Genetic Variant SDC3:p.Ser367Leu (chr1-30874359-G-A) – ACMG Classification: Likely_benign (-6 pts)

Variant summary

Our verdict is Likely benign. Variant got -6 ACMG points: 2P and 8B. PM1BP4_StrongBS2

The NM_014654.4(SDC3):c.1100C>T(p.Ser367Leu) variant causes a missense change. The variant allele was found at a frequency of 0.0000508 in 1,613,774 control chromosomes in the GnomAD database, including 1 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.000059 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000050 ( 1 hom. )

Consequence

SDC3
NM_014654.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 4.77

Variant links:

Genes affected

SDC3 (HGNC:10660): (syndecan 3) The protein encoded by this gene belongs to the syndecan proteoglycan family. It may play a role in the organization of cell shape by affecting the actin cytoskeleton, possibly by transferring signals from the cell surface in a sugar-dependent mechanism. Allelic variants of this gene have been associated with obesity. [provided by RefSeq, Oct 2009]

SDC3 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -6 ACMG points.

PM1

In a glycosylation_site O-linked (Xyl...) (glycosaminoglycan) serine (size 0) in uniprot entity SDC3_HUMAN

BP4

Computational evidence support a benign effect (MetaRNN=0.03531176).

BS2

High AC in GnomAd4 at 9 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
SDC3	NM_014654.4 link	c.1100C>T	p.Ser367Leu	missense_variant	Exon 4 of 5	ENST00000339394.7	NP_055469.3	O75056
SDC3	XM_011542463.1 link	c.1067C>T	p.Ser356Leu	missense_variant	Exon 4 of 5		XP_011540765.1
SDC3	XM_011542464.3 link	c.1064C>T	p.Ser355Leu	missense_variant	Exon 4 of 5		XP_011540766.1
SDC3	XM_011542466.2 link	c.974C>T	p.Ser325Leu	missense_variant	Exon 4 of 5		XP_011540768.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
SDC3	ENST00000339394.7 link	c.1100C>T	p.Ser367Leu	missense_variant	Exon 4 of 5	1	NM_014654.4	ENSP00000344468.6		O75056
SDC3	ENST00000336798.11 link	c.926C>T	p.Ser309Leu	missense_variant	Exon 2 of 3	1		ENSP00000338346.7		A0A9K3Y886

Frequencies

GnomAD3 genomes

AF:

0.0000460

AC:

AN:

152162

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000966

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.000193

Gnomad SAS

AF:

0.000414

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.00

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000959

AC:

AN:

250322

Hom.:

AF XY:

0.000155

AC XY:

AN XY:

135432

show subpopulations

Gnomad AFR exome

AF:

0.0000619

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.000163

Gnomad SAS exome

AF:

0.000621

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00000885

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000499

AC:

AN:

1461494

Hom.:

Cov.:

AF XY:

0.0000715

AC XY:

AN XY:

727060

show subpopulations

Gnomad4 AFR exome

AF:

0.0000597

Gnomad4 AMR exome

AF:

0.0000447

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.0000756

Gnomad4 SAS exome

AF:

0.000603

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.0000117

Gnomad4 OTH exome

AF:

0.0000166

GnomAD4 genome

AF:

0.0000591

AC:

AN:

152280

Hom.:

Cov.:

AF XY:

0.000107

AC XY:

AN XY:

74460

show subpopulations

Gnomad4 AFR

AF:

0.0000963

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.000193

Gnomad4 SAS

AF:

0.000829

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.00

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.0000329

Hom.:

Bravo

AF:

0.0000340

ESP6500AA

AF:

0.000227

AC:

ESP6500EA

AF:

0.00

AC:

ExAC

AF:

0.000132

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Jun 28, 2023

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.1100C>T (p.S367L) alteration is located in exon 4 (coding exon 4) of the SDC3 gene. This alteration results from a C to T substitution at nucleotide position 1100, causing the serine (S) at amino acid position 367 to be replaced by a leucine (L). 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

-0.51

BayesDel_noAF

Benign

-0.62

CADD

Pathogenic

DANN

Uncertain

1.0

DEOGEN2

Benign

0.36

.;T

Eigen

Benign

-0.12

Eigen_PC

Benign

0.071

FATHMM_MKL

Uncertain

0.92

LIST_S2

Uncertain

0.87

D;T

M_CAP

Benign

0.0041

MetaRNN

Benign

0.035

T;T

MetaSVM

Benign

-1.1

MutationAssessor

Benign

0.77

.;N

PrimateAI

Uncertain

0.70

PROVEAN

Benign

-2.3

N;N

REVEL

Benign

0.051

Sift

Benign

0.095

T;T

Sift4G

Benign

0.24

T;T

Polyphen

0.040

B;B

Vest4

0.10

MVP

0.043

MPC

0.061

ClinPred

0.057

GERP RS

3.9

Varity_R

0.12

gMVP

0.31

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