2-233309263-C-T

Variant names:

Variant summary

Our verdict is Uncertain significance. The variant received 0 ACMG points: 1P and 1B. PP3BS1_Supporting

The NM_000541.5(SAG):c.74C>T(p.Ser25Leu) variant causes a missense, splice region change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000194 in 1,611,910 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 2/3 splice prediction tools predicting alterations to normal splicing. Variant has been reported in ClinVar as Uncertain significance (★★). Synonymous variant affecting the same amino acid position (i.e. S25S) has been classified as Likely pathogenic.

Frequency

Genomes: 𝑓 0.00032 ( 0 hom., cov: 32)

Exomes 𝑓: 0.00018 ( 0 hom. )

Consequence

SAG
NM_000541.5 missense, splice_region

Scores

Splicing: ADA: 0.9894

Clinical Significance

Uncertain significance criteria provided, multiple submitters, no conflicts U:3

Conservation

PhyloP100: 3.24

Publications

3 publications found

Variant links:

Genes affected

SAG (HGNC:10521): (S-antigen visual arrestin) Members of arrestin/beta-arrestin protein family are thought to participate in agonist-mediated desensitization of G-protein-coupled receptors and cause specific dampening of cellular responses to stimuli such as hormones, neurotransmitters, or sensory signals. S-arrestin, also known as S-antigen, is a major soluble photoreceptor protein that is involved in desensitization of the photoactivated transduction cascade. It is expressed in the retina and the pineal gland and inhibits coupling of rhodopsin to transducin in vitro. Additionally, S-arrestin is highly antigenic, and is capable of inducing experimental autoimmune uveoretinitis. Mutations in this gene have been associated with Oguchi disease, a rare autosomal recessive form of night blindness. [provided by RefSeq, Jul 2008]

SAG Gene-Disease associations (from GenCC):

Oguchi disease-1
Inheritance: AR Classification: DEFINITIVE, STRONG Submitted by: PanelApp Australia, Labcorp Genetics (formerly Invitae), G2P
retinitis pigmentosa 47
Inheritance: SD, AD Classification: DEFINITIVE, LIMITED Submitted by: G2P
retinitis pigmentosa 96
Inheritance: AD Classification: STRONG Submitted by: Labcorp Genetics (formerly Invitae)
retinal disorder
Inheritance: AR Classification: MODERATE Submitted by: Ambry Genetics
retinitis pigmentosa
Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
Oguchi disease
Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet

SAG links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 0 ACMG points.

PP3

Splicing predictors support a deleterious effect. Scorers claiming Pathogenic: dbscSNV1_ADA, dbscSNV1_RF. No scorers claiming Uncertain. Scorers claiming Benign: max_spliceai.

BS1

Variant frequency is greater than expected in population amr. GnomAd4 allele frequency = 0.000316 (48/152086) while in subpopulation AMR AF = 0.00223 (34/15276). AF 95% confidence interval is 0.00164. There are 0 homozygotes in GnomAd4. There are 27 alleles in the male GnomAd4 subpopulation. Median coverage is 32. This position passed quality control check. Existence of Clinvar submissions makes me limit the strength of this signal to Supporting

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_000541.5. 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
	SAG	NM_000541.5	MANE Select	c.74C>T	p.Ser25Leu	missense splice_region	Exon 2 of 16	NP_000532.2	P10523

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
SAG	ENST00000409110.6	TSL:5 MANE Select	c.74C>T	p.Ser25Leu	missense splice_region	Exon 2 of 16	ENSP00000386444.1	P10523
SAG	ENST00000462487.5	TSL:1	n.144+1241C>T		intron	N/A
SAG	ENST00000447536.5	TSL:3	c.74C>T	p.Ser25Leu	missense splice_region	Exon 2 of 7	ENSP00000408937.1	E7ESX4

Frequencies

GnomAD3 genomes

AF:

0.000316

AC:

AN:

152086

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000242

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00223

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:

0.000176

Gnomad OTH

AF:

0.000479

GnomAD2 exomes

AF:

0.000197

AC:

AN:

248784

AF XY:

0.000178

show subpopulations

Gnomad AFR exome

AF:

0.000130

Gnomad AMR exome

AF:

0.000696

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.000204

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.000181

AC:

264

AN:

1459824

Hom.:

Cov.:

AF XY:

0.000178

AC XY:

129

AN XY:

726340

show subpopulations

African (AFR)

AF:

0.0000897

AC:

AN:

33444

American (AMR)

AF:

0.000783

AC:

AN:

44688

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26122

East Asian (EAS)

AF:

0.00

AC:

AN:

39652

South Asian (SAS)

AF:

0.0000116

AC:

AN:

86152

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53360

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5758

European-Non Finnish (NFE)

AF:

0.000193

AC:

214

AN:

1110362

Other (OTH)

AF:

0.000182

AC:

AN:

60286

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.460

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Variant carriers

<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:

0.000316

AC:

AN:

152086

Hom.:

Cov.:

AF XY:

0.000364

AC XY:

AN XY:

74268

show subpopulations

African (AFR)

AF:

0.0000242

AC:

AN:

41388

American (AMR)

AF:

0.00223

AC:

AN:

15276

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3470

East Asian (EAS)

AF:

0.00

AC:

AN:

5198

South Asian (SAS)

AF:

0.00

AC:

AN:

4832

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10578

Middle Eastern (MID)

AF:

0.00

AC:

AN:

316

European-Non Finnish (NFE)

AF:

0.000176

AC:

AN:

68030

Other (OTH)

AF:

0.000479

AC:

AN:

2086

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.483

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome Het

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

Alfa

AF:

0.000112

Hom.:

Bravo

AF:

0.000291

TwinsUK

AF:

0.000270

AC:

ALSPAC

AF:

0.00

AC:

ESP6500AA

AF:

0.000265

AC:

ESP6500EA

AF:

0.00

AC:

ExAC

AF:

0.0000828

AC:

EpiCase

AF:

0.000109

EpiControl

AF:

0.000297

ClinVar

ClinVar submissions

Significance:Uncertain significance

Revision:criteria provided, multiple submitters, no conflicts

View on ClinVar

Pathogenic

VUS

Benign

Condition

not provided (2)

SAG-related disorder (1)

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.33

BayesDel_addAF

Benign

-0.30

BayesDel_noAF

Benign

-0.31

CADD

Pathogenic

(source)

DANN

Uncertain

1.0

DEOGEN2

Uncertain

0.65

Eigen

Uncertain

0.34

Eigen_PC

Uncertain

0.38

FATHMM_MKL

Uncertain

0.90

M_CAP

Benign

0.012

MetaRNN

Benign

0.092

MetaSVM

Benign

-1.1

MutationAssessor

Uncertain

2.0

PhyloP100

3.2

PrimateAI

Uncertain

0.56

PROVEAN

Uncertain

-2.7

REVEL

Benign

0.098

Sift

Uncertain

0.0020

Sift4G

Uncertain

0.023

Polyphen

0.99

Vest4

0.70

MVP

0.43

MPC

0.37

ClinPred

0.11

GERP RS

4.5

Varity_R

0.29

gMVP

0.44

Mutation Taster

=66/34

polymorphism

(source)

Splicing

Name

Calibrated prediction

Score

Prediction

dbscSNV1_ADA

Pathogenic

0.99

dbscSNV1_RF

Pathogenic

0.76

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

You must be logged in to view publications. This limit was set because tens of millions (!) of queries from AI bots are generated daily.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Variant Effect in Transcripts

RefSeq Transcripts

Ensembl Transcripts

Frequencies

Age Distribution

Age Distribution

ClinVar

Computational scores

Splicing

Publications

Other links and lift over