11-66689815-G-T

Position:

chr11-66689815-G-T

Variant summary

Our verdict is Uncertain significance. Variant got 1 ACMG points: 1P and 0B. PP2

The NM_006946.4(SPTBN2):c.5939C>A(p.Ala1980Glu) variant causes a missense change. The variant allele was found at a frequency of 0.0000149 in 1,613,470 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Uncertain significance (★★).

Frequency

Genomes: 𝑓 0.000020 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000014 ( 0 hom. )

Consequence

SPTBN2
NM_006946.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, multiple submitters, no conflicts U:2

Conservation

PhyloP100: 5.82

Variant links:

Genes affected

SPTBN2 (HGNC:11276): (spectrin beta, non-erythrocytic 2) Spectrins are principle components of a cell's membrane-cytoskeleton and are composed of two alpha and two beta spectrin subunits. The protein encoded by this gene (SPTBN2), is called spectrin beta non-erythrocytic 2 or beta-III spectrin. It is related to, but distinct from, the beta-II spectrin gene which is also known as spectrin beta non-erythrocytic 1 (SPTBN1). SPTBN2 regulates the glutamate signaling pathway by stabilizing the glutamate transporter EAAT4 at the surface of the plasma membrane. Mutations in this gene cause a form of spinocerebellar ataxia, SCA5, that is characterized by neurodegeneration, progressive locomotor incoordination, dysarthria, and uncoordinated eye movements. [provided by RefSeq, Dec 2009]

SPTBN2 links:

SPTBN2 (HGNC:):

SPTBN2 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 1 ACMG points.

PP2

Missense variant in gene, where missense usually causes diseases (based on misZ statistic), SPTBN2. . Gene score misZ 2.6349 (greater than the threshold 3.09). Trascript score misZ 4.499 (greater than threshold 3.09). GenCC has associacion of gene with autosomal recessive spinocerebellar ataxia 14, spinocerebellar ataxia type 5.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
SPTBN2	NM_006946.4 linkuse as main transcript	c.5939C>A	p.Ala1980Glu	missense_variant	29/38	ENST00000533211.6	NP_008877.2	O15020-1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
SPTBN2	ENST00000533211.6 linkuse as main transcript	c.5939C>A	p.Ala1980Glu	missense_variant	29/38	5	NM_006946.4	ENSP00000432568.1		O15020-1

Frequencies

GnomAD3 genomes

AF:

0.0000197

AC:

AN:

152094

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.000207

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000294

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000279

AC:

AN:

251252

Hom.:

AF XY:

0.0000442

AC XY:

AN XY:

135826

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.0000653

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000440

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000144

AC:

AN:

1461376

Hom.:

Cov.:

AF XY:

0.0000220

AC XY:

AN XY:

726980

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:

0.0000580

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.0000117

Gnomad4 OTH exome

AF:

0.0000166

GnomAD4 genome

AF:

0.0000197

AC:

AN:

152094

Hom.:

Cov.:

AF XY:

0.0000135

AC XY:

AN XY:

74282

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.000207

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000294

Gnomad4 OTH

AF:

0.00

ExAC

AF:

0.0000330

AC:

EpiCase

AF:

0.0000545

EpiControl

AF:

0.0000593

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:2

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

Autosomal recessive spinocerebellar ataxia 14

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Neuberg Centre For Genomic Medicine, NCGM

The missense variant c.5939C>A (p.Ala1980Glu) in SPTBN2 has been submitted to ClinVar as a Variant of Uncertain Significance. The p.Ala1980Glu is reported with the allele frequency (0.0032%) in the gnomad and novel in 1000 genome database. The amino acid Ala at position 1980 is changed to a Glu changing protein sequence and it might alter its composition and physico-chemical properties. The amino acid change p.Ala1980Glu in SPTBN2 is predicted as conserved by GERP++ and PhyloP across 100 vertebrates. For these reasons, this variant has been classified as Uncertain Significance (VUS). -

not provided

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Athena Diagnostics

Mar 12, 2018

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Uncertain

0.46

BayesDel_addAF

Uncertain

0.16

BayesDel_noAF

Uncertain

0.12

CADD

Uncertain

DANN

Uncertain

0.99

DEOGEN2

Benign

0.41

T;T;.

Eigen

Uncertain

0.55

Eigen_PC

Uncertain

0.53

FATHMM_MKL

Pathogenic

0.97

LIST_S2

Uncertain

0.88

.;D;D

M_CAP

Benign

0.018

MetaRNN

Uncertain

0.57

D;D;D

MetaSVM

Benign

-0.71

MutationAssessor

Uncertain

2.5

M;M;M

PrimateAI

Uncertain

0.62

PROVEAN

Uncertain

-3.3

D;D;D

REVEL

Uncertain

0.37

Sift

Benign

0.14

T;T;T

Sift4G

Benign

0.66

T;T;T

Polyphen

1.0

D;D;.

Vest4

0.53

MutPred

0.64

Gain of disorder (P = 0.0906);Gain of disorder (P = 0.0906);Gain of disorder (P = 0.0906);

MVP

0.75

MPC

1.2

ClinPred

0.97

GERP RS

5.1

Varity_R

0.49

gMVP

0.83

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