5-140801491-G-A

Variant names:

• chr5-140801491-G-A
• rs138150756
• NM_018906.3:c.294G>A

Variant summary

Our verdict is Benign. Variant got -10 ACMG points: 0P and 10B. BP4_Strong BP6 BP7 BS2

The NM_018906.3(PCDHA3):​c.294G>A​(p.Arg98Arg) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00114 in 1,614,176 control chromosomes in the GnomAD database, including 3 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (no stars).

• Frequency:
  • Genomes: 𝑓 0.00079 (0 hom., cov: 33)
  • Exomes 𝑓: 0.0012 (3 hom.)
• Consequence: PCDHA3 NM_018906.3 synonymous
• Clinical Significance: Likely benign no assertion criteria provided B:1
• Conservation: PhyloP100: -0.00800

Genes affected

PCDHA3 (HGNC:8669): (protocadherin alpha 3) 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 (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]

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]

ENSG00000279726 (HGNC:):

PCDHA@ (HGNC:8662):

ACMG classification

Verdict is Benign. Variant got -10 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.87).
• BP6: Variant 5-140801491-G-A is Benign according to our data. Variant chr5-140801491-G-A is described in ClinVar as [Likely_benign]. Clinvar id is 3039219.Status of the report is no_assertion_criteria_provided, 0 stars.
• BP7: Synonymous conserved (PhyloP=-0.008 with no splicing effect.
• BS2: High Homozygotes in GnomAdExome4 at 3 gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
PCDHA3	NM_018906.3	c.294G>A	p.Arg98Arg	synonymous_variant	Exon 1 of 4	ENST00000522353.3	NP_061729.1
PCDHA1	NM_018900.4	c.2394+12807G>A		intron_variant	Intron 1 of 3	ENST00000504120.4	NP_061723.1
PCDHA2	NM_018905.3	c.2388+4139G>A		intron_variant	Intron 1 of 3	ENST00000526136.2	NP_061728.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
PCDHA3	ENST00000522353.3	c.294G>A	p.Arg98Arg	synonymous_variant	Exon 1 of 4	1	NM_018906.3	ENSP00000429808.2
PCDHA1	ENST00000504120.4	c.2394+12807G>A		intron_variant	Intron 1 of 3	1	NM_018900.4	ENSP00000420840.3
PCDHA2	ENST00000526136.2	c.2388+4139G>A		intron_variant	Intron 1 of 3	1	NM_018905.3	ENSP00000431748.1

Frequencies

GnomAD3 genomes AF: 0.000795 AC: 121 AN: 152282 Hom.: 0 Cov.: 33

Gnomad AFR AF: 0.000169

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.000196

Gnomad ASJ AF: 0.00

Gnomad EAS AF: 0.00

Gnomad SAS AF: 0.000207

Gnomad FIN AF: 0.0000941

Gnomad MID AF: 0.00316

Gnomad NFE AF: 0.00157

Gnomad OTH AF: 0.000478

GnomAD3 exomes AF: 0.000573 AC: 144 AN: 251484 Hom.: 0 AF XY: 0.000640 AC XY: 87 AN XY: 135920

Gnomad AFR exome AF: 0.0000615

Gnomad AMR exome AF: 0.000173

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.00

Gnomad SAS exome AF: 0.000294

Gnomad FIN exome AF: 0.000323

Gnomad NFE exome AF: 0.00103

Gnomad OTH exome AF: 0.000652

GnomAD4 exome AF: 0.00118 AC: 1724 AN: 1461776 Hom.: 3 Cov.: 92 AF XY: 0.00112 AC XY: 814 AN XY: 727190

Gnomad4 AFR exome AF: 0.000179

Gnomad4 AMR exome AF: 0.000179

Gnomad4 ASJ exome AF: 0.0000383

Gnomad4 EAS exome AF: 0.00

Gnomad4 SAS exome AF: 0.000336

Gnomad4 FIN exome AF: 0.000524

Gnomad4 NFE exome AF: 0.00144

Gnomad4 OTH exome AF: 0.000878

GnomAD4 genome AF: 0.000794 AC: 121 AN: 152400 Hom.: 0 Cov.: 33 AF XY: 0.000899 AC XY: 67 AN XY: 74526

Gnomad4 AFR AF: 0.000168

Gnomad4 AMR AF: 0.000196

Gnomad4 ASJ AF: 0.00

Gnomad4 EAS AF: 0.00

Gnomad4 SAS AF: 0.000207

Gnomad4 FIN AF: 0.0000941

Gnomad4 NFE AF: 0.00157

Gnomad4 OTH AF: 0.000473

Alfa AF: 0.00125 Hom.: 0

Bravo AF: 0.000586

EpiCase AF: 0.000981

EpiControl AF: 0.00142

ClinVar

Significance: Likely benign

Submissions summary: Benign:1

Revision: no assertion criteria provided

Submissions by phenotype

PCDHA3-related disorder Benign:1

Mar 07, 2019

PreventionGenetics, part of Exact Sciences

Significance: Likely benign

Review Status: no assertion criteria provided

Collection Method: clinical testing

This variant is classified as likely benign based on ACMG/AMP sequence variant interpretation guidelines (Richards et al. 2015 PMID: 25741868, with internal and published modifications). -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.87
CADD	Benign	8.7
DANN	Benign	0.86

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

Other links and lift over

dbSNP: rs138150756; hg19: chr5-140181076;