14-50118391-G-A

Variant names:

Variant summary

Our verdict is Benign. Variant got -16 ACMG points: 0P and 16B. BP4_StrongBP6_Very_StrongBS2

The NM_006939.4(SOS2):c.3952C>T(p.Pro1318Ser) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000765 in 1,614,102 control chromosomes in the GnomAD database, including 1 homozygotes. In-silico tool predicts a benign outcome for this variant. 13/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★★).

Frequency

Genomes: 𝑓 0.00051 ( 0 hom., cov: 32)

Exomes 𝑓: 0.00079 ( 1 hom. )

Consequence

SOS2
NM_006939.4 missense

Scores

Clinical Significance

Benign/Likely benign criteria provided, multiple submitters, no conflicts B:7

Conservation

PhyloP100: 2.63

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 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -16 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.014707029).

BP6

Variant 14-50118391-G-A is Benign according to our data. Variant chr14-50118391-G-A is described in ClinVar as [Likely_benign]. Clinvar id is 475758.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

BS2

High AC in GnomAd4 at 77 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
SOS2	NM_006939.4 link	c.3952C>T	p.Pro1318Ser	missense_variant	Exon 23 of 23	ENST00000216373.10	NP_008870.2	Q07890-1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
SOS2	ENST00000216373.10 link	c.3952C>T	p.Pro1318Ser	missense_variant	Exon 23 of 23	1	NM_006939.4	ENSP00000216373.5		Q07890-1
SOS2	ENST00000543680.5 link	c.3853C>T	p.Pro1285Ser	missense_variant	Exon 22 of 22	1		ENSP00000445328.1		Q07890-2

Frequencies

GnomAD3 genomes

AF:

0.000506

AC:

AN:

152124

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000290

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000524

Gnomad ASJ

AF:

0.000288

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.000823

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.000497

AC:

125

AN:

251440

Hom.:

AF XY:

0.000552

AC XY:

AN XY:

135886

show subpopulations

Gnomad AFR exome

AF:

0.000246

Gnomad AMR exome

AF:

0.000231

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.0000327

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.000950

Gnomad OTH exome

AF:

0.000652

GnomAD4 exome

AF:

0.000792

AC:

1158

AN:

1461860

Hom.:

Cov.:

AF XY:

0.000796

AC XY:

579

AN XY:

727234

show subpopulations

Gnomad4 AFR exome

AF:

0.000179

Gnomad4 AMR exome

AF:

0.000201

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.0000232

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.000993

Gnomad4 OTH exome

AF:

0.000613

GnomAD4 genome

AF:

0.000506

AC:

AN:

152242

Hom.:

Cov.:

AF XY:

0.000484

AC XY:

AN XY:

74438

show subpopulations

Gnomad4 AFR

AF:

0.000289

Gnomad4 AMR

AF:

0.000523

Gnomad4 ASJ

AF:

0.000288

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.000823

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.000748

Hom.:

Bravo

AF:

0.000506

TwinsUK

AF:

0.00189

AC:

ALSPAC

AF:

0.000519

AC:

ESP6500AA

AF:

0.000454

AC:

ESP6500EA

AF:

0.00128

AC:

ExAC

AF:

0.000601

AC:

Asia WGS

AF:

0.000289

AC:

AN:

3478

EpiCase

AF:

0.000600

EpiControl

AF:

0.000889

ClinVar

Significance: Benign/Likely benign

Submissions summary: Benign:7

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

Noonan syndrome 9

Benign:2

Jan 22, 2025

Labcorp Genetics (formerly Invitae), Labcorp

Significance: Likely 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

Dec 15, 2020

GeneDx

Significance: Benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Apr 01, 2023

CeGaT Center for Human Genetics Tuebingen

Significance: Benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

SOS2: BP4, BS1, BS2 -

not specified

Benign:1

May 15, 2023

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

Significance: Benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

Variant summary: SOS2 c.3952C>T (p.Pro1318Ser) results in a non-conservative amino acid change in the encoded protein sequence. Three of five in-silico tools predict a damaging effect of the variant on protein function. The variant allele was found at a frequency of 0.0005 in 251440 control chromosomes, predominantly at a frequency of 0.00095 within the Non-Finnish European subpopulation in the gnomAD database. The observed variant frequency within Non-Finnish European control individuals in the gnomAD database is approximately 380 fold of the estimated maximal expected allele frequency for a pathogenic variant in SOS2 causing Noonan Syndrome And Related Conditions phenotype (2.5e-06), strongly suggesting that the variant is a benign polymorphism found primarily in populations of Non-Finnish European origin. c.3952C>T has been reported in the literature in an individual affected with Noonan Syndrome and Related Conditions, without strong evidence for causality (Cordeddu_2015). This report does not provide unequivocal conclusions about association of the variant with Noonan Syndrome and Related Conditions. To our knowledge, no experimental evidence demonstrating an impact on protein function has been reported. The following publication has been ascertained in the context of this evaluation (PMID: 26173643). Three clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar after 2014 and all laboratories classified the variant as benign/likely benign. Based on the evidence outlined above, the variant was classified as benign. -

SOS2-related disorder

Benign:1

Sep 30, 2020

PreventionGenetics, part of Exact Sciences

Significance: Benign

Review Status: no assertion criteria provided

Collection Method: clinical testing

This variant is classified as benign based on ACMG/AMP sequence variant interpretation guidelines (Richards et al. 2015 PMID: 25741868, with internal and published modifications). -

Cardiovascular phenotype

Benign:1

Jan 09, 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. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.079

BayesDel_addAF

Benign

-0.27

BayesDel_noAF

Benign

-0.17

CADD

Benign

DANN

Benign

0.88

DEOGEN2

Uncertain

0.46

T;.

Eigen

Uncertain

0.38

Eigen_PC

Uncertain

0.41

FATHMM_MKL

Uncertain

0.97

LIST_S2

Benign

0.75

T;T

M_CAP

Benign

0.036

MetaRNN

Benign

0.015

T;T

MetaSVM

Benign

-0.34

MutationAssessor

Benign

1.2

L;.

PrimateAI

Benign

0.42

PROVEAN

Uncertain

-2.6

D;D

REVEL

Uncertain

0.31

Sift

Benign

0.77

T;T

Sift4G

Benign

0.18

T;T

Polyphen

0.99

D;.

Vest4

0.11

MVP

0.56

MPC

0.33

ClinPred

0.046

GERP RS

5.4

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.7

Varity_R

0.15

gMVP

0.25

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.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over