rs35396088

Variant names:

Variant summary

Our verdict is Benign. The variant received -19 ACMG points: 0P and 19B. BP4_ModerateBP6_Very_StrongBP7BS1BS2

The NM_006939.4(SOS2):c.816T>C(p.Ser272Ser) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0233 in 1,613,700 control chromosomes in the GnomAD database, including 645 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Benign (★★).

Frequency

Genomes: 𝑓 0.020 ( 75 hom., cov: 32)

Exomes 𝑓: 0.024 ( 570 hom. )

Consequence

SOS2
NM_006939.4 synonymous

Scores

Clinical Significance

Benign criteria provided, multiple submitters, no conflicts B:10

Conservation

PhyloP100: 0.199

Publications

6 publications found

Variant links:

Genes affected

SOS2 (HGNC:11188): (SOS Ras/Rho guanine nucleotide exchange factor 2) This gene encodes a regulatory protein that is involved in the positive regulation of ras proteins. Mutations in this gene are associated with Noonan Syndrome-9. [provided by RefSeq, Jul 2016]

SOS2 Gene-Disease associations (from GenCC):

Noonan syndrome
Inheritance: AD Classification: DEFINITIVE, SUPPORTIVE Submitted by: ClinGen, Orphanet
Noonan syndrome 9
Inheritance: AD Classification: DEFINITIVE, STRONG Submitted by: Genomics England PanelApp, Labcorp Genetics (formerly Invitae), Ambry Genetics, PanelApp Australia, G2P

SOS2 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Benign. The variant received -19 ACMG points.

BP4

Computational evidence support a benign effect (BayesDel_noAF=-0.43).

BP6

Variant 14-50182505-A-G is Benign according to our data. Variant chr14-50182505-A-G is described in ClinVar as Benign. ClinVar VariationId is 475762.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

BP7

Synonymous conserved (PhyloP=0.199 with no splicing effect.

BS1

Variant frequency is greater than expected in population nfe. GnomAd4 allele frequency = 0.0205 (3120/152334) while in subpopulation NFE AF = 0.0258 (1756/68026). AF 95% confidence interval is 0.0248. There are 75 homozygotes in GnomAd4. There are 1732 alleles in the male GnomAd4 subpopulation. Median coverage is 32. This position passed quality control check.

BS2

High AC in GnomAd4 at 3120 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
SOS2	NM_006939.4 link	c.816T>C	p.Ser272Ser	synonymous_variant	Exon 6 of 23	ENST00000216373.10	NP_008870.2	Q07890-1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	UniProt
SOS2	ENST00000216373.10 link	c.816T>C	p.Ser272Ser	synonymous_variant	Exon 6 of 23	1	NM_006939.4	ENSP00000216373.5	Q07890-1
SOS2	ENST00000543680.5 link	c.816T>C	p.Ser272Ser	synonymous_variant	Exon 6 of 22	1		ENSP00000445328.1	Q07890-2
SOS2	ENST00000556469.5 link	n.583T>C		non_coding_transcript_exon_variant	Exon 5 of 5	3

Frequencies

GnomAD3 genomes

AF:

0.0205

AC:

3120

AN:

152216

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00391

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00851

Gnomad ASJ

AF:

0.0138

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00165

Gnomad FIN

AF:

0.0927

Gnomad MID

AF:

0.00633

Gnomad NFE

AF:

0.0258

Gnomad OTH

AF:

0.0143

GnomAD2 exomes

AF:

0.0220

AC:

5525

AN:

251286

AF XY:

0.0220

show subpopulations

Gnomad AFR exome

AF:

0.00375

Gnomad AMR exome

AF:

0.00564

Gnomad ASJ exome

AF:

0.0131

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.0906

Gnomad NFE exome

AF:

0.0264

Gnomad OTH exome

AF:

0.0186

GnomAD4 exome

AF:

0.0236

AC:

34544

AN:

1461366

Hom.:

570

Cov.:

AF XY:

0.0231

AC XY:

16822

AN XY:

726998

show subpopulations

African (AFR)

AF:

0.00341

AC:

114

AN:

33480

American (AMR)

AF:

0.00588

AC:

263

AN:

44720

Ashkenazi Jewish (ASJ)

AF:

0.0136

AC:

355

AN:

26134

East Asian (EAS)

AF:

0.00

AC:

AN:

39686

South Asian (SAS)

AF:

0.00208

AC:

179

AN:

86254

European-Finnish (FIN)

AF:

0.0883

AC:

4712

AN:

53380

Middle Eastern (MID)

AF:

0.00277

AC:

AN:

5768

European-Non Finnish (NFE)

AF:

0.0250

AC:

27769

AN:

1111564

Other (OTH)

AF:

0.0188

AC:

1136

AN:

60380

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.470

Heterozygous variant carriers

1531

3061

4592

6122

7653

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Exome Hom

Variant carriers

1036

2072

3108

4144

5180

<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:

0.0205

AC:

3120

AN:

152334

Hom.:

Cov.:

AF XY:

0.0232

AC XY:

1732

AN XY:

74500

show subpopulations

African (AFR)

AF:

0.00390

AC:

162

AN:

41584

American (AMR)

AF:

0.00850

AC:

130

AN:

15296

Ashkenazi Jewish (ASJ)

AF:

0.0138

AC:

AN:

3472

East Asian (EAS)

AF:

0.00

AC:

AN:

5192

South Asian (SAS)

AF:

0.00166

AC:

AN:

4832

European-Finnish (FIN)

AF:

0.0927

AC:

984

AN:

10610

Middle Eastern (MID)

AF:

0.00680

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.0258

AC:

1756

AN:

68026

Other (OTH)

AF:

0.0142

AC:

AN:

2116

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.499

Heterozygous variant carriers

145

291

436

582

727

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome Het

Genome Hom

Variant carriers

120

160

200

<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:

0.0216

Hom.:

Bravo

AF:

0.0133

Asia WGS

AF:

0.00173

AC:

AN:

3478

EpiCase

AF:

0.0191

EpiControl

AF:

0.0210

ClinVar

Significance: Benign

Submissions summary: Benign:10

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

not specified

Benign:4

Joint Genome Diagnostic Labs from Nijmegen and Maastricht, Radboudumc and MUMC+

Significance:Benign

Review Status:no assertion criteria provided

Collection Method:clinical testing

- -

Clinical Genetics, Academic Medical Center

Significance:Benign

Review Status:no assertion criteria provided

Collection Method:clinical testing

- -

Dec 27, 2018

Laboratory for Molecular Medicine, Mass General Brigham Personalized Medicine

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

p.Ser272Ser in exon 6 of SOS2: This variant is not expected to have clinical significance because it does not alter an amino acid residue, is not located within the splice consensus sequence, and has been identified in 8.61% (568/6600) of Finnish chromosomes by the Exome Aggregation Consortium (ExAC, http://exac.broadinstitute.org; dbSNP rs35396088). -

Mar 01, 2017

GeneDx

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

This variant is considered likely benign or benign based on one or more of the following criteria: it is a conservative change, it occurs at a poorly conserved position in the protein, it is predicted to be benign by multiple in silico algorithms, and/or has population frequency not consistent with disease. -

Noonan syndrome 9

Benign:2

Feb 03, 2025

Labcorp Genetics (formerly Invitae), Labcorp

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Genome-Nilou Lab

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

not provided

Benign:2

Apr 12, 2017

Women's Health and Genetics/Laboratory Corporation of America, LabCorp

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

Variant summary: The SOS2 c.816T>C (p.Ser272Ser) variant involves the alteration of a non-conserved nucleotide, resulting in a synonymous change. One in silico tool predicts a polymorphism outcome for this variant. 5/5 splice prediction tools predict no significant impact on normal splicing. However, these predictions have yet to be confirmed by functional studies. This variant was found in 2546/121094 control chromosomes at a frequency of 0.021025, which is approximately 8410 times the estimated maximal expected allele frequency of a pathogenic SOS2 variant (0.0000025), suggesting this variant is likely a benign polymorphism. The variant of interest has not, to our knowledge, been reported in affected individuals via publications and/or reputable databases/clinical diagnostic laboratories; nor evaluated for functional impact by in vivo/vitro studies. Taken together, this variant is classified as benign. -

Breakthrough Genomics, Breakthrough Genomics

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:not provided

- -

Cardiovascular phenotype

Benign:1

May 17, 2019

Ambry Genetics

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

This alteration is classified as benign based on a combination of the following: seen in unaffected individuals, population frequency, intact protein function, lack of segregation with disease, co-occurrence, RNA analysis, in silico models, amino acid conservation, lack of disease association in case-control studies, and/or the mechanism of disease or impacted region is inconsistent with a known cause of pathogenicity. -

Noonan syndrome and Noonan-related syndrome

Benign:1

Jun 03, 2021

Genome Diagnostics Laboratory, The Hospital for Sick Children

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.43

CADD

Benign

7.2

(source)

DANN

Benign

0.79

PhyloP100

0.20

Mutation Taster

=67/33

polymorphism (auto)

(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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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

Age Distribution

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over