Variant 8-120541974-G-A details in Genebe, Genetics Data Aggregator

Variant summary

Our verdict is Uncertain significance. Variant got 2 ACMG points: 2P and 0B. PM2

The NM_021021.4(SNTB1):c.1360C>T(p.Arg454Cys) variant causes a missense change. The variant allele was found at a frequency of 0.000138 in 1,613,428 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.00024 ( 0 hom., cov: 32)

Exomes 𝑓: 0.00013 ( 0 hom. )

Consequence

SNTB1
NM_021021.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 4.29

Variant links:

Genes affected

SNTB1 (HGNC:11168): (syntrophin beta 1) Dystrophin is a large, rod-like cytoskeletal protein found at the inner surface of muscle fibers. Dystrophin is missing in Duchenne Muscular Dystrophy patients and is present in reduced amounts in Becker Muscular Dystrophy patients. The protein encoded by this gene is a peripheral membrane protein found associated with dystrophin and dystrophin-related proteins. This gene is a member of the syntrophin gene family, which contains at least two other structurally-related genes. [provided by RefSeq, Jul 2008]

SNTB1 links:

MTBP (HGNC:7417): (MDM2 binding protein) This gene encodes a protein that interacts with the oncoprotein mouse double minute 2. The encoded protein regulates progression through the cell cycle and may be involved in tumor formation. [provided by RefSeq, Aug 2012]

MTBP links:

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ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE
SNTB1	NM_021021.4 linkuse as main transcript	c.1360C>T	p.Arg454Cys	missense_variant	6/7	ENST00000517992.2
SNTB1	XM_047422126.1 linkuse as main transcript	c.781C>T	p.Arg261Cys	missense_variant	6/7
SNTB1	XM_047422127.1 linkuse as main transcript	c.781C>T	p.Arg261Cys	missense_variant	6/7

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
SNTB1	ENST00000517992.2 linkuse as main transcript	c.1360C>T	p.Arg454Cys	missense_variant	6/7	1	NM_021021.4	P1	Q13884-1

Frequencies

GnomAD3 genomes

AF:

0.000243

AC:

AN:

152038

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000628

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000327

Gnomad ASJ

AF:

0.000576

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.000207

Gnomad FIN

AF:

0.0000945

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000294

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.000187

AC:

AN:

250976

Hom.:

AF XY:

0.000177

AC XY:

AN XY:

135622

show subpopulations

Gnomad AFR exome

AF:

0.000493

Gnomad AMR exome

AF:

0.0000290

Gnomad ASJ exome

AF:

0.000894

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.000360

Gnomad FIN exome

AF:

0.000139

Gnomad NFE exome

AF:

0.000132

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.000127

AC:

185

AN:

1461390

Hom.:

Cov.:

AF XY:

0.000127

AC XY:

AN XY:

726962

show subpopulations

Gnomad4 AFR exome

AF:

0.00120

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.000919

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.000290

Gnomad4 FIN exome

AF:

0.000337

Gnomad4 NFE exome

AF:

0.0000603

Gnomad4 OTH exome

AF:

0.000182

GnomAD4 genome

AF:

0.000243

AC:

AN:

152038

Hom.:

Cov.:

AF XY:

0.000242

AC XY:

AN XY:

74254

show subpopulations

Gnomad4 AFR

AF:

0.000628

Gnomad4 AMR

AF:

0.000327

Gnomad4 ASJ

AF:

0.000576

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.000207

Gnomad4 FIN

AF:

0.0000945

Gnomad4 NFE

AF:

0.0000294

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.000263

Hom.:

Bravo

AF:

0.000264

ESP6500AA

AF:

0.000227

AC:

ESP6500EA

AF:

0.000349

AC:

ExAC

AF:

0.000214

AC:

Asia WGS

AF:

0.000289

AC:

AN:

3478

EpiCase

AF:

0.000109

EpiControl

AF:

0.000119

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

Dec 02, 2022

The c.1360C>T (p.R454C) alteration is located in exon 6 (coding exon 6) of the SNTB1 gene. This alteration results from a C to T substitution at nucleotide position 1360, causing the arginine (R) at amino acid position 454 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

0.087

BayesDel_addAF

Uncertain

0.15

BayesDel_noAF

Pathogenic

0.33

CADD

Pathogenic

DANN

Uncertain

1.0

DEOGEN2

Uncertain

0.49

T;T

Eigen

Uncertain

0.35

Eigen_PC

Uncertain

0.30

FATHMM_MKL

Uncertain

0.96

M_CAP

Uncertain

0.23

MetaRNN

Uncertain

0.43

T;T

MetaSVM

Uncertain

0.44

MutationAssessor

Uncertain

2.5

M;M

MutationTaster

Benign

1.0

D;D

PrimateAI

Benign

0.45

PROVEAN

Uncertain

-4.3

D;D

REVEL

Pathogenic

0.75

Sift

Uncertain

0.0020

D;D

Sift4G

Uncertain

0.0050

D;D

Polyphen

1.0

D;D

Vest4

0.51

MVP

0.79

ClinPred

0.33

GERP RS

3.6

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.7

Varity_R

0.50

gMVP

0.70

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