Genetic Variant SSPOP:n.469C>T (chr7-149777336-C-T) – ACMG Classification: Likely_benign (-2 pts)

Variant summary

Our verdict is Likely benign. Variant got -2 ACMG points: 2P and 4B. PM2BP4_Strong

The NR_163594.1(SSPOP):n.469C>T variant causes a non coding transcript exon change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000134 in 1,270,608 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 Uncertain significance (★).

Frequency

Genomes: 𝑓 0.000046 ( 0 hom., cov: 33)

Exomes 𝑓: 0.0000089 ( 0 hom. )

Consequence

SSPOP
NR_163594.1 non_coding_transcript_exon

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: -0.292

Variant links:

Genes affected

SSPOP (HGNC:21998): (SCO-spondin, pseudogene) Predicted to enable peptidase inhibitor activity. Predicted to be involved in several processes, including cell adhesion; negative regulation of catalytic activity; and regulation of peptidase activity. Predicted to be located in cytoplasm. Predicted to be active in extracellular matrix and extracellular space. [provided by Alliance of Genome Resources, Apr 2022]

SSPOP links:

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ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.03326103).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
SSPOP	NR_163594.1 link	n.469C>T		non_coding_transcript_exon_variant	Exon 4 of 103

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
SSPOP	ENST00000378016.5 link	n.469C>T		non_coding_transcript_exon_variant	Exon 4 of 103	5
SSPOP	ENST00000486824.3 link	n.94+808C>T		intron_variant	Intron 1 of 3	4

Frequencies

GnomAD3 genomes

AF:

0.0000460

AC:

AN:

152164

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000121

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:

0.0000294

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000233

AC:

AN:

128840

Hom.:

AF XY:

0.0000431

AC XY:

AN XY:

69622

show subpopulations

Gnomad AFR exome

AF:

0.000146

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.000101

Gnomad SAS exome

AF:

0.0000515

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.00000894

AC:

AN:

1118444

Hom.:

Cov.:

AF XY:

0.00000917

AC XY:

AN XY:

545088

show subpopulations

Gnomad4 AFR exome

AF:

0.0000878

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.0000810

Gnomad4 SAS exome

AF:

0.0000137

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00000663

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

AF:

0.0000460

AC:

AN:

152164

Hom.:

Cov.:

AF XY:

0.0000404

AC XY:

AN XY:

74338

show subpopulations

Gnomad4 AFR

AF:

0.000121

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:

0.0000294

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.0000223

Hom.:

Bravo

AF:

0.0000491

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Nov 10, 2024

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.469C>T (p.R157C) alteration is located in exon 4 (coding exon 4) of the SSPO gene. This alteration results from a C to T substitution at nucleotide position 469, causing the arginine (R) at amino acid position 157 to be replaced by a cysteine (C). 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

0.13

BayesDel_addAF

Benign

-0.089

BayesDel_noAF

Benign

-0.37

CADD

Benign

7.2

DANN

Benign

0.51

DEOGEN2

Benign

0.0095

FATHMM_MKL

Benign

0.097

LIST_S2

Benign

0.48

MetaRNN

Benign

0.033

MutationAssessor

Benign

0.0

PrimateAI

Benign

0.28

Sift4G

Uncertain

0.012

Polyphen

0.062

Vest4

0.12

MVP

0.13

GERP RS

-0.89

Varity_R

0.090

gMVP

0.50

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