rs41273519

Positions:

Variant summary

Our verdict is Likely benign. Variant got -5 ACMG points: 0P and 5B. BP4_StrongBS2_Supporting

The NM_003126.4(SPTA1):c.6421C>T(p.Arg2141Trp) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0027 in 1,613,944 control chromosomes in the GnomAD database, including 8 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. R2141Q) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.0026 ( 1 hom., cov: 32)

Exomes 𝑓: 0.0027 ( 7 hom. )

Consequence

SPTA1
NM_003126.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, multiple submitters, no conflicts P:1U:8

Conservation

PhyloP100: 3.04

Variant links:

Genes affected

SPTA1 (HGNC:11272): (spectrin alpha, erythrocytic 1) This gene encodes a member of a family of molecular scaffold proteins that link the plasma membrane to the actin cytoskeleton and functions in the determination of cell shape, arrangement of transmembrane proteins, and organization of organelles. The encoded protein is primarily composed of 22 spectrin repeats which are involved in dimer formation. It forms a component of the erythrocyte plasma membrane. Mutations in this gene result in a variety of hereditary red blood cell disorders, including elliptocytosis-2, pyropoikilocytosis, and spherocytosis, type 3. [provided by RefSeq, Aug 2017]

SPTA1 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -5 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.04913938).

BS2

High Homozygotes in GnomAdExome4 at 7 AD,AR geneVariant has number of homozygotes lower than other variant known as pathogenic in the gene, so the strength is limited to Supporting.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE
SPTA1	NM_003126.4 linkuse as main transcript	c.6421C>T	p.Arg2141Trp	missense_variant	45/52	ENST00000643759.2
SPTA1	XM_011509916.3 linkuse as main transcript	c.6421C>T	p.Arg2141Trp	missense_variant	46/53
SPTA1	XM_011509917.4 linkuse as main transcript	c.6421C>T	p.Arg2141Trp	missense_variant	45/51
SPTA1	XM_047428883.1 linkuse as main transcript	c.6100C>T	p.Arg2034Trp	missense_variant	45/52

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
SPTA1	ENST00000643759.2 linkuse as main transcript	c.6421C>T	p.Arg2141Trp	missense_variant	45/52		NM_003126.4	P1	P02549-1
SPTA1	ENST00000484520.1 linkuse as main transcript	n.624C>T		non_coding_transcript_exon_variant	2/2	3

Frequencies

GnomAD3 genomes

AF:

0.00256

AC:

390

AN:

152082

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00384

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00288

Gnomad ASJ

AF:

0.00375

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.000472

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.00247

Gnomad OTH

AF:

0.000478

GnomAD3 exomes

AF:

0.00200

AC:

500

AN:

249544

Hom.:

AF XY:

0.00183

AC XY:

248

AN XY:

135384

show subpopulations

Gnomad AFR exome

AF:

0.00316

Gnomad AMR exome

AF:

0.00339

Gnomad ASJ exome

AF:

0.00248

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.0000327

Gnomad FIN exome

AF:

0.000788

Gnomad NFE exome

AF:

0.00240

Gnomad OTH exome

AF:

0.00313

GnomAD4 exome

AF:

0.00271

AC:

3964

AN:

1461744

Hom.:

Cov.:

AF XY:

0.00258

AC XY:

1879

AN XY:

727178

show subpopulations

Gnomad4 AFR exome

AF:

0.00346

Gnomad4 AMR exome

AF:

0.00313

Gnomad4 ASJ exome

AF:

0.00203

Gnomad4 EAS exome

AF:

0.0000504

Gnomad4 SAS exome

AF:

0.0000348

Gnomad4 FIN exome

AF:

0.000562

Gnomad4 NFE exome

AF:

0.00311

Gnomad4 OTH exome

AF:

0.00257

GnomAD4 genome

AF:

0.00256

AC:

390

AN:

152200

Hom.:

Cov.:

AF XY:

0.00253

AC XY:

188

AN XY:

74406

show subpopulations

Gnomad4 AFR

AF:

0.00383

Gnomad4 AMR

AF:

0.00288

Gnomad4 ASJ

AF:

0.00375

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.000472

Gnomad4 NFE

AF:

0.00247

Gnomad4 OTH

AF:

0.000473

Alfa

AF:

0.00254

Hom.:

Bravo

AF:

0.00277

TwinsUK

AF:

0.00189

AC:

ALSPAC

AF:

0.00208

AC:

ESP6500AA

AF:

0.00278

AC:

ESP6500EA

AF:

0.00264

AC:

ExAC

AF:

0.00188

AC:

227

Asia WGS

AF:

0.00173

AC:

AN:

3478

EpiCase

AF:

0.00207

EpiControl

AF:

0.00284

ClinVar

Significance: Uncertain significance

Submissions summary: Pathogenic:1Uncertain:8

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

Elliptocytosis 2

Uncertain:3

Uncertain significance, criteria provided, single submitter	clinical testing	Centogene AG - the Rare Disease Company	May 04, 2020	- -
Uncertain significance, criteria provided, single submitter	clinical testing	Mendelics	Jan 31, 2023	- -
Uncertain significance, criteria provided, single submitter	clinical testing	Illumina Laboratory Services, Illumina	Apr 27, 2017	This variant was observed as part of a predisposition screen in an ostensibly healthy population. A literature search was performed for the gene, cDNA change, and amino acid change (where applicable). Publications were found based on this search. However, the evidence from the literature, in combination with allele frequency data from public databases where available, was not sufficient to rule this variant in or out of causing disease. Therefore, this variant is classified as a variant of unknown significance. -

not provided

Uncertain:3

Uncertain significance, criteria provided, single submitter	clinical testing	Revvity Omics, Revvity	Jun 06, 2023	- -
Uncertain significance, criteria provided, single submitter	clinical testing	ARUP Laboratories, Molecular Genetics and Genomics, ARUP Laboratories	Nov 07, 2023	- -
Uncertain significance, criteria provided, single submitter	clinical testing	Mayo Clinic Laboratories, Mayo Clinic	Oct 06, 2022	- -

Hereditary spherocytosis type 3

Pathogenic:1Uncertain:1

Likely pathogenic, flagged submission	clinical testing	Department of Genetic, Henri Mondor Hospital, Assistance Publique des Hôpitaux de Paris	Feb 27, 2018	- -
Uncertain significance, criteria provided, single submitter	clinical testing	Illumina Laboratory Services, Illumina	Apr 27, 2017	This variant was observed as part of a predisposition screen in an ostensibly healthy population. A literature search was performed for the gene, cDNA change, and amino acid change (where applicable). No publications were found based on this search. Allele frequency data from public databases did not allow this variant to be ruled in or out of causing disease. Therefore, this variant is classified as a variant of unknown significance. -

Pyropoikilocytosis, hereditary

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Illumina Laboratory Services, Illumina

Apr 27, 2017

This variant was observed as part of a predisposition screen in an ostensibly healthy population. A literature search was performed for the gene, cDNA change, and amino acid change (where applicable). Publications were found based on this search. However, the evidence from the literature, in combination with allele frequency data from public databases where available, was not sufficient to rule this variant in or out of causing disease. Therefore, this variant is classified as a variant of unknown significance. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.22

BayesDel_addAF

Benign

-0.090

BayesDel_noAF

Uncertain

0.10

CADD

Uncertain

DANN

Pathogenic

1.0

DEOGEN2

Uncertain

0.69

D;D

Eigen

Uncertain

0.55

Eigen_PC

Uncertain

0.46

FATHMM_MKL

Uncertain

0.93

LIST_S2

Pathogenic

0.98

.;D

M_CAP

Pathogenic

0.47

MetaRNN

Benign

0.049

T;T

MetaSVM

Uncertain

0.34

MutationAssessor

Pathogenic

3.1

M;M

MutationTaster

Benign

1.0

D;D

PrimateAI

Uncertain

0.60

REVEL

Pathogenic

0.69

Sift4G

Pathogenic

0.0

D;.

Polyphen

1.0

D;D

Vest4

0.87

MVP

0.82

MPC

0.047

ClinPred

0.050

GERP RS

2.2

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.1

Varity_R

0.53

gMVP

0.65

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.17

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