chr14-67646644-G-A

Position:

chr14-67646644-G-A

Variant summary

Our verdict is Likely benign. Variant got -2 ACMG points: 2P and 4B. PM2BP4_Strong

The NM_001172.4(ARG2):c.523G>A(p.Val175Ile) variant causes a missense, splice region change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000187 in 1,603,948 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 17/23 in silico tools predict a benign outcome for this variant. 3/3 splice prediction tools predict no significant impact on normal splicing. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.0000066 ( 0 hom., cov: 32)

Exomes 𝑓: 0.0000014 ( 0 hom. )

Consequence

ARG2
NM_001172.4 missense, splice_region

Scores

Splicing: ADA: 0.1063

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 3.10

Variant links:

Genes affected

ARG2 (HGNC:664): (arginase 2) Arginase catalyzes the hydrolysis of arginine to ornithine and urea. At least two isoforms of mammalian arginase exists (types I and II) which differ in their tissue distribution, subcellular localization, immunologic crossreactivity and physiologic function. The type II isoform encoded by this gene, is located in the mitochondria and expressed in extra-hepatic tissues, especially kidney. The physiologic role of this isoform is poorly understood; it is thought to play a role in nitric oxide and polyamine metabolism. Transcript variants of the type II gene resulting from the use of alternative polyadenylation sites have been described. [provided by RefSeq, Jul 2008]

ARG2 links:

GPHN (HGNC:):

GPHN links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.05972472).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
ARG2	NM_001172.4 linkuse as main transcript	c.523G>A	p.Val175Ile	missense_variant, splice_region_variant	5/8	ENST00000261783.4
GPHN	XM_047430879.1 linkuse as main transcript	c.1313-88551G>A		intron_variant

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris
ARG2	ENST00000261783.4 linkuse as main transcript	c.523G>A	p.Val175Ile	missense_variant, splice_region_variant	5/8	1	NM_001172.4	P1
ARG2	ENST00000556491.1 linkuse as main transcript	n.361G>A		splice_region_variant, non_coding_transcript_exon_variant	4/4	5
ARG2	ENST00000557120.5 linkuse as main transcript	n.565G>A		splice_region_variant, non_coding_transcript_exon_variant	5/5	2
ARG2	ENST00000557319.1 linkuse as main transcript	n.197G>A		non_coding_transcript_exon_variant	1/4	2

Frequencies

GnomAD3 genomes

AF:

0.00000657

AC:

AN:

152126

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:

0.0000147

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.00000399

AC:

AN:

250546

Hom.:

AF XY:

0.00000739

AC XY:

AN XY:

135374

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00000881

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.00000138

AC:

AN:

1451822

Hom.:

Cov.:

AF XY:

0.00000277

AC XY:

AN XY:

722908

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:

0.00000181

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

AF:

0.00000657

AC:

AN:

152126

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

74306

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:

0.0000147

Gnomad4 OTH

AF:

0.00

Bravo

AF:

0.0000151

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

Aug 10, 2023

The c.523G>A (p.V175I) alteration is located in exon 5 (coding exon 5) of the ARG2 gene. This alteration results from a G to A substitution at nucleotide position 523, causing the valine (V) at amino acid position 175 to be replaced by an isoleucine (I). 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

0.091

BayesDel_addAF

Benign

-0.20

BayesDel_noAF

Benign

-0.53

CADD

Benign

DANN

Benign

0.85

DEOGEN2

Benign

0.29

Eigen

Benign

-0.19

Eigen_PC

Benign

0.035

FATHMM_MKL

Uncertain

0.95

LIST_S2

Benign

0.71

M_CAP

Benign

0.0086

MetaRNN

Benign

0.060

MetaSVM

Benign

-1.1

MutationAssessor

Benign

-0.015

MutationTaster

Benign

1.0

PrimateAI

Benign

0.38

PROVEAN

Benign

-0.030

REVEL

Benign

0.046

Sift

Benign

0.59

Sift4G

Benign

0.53

Polyphen

0.0

Vest4

0.27

MutPred

0.43

Gain of catalytic residue at L178 (P = 5e-04);

MVP

0.13

MPC

0.14

ClinPred

0.29

GERP RS

5.1

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.7

Varity_R

0.10

gMVP

0.55

Splicing

Name

Calibrated prediction

Score

Prediction

dbscSNV1_ADA

Benign

0.11

dbscSNV1_RF

Benign

0.38

SpliceAI score (max)

0.060

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