NM_018912.3:c.454G>A

Variant names:

• chr5-141331138-G-A
• rs2472647
• NM_018912.3:c.454G>A

Variant summary

Our verdict is Benign. The variant received -12 ACMG points: 0P and 12B. BP4_Strong BA1

The NM_018912.3(PCDHGA1):​c.454G>A​(p.Val152Ile) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.969 in 1,614,178 control chromosomes in the GnomAD database, including 757,973 homozygotes. In-silico tool predicts a benign outcome for this variant. 15/20 in silico tools predict a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

• Frequency:
  • Genomes: 𝑓 0.96 (69968 hom., cov: 32)
  • Exomes 𝑓: 0.97 (688005 hom.)
• Consequence: PCDHGA1 NM_018912.3 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 1.22
• Publications: 25 publications found

Genes affected

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):

ENSG00000294471 (HGNC:):

ACMG classification

Our verdict: Benign. The variant received -12 ACMG points.

• BP4: Computational evidence support a benign effect (MetaRNN=7.3067906E-7).
• BA1: GnomAd4 highest subpopulation (AMR) allele frequency at 95% confidence interval = 0.969 is higher than 0.05.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_018912.3. 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
	PCDHGA1	NM_018912.3	MANE Select	c.454G>A	p.Val152Ile	missense	Exon 1 of 4	NP_061735.1
	PCDHGA1	NM_031993.2		c.454G>A	p.Val152Ile	missense	Exon 1 of 1	NP_114382.1

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	PCDHGA1	ENST00000517417.3	TSL:1 MANE Select	c.454G>A	p.Val152Ile	missense	Exon 1 of 4	ENSP00000431083.1
	PCDHGA1	ENST00000378105.4	TSL:6	c.454G>A	p.Val152Ile	missense	Exon 1 of 1	ENSP00000367345.3
	ENSG00000294471	ENST00000723807.1		n.80-102C>T		intron	N/A

Frequencies

GnomAD3 genomes AF: 0.958 AC: 145813 AN: 152200 Hom.: 69914 Cov.: 32

Gnomad AFR AF: 0.928

Gnomad AMI AF: 0.912

Gnomad AMR AF: 0.977

Gnomad ASJ AF: 0.984

Gnomad EAS AF: 0.877

Gnomad SAS AF: 0.952

Gnomad FIN AF: 0.977

Gnomad MID AF: 0.962

Gnomad NFE AF: 0.975

Gnomad OTH AF: 0.957

GnomAD2 exomes AF: 0.963 AC: 241995 AN: 251214 AF XY: 0.964

Gnomad AFR exome AF: 0.920

Gnomad AMR exome AF: 0.980

Gnomad ASJ exome AF: 0.985

Gnomad EAS exome AF: 0.885

Gnomad FIN exome AF: 0.976

Gnomad NFE exome AF: 0.975

Gnomad OTH exome AF: 0.963

GnomAD4 exome AF: 0.970 AC: 1417724 AN: 1461860 Hom.: 688005 Cov.: 67 AF XY: 0.970 AC XY: 705265 AN XY: 727228

African (AFR) AF: 0.922 AC: 30866 AN: 33480

American (AMR) AF: 0.981 AC: 43852 AN: 44724

Ashkenazi Jewish (ASJ) AF: 0.985 AC: 25732 AN: 26136

East Asian (EAS) AF: 0.837 AC: 33240 AN: 39700

South Asian (SAS) AF: 0.959 AC: 82689 AN: 86258

European-Finnish (FIN) AF: 0.976 AC: 52128 AN: 53396

Middle Eastern (MID) AF: 0.957 AC: 5516 AN: 5766

European-Non Finnish (NFE) AF: 0.976 AC: 1085435 AN: 1112006

Other (OTH) AF: 0.965 AC: 58266 AN: 60394

GnomAD4 genome AF: 0.958 AC: 145923 AN: 152318 Hom.: 69968 Cov.: 32 AF XY: 0.958 AC XY: 71323 AN XY: 74476

African (AFR) AF: 0.928 AC: 38586 AN: 41564

American (AMR) AF: 0.977 AC: 14948 AN: 15304

Ashkenazi Jewish (ASJ) AF: 0.984 AC: 3418 AN: 3472

East Asian (EAS) AF: 0.877 AC: 4548 AN: 5186

South Asian (SAS) AF: 0.952 AC: 4587 AN: 4816

European-Finnish (FIN) AF: 0.977 AC: 10377 AN: 10616

Middle Eastern (MID) AF: 0.963 AC: 283 AN: 294

European-Non Finnish (NFE) AF: 0.975 AC: 66326 AN: 68040

Other (OTH) AF: 0.955 AC: 2018 AN: 2114

Alfa AF: 0.967 Hom.: 290943

Bravo AF: 0.956

TwinsUK AF: 0.974 AC: 3612

ALSPAC AF: 0.977 AC: 3764

ESP6500AA AF: 0.921 AC: 4056

ESP6500EA AF: 0.975 AC: 8385

ExAC AF: 0.961 AC: 116631

Asia WGS AF: 0.911 AC: 3168 AN: 3478

EpiCase AF: 0.974

EpiControl AF: 0.977

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.056
BayesDel_addAF	Benign	-0.73	T
BayesDel_noAF	Benign	-0.67
CADD	Benign	12
DANN	Benign	0.88
DEOGEN2	Benign	0.048	T
Eigen	Benign	-0.89
Eigen_PC	Benign	-0.75
FATHMM_MKL	Benign	0.22	N
LIST_S2	Benign	0.32	T
MetaRNN	Benign	7.3e-7	T
MetaSVM	Benign	-1.0	T
MutationAssessor	Benign	-0.54	N
PhyloP100		1.2
PROVEAN	Benign	0.84	N
REVEL	Benign	0.080
Sift	Benign	0.12	T
Sift4G	Benign	0.077	T
Polyphen		0.0	B
Vest4		0.018
MPC		0.23
ClinPred		0.0024	T
GERP RS		0.075
Varity_R		0.032
gMVP		0.022
Mutation Taster		=100/0	polymorphism (auto)

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.020		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: rs2472647; hg19: chr5-140710705; COSMIC: COSV107483637; COSMIC: COSV107483637;