2-48580809-G-A

Variant names:

Variant summary

Our verdict is Likely benign. The variant received -2 ACMG points: 2P and 4B. PM2BP4_Strong

The NM_006873.4(STON1):c.176G>A(p.Ser59Asn) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000374 in 1,551,654 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 13/22 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.000039 ( 0 hom., cov: 33)

Exomes 𝑓: 0.000037 ( 0 hom. )

Consequence

STON1
NM_006873.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 2.80

Variant links:

Genes affected

STON1 (HGNC:17003): (stonin 1) Endocytosis of cell surface proteins is mediated by a complex molecular machinery that assembles on the inner surface of the plasma membrane. This gene encodes one of two human homologs of the Drosophila melanogaster stoned B protein. This protein is related to components of the endocytic machinery and exhibits a modular structure consisting of an N-terminal proline-rich domain, a central region of homology specific to the human stoned B-like proteins, and a C-terminal region homologous to the mu subunits of adaptor protein (AP) complexes. Read-through transcription of this gene into the neighboring downstream gene, which encodes TFIIA-alpha/beta-like factor, generates a transcript (SALF), which encodes a fusion protein comprised of sequence sharing identity with each individual gene product. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Oct 2010]

STON1 links:

STON1-GTF2A1L (HGNC:30651): (STON1-GTF2A1L readthrough) STON1-GTF2A1L mRNAs are infrequent but naturally occurring read-through products of the neighboring STON1 and GTF2A1L genes. These transcripts encode fusion proteins composed of the vast majority of each of the individual elements, stonin 1 and general transcription factor IIA, 1-like. Alternative splicing results in multiple transcript variants. The significance of these read-through variants and the function of the resulting protein products have not yet been determined. [provided by RefSeq, Oct 2010]

STON1-GTF2A1L links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Likely_benign. The variant received -2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.05324307).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
STON1	NM_006873.4 link	c.176G>A	p.Ser59Asn	missense_variant	Exon 2 of 4	ENST00000404752.6	NP_006864.2	Q9Y6Q2-1B2RB25

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
STON1	ENST00000404752.6 link	c.176G>A	p.Ser59Asn	missense_variant	Exon 2 of 4	1	NM_006873.4	ENSP00000385273.1		Q9Y6Q2-1
STON1-GTF2A1L	ENST00000394754.5 link	c.176G>A	p.Ser59Asn	missense_variant	Exon 2 of 11	1		ENSP00000378236.1		Q53S48

Frequencies

GnomAD3 genomes

AF:

0.0000394

AC:

AN:

152156

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:

0.000471

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.00

Gnomad OTH

AF:

0.000478

GnomAD2 exomes

AF:

0.000111

AC:

AN:

197390

AF XY:

0.0000950

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 FIN exome

AF:

0.000990

Gnomad NFE exome

AF:

0.0000319

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000372

AC:

AN:

1399498

Hom.:

Cov.:

AF XY:

0.0000362

AC XY:

AN XY:

690920

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

31248

American (AMR)

AF:

0.00

AC:

AN:

35114

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

22666

East Asian (EAS)

AF:

0.00

AC:

AN:

38084

South Asian (SAS)

AF:

0.00

AC:

AN:

74420

European-Finnish (FIN)

AF:

0.000909

AC:

AN:

51692

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5506

European-Non Finnish (NFE)

AF:

0.00000462

AC:

AN:

1082836

Other (OTH)

AF:

0.00

AC:

AN:

57932

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.492

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

GnomAD4 genome

AF:

0.0000394

AC:

AN:

152156

Hom.:

Cov.:

AF XY:

0.0000404

AC XY:

AN XY:

74330

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

41438

American (AMR)

AF:

0.00

AC:

AN:

15276

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3472

East Asian (EAS)

AF:

0.00

AC:

AN:

5184

South Asian (SAS)

AF:

0.00

AC:

AN:

4824

European-Finnish (FIN)

AF:

0.000471

AC:

AN:

10614

Middle Eastern (MID)

AF:

0.00

AC:

AN:

316

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

68030

Other (OTH)

AF:

0.000478

AC:

AN:

2092

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.508

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Alfa

AF:

0.00

Hom.:

Bravo

AF:

0.00000756

ExAC

AF:

0.0000495

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

May 11, 2022

Ambry Genetics

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

The c.176G>A (p.S59N) alteration is located in exon 3 (coding exon 1) of the STON1 gene. This alteration results from a G to A substitution at nucleotide position 176, causing the serine (S) at amino acid position 59 to be replaced by an asparagine (N). 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

0.11

BayesDel_addAF

Benign

-0.31

BayesDel_noAF

Benign

-0.65

CADD

Benign

(source)

DANN

Uncertain

0.98

DEOGEN2

Benign

0.091

T;T;T;.;.;.;.

Eigen

Benign

-0.078

Eigen_PC

Benign

-0.048

FATHMM_MKL

Uncertain

0.91

LIST_S2

Benign

0.69

.;.;T;.;T;T;T

M_CAP

Benign

0.0057

MetaRNN

Benign

0.053

T;T;T;T;T;T;T

MetaSVM

Benign

-1.1

MutationAssessor

Uncertain

2.4

M;M;M;.;.;.;.

PhyloP100

2.8

PrimateAI

Uncertain

0.50

PROVEAN

Benign

-0.49

.;N;N;N;N;N;N

REVEL

Benign

0.064

Sift

Uncertain

0.023

.;D;D;D;D;D;D

Sift4G

Benign

0.31

.;T;T;T;T;T;T

Polyphen

0.65

P;P;P;B;.;B;.

Vest4

0.18, 0.18, 0.16, 0.18, 0.17, 0.19

MutPred

0.16

Gain of relative solvent accessibility (P = 0.0082);Gain of relative solvent accessibility (P = 0.0082);Gain of relative solvent accessibility (P = 0.0082);Gain of relative solvent accessibility (P = 0.0082);Gain of relative solvent accessibility (P = 0.0082);Gain of relative solvent accessibility (P = 0.0082);Gain of relative solvent accessibility (P = 0.0082);

MVP

0.35

MPC

0.0038

ClinPred

0.13

GERP RS

3.5

PromoterAI

0.0018

Neutral

(source)

Varity_R

0.051

gMVP

0.34

Mutation Taster

=95/5

polymorphism

(source)

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

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2-48580809-G-A

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over