chr14-50188589-C-A

Position:

chr14-50188589-C-A

Variant summary

Our verdict is Likely benign. Variant got -5 ACMG points: 2P and 7B. PM1BP4_ModerateBP6BS2

The NM_006939.4(SOS2):c.622G>T(p.Ala208Ser) variant causes a missense change. The variant allele was found at a frequency of 0.0000261 in 1,606,962 control chromosomes in the GnomAD database, with no homozygous occurrence. 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 Conflicting classifications of pathogenicity (no stars). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. A208T) has been classified as Benign.

Frequency

Genomes: 𝑓 0.000053 ( 0 hom., cov: 31)

Exomes 𝑓: 0.000023 ( 0 hom. )

Consequence

SOS2
NM_006939.4 missense

Scores

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:2B:1

Conservation

PhyloP100: 6.15

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 Likely_benign. Variant got -5 ACMG points.

PM1

In a domain DH (size 190) in uniprot entity SOS2_HUMAN there are 4 pathogenic changes around while only 0 benign (100%) in NM_006939.4

BP4

Computational evidence support a benign effect (MetaRNN=0.17052051).

BP6

Variant 14-50188589-C-A is Benign according to our data. Variant chr14-50188589-C-A is described in ClinVar as [Conflicting_classifications_of_pathogenicity]. Clinvar id is 542398.We mark this variant Likely_benign, oryginal submissions are: {Benign=1, Uncertain_significance=2}.

BS2

High AC in GnomAd4 at 8 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
SOS2	NM_006939.4 linkuse as main transcript	c.622G>T	p.Ala208Ser	missense_variant	5/23	ENST00000216373.10	NP_008870.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
SOS2	ENST00000216373.10 linkuse as main transcript	c.622G>T	p.Ala208Ser	missense_variant	5/23	1	NM_006939.4	ENSP00000216373	P1	Q07890-1
SOS2	ENST00000543680.5 linkuse as main transcript	c.622G>T	p.Ala208Ser	missense_variant	5/22	1		ENSP00000445328		Q07890-2
SOS2	ENST00000556469.5 linkuse as main transcript	n.482-5983G>T		intron_variant, non_coding_transcript_variant		3

Frequencies

GnomAD3 genomes

AF:

0.0000526

AC:

AN:

152060

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000724

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.000578

Gnomad SAS

AF:

0.000207

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000147

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000366

AC:

AN:

245786

Hom.:

AF XY:

0.0000301

AC XY:

AN XY:

133054

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.000389

Gnomad SAS exome

AF:

0.0000676

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000234

AC:

AN:

1454784

Hom.:

Cov.:

AF XY:

0.0000221

AC XY:

AN XY:

723930

show subpopulations

Gnomad4 AFR exome

AF:

0.0000605

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.000278

Gnomad4 SAS exome

AF:

0.0000704

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00000271

Gnomad4 OTH exome

AF:

0.000199

GnomAD4 genome

AF:

0.0000526

AC:

AN:

152178

Hom.:

Cov.:

AF XY:

0.0000806

AC XY:

AN XY:

74402

show subpopulations

Gnomad4 AFR

AF:

0.0000722

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.000580

Gnomad4 SAS

AF:

0.000208

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000147

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.0000682

Hom.:

ExAC

AF:

0.0000247

AC:

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Uncertain:2Benign:1

Revision: criteria provided, conflicting classifications

LINK: link

Submissions by phenotype

Noonan syndrome 9

Uncertain:1Benign:1

Benign, criteria provided, single submitter	clinical testing	Labcorp Genetics (formerly Invitae), Labcorp	Jan 06, 2024	- -
Uncertain significance, criteria provided, single submitter	clinical testing	Genome-Nilou Lab	-	- -

not specified

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

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

Jan 17, 2022

Variant summary: SOS2 c.622G>T (p.Ala208Ser) results in a conservative amino acid change located in the Dbl homology (DH) domain of the encoded protein sequence. Four of five in-silico tools predict a benign effect of the variant on protein function. The variant allele was found at a frequency of 3.7e-05 in 245786 control chromosomes. The available data on variant occurrences in the general population are insufficient to allow any conclusion about variant significance. c.622G>T has been reported in the literature as a maternally inherited VUS in an individual affected with pediatric heart disease (example, Reuter_2020). These report(s) do 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. One clinical diagnostic laboratory has submitted clinical-significance assessments for this variant to ClinVar after 2014 without evidence for independent evaluation and classified the variant as uncertain significance. Based on the evidence outlined above, the variant was classified as uncertain significance. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.092

BayesDel_addAF

Benign

-0.12

BayesDel_noAF

Benign

-0.10

CADD

Benign

DANN

Uncertain

0.99

DEOGEN2

Benign

0.20

T;.

Eigen

Benign

0.042

Eigen_PC

Uncertain

0.23

FATHMM_MKL

Pathogenic

0.99

LIST_S2

Uncertain

0.94

D;D

M_CAP

Benign

0.021

MetaRNN

Benign

0.17

T;T

MetaSVM

Benign

-0.88

MutationAssessor

Benign

1.9

L;L

MutationTaster

Benign

1.0

D;D

PrimateAI

Uncertain

0.64

PROVEAN

Benign

-0.40

N;N

REVEL

Benign

0.15

Sift

Benign

0.71

T;T

Sift4G

Benign

0.71

T;T

Polyphen

0.056

B;.

Vest4

0.65

MutPred

0.34

Gain of disorder (P = 0.0341);Gain of disorder (P = 0.0341);

MVP

0.63

MPC

0.56

ClinPred

0.14

GERP RS

5.6

Varity_R

0.080

gMVP

0.26

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