP100: 6.17

Variant links:

Genes affected

CDH2 (HGNC:1759): (cadherin 2) This gene encodes a classical cadherin and member of the cadherin superfamily. Alternative splicing results in multiple transcript variants, at least one of which encodes a preproprotein is proteolytically processed to generate a calcium-dependent cell adhesion molecule and glycoprotein. This protein plays a role in the establishment of left-right asymmetry, development of the nervous system and the formation of cartilage and bone. [provided by RefSeq, Nov 2015]

CDH2 links:

ENSG00000227279 (HGNC:40138):

ENSG00000227279 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -5 ACMG points.

BS1

Variant frequency is greater than expected in population nfe. gnomad4_exome allele frequency = 0.000126 (184/1461488) while in subpopulation NFE AF= 0.000161 (179/1111734). AF 95% confidence interval is 0.000142. There are 0 homozygotes in gnomad4_exome. There are 88 alleles in male gnomad4_exome subpopulation. Median coverage is 31. This position pass quality control queck. Existence of Clinvar submissions makes me limit the strength of this signal to Supporting

BS2

High AC in GnomAd4 at 6 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
CDH2	NM_001792.5 link	c.2665G>A	p.Asp889Asn	missense_variant	Exon 16 of 16	ENST00000269141.8	NP_001783.2	P19022-1A0A024RC42
CDH2	NM_001308176.2 link	c.2572G>A	p.Asp858Asn	missense_variant	Exon 15 of 15		NP_001295105.1	P19022-2
CDH2	XM_011525788.1 link	c.2410G>A	p.Asp804Asn	missense_variant	Exon 16 of 16		XP_011524090.1	C9J126
CDH2	XM_017025514.3 link	c.2514+11148G>A		intron_variant	Intron 15 of 15		XP_016881003.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
CDH2	ENST00000269141.8 link	c.2665G>A	p.Asp889Asn	missense_variant	Exon 16 of 16	1	NM_001792.5	ENSP00000269141.3		P19022-1

Frequencies

GnomAD3 genomes

AF:

0.0000395

AC:

AN:

152082

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000725

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:

0.0000441

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000318

AC:

AN:

251250

Hom.:

AF XY:

0.0000221

AC XY:

AN XY:

135796

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.0000289

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:

0.0000616

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.000126

AC:

184

AN:

1461488

Hom.:

Cov.:

AF XY:

0.000121

AC XY:

AN XY:

727056

show subpopulations

Gnomad4 AFR exome

AF:

0.0000299

Gnomad4 AMR exome

AF:

0.0000447

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:

0.000161

Gnomad4 OTH exome

AF:

0.0000331

GnomAD4 genome

AF:

0.0000395

AC:

AN:

152082

Hom.:

Cov.:

AF XY:

0.0000269

AC XY:

AN XY:

74274

show subpopulations

Gnomad4 AFR

AF:

0.0000725

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000441

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.0000450

Hom.:

Bravo

AF:

0.0000416

ESP6500AA

AF:

0.00

AC:

ESP6500EA

AF:

0.000116

AC:

ExAC

AF:

0.0000330

AC:

EpiCase

AF:

0.00

EpiControl

AF:

0.0000593

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:3

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

not provided

Uncertain:2

Feb 01, 2023

CeGaT Center for Human Genetics Tuebingen

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

CDH2: PP3 -

Nov 27, 2024

Labcorp Genetics (formerly Invitae), Labcorp

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

This sequence change replaces aspartic acid, which is acidic and polar, with asparagine, which is neutral and polar, at codon 889 of the CDH2 protein (p.Asp889Asn). This variant is present in population databases (rs200373316, gnomAD 0.006%). This variant has not been reported in the literature in individuals affected with CDH2-related conditions. ClinVar contains an entry for this variant (Variation ID: 1427862). An algorithm developed to predict the effect of missense changes on protein structure and function (PolyPhen-2) suggests that this variant is likely to be disruptive. 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

Dec 01, 2020

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.2665G>A (p.D889N) alteration is located in exon 16 (coding exon 16) of the CDH2 gene. This alteration results from a G to A substitution at nucleotide position 2665, causing the aspartic acid (D) at amino acid position 889 to be replaced by an asparagine (N). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.33

BayesDel_addAF

Benign

-0.14

BayesDel_noAF

Benign

-0.26

CADD

Pathogenic

DANN

Uncertain

1.0

DEOGEN2

Benign

0.39

T;.

Eigen

Uncertain

0.67

Eigen_PC

Pathogenic

0.68

FATHMM_MKL

Pathogenic

0.97

LIST_S2

Uncertain

0.95

D;D

M_CAP

Benign

0.084

MetaRNN

Uncertain

0.54

D;D

MetaSVM

Uncertain

-0.0044

MutationAssessor

Benign

1.4

L;.

PrimateAI

Pathogenic

0.88

PROVEAN

Uncertain

-3.5

D;D

REVEL

Uncertain

0.52

Sift

Uncertain

0.019

D;D

Sift4G

Uncertain

0.031

D;D

Polyphen

1.0

D;.

Vest4

0.35

MVP

0.84

MPC

0.99

ClinPred

0.92

GERP RS

5.4

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.1

Varity_R

0.57

gMVP

0.78

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

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