5-140786787-C-A

Variant summary

Our verdict is Uncertain significance. Variant got 2 ACMG points: 2P and 0B. PM2

The NM_018900.4(PCDHA1):c.497C>A(p.Ala166Asp) variant causes a missense change. The variant allele was found at a frequency of 0.0000062 in 1,614,094 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.000013 ( 0 hom., cov: 33)

Exomes 𝑓: 0.0000055 ( 0 hom. )

Consequence

PCDHA1
NM_018900.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 4.13

Variant links:

Genes affected

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 2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE
PCDHA1	NM_018900.4 linkuse as main transcript	c.497C>A	p.Ala166Asp	missense_variant	1/4	ENST00000504120.4
PCDHA1	NM_031410.2 linkuse as main transcript	c.497C>A	p.Ala166Asp	missense_variant	1/1
PCDHA1	NM_031411.3 linkuse as main transcript	c.497C>A	p.Ala166Asp	missense_variant	1/4

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
PCDHA1	ENST00000504120.4 linkuse as main transcript	c.497C>A	p.Ala166Asp	missense_variant	1/4	1	NM_018900.4	P1	Q9Y5I3-1
PCDHA1	ENST00000394633.7 linkuse as main transcript	c.497C>A	p.Ala166Asp	missense_variant	1/4	1			Q9Y5I3-2
	ENST00000655235.1 linkuse as main transcript	n.2725G>T		non_coding_transcript_exon_variant	2/2
PCDHA1	ENST00000378133.4 linkuse as main transcript	c.497C>A	p.Ala166Asp	missense_variant	1/1				Q9Y5I3-3

Frequencies

GnomAD3 genomes

AF:

0.0000131

AC:

AN:

152218

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

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:

0.0000294

Gnomad OTH

AF:

0.00

GnomAD4 exome

AF:

0.00000547

AC:

AN:

1461876

Hom.:

Cov.:

AF XY:

0.00000413

AC XY:

AN XY:

727238

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.00

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:

0.00000719

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

AF:

0.0000131

AC:

AN:

152218

Hom.:

Cov.:

AF XY:

0.0000269

AC XY:

AN XY:

74370

show subpopulations

Gnomad4 AFR

AF:

0.00

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:

0.0000294

Gnomad4 OTH

AF:

0.00

Bravo

AF:

0.00000756

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

Oct 25, 2022

The c.497C>A (p.A166D) alteration is located in exon 1 (coding exon 1) of the PCDHA1 gene. This alteration results from a C to A substitution at nucleotide position 497, causing the alanine (A) at amino acid position 166 to be replaced by an aspartic acid (D). 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

0.50

BayesDel_addAF

Benign

-0.11

BayesDel_noAF

Benign

-0.39

Cadd

Uncertain

Dann

Uncertain

1.0

Eigen

Uncertain

0.26

Eigen_PC

Benign

0.093

FATHMM_MKL

Uncertain

0.92

LIST_S2

Uncertain

0.95

D;D;D

M_CAP

Benign

0.016

MetaRNN

Uncertain

0.70

D;D;D

MetaSVM

Benign

-0.66

MutationAssessor

Uncertain

2.0

M;M;M

MutationTaster

Benign

0.74

D;N;N

PROVEAN

Pathogenic

-4.6

D;D;D

REVEL

Benign

0.21

Sift

Uncertain

0.011

D;D;D

Sift4G

Uncertain

0.016

D;T;D

Polyphen

0.98

D;P;D

Vest4

0.39

MutPred

0.72

Gain of relative solvent accessibility (P = 0.09);Gain of relative solvent accessibility (P = 0.09);Gain of relative solvent accessibility (P = 0.09);

MVP

0.66

MPC

1.0

ClinPred

0.96

GERP RS

4.1

Varity_R

0.57

gMVP

0.31

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