Genetic Variant SSX7:p.Ala163Thr (chrX-52645523-C-T) – ACMG Classification: Likely_benign (-6 pts)

Variant summary

Our verdict is Likely benign. Variant got -6 ACMG points: 0P and 6B. BP4_ModerateBS2

The NM_173358.2(SSX7):c.487G>A(p.Ala163Thr) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000434 in 1,198,558 control chromosomes in the GnomAD database, with no homozygous occurrence. There are 16 hemizygotes in GnomAD. In-silico tool predicts a benign outcome for this variant. 12/19 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.000047 ( 0 hom., 1 hem., cov: 20)

Exomes 𝑓: 0.000043 ( 0 hom. 15 hem. )

Consequence

SSX7
NM_173358.2 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: -0.127

Variant links:

Genes affected

SSX7 (HGNC:19653): (SSX family member 7) 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 spontaneously humoral and cellular immune responses in cancer patients, and are potentially useful targets in cancer vaccine-based immunotherapy. SSX1, SSX2 and SSX4 genes have been involved in the t(X;18) translocation characteristically found in all synovial sarcomas. This gene appears not to be involved in this type of chromosome translocation. [provided by RefSeq, Jul 2008]

SSX7 links:

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ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -6 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.11124852).

BS2

High Hemizygotes in GnomAdExome4 at 15 gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
SSX7	NM_173358.2 link	c.487G>A	p.Ala163Thr	missense_variant	Exon 7 of 8	ENST00000298181.6	NP_775494.1	Q7RTT5A0A024R019

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
SSX7	ENST00000298181.6 link	c.487G>A	p.Ala163Thr	missense_variant	Exon 7 of 8	5	NM_173358.2	ENSP00000298181.5		Q7RTT5

Frequencies

GnomAD3 genomes

AF:

0.0000467

AC:

AN:

107035

Hom.:

Cov.:

AF XY:

0.0000339

AC XY:

AN XY:

29467

show subpopulations

Gnomad AFR

AF:

0.0000682

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000577

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000172

AC:

AN:

174063

Hom.:

AF XY:

0.0000164

AC XY:

AN XY:

60855

show subpopulations

Gnomad AFR exome

AF:

0.0000828

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000257

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000431

AC:

AN:

1091523

Hom.:

Cov.:

AF XY:

0.0000418

AC XY:

AN XY:

358589

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.0000537

Gnomad4 OTH exome

AF:

0.0000437

GnomAD4 genome

AF:

0.0000467

AC:

AN:

107035

Hom.:

Cov.:

AF XY:

0.0000339

AC XY:

AN XY:

29467

show subpopulations

Gnomad4 AFR

AF:

0.0000682

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000577

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.000214

Hom.:

Bravo

AF:

0.0000227

ExAC

AF:

0.00000826

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Jul 12, 2023

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.487G>A (p.A163T) alteration is located in exon 7 (coding exon 6) of the SSX7 gene. This alteration results from a G to A substitution at nucleotide position 487, causing the alanine (A) at amino acid position 163 to be replaced by a threonine (T). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.11

BayesDel_addAF

Benign

-0.55

BayesDel_noAF

Benign

-1.0

CADD

Benign

3.8

DANN

Uncertain

0.99

DEOGEN2

Benign

0.0094

FATHMM_MKL

Benign

0.0032

LIST_S2

Benign

0.72

M_CAP

Benign

0.0017

MetaRNN

Benign

0.11

MetaSVM

Benign

-0.98

MutationAssessor

Benign

0.55

PROVEAN

Benign

-1.4

REVEL

Benign

0.089

Sift

Benign

0.37

Sift4G

Benign

0.23

Polyphen

0.85

Vest4

0.17

MutPred

0.46

Gain of phosphorylation at A163 (P = 0.0249);

MVP

0.16

MPC

0.033

ClinPred

0.064

GERP RS

0.54

Varity_R

0.14

gMVP

0.013

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