chr5-140801316-A-G

Position:

• chr5-140801316-A-G

Variant summary

Our verdict is Uncertain significance. Variant got 0 ACMG points: 2P and 2B. PM2 BP4_Moderate

The NM_018906.3(PCDHA3):​c.119A>G​(p.Lys40Arg) variant causes a missense change. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency: Genomes: not found (cov: 33)
• Consequence: PCDHA3 NM_018906.3 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 4.49

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]

LOC124901089 (HGNC:):

ACMG classification

Verdict is Uncertain_significance. Variant got 0 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.14257997).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
PCDHA3	NM_018906.3	c.119A>G	p.Lys40Arg	missense_variant	1/4	ENST00000522353.3	NP_061729.1
PCDHA1	NM_018900.4	c.2394+12632A>G		intron_variant		ENST00000504120.4	NP_061723.1
PCDHA2	NM_018905.3	c.2388+3964A>G		intron_variant		ENST00000526136.2	NP_061728.1
LOC124901089	XR_007058969.1	n.3006T>C		non_coding_transcript_exon_variant	2/3

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
PCDHA3	ENST00000522353.3	c.119A>G	p.Lys40Arg	missense_variant	1/4	1	NM_018906.3	ENSP00000429808	P1
PCDHA1	ENST00000504120.4	c.2394+12632A>G		intron_variant		1	NM_018900.4	ENSP00000420840	P1
PCDHA2	ENST00000526136.2	c.2388+3964A>G		intron_variant		1	NM_018905.3	ENSP00000431748	P1
	ENST00000655235.1	n.658-12462T>C		intron_variant, non_coding_transcript_variant

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome Cov.: 91

GnomAD4 genome Cov.: 33

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

not specified Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Apr 08, 2024

The c.119A>G (p.K40R) alteration is located in exon 1 (coding exon 1) of the PCDHA3 gene. This alteration results from a A to G substitution at nucleotide position 119, causing the lysine (K) at amino acid position 40 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	Benign	0.087
BayesDel_addAF	Benign	-0.22	T
BayesDel_noAF	Benign	-0.56
CADD	Uncertain	24
DANN	Uncertain	1.0
DEOGEN2	Benign	0.023	.;T
Eigen	Benign	-0.17
Eigen_PC	Benign	-0.091
FATHMM_MKL	Uncertain	0.78	D
LIST_S2	Benign	0.64	T;T
M_CAP	Benign	0.0087	T
MetaRNN	Benign	0.14	T;T
MetaSVM	Benign	-0.95	T
MutationAssessor	Benign	1.5	L;L
MutationTaster	Benign	1.0	D;D;D;D;N;N
PROVEAN	Uncertain	-2.4	N;N
REVEL	Benign	0.069
Sift	Benign	0.036	D;T
Sift4G	Benign	0.083	T;T
Polyphen		0.016	B;B
Vest4		0.085
MutPred		0.45		Loss of ubiquitination at K40 (P = 0.0224);Loss of ubiquitination at K40 (P = 0.0224);
MVP		0.47
ClinPred		0.82	D
GERP RS		4.7
Varity_R		0.28
gMVP		0.32

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

No publications associated with this variant yet.

Other links and lift over

hg19: chr5-140180901;