NM_018916.4:c.220C>G

Variant names:

• chr5-141344253-C-G
• rs200564331
• NM_018916.4:c.220C>G

Variant summary

Our verdict is Likely benign. The variant received -2 ACMG points: 0P and 2B. BP4_Moderate

The NM_018916.4(PCDHGA3):​c.220C>G​(p.Leu74Val) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000302 in 1,614,050 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 14/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency:
  • Genomes: 𝑓 0.00026 (0 hom., cov: 33)
  • Exomes 𝑓: 0.00031 (0 hom.)
• Consequence: PCDHGA3 NM_018916.4 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 0.993
• Publications: 2 publications found

Genes affected

PCDHGA3 (HGNC:8701): (protocadherin gamma subfamily A, 3) This gene is a member of the protocadherin gamma gene cluster, one of three related clusters tandemly linked on chromosome five. These gene clusters have an immunoglobulin-like organization, suggesting that a novel mechanism may be involved in their regulation and expression. The gamma gene cluster includes 22 genes divided into 3 subfamilies. Subfamily A contains 12 genes, subfamily B contains 7 genes and 2 pseudogenes, and the more distantly related subfamily C contains 3 genes. The tandem array of 22 large, variable region exons are followed by a constant region, containing 3 exons shared by all genes in the cluster. Each variable region exon encodes the extracellular region, which includes 6 cadherin ectodomains and a transmembrane region. The constant region exons encode the common cytoplasmic region. These neural cadherin-like cell adhesion proteins most likely play a critical role in the establishment and function of specific cell-cell connections in the brain. Alternative splicing has been described for the gamma cluster genes. [provided by RefSeq, Jul 2008]

PCDHGA2 (HGNC:8700): (protocadherin gamma subfamily A, 2) This gene is a member of the protocadherin gamma gene cluster, one of three related clusters tandemly linked on chromosome five. These gene clusters have an immunoglobulin-like organization, suggesting that a novel mechanism may be involved in their regulation and expression. The gamma gene cluster includes 22 genes divided into 3 subfamilies. Subfamily A contains 12 genes, subfamily B contains 7 genes and 2 pseudogenes, and the more distantly related subfamily C contains 3 genes. The tandem array of 22 large, variable region exons are followed by a constant region, containing 3 exons shared by all genes in the cluster. Each variable region exon encodes the extracellular region, which includes 6 cadherin ectodomains and a transmembrane region. The constant region exons encode the common cytoplasmic region. These neural cadherin-like cell adhesion proteins most likely play a critical role in the establishment and function of specific cell-cell connections in the brain. Alternative splicing has been described for the gamma cluster genes. [provided by RefSeq, Jul 2008]

PCDHGA1 (HGNC:8696): (protocadherin gamma subfamily A, 1) This gene is a member of the protocadherin gamma gene cluster, one of three related clusters tandemly linked on chromosome five. These gene clusters have an immunoglobulin-like organization, suggesting that a novel mechanism may be involved in their regulation and expression. The gamma gene cluster includes 22 genes divided into 3 subfamilies. Subfamily A contains 12 genes, subfamily B contains 7 genes and 2 pseudogenes, and the more distantly related subfamily C contains 3 genes. The tandem array of 22 large, variable region exons are followed by a constant region, containing 3 exons shared by all genes in the cluster. Each variable region exon encodes the extracellular region, which includes 6 cadherin ectodomains and a transmembrane region. The constant region exons encode the common cytoplasmic region. These neural cadherin-like cell adhesion proteins most likely play a critical role in the establishment and function of specific cell-cell connections in the brain. Alternative splicing has been described for the gamma cluster genes. [provided by RefSeq, Jul 2008]

PCDHG@ (HGNC:8695):

ACMG classification

Our verdict: Likely_benign. The variant received -2 ACMG points.

• BP4: Computational evidence support a benign effect (MetaRNN=0.107876986).

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_018916.4. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	PCDHGA3	NM_018916.4	MANE Select	c.220C>G	p.Leu74Val	missense	Exon 1 of 4	NP_061739.2
	PCDHGA2	NM_018915.4	MANE Select	c.2424+2858C>G		intron	N/A	NP_061738.1	Q9Y5H1-1
	PCDHGA1	NM_018912.3	MANE Select	c.2421+11148C>G		intron	N/A	NP_061735.1	Q9Y5H4-1

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	PCDHGA3	ENST00000253812.8	TSL:1 MANE Select	c.220C>G	p.Leu74Val	missense	Exon 1 of 4	ENSP00000253812.7	Q9Y5H0-1
	PCDHGA2	ENST00000394576.3	TSL:1 MANE Select	c.2424+2858C>G		intron	N/A	ENSP00000378077.2	Q9Y5H1-1
	PCDHGA1	ENST00000517417.3	TSL:1 MANE Select	c.2421+11148C>G		intron	N/A	ENSP00000431083.1	Q9Y5H4-1

Frequencies

GnomAD3 genomes AF: 0.000256 AC: 39 AN: 152226 Hom.: 0 Cov.: 33

Gnomad AFR AF: 0.000121

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.000196

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: 0.000441

Gnomad OTH AF: 0.000478

GnomAD2 exomes AF: 0.000216 AC: 54 AN: 249954 AF XY: 0.000236

Gnomad AFR exome AF: 0.0000644

Gnomad AMR exome AF: 0.000347

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.00

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.000336

Gnomad OTH exome AF: 0.000495

GnomAD4 exome AF: 0.000306 AC: 448 AN: 1461706 Hom.: 0 Cov.: 31 AF XY: 0.000297 AC XY: 216 AN XY: 727140

African (AFR) AF: 0.0000896 AC: 3 AN: 33480

American (AMR) AF: 0.000291 AC: 13 AN: 44724

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26132

East Asian (EAS) AF: 0.00 AC: 0 AN: 39700

South Asian (SAS) AF: 0.00 AC: 0 AN: 86258

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 53400

Middle Eastern (MID) AF: 0.000173 AC: 1 AN: 5766

European-Non Finnish (NFE) AF: 0.000380 AC: 422 AN: 1111872

Other (OTH) AF: 0.000149 AC: 9 AN: 60374

GnomAD4 genome AF: 0.000256 AC: 39 AN: 152344 Hom.: 0 Cov.: 33 AF XY: 0.000161 AC XY: 12 AN XY: 74488

African (AFR) AF: 0.000120 AC: 5 AN: 41586

American (AMR) AF: 0.000196 AC: 3 AN: 15306

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 3468

East Asian (EAS) AF: 0.00 AC: 0 AN: 5182

South Asian (SAS) AF: 0.00 AC: 0 AN: 4832

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 10624

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 294

European-Non Finnish (NFE) AF: 0.000441 AC: 30 AN: 68024

Other (OTH) AF: 0.000473 AC: 1 AN: 2116

Alfa AF: 0.000245 Hom.: 0

Bravo AF: 0.000230

ESP6500AA AF: 0.00 AC: 0

ESP6500EA AF: 0.000233 AC: 2

ExAC AF: 0.000239 AC: 29

EpiCase AF: 0.000218

EpiControl AF: 0.000474

ClinVar

ClinVar submissions

Significance: Uncertain significance

Revision: criteria provided, single submitter

Pathogenic	VUS	Benign	Condition
-	1	-	not specified (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.14
BayesDel_addAF	Benign	-0.42	T
BayesDel_noAF	Benign	-0.52
CADD	Benign	21
DANN	Benign	0.93
DEOGEN2	Benign	0.016	T
Eigen	Benign	-0.099
Eigen_PC	Benign	-0.12
FATHMM_MKL	Benign	0.72	D
LIST_S2	Uncertain	0.88	D
M_CAP	Benign	0.027	D
MetaRNN	Benign	0.11	T
MetaSVM	Benign	-0.81	T
MutationAssessor	Uncertain	2.7	M
PhyloP100		0.99
PROVEAN	Benign	-2.3	N
REVEL	Benign	0.22
Sift	Uncertain	0.016	D
Sift4G	Uncertain	0.024	D
Polyphen		0.43	B
Vest4		0.043
MVP		0.65
MPC		0.96
ClinPred		0.044	T
GERP RS		4.8
PromoterAI		-0.062	Neutral
Varity_R		0.15
gMVP		0.34
Mutation Taster		=100/0	polymorphism

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

Other links and lift over

dbSNP: rs200564331; hg19: chr5-140723820;