rs74315433

Variant summary

Our verdict is Benign. Variant got -20 ACMG points: 0P and 20B. BP4_StrongBP6_Very_StrongBS1BS2

The NM_014588.6(VSX1):​c.479G>T​(p.Gly160Val) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000598 in 1,612,800 control chromosomes in the GnomAD database, including 12 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. G160D) has been classified as Likely benign.

Frequency

Genomes: 𝑓 0.00053 ( 1 hom., cov: 32)
Exomes 𝑓: 0.00060 ( 11 hom. )

Consequence

VSX1
NM_014588.6 missense

Scores

6
12

Clinical Significance

Benign/Likely benign criteria provided, multiple submitters, no conflicts B:2

Conservation

PhyloP100: 1.39
Variant links:
Genes affected
VSX1 (HGNC:12723): (visual system homeobox 1) The protein encoded by this gene contains a paired-like homeodomain and binds to the core of the locus control region of the red/green visual pigment gene cluster. The encoded protein may regulate expression of the cone opsin genes early in development. Mutations in this gene can cause posterior polymorphous corneal dystrophy and keratoconus. Alternatively spliced transcript variants encoding different isoforms have been described. [provided by RefSeq, Jul 2008]

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ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -20 ACMG points.

BP4
Computational evidence support a benign effect (MetaRNN=0.009346396).
BP6
Variant 20-25079460-C-A is Benign according to our data. Variant chr20-25079460-C-A is described in ClinVar as [Likely_benign]. Clinvar id is 337962.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.
BS1
Variant frequency is greater than expected in population eas. gnomad4_exome allele frequency = 0.000605 (883/1460580) while in subpopulation EAS AF= 0.0193 (768/39692). AF 95% confidence interval is 0.0182. There are 11 homozygotes in gnomad4_exome. There are 420 alleles in male gnomad4_exome subpopulation. Median coverage is 31. This position pass quality control queck.
BS2
High AC in GnomAd4 at 81 AD gene.

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect Exon rank MANE Protein UniProt
VSX1NM_014588.6 linkc.479G>T p.Gly160Val missense_variant Exon 2 of 5 ENST00000376709.9 NP_055403.2 Q9NZR4-1

Ensembl

Gene Transcript HGVSc HGVSp Effect Exon rank TSL MANE Protein Appris UniProt
VSX1ENST00000376709.9 linkc.479G>T p.Gly160Val missense_variant Exon 2 of 5 1 NM_014588.6 ENSP00000365899.3 Q9NZR4-1

Frequencies

GnomAD3 genomes
AF:
0.000539
AC:
82
AN:
152102
Hom.:
1
Cov.:
32
show subpopulations
Gnomad AFR
AF:
0.00
Gnomad AMI
AF:
0.00
Gnomad AMR
AF:
0.000196
Gnomad ASJ
AF:
0.00
Gnomad EAS
AF:
0.0148
Gnomad SAS
AF:
0.00
Gnomad FIN
AF:
0.00
Gnomad MID
AF:
0.00
Gnomad NFE
AF:
0.0000294
Gnomad OTH
AF:
0.00
GnomAD3 exomes
AF:
0.00101
AC:
251
AN:
249512
Hom.:
2
AF XY:
0.000845
AC XY:
114
AN XY:
134874
show subpopulations
Gnomad AFR exome
AF:
0.00
Gnomad AMR exome
AF:
0.000145
Gnomad ASJ exome
AF:
0.00
Gnomad EAS exome
AF:
0.0122
Gnomad SAS exome
AF:
0.000430
Gnomad FIN exome
AF:
0.00
Gnomad NFE exome
AF:
0.0000443
Gnomad OTH exome
AF:
0.000491
GnomAD4 exome
AF:
0.000605
AC:
883
AN:
1460580
Hom.:
11
Cov.:
31
AF XY:
0.000578
AC XY:
420
AN XY:
726502
show subpopulations
Gnomad4 AFR exome
AF:
0.00
Gnomad4 AMR exome
AF:
0.000202
Gnomad4 ASJ exome
AF:
0.00
Gnomad4 EAS exome
AF:
0.0193
Gnomad4 SAS exome
AF:
0.000547
Gnomad4 FIN exome
AF:
0.00
Gnomad4 NFE exome
AF:
0.0000225
Gnomad4 OTH exome
AF:
0.000564
GnomAD4 genome
AF:
0.000532
AC:
81
AN:
152220
Hom.:
1
Cov.:
32
AF XY:
0.000618
AC XY:
46
AN XY:
74410
show subpopulations
Gnomad4 AFR
AF:
0.00
Gnomad4 AMR
AF:
0.000196
Gnomad4 ASJ
AF:
0.00
Gnomad4 EAS
AF:
0.0147
Gnomad4 SAS
AF:
0.00
Gnomad4 FIN
AF:
0.00
Gnomad4 NFE
AF:
0.0000294
Gnomad4 OTH
AF:
0.00
Alfa
AF:
0.00238
Hom.:
2
Bravo
AF:
0.000710
ExAC
AF:
0.00119
AC:
145
Asia WGS
AF:
0.00491
AC:
17
AN:
3478
EpiCase
AF:
0.00
EpiControl
AF:
0.000119

ClinVar

Significance: Benign/Likely benign
Submissions summary: Benign:2
Revision: criteria provided, multiple submitters, no conflicts
LINK: link

Submissions by phenotype

Posterior polymorphous corneal dystrophy Benign:1
Apr 27, 2017
Illumina Laboratory Services, Illumina
Significance: Likely benign
Review Status: criteria provided, single submitter
Collection Method: clinical testing

This variant was observed as part of a predisposition screen in an ostensibly healthy population. A literature search was performed for the gene, cDNA change, and amino acid change (where applicable). Publications were found based on this search. The evidence from the literature, in combination with allele frequency data from public databases where available, was sufficient to determine this variant is unlikely to cause disease. Therefore, this variant is classified as likely benign. -

not provided Benign:1
Jun 11, 2024
Labcorp Genetics (formerly Invitae), Labcorp
Significance: Benign
Review Status: criteria provided, single submitter
Collection Method: clinical testing

- -

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
AlphaMissense
Benign
0.13
BayesDel_addAF
Benign
-0.19
T
BayesDel_noAF
Uncertain
-0.040
CADD
Benign
17
DANN
Uncertain
0.97
DEOGEN2
Benign
0.15
.;.;T;.
Eigen
Benign
-0.15
Eigen_PC
Benign
-0.040
FATHMM_MKL
Benign
0.51
D
LIST_S2
Benign
0.37
T;T;T;T
MetaRNN
Benign
0.0093
T;T;T;T
MetaSVM
Uncertain
-0.018
T
MutationAssessor
Uncertain
2.2
M;M;M;M
PrimateAI
Benign
0.48
T
PROVEAN
Uncertain
-2.5
D;D;D;D
REVEL
Uncertain
0.43
Sift
Benign
0.12
T;T;T;T
Sift4G
Benign
0.20
T;T;T;T
Polyphen
0.53
P;B;B;B
Vest4
0.35
MVP
0.92
MPC
0.14
ClinPred
0.018
T
GERP RS
3.7
Varity_R
0.19
gMVP
0.19

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

LitVar

Below is the list of publications found by LitVar. It may be empty.

Other links and lift over

dbSNP: rs74315433; hg19: chr20-25060096; COSMIC: COSV65022201; COSMIC: COSV65022201; API