Genetic Variant SOS1:c.214-10A>G (chr2-39058814-T-C) – ACMG Classification: Benign (-20 pts)

Variant summary

Our verdict is Benign. The variant received -20 ACMG points: 0P and 20B. BP4_StrongBP6_Very_StrongBS1BS2

The NM_005633.4(SOS1):c.214-10A>G variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000379 in 1,609,518 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★★).

Frequency

Genomes: 𝑓 0.00015 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000026 ( 0 hom. )

Consequence

SOS1
NM_005633.4 intron

Scores

Splicing: ADA: 0.0001677

Clinical Significance

Benign/Likely benign criteria provided, multiple submitters, no conflicts B:5

Conservation

PhyloP100: -1.24

Publications

0 publications found

Variant links:

Genes affected

SOS1 (HGNC:11187): (SOS Ras/Rac guanine nucleotide exchange factor 1) This gene encodes a protein that is a guanine nucleotide exchange factor for RAS proteins, membrane proteins that bind guanine nucleotides and participate in signal transduction pathways. GTP binding activates and GTP hydrolysis inactivates RAS proteins. The product of this gene may regulate RAS proteins by facilitating the exchange of GTP for GDP. Mutations in this gene are associated with gingival fibromatosis 1 and Noonan syndrome type 4. [provided by RefSeq, Jul 2008]

SOS1 Gene-Disease associations (from GenCC):

Noonan syndrome
Inheritance: AD Classification: DEFINITIVE, SUPPORTIVE Submitted by: ClinGen, Orphanet
Noonan syndrome 4
Inheritance: AD Classification: DEFINITIVE, STRONG Submitted by: Genomics England PanelApp, G2P, PanelApp Australia, Labcorp Genetics (formerly Invitae)
fibromatosis, gingival, 1
Inheritance: AD Classification: STRONG Submitted by: Labcorp Genetics (formerly Invitae)
hereditary gingival fibromatosis
Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
cardiofaciocutaneous syndrome
Inheritance: AD Classification: NO_KNOWN Submitted by: ClinGen
Costello syndrome
Inheritance: AD Classification: NO_KNOWN Submitted by: ClinGen

SOS1 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Benign. The variant received -20 ACMG points.

BP4

Computational evidence support a benign effect (BayesDel_noAF=-0.58).

BP6

Variant 2-39058814-T-C is Benign according to our data. Variant chr2-39058814-T-C is described in ClinVar as Benign/Likely_benign. ClinVar VariationId is 477717.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

BS1

Variant frequency is greater than expected in population afr. GnomAd4 allele frequency = 0.000151 (23/151948) while in subpopulation AFR AF = 0.000435 (18/41410). AF 95% confidence interval is 0.00028. There are 0 homozygotes in GnomAd4. There are 11 alleles in the male GnomAd4 subpopulation. Median coverage is 32. This position passed quality control check.

BS2

High AC in GnomAd4 at 23 AD gene.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_005633.4. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Gene	Transcript	Tags	HGVSc	Effect	Exon Rank	Protein
SOS1	NM_005633.4	MANE Select	c.214-10A>G	intron	N/A	NP_005624.2
SOS1	NM_001382394.1		c.193-10A>G	intron	N/A	NP_001369323.1
SOS1	NM_001382395.1		c.214-10A>G	intron	N/A	NP_001369324.1

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	Effect	Exon Rank	Protein
SOS1	ENST00000402219.8	TSL:1 MANE Select	c.214-10A>G	intron	N/A	ENSP00000384675.2
SOS1	ENST00000395038.6	TSL:5	c.214-10A>G	intron	N/A	ENSP00000378479.2
SOS1	ENST00000692089.1		c.214-10A>G	intron	N/A	ENSP00000508626.1

Frequencies

GnomAD3 genomes

AF:

0.000151

AC:

AN:

151948

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000435

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.000193

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000295

Gnomad OTH

AF:

0.000958

GnomAD2 exomes

AF:

0.0000763

AC:

AN:

249112

AF XY:

0.000104

show subpopulations

Gnomad AFR exome

AF:

0.000447

Gnomad AMR exome

AF:

0.0000875

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.0000546

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000266

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000261

AC:

AN:

1457570

Hom.:

Cov.:

AF XY:

0.0000303

AC XY:

AN XY:

725268

show subpopulations

African (AFR)

AF:

0.000450

AC:

AN:

33362

American (AMR)

AF:

0.0000674

AC:

AN:

44540

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26060

East Asian (EAS)

AF:

0.0000253

AC:

AN:

39502

South Asian (SAS)

AF:

0.0000815

AC:

AN:

85934

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53358

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5760

European-Non Finnish (NFE)

AF:

0.00000902

AC:

AN:

1108824

Other (OTH)

AF:

0.0000332

AC:

AN:

60230

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.459

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

AF:

0.000151

AC:

AN:

151948

Hom.:

Cov.:

AF XY:

0.000148

AC XY:

AN XY:

74172

show subpopulations

African (AFR)

AF:

0.000435

AC:

AN:

41410

American (AMR)

AF:

0.00

AC:

AN:

15256

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3468

East Asian (EAS)

AF:

0.000193

AC:

AN:

5180

South Asian (SAS)

AF:

0.00

AC:

AN:

4816

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10592

Middle Eastern (MID)

AF:

0.00

AC:

AN:

316

European-Non Finnish (NFE)

AF:

0.0000295

AC:

AN:

67910

Other (OTH)

AF:

0.000958

AC:

AN:

2088

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.549

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome 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

Alfa

AF:

0.000130

Hom.:

Bravo

AF:

0.000196

Asia WGS

AF:

0.000289

AC:

AN:

3470

ClinVar

Significance: Benign/Likely benign

Submissions summary: Benign:5

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

not specified

Benign:1

Jul 10, 2022

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

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

Noonan syndrome 4

Benign:1

Genome-Nilou Lab

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

not provided

Benign:1

Oct 30, 2020

GeneDx

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

Fibromatosis, gingival, 1

Benign:1

Genome-Nilou Lab

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

RASopathy

Benign:1

Jan 26, 2025

Labcorp Genetics (formerly Invitae), Labcorp

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.58

CADD

Benign

6.0

(source)

DANN

Benign

0.77

PhyloP100

-1.2

Mutation Taster

=100/0

polymorphism

(source)

Splicing

Name

Calibrated prediction

Score

Prediction

dbscSNV1_ADA

Benign

0.00017

dbscSNV1_RF

Benign

0.10

SpliceAI score (max)

0.12

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

Variant Effect in Transcripts

RefSeq Transcripts

Ensembl Transcripts

Frequencies

Age Distribution

Age Distribution

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over