2-20203875-C-T

Position:

chr2-20203875-C-T

Variant summary

Our verdict is Benign. Variant got -8 ACMG points: 0P and 8B. BP4_StrongBS2

The NM_002997.5(SDC1):c.565G>A(p.Glu189Lys) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000484 in 1,611,608 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 14/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.000085 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000045 ( 0 hom. )

Consequence

SDC1
NM_002997.5 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 0.0240

Variant links:

Genes affected

SDC1 (HGNC:10658): (syndecan 1) The protein encoded by this gene is a transmembrane (type I) heparan sulfate proteoglycan and is a member of the syndecan proteoglycan family. The syndecans mediate cell binding, cell signaling, and cytoskeletal organization and syndecan receptors are required for internalization of the HIV-1 tat protein. The syndecan-1 protein functions as an integral membrane protein and participates in cell proliferation, cell migration and cell-matrix interactions via its receptor for extracellular matrix proteins. Altered syndecan-1 expression has been detected in several different tumor types. While several transcript variants may exist for this gene, the full-length natures of only two have been described to date. These two represent the major variants of this gene and encode the same protein. [provided by RefSeq, Jul 2008]

SDC1 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -8 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.0586437).

BS2

High AC in GnomAd4 at 13 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
SDC1	NM_002997.5 linkuse as main transcript	c.565G>A	p.Glu189Lys	missense_variant	3/5	ENST00000254351.9	NP_002988.4

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris
SDC1	ENST00000254351.9 linkuse as main transcript	c.565G>A	p.Glu189Lys	missense_variant	3/5	1	NM_002997.5	ENSP00000254351	P1
SDC1	ENST00000403076.5 linkuse as main transcript	c.478+87G>A		intron_variant		1		ENSP00000384613
SDC1	ENST00000381150.5 linkuse as main transcript	c.565G>A	p.Glu189Lys	missense_variant	4/6	5		ENSP00000370542	P1
SDC1	ENST00000429035.1 linkuse as main transcript	c.589G>A	p.Glu197Lys	missense_variant	3/3	3		ENSP00000400773

Frequencies

GnomAD3 genomes

AF:

0.0000986

AC:

AN:

152162

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000483

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:

0.0127

Gnomad NFE

AF:

0.000118

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000684

AC:

AN:

248604

Hom.:

AF XY:

0.0000743

AC XY:

AN XY:

134526

show subpopulations

Gnomad AFR exome

AF:

0.000124

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:

0.000124

Gnomad OTH exome

AF:

0.000166

GnomAD4 exome

AF:

0.0000445

AC:

AN:

1459328

Hom.:

Cov.:

AF XY:

0.0000675

AC XY:

AN XY:

726090

show subpopulations

Gnomad4 AFR exome

AF:

0.0000602

Gnomad4 AMR exome

AF:

0.0000228

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.0000504

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.0000188

Gnomad4 NFE exome

AF:

0.0000531

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

AF:

0.0000854

AC:

AN:

152280

Hom.:

Cov.:

AF XY:

0.0000806

AC XY:

AN XY:

74454

show subpopulations

Gnomad4 AFR

AF:

0.0000481

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.000193

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.000118

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.000258

Hom.:

Bravo

AF:

0.0000718

ESP6500AA

AF:

0.00

AC:

ESP6500EA

AF:

0.000116

AC:

ExAC

AF:

0.0000494

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

May 24, 2023

The c.565G>A (p.E189K) alteration is located in exon 4 (coding exon 3) of the SDC1 gene. This alteration results from a G to A substitution at nucleotide position 565, causing the glutamic acid (E) at amino acid position 189 to be replaced by a lysine (K). 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

0.074

BayesDel_addAF

Benign

-0.45

BayesDel_noAF

Benign

-0.57

CADD

Benign

9.0

DANN

Uncertain

0.98

DEOGEN2

Benign

0.39

T;T;.

Eigen

Benign

-0.97

Eigen_PC

Benign

-1.0

FATHMM_MKL

Benign

0.047

LIST_S2

Benign

0.70

.;T;T

M_CAP

Benign

0.0079

MetaRNN

Benign

0.059

T;T;T

MetaSVM

Benign

-0.99

MutationAssessor

Benign

0.47

N;N;.

MutationTaster

Benign

1.0

N;N;N

PrimateAI

Benign

0.38

PROVEAN

Benign

-0.90

N;N;N

REVEL

Benign

0.025

Sift

Benign

0.34

T;T;T

Sift4G

Benign

0.23

T;T;.

Polyphen

0.011

B;B;.

Vest4

0.075

MVP

0.30

MPC

0.29

ClinPred

0.010

GERP RS

-0.25

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.1

Varity_R

0.026

gMVP

0.20

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