Genetic Variant SSX3:p.Asn121Asp (chrX-48350092-T-C) – ACMG Classification: Benign (-8 pts)

Variant summary

Our verdict is Benign. The variant received -8 ACMG points: 0P and 8B. BP4_StrongBS2

The NM_021014.4(SSX3):c.361A>G(p.Asn121Asp) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000331 in 1,210,252 control chromosomes in the GnomAD database, with no homozygous occurrence. There are 12 hemizygotes in GnomAD. 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 Uncertain significance (★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. N121H) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.000054 ( 0 hom., 2 hem., cov: 22)

Exomes 𝑓: 0.000031 ( 0 hom. 10 hem. )

Consequence

SSX3
NM_021014.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 0.0270

Publications

0 publications found

Variant links:

Genes affected

SSX3 (HGNC:11337): (SSX family member 3) The product of this gene belongs to the family of highly homologous synovial sarcoma X (SSX) breakpoint proteins. These proteins may function as transcriptional repressors. They are also capable of eliciting spontaneous humoral and cellular immune responses in cancer patients, and are potentially useful targets in cancer vaccine-based immunotherapy. While some of the related SSX genes are involved in t(X;18)(p11.2;q11.2) translocations that are characteristically found in all synovial sarcomas, this gene does not appear to be involved in such translocations. [provided by RefSeq, Jul 2013]

SSX3 links:

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ACMG classification

Classification was made for transcript

Our verdict: Benign. The variant received -8 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.009974778).

BS2

High Hemizygotes in GnomAd4 at 2 gene

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_021014.4. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	SSX3	NM_021014.4	MANE Select	c.361A>G	p.Asn121Asp	missense	Exon 6 of 8	NP_066294.1	Q99909-1
	SSX3	NR_176964.1		n.451A>G		non_coding_transcript_exon	Exon 6 of 9

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
SSX3	ENST00000298396.7	TSL:1 MANE Select	c.361A>G	p.Asn121Asp	missense	Exon 6 of 8	ENSP00000298396.2	Q99909-1
SSX3	ENST00000612497.1	TSL:5	c.361A>G	p.Asn121Asp	missense	Exon 5 of 5	ENSP00000480427.1	A0A087WWQ6
SSX3	ENST00000376893.7	TSL:2	c.361A>G	p.Asn121Asp	missense	Exon 6 of 8	ENSP00000366090.3	Q99909-2

Frequencies

GnomAD3 genomes

AF:

0.0000536

AC:

AN:

111999

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00168

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.00

Gnomad OTH

AF:

0.00

GnomAD2 exomes

AF:

0.000169

AC:

AN:

183451

AF XY:

0.000162

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00216

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.000221

GnomAD4 exome

AF:

0.0000310

AC:

AN:

1098199

Hom.:

Cov.:

AF XY:

0.0000275

AC XY:

AN XY:

363559

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

26402

American (AMR)

AF:

0.00

AC:

AN:

35202

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

19385

East Asian (EAS)

AF:

0.00106

AC:

AN:

30206

South Asian (SAS)

AF:

0.00

AC:

AN:

54139

European-Finnish (FIN)

AF:

0.00

AC:

AN:

40531

Middle Eastern (MID)

AF:

0.00

AC:

AN:

4137

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

842102

Other (OTH)

AF:

0.0000434

AC:

AN:

46095

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.479

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Exome Hom

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:

0.0000535

AC:

AN:

112053

Hom.:

Cov.:

AF XY:

0.0000585

AC XY:

AN XY:

34215

show subpopulations

⚠️ The allele balance in gnomAD version 4 Genomes is significantly skewed from the expected value of 0.5.

African (AFR)

AF:

0.00

AC:

AN:

30931

American (AMR)

AF:

0.00

AC:

AN:

10514

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

2638

East Asian (EAS)

AF:

0.00168

AC:

AN:

3571

South Asian (SAS)

AF:

0.00

AC:

AN:

2643

European-Finnish (FIN)

AF:

0.00

AC:

AN:

6114

Middle Eastern (MID)

AF:

0.00

AC:

AN:

218

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

53205

Other (OTH)

AF:

0.00

AC:

AN:

1534

⚠️ The allele balance in gnomAD version 4 Genomes is significantly skewed from the expected value of 0.5. (p-value = 0.000782701), which strongly suggests a high chance of mosaicism in these individuals.

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.375

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:

0.00

Hom.:

Bravo

AF:

0.0000756

ExAC

AF:

0.000124

AC:

ClinVar

ClinVar submissions

Significance:Uncertain significance

Revision:criteria provided, single submitter

View on ClinVar

Pathogenic

VUS

Benign

Condition

not specified (1)

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.10

BayesDel_addAF

Benign

-0.83

BayesDel_noAF

Benign

-0.97

CADD

Benign

1.4

(source)

DANN

Benign

0.96

DEOGEN2

Benign

0.050

FATHMM_MKL

Benign

0.0060

LIST_S2

Uncertain

0.89

M_CAP

Benign

0.0030

MetaRNN

Benign

0.010

MetaSVM

Benign

-0.99

MutationAssessor

Pathogenic

3.0

PhyloP100

0.027

PrimateAI

Benign

0.35

PROVEAN

Uncertain

-2.9

REVEL

Benign

0.025

Sift

Uncertain

0.022

Sift4G

Benign

0.13

Polyphen

0.63

Vest4

0.072

MutPred

0.20

Gain of loop (P = 0.0166)

MVP

0.11

MPC

0.062

ClinPred

0.20

GERP RS

-1.3

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.1

Varity_R

0.16

gMVP

0.031

Mutation Taster

=99/1

polymorphism

(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

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

Variant Effect in Transcripts

RefSeq Transcripts

Ensembl Transcripts

Frequencies

Age Distribution

Age Distribution

ClinVar

Computational scores

Splicing

Publications

Other links and lift over