dbSNP rs750665891: SOS2:p.Ser238Ser (chr14-50188497-A-C) – ACMG Classification: Benign (-7 pts)

Variant summary

Our verdict is Benign. The variant received -7 ACMG points: 0P and 7B. BP4_ModerateBP7BS2

The NM_006939.4(SOS2):c.714T>G(p.Ser238Ser) variant causes a splice region, synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000833 in 1,440,390 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 3/3 splice prediction tools predict no significant impact on normal splicing. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: not found (cov: 31)

Exomes 𝑓: 0.0000083 ( 0 hom. )

Consequence

SOS2
NM_006939.4 splice_region, synonymous

Scores

Splicing: ADA: 0.0002119

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 0.938

Publications

0 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 -7 ACMG points.

BP4

Computational evidence support a benign effect (BayesDel_noAF=-0.45).

BP7

Synonymous conserved (PhyloP=0.938 with no splicing effect.

BS2

High AC in GnomAdExome4 at 12 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
SOS2	NM_006939.4 link	c.714T>G	p.Ser238Ser	splice_region_variant, synonymous_variant	Exon 5 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.714T>G	p.Ser238Ser	splice_region_variant, synonymous_variant	Exon 5 of 23	1	NM_006939.4	ENSP00000216373.5	Q07890-1
SOS2	ENST00000543680.5 link	c.714T>G	p.Ser238Ser	splice_region_variant, synonymous_variant	Exon 5 of 22	1		ENSP00000445328.1	Q07890-2
SOS2	ENST00000556469.5 link	n.482-5891T>G		intron_variant	Intron 4 of 4	3

Frequencies

GnomAD3 genomes

Cov.:

GnomAD2 exomes

AF:

0.0000168

AC:

AN:

237990

AF XY:

0.0000232

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:

0.00

Gnomad NFE exome

AF:

0.0000362

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.00000833

AC:

AN:

1440390

Hom.:

Cov.:

AF XY:

0.00000976

AC XY:

AN XY:

717326

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

32216

American (AMR)

AF:

0.00

AC:

AN:

39504

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

25660

East Asian (EAS)

AF:

0.00

AC:

AN:

39532

South Asian (SAS)

AF:

0.00

AC:

AN:

83240

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53052

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5628

European-Non Finnish (NFE)

AF:

0.0000109

AC:

AN:

1101940

Other (OTH)

AF:

0.00

AC:

AN:

59618

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.450

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

Cov.:

Alfa

AF:

0.00

Hom.:

Bravo

AF:

0.00000756

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

Noonan syndrome 9

Uncertain:1

Oct 25, 2023

Labcorp Genetics (formerly Invitae), Labcorp

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

This sequence change affects codon 238 of the SOS2 mRNA. It is a 'silent' change, meaning that it does not change the encoded amino acid sequence of the SOS2 protein. It affects a nucleotide within the consensus splice site. This variant is present in population databases (rs750665891, gnomAD 0.004%). This variant has not been reported in the literature in individuals affected with SOS2-related conditions. ClinVar contains an entry for this variant (Variation ID: 565460). Algorithms developed to predict the effect of sequence changes on RNA splicing suggest that this variant is not likely to affect RNA splicing. In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.45

CADD

Benign

(source)

DANN

Benign

0.71

PhyloP100

0.94

Splicing

Name

Calibrated prediction

Score

Prediction

dbscSNV1_ADA

Benign

0.00021

dbscSNV1_RF

Benign

0.034

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

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over