NM_003126.4:c.867T>C

Variant names:

Variant summary

Our verdict is Benign. The variant received -21 ACMG points: 0P and 21B. BP4_StrongBP6_Very_StrongBP7BA1

The NM_003126.4(SPTA1):c.867T>C(p.Ser289Ser) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0062 in 1,613,692 control chromosomes in the GnomAD database, including 512 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Benign (★★).

Frequency

Genomes: 𝑓 0.032 ( 255 hom., cov: 31)

Exomes 𝑓: 0.0035 ( 257 hom. )

Consequence

SPTA1
NM_003126.4 synonymous

Scores

Clinical Significance

Benign criteria provided, multiple submitters, no conflicts B:7

Conservation

PhyloP100: -1.12

Publications

4 publications found

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 Gene-Disease associations (from GenCC):

hereditary spherocytosis type 3
Inheritance: AR Classification: DEFINITIVE, STRONG Submitted by: Laboratory for Molecular Medicine, Labcorp Genetics (formerly Invitae), Ambry Genetics
elliptocytosis 2
Inheritance: AD Classification: STRONG, MODERATE Submitted by: Labcorp Genetics (formerly Invitae), Ambry Genetics, Laboratory for Molecular Medicine
pyropoikilocytosis, hereditary
Inheritance: AR Classification: STRONG, MODERATE Submitted by: Labcorp Genetics (formerly Invitae), Ambry Genetics
hereditary elliptocytosis
Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
hereditary spherocytosis
Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet

SPTA1 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Benign. The variant received -21 ACMG points.

BP4

Computational evidence support a benign effect (BayesDel_noAF=-0.67).

BP6

Variant 1-158677780-A-G is Benign according to our data. Variant chr1-158677780-A-G is described in ClinVar as Benign. ClinVar VariationId is 258960.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

BP7

Synonymous conserved (PhyloP=-1.12 with no splicing effect.

BA1

GnomAd4 highest subpopulation (AFR) allele frequency at 95% confidence interval = 0.109 is higher than 0.05.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
SPTA1	NM_003126.4 link	c.867T>C	p.Ser289Ser	synonymous_variant	Exon 7 of 52	ENST00000643759.2	NP_003117.2	P02549-1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
SPTA1	ENST00000643759.2 link	c.867T>C	p.Ser289Ser	synonymous_variant	Exon 7 of 52		NM_003126.4	ENSP00000495214.1		P02549-1

Frequencies

GnomAD3 genomes

AF:

0.0320

AC:

4874

AN:

152078

Hom.:

254

Cov.:

show subpopulations

Gnomad AFR

AF:

0.112

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.0103

Gnomad ASJ

AF:

0.000288

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.000414

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.0158

Gnomad NFE

AF:

0.000500

Gnomad OTH

AF:

0.0244

GnomAD2 exomes

AF:

0.00847

AC:

2109

AN:

249064

AF XY:

0.00624

show subpopulations

Gnomad AFR exome

AF:

0.118

Gnomad AMR exome

AF:

0.00586

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.000239

Gnomad OTH exome

AF:

0.00580

GnomAD4 exome

AF:

0.00350

AC:

5120

AN:

1461496

Hom.:

257

Cov.:

AF XY:

0.00295

AC XY:

2143

AN XY:

727060

show subpopulations

African (AFR)

AF:

0.122

AC:

4096

AN:

33448

American (AMR)

AF:

0.00604

AC:

270

AN:

44692

Ashkenazi Jewish (ASJ)

AF:

0.0000383

AC:

AN:

26120

East Asian (EAS)

AF:

0.00

AC:

AN:

39690

South Asian (SAS)

AF:

0.000522

AC:

AN:

86252

European-Finnish (FIN)

AF:

0.0000187

AC:

AN:

53410

Middle Eastern (MID)

AF:

0.00677

AC:

AN:

5764

European-Non Finnish (NFE)

AF:

0.000184

AC:

205

AN:

1111752

Other (OTH)

AF:

0.00767

AC:

463

AN:

60368

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.483

Heterozygous variant carriers

274

547

821

1094

1368

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Exome Hom

Variant carriers

128

256

384

512

640

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

GnomAD4 genome

AF:

0.0321

AC:

4881

AN:

152196

Hom.:

255

Cov.:

AF XY:

0.0304

AC XY:

2259

AN XY:

74414

show subpopulations

African (AFR)

AF:

0.112

AC:

4631

AN:

41502

American (AMR)

AF:

0.0103

AC:

157

AN:

15288

Ashkenazi Jewish (ASJ)

AF:

0.000288

AC:

AN:

3470

East Asian (EAS)

AF:

0.00

AC:

AN:

5158

South Asian (SAS)

AF:

0.000415

AC:

AN:

4824

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10620

Middle Eastern (MID)

AF:

0.0170

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.000500

AC:

AN:

68012

Other (OTH)

AF:

0.0241

AC:

AN:

2116

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.500

Heterozygous variant carriers

213

426

639

852

1065

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome Het

Genome Hom

Variant carriers

132

176

220

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

Alfa

AF:

0.0125

Hom.:

155

Bravo

AF:

0.0369

Asia WGS

AF:

0.00722

AC:

AN:

3478

EpiCase

AF:

0.000818

EpiControl

AF:

0.000652

ClinVar

Significance: Benign

Submissions summary: Benign:7

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

not provided

Benign:3

Jan 24, 2025

Labcorp Genetics (formerly Invitae), Labcorp

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Breakthrough Genomics, Breakthrough Genomics

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:not provided

- -

Sep 06, 2024

ARUP Laboratories, Molecular Genetics and Genomics, ARUP Laboratories

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

not specified

Benign:1

PreventionGenetics, part of Exact Sciences

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Elliptocytosis 2

Benign:1

Jan 13, 2018

Illumina Laboratory Services, Illumina

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

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 benign is not then subjected to further curation. The score for this variant resulted in a classification of benign for this disease. -

Hereditary spherocytosis type 3

Benign:1

Jan 13, 2018

Illumina Laboratory Services, Illumina

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

Pyropoikilocytosis, hereditary

Benign:1

Jan 13, 2018

Illumina Laboratory Services, Illumina

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.67

CADD

Benign

4.1

(source)

DANN

Benign

0.41

PhyloP100

-1.1

Mutation Taster

=99/1

polymorphism (auto)

(source)

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

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

Age Distribution

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over