rs149310631

Variant summary

Our verdict is Uncertain significance. The variant received 3 ACMG points: 3P and 0B. PM2PP5

The NM_000045.4(ARG1):​c.23T>A​(p.Ile8Lys) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000186 in 1,613,800 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. I8V) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.0000066 ( 0 hom., cov: 32)
Exomes 𝑓: 0.0000014 ( 0 hom. )

Consequence

ARG1
NM_000045.4 missense

Scores

2
10
6

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications P:4U:1

Conservation

PhyloP100: 2.49

Publications

2 publications found
Variant links:
Genes affected
ARG1 (HGNC:663): (arginase 1) Arginase catalyzes the hydrolysis of arginine to ornithine and urea. At least two isoforms of mammalian arginase exist (types I and II) which differ in their tissue distribution, subcellular localization, immunologic crossreactivity and physiologic function. The type I isoform encoded by this gene, is a cytosolic enzyme and expressed predominantly in the liver as a component of the urea cycle. Inherited deficiency of this enzyme results in argininemia, an autosomal recessive disorder characterized by hyperammonemia. Two transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Sep 2011]
ARG1 Gene-Disease associations (from GenCC):
  • arginase deficiency
    Inheritance: AR Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: G2P, Labcorp Genetics (formerly Invitae), Myriad Women’s Health, ClinGen, Orphanet, Ambry Genetics

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 3 ACMG points.

PM2
Very rare variant in population databases, with high coverage;
PP5
Variant 6-131573305-T-A is Pathogenic according to our data. Variant chr6-131573305-T-A is described in ClinVar as Conflicting_classifications_of_pathogenicity. ClinVar VariationId is 1044951.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_000045.4. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.
GeneTranscriptTagsHGVScHGVSpEffectExon RankProteinUniProt
ARG1
NM_000045.4
MANE Select
c.23T>Ap.Ile8Lys
missense
Exon 1 of 8NP_000036.2
ARG1
NM_001244438.2
c.23T>Ap.Ile8Lys
missense
Exon 1 of 8NP_001231367.1P05089-2
ARG1
NM_001369020.1
c.23T>Ap.Ile8Lys
missense
Exon 1 of 6NP_001355949.1A0A5F9ZH78

Ensembl Transcripts

Sel.
GeneTranscriptTagsHGVScHGVSpEffectExon RankProteinUniProt
ARG1
ENST00000368087.8
TSL:1 MANE Select
c.23T>Ap.Ile8Lys
missense
Exon 1 of 8ENSP00000357066.3P05089-1
ARG1
ENST00000356962.2
TSL:1
c.23T>Ap.Ile8Lys
missense
Exon 1 of 8ENSP00000349446.2P05089-2
ARG1
ENST00000875754.1
c.23T>Ap.Ile8Lys
missense
Exon 1 of 8ENSP00000545813.1

Frequencies

GnomAD3 genomes
AF:
0.00000658
AC:
1
AN:
151978
Hom.:
0
Cov.:
32
show subpopulations
Gnomad AFR
AF:
0.0000242
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:
0.00
Gnomad OTH
AF:
0.00
GnomAD2 exomes
AF:
0.00000398
AC:
1
AN:
250988
AF XY:
0.00
show subpopulations
Gnomad AFR exome
AF:
0.0000615
Gnomad AMR exome
AF:
0.00
Gnomad ASJ exome
AF:
0.00
Gnomad EAS exome
AF:
0.00
Gnomad FIN exome
AF:
0.00
Gnomad NFE exome
AF:
0.00
Gnomad OTH exome
AF:
0.00
GnomAD4 exome
AF:
0.00000137
AC:
2
AN:
1461822
Hom.:
0
Cov.:
30
AF XY:
0.00
AC XY:
0
AN XY:
727218
show subpopulations
African (AFR)
AF:
0.0000597
AC:
2
AN:
33474
American (AMR)
AF:
0.00
AC:
0
AN:
44720
Ashkenazi Jewish (ASJ)
AF:
0.00
AC:
0
AN:
26136
East Asian (EAS)
AF:
0.00
AC:
0
AN:
39698
South Asian (SAS)
AF:
0.00
AC:
0
AN:
86258
European-Finnish (FIN)
AF:
0.00
AC:
0
AN:
53414
Middle Eastern (MID)
AF:
0.00
AC:
0
AN:
5768
European-Non Finnish (NFE)
AF:
0.00
AC:
0
AN:
1111960
Other (OTH)
AF:
0.00
AC:
0
AN:
60394
Allele Balance Distribution
Red line indicates average allele balance
Average allele balance: 0.525
Heterozygous variant carriers
0
1
1
2
2
3
0.00
0.20
0.40
0.60
0.80
0.95
Allele balance

Age Distribution

Exome Het
Variant carriers
0
2
4
6
8
10
<30
30-35
35-40
40-45
45-50
50-55
55-60
60-65
65-70
70-75
75-80
>80
Age
GnomAD4 genome
AF:
0.00000658
AC:
1
AN:
151978
Hom.:
0
Cov.:
32
AF XY:
0.00
AC XY:
0
AN XY:
74230
show subpopulations
African (AFR)
AF:
0.0000242
AC:
1
AN:
41388
American (AMR)
AF:
0.00
AC:
0
AN:
15266
Ashkenazi Jewish (ASJ)
AF:
0.00
AC:
0
AN:
3466
East Asian (EAS)
AF:
0.00
AC:
0
AN:
5174
South Asian (SAS)
AF:
0.00
AC:
0
AN:
4810
European-Finnish (FIN)
AF:
0.00
AC:
0
AN:
10574
Middle Eastern (MID)
AF:
0.00
AC:
0
AN:
316
European-Non Finnish (NFE)
AF:
0.00
AC:
0
AN:
67982
Other (OTH)
AF:
0.00
AC:
0
AN:
2090
Allele Balance Distribution
Red line indicates average allele balance
Average allele balance: 0.575
Heterozygous variant carriers
0
0
1
1
2
2
0.00
0.20
0.40
0.60
0.80
0.95
Allele balance
Alfa
AF:
0.00
Hom.:
0
Bravo
AF:
0.00000756
ESP6500AA
AF:
0.000227
AC:
1
ESP6500EA
AF:
0.00
AC:
0
ExAC
AF:
0.00000824
AC:
1

ClinVar

ClinVar submissions as Germline
Significance:Conflicting classifications of pathogenicity
Revision:criteria provided, conflicting classifications
View on ClinVar
Pathogenic
VUS
Benign
Condition
4
-
-
Arginase deficiency (4)
-
1
-
not provided (1)

Computational scores

Source: dbNSFP v4.9

Name
Calibrated prediction
Score
Prediction
AlphaMissense
Pathogenic
0.94
BayesDel_addAF
Uncertain
0.094
D
BayesDel_noAF
Uncertain
0.080
CADD
Benign
21
DANN
Benign
0.93
DEOGEN2
Pathogenic
0.94
D
Eigen
Benign
-0.13
Eigen_PC
Benign
-0.20
FATHMM_MKL
Benign
0.40
N
LIST_S2
Benign
0.70
T
M_CAP
Uncertain
0.14
D
MetaRNN
Uncertain
0.68
D
MetaSVM
Uncertain
0.097
D
MutationAssessor
Uncertain
2.7
M
PhyloP100
2.5
PrimateAI
Benign
0.37
T
PROVEAN
Uncertain
-3.8
D
REVEL
Uncertain
0.59
Sift
Uncertain
0.0010
D
Sift4G
Uncertain
0.0040
D
Polyphen
0.13
B
Vest4
0.69
MVP
0.90
MPC
0.12
ClinPred
0.70
D
GERP RS
5.8
PromoterAI
0.12
Neutral
Varity_R
0.83
gMVP
0.93
Mutation Taster
=6/94
disease causing

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

Other links and lift over

dbSNP: rs149310631; hg19: chr6-131894445; API