5-140795034-T-C

Variant summary

Our verdict is Uncertain significance. Variant got 0 ACMG points: 0P and 0B.

The NM_018905.3(PCDHA2):c.70T>C(p.Trp24Arg) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000579 in 1,613,712 control chromosomes in the GnomAD database, including 2 homozygotes. 11/19 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.00022 ( 1 hom., cov: 33)

Exomes 𝑓: 0.00062 ( 1 hom. )

Consequence

PCDHA2
NM_018905.3 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 0.278

Variant links:

Genes affected

PCDHA2 (HGNC:8668): (protocadherin alpha 2) This gene is a member of the protocadherin alpha gene cluster, one of three related gene clusters tandemly linked on chromosome five that demonstrate an unusual genomic organization similar to that of B-cell and T-cell receptor gene clusters. The alpha gene cluster is composed of 15 cadherin superfamily genes related to the mouse CNR genes and consists of 13 highly similar and 2 more distantly related coding sequences. The tandem array of 15 N-terminal exons, or variable exons, are followed by downstream C-terminal exons, or constant exons, which are shared by all genes in the cluster. The large, uninterrupted N-terminal exons each encode six cadherin ectodomains while the C-terminal exons encode the cytoplasmic domain. These neural cadherin-like cell adhesion proteins are integral plasma membrane proteins that most likely play a critical role in the establishment and function of specific cell-cell connections in the brain. Alternative splicing has been observed and additional variants have been suggested but their full-length nature has yet to be determined. [provided by RefSeq, Jul 2008]

PCDHA2 links:

PCDHA1 (HGNC:8663): (protocadherin alpha 1) This gene is a member of the protocadherin alpha gene cluster, one of three related gene clusters tandemly linked on chromosome five that demonstrate an unusual genomic organization similar to that of B-cell and T-cell receptor gene clusters. The alpha gene cluster is composed of 15 cadherin superfamily genes related to the mouse CNR genes and consists of 13 highly similar and 2 more distantly related coding sequences. The tandem array of 15 N-terminal exons, or variable exons, are followed by downstream C-terminal exons, or constant exons, which are shared by all genes in the cluster. The large, uninterrupted N-terminal exons each encode six cadherin ectodomains while the C-terminal exons encode the cytoplasmic domain. These neural cadherin-like cell adhesion proteins are integral plasma membrane proteins that most likely play a critical role in the establishment and function of specific cell-cell connections in the brain. Alternative splicing has been observed and additional variants have been suggested but their full-length nature has yet to be determined. [provided by RefSeq, Jul 2008]

PCDHA1 links:

(HGNC:):

links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 0 ACMG points.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
PCDHA2	NM_018905.3 linkuse as main transcript	c.70T>C	p.Trp24Arg	missense_variant	1/4	ENST00000526136.2
PCDHA1	NM_018900.4 linkuse as main transcript	c.2394+6350T>C		intron_variant		ENST00000504120.4

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
PCDHA2	ENST00000526136.2 linkuse as main transcript	c.70T>C	p.Trp24Arg	missense_variant	1/4	1	NM_018905.3	P1	Q9Y5H9-1
PCDHA1	ENST00000504120.4 linkuse as main transcript	c.2394+6350T>C		intron_variant		1	NM_018900.4	P1	Q9Y5I3-1
	ENST00000655235.1 linkuse as main transcript	n.658-6180A>G		intron_variant, non_coding_transcript_variant

Frequencies

GnomAD3 genomes

AF:

0.000217

AC:

AN:

152234

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000169

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:

0.000382

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.000220

AC:

AN:

250314

Hom.:

AF XY:

0.000170

AC XY:

AN XY:

135660

show subpopulations

Gnomad AFR exome

AF:

0.0000634

Gnomad AMR exome

AF:

0.0000578

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.0000924

Gnomad NFE exome

AF:

0.000442

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.000617

AC:

902

AN:

1461478

Hom.:

Cov.:

AF XY:

0.000580

AC XY:

422

AN XY:

727054

show subpopulations

Gnomad4 AFR exome

AF:

0.0000896

Gnomad4 AMR exome

AF:

0.0000671

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.000113

Gnomad4 NFE exome

AF:

0.000768

Gnomad4 OTH exome

AF:

0.000596

GnomAD4 genome

AF:

0.000217

AC:

AN:

152234

Hom.:

Cov.:

AF XY:

0.000202

AC XY:

AN XY:

74372

show subpopulations

Gnomad4 AFR

AF:

0.000169

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:

0.000382

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.000458

Hom.:

Bravo

AF:

0.000276

ESP6500AA

AF:

0.000227

AC:

ESP6500EA

AF:

0.000233

AC:

ExAC

AF:

0.000288

AC:

EpiCase

AF:

0.000763

EpiControl

AF:

0.000296

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Jun 22, 2021

The c.70T>C (p.W24R) alteration is located in exon 1 (coding exon 1) of the PCDHA2 gene. This alteration results from a T to C substitution at nucleotide position 70, causing the tryptophan (W) at amino acid position 24 to be replaced by an arginine (R). 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

Uncertain

0.37

BayesDel_addAF

Benign

-0.25

BayesDel_noAF

Benign

-0.27

Cadd

Benign

Dann

Benign

0.59

Eigen

Benign

-0.41

Eigen_PC

Benign

-0.53

FATHMM_MKL

Benign

0.42

LIST_S2

Benign

0.61

T;T;T

M_CAP

Benign

0.045

MetaRNN

Uncertain

0.52

D;D;D

MetaSVM

Benign

-0.76

MutationAssessor

Pathogenic

3.5

H;H;H

MutationTaster

Benign

0.75

D;D;N;N;N

PROVEAN

Pathogenic

-12

D;D;D

REVEL

Benign

0.20

Sift

Uncertain

0.0050

D;D;D

Sift4G

Uncertain

0.0060

D;D;D

Polyphen

0.19

B;B;B

Vest4

0.47

MutPred

0.64

Gain of methylation at W24 (P = 0.0191);Gain of methylation at W24 (P = 0.0191);Gain of methylation at W24 (P = 0.0191);

MVP

0.59

ClinPred

0.35

GERP RS

1.5

Varity_R

0.34

gMVP

0.76

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.010

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