rs142775522

Positions:

chr1-158615332-T-G

Variant summary

Our verdict is Benign. Variant got -20 ACMG points: 0P and 20B. BP4_StrongBP6_Very_StrongBS1BS2

The NM_003126.4(SPTA1):c.6672A>C(p.Glu2224Asp) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000898 in 1,614,124 control chromosomes in the GnomAD database, including 10 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★★).

Frequency

Genomes: 𝑓 0.0046 ( 4 hom., cov: 32)

Exomes 𝑓: 0.00051 ( 6 hom. )

Consequence

SPTA1
NM_003126.4 missense

Scores

Clinical Significance

Benign/Likely benign criteria provided, multiple submitters, no conflicts P:1B:5

Conservation

PhyloP100: 0.202

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:

SPTA1 (HGNC:):

SPTA1 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -20 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.0067679286).

BP6

Variant 1-158615332-T-G is Benign according to our data. Variant chr1-158615332-T-G is described in ClinVar as [Likely_benign]. Clinvar id is 258956.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

BS1

Variant frequency is greater than expected in population afr. gnomad4 allele frequency = 0.00461 (703/152330) while in subpopulation AFR AF= 0.0163 (676/41580). AF 95% confidence interval is 0.0152. There are 4 homozygotes in gnomad4. There are 334 alleles in male gnomad4 subpopulation. Median coverage is 32. This position pass quality control queck.

BS2

High Homozygotes in GnomAd4 at 4 AD,AR gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
SPTA1	NM_003126.4 linkuse as main transcript	c.6672A>C	p.Glu2224Asp	missense_variant	48/52	ENST00000643759.2	NP_003117.2	P02549-1
SPTA1	XM_011509916.3 linkuse as main transcript	c.6672A>C	p.Glu2224Asp	missense_variant	49/53		XP_011508218.1	P02549-1
SPTA1	XM_011509917.4 linkuse as main transcript	c.6654A>C	p.Glu2218Asp	missense_variant	47/51		XP_011508219.1
SPTA1	XM_047428883.1 linkuse as main transcript	c.6351A>C	p.Glu2117Asp	missense_variant	48/52		XP_047284839.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	UniProt
SPTA1	ENST00000643759.2 linkuse as main transcript	c.6672A>C	p.Glu2224Asp	missense_variant	48/52		NM_003126.4	ENSP00000495214.1	P02549-1
SPTA1	ENST00000492934.1 linkuse as main transcript	n.187A>C		non_coding_transcript_exon_variant	3/3	2
SPTA1	ENST00000498708.1 linkuse as main transcript	n.104A>C		non_coding_transcript_exon_variant	2/5	3

Frequencies

GnomAD3 genomes

AF:

0.00458

AC:

697

AN:

152212

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0162

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00124

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:

0.00239

GnomAD3 exomes

AF:

0.00111

AC:

278

AN:

249558

Hom.:

AF XY:

0.000835

AC XY:

113

AN XY:

135396

show subpopulations

Gnomad AFR exome

AF:

0.0153

Gnomad AMR exome

AF:

0.000985

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.0000654

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000177

Gnomad OTH exome

AF:

0.000495

GnomAD4 exome

AF:

0.000510

AC:

746

AN:

1461794

Hom.:

Cov.:

AF XY:

0.000446

AC XY:

324

AN XY:

727196

show subpopulations

Gnomad4 AFR exome

AF:

0.0178

Gnomad4 AMR exome

AF:

0.000939

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.000104

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.0000243

Gnomad4 OTH exome

AF:

0.00103

GnomAD4 genome

AF:

0.00461

AC:

703

AN:

152330

Hom.:

Cov.:

AF XY:

0.00448

AC XY:

334

AN XY:

74494

show subpopulations

Gnomad4 AFR

AF:

0.0163

Gnomad4 AMR

AF:

0.00124

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:

0.00236

Alfa

AF:

0.000689

Hom.:

Bravo

AF:

0.00480

ESP6500AA

AF:

0.0137

AC:

ESP6500EA

AF:

0.00

AC:

ExAC

AF:

0.00132

AC:

160

Asia WGS

AF:

0.000289

AC:

AN:

3478

EpiCase

AF:

0.0000545

EpiControl

AF:

0.00

ClinVar

Significance: Benign/Likely benign

Submissions summary: Pathogenic:1Benign:5

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

not provided

Benign:3

Likely benign, criteria provided, single submitter	clinical testing	ARUP Laboratories, Molecular Genetics and Genomics, ARUP Laboratories	Mar 31, 2022	- -
Benign, criteria provided, single submitter	clinical testing	Labcorp Genetics (formerly Invitae), Labcorp	Jan 29, 2024	- -
Benign, criteria provided, single submitter	clinical testing	CeGaT Center for Human Genetics Tuebingen	Apr 01, 2022	SPTA1: BP4, BS1, BS2 -

Familial hemolytic anemia

Pathogenic:1

Likely pathogenic, flagged submission

clinical testing

Department of Genetic, Henri Mondor Hospital, Assistance Publique des Hôpitaux de Paris

Feb 27, 2018

- -

not specified

Benign:1

Benign, criteria provided, single submitter

clinical testing

PreventionGenetics, part of Exact Sciences

- -

Elliptocytosis 2

Benign:1

Likely benign, criteria provided, single submitter

clinical testing

Illumina Laboratory Services, Illumina

Jan 13, 2018

This variant was observed in the ICSL laboratory as part of a predisposition screen in an ostensibly healthy population. It had not been previously curated by ICSL or reported in the Human Gene Mutation Database (HGMD: prior to June 1st, 2018), and was therefore a candidate for classification through an automated scoring system. Utilizing variant allele frequency, disease prevalence and penetrance estimates, and inheritance mode, an automated score was calculated to assess if this variant is too frequent to cause the disease. Based on the score and internal cut-off values, a variant classified as likely benign is not then subjected to further curation. The score for this variant resulted in a classification of likely benign for this disease. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Uncertain

0.39

BayesDel_addAF

Benign

-0.37

BayesDel_noAF

Benign

-0.29

CADD

Benign

DANN

Uncertain

1.0

DEOGEN2

Benign

0.40

T;T

Eigen

Benign

-0.020

Eigen_PC

Benign

-0.17

FATHMM_MKL

Uncertain

0.85

LIST_S2

Pathogenic

0.99

.;D

MetaRNN

Benign

0.0068

T;T

MetaSVM

Benign

-0.78

MutationAssessor

Uncertain

2.8

M;M

PrimateAI

Benign

0.43

REVEL

Benign

0.22

Sift4G

Pathogenic

0.0

D;.

Polyphen

1.0

D;D

Vest4

0.74

MutPred

0.37

Gain of helix (P = 0.1736);Gain of helix (P = 0.1736);

MVP

0.65

MPC

0.22

ClinPred

0.030

GERP RS

-0.25

Varity_R

0.43

gMVP

0.37

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