chr17-45991562-G-A

Variant names:

Variant summary

Our verdict is Benign. The variant received -20 ACMG points: 0P and 20B. BP4_StrongBP6_Very_StrongBS1BS2

The NM_001377265.1(MAPT):c.1708G>A(p.Ala570Thr) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00261 in 1,614,058 control chromosomes in the GnomAD database, including 100 homozygotes. In-silico tool predicts a benign outcome for this variant. 15/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Benign (★★).

Frequency

Genomes: 𝑓 0.014 ( 44 hom., cov: 32)

Exomes 𝑓: 0.0014 ( 56 hom. )

Consequence

MAPT
NM_001377265.1 missense

Scores

Clinical Significance

Benign criteria provided, multiple submitters, no conflicts B:8O:1

Conservation

PhyloP100: -0.997

Publications

19 publications found

Variant links:

Genes affected

MAPT (HGNC:6893): (microtubule associated protein tau) This gene encodes the microtubule-associated protein tau (MAPT) whose transcript undergoes complex, regulated alternative splicing, giving rise to several mRNA species. MAPT transcripts are differentially expressed in the nervous system, depending on stage of neuronal maturation and neuron type. MAPT gene mutations have been associated with several neurodegenerative disorders such as Alzheimer's disease, Pick's disease, frontotemporal dementia, cortico-basal degeneration and progressive supranuclear palsy. [provided by RefSeq, Jul 2008]

MAPT Gene-Disease associations (from GenCC):

Pick disease
Inheritance: AD Classification: STRONG Submitted by: Labcorp Genetics (formerly Invitae), Genomics England PanelApp
semantic dementia
Inheritance: AD Classification: STRONG Submitted by: Genomics England PanelApp
supranuclear palsy, progressive, 1
Inheritance: AD Classification: STRONG Submitted by: Genomics England PanelApp
late-onset Parkinson disease
Inheritance: Unknown, AD Classification: STRONG, LIMITED Submitted by: Labcorp Genetics (formerly Invitae), Genomics England PanelApp
progressive supranuclear palsy-parkinsonism syndrome
Inheritance: AR Classification: MODERATE, LIMITED Submitted by: Labcorp Genetics (formerly Invitae), Genomics England PanelApp

MAPT links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Benign. The variant received -20 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.0019565523).

BP6

Variant 17-45991562-G-A is Benign according to our data. Variant chr17-45991562-G-A is described in ClinVar as Benign. ClinVar VariationId is 98205.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 = 0.0141 (2152/152232) while in subpopulation AFR AF = 0.0491 (2040/41524). AF 95% confidence interval is 0.0474. There are 44 homozygotes in GnomAd4. There are 1000 alleles in the male GnomAd4 subpopulation. Median coverage is 32. This position passed quality control check.

BS2

High Homozygotes in GnomAd4 at 44 Unknown,AR,AD gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
MAPT	NM_001377265.1 link	c.1708G>A	p.Ala570Thr	missense_variant	Exon 8 of 13	ENST00000262410.10	NP_001364194.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
MAPT	ENST00000262410.10 link	c.1708G>A	p.Ala570Thr	missense_variant	Exon 8 of 13	1	NM_001377265.1	ENSP00000262410.6		A0A7I2PJZ2

Frequencies

GnomAD3 genomes

AF:

0.0142

AC:

2154

AN:

152114

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0493

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00550

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.000132

Gnomad OTH

AF:

0.00910

GnomAD2 exomes

AF:

0.00364

AC:

915

AN:

251212

AF XY:

0.00264

show subpopulations

Gnomad AFR exome

AF:

0.0499

Gnomad AMR exome

AF:

0.00263

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000617

Gnomad OTH exome

AF:

0.00114

GnomAD4 exome

AF:

0.00141

AC:

2061

AN:

1461826

Hom.:

Cov.:

AF XY:

0.00117

AC XY:

851

AN XY:

727212

show subpopulations

African (AFR)

AF:

0.0499

AC:

1671

AN:

33474

American (AMR)

AF:

0.00302

AC:

135

AN:

44720

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26136

East Asian (EAS)

AF:

0.00

AC:

AN:

39700

South Asian (SAS)

AF:

0.0000696

AC:

AN:

86256

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53404

Middle Eastern (MID)

AF:

0.00173

AC:

AN:

5764

European-Non Finnish (NFE)

AF:

0.0000405

AC:

AN:

1111984

Other (OTH)

AF:

0.00321

AC:

194

AN:

60388

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.466

Heterozygous variant carriers

118

236

355

473

591

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Exome Hom

Variant carriers

108

162

216

270

<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:

0.0141

AC:

2152

AN:

152232

Hom.:

Cov.:

AF XY:

0.0134

AC XY:

1000

AN XY:

74430

show subpopulations

African (AFR)

AF:

0.0491

AC:

2040

AN:

41524

American (AMR)

AF:

0.00549

AC:

AN:

15290

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3470

East Asian (EAS)

AF:

0.00

AC:

AN:

5178

South Asian (SAS)

AF:

0.00

AC:

AN:

4824

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10616

Middle Eastern (MID)

AF:

0.00

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.000132

AC:

AN:

68016

Other (OTH)

AF:

0.00900

AC:

AN:

2110

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.505

Heterozygous variant carriers

104

208

312

416

520

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome Het

Genome Hom

Variant carriers

110

<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:

0.00540

Hom.:

Bravo

AF:

0.0162

ESP6500AA

AF:

0.0454

AC:

200

ESP6500EA

AF:

0.00

AC:

ExAC

AF:

0.00421

AC:

511

Asia WGS

AF:

0.00144

AC:

AN:

3478

EpiCase

AF:

0.0000545

EpiControl

AF:

0.000119

ClinVar

Significance: Benign

Submissions summary: Benign:8Other:1

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

not specified

Benign:4

PreventionGenetics, part of Exact Sciences

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Clinical Genetics DNA and cytogenetics Diagnostics Lab, Erasmus MC, Erasmus Medical Center

Significance:Benign

Review Status:no assertion criteria provided

Collection Method:clinical testing

- -

Genome Diagnostics Laboratory, Amsterdam University Medical Center

Significance:Benign

Review Status:no assertion criteria provided

Collection Method:clinical testing

- -

Nov 21, 2023

Athena Diagnostics

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

not provided

Benign:2Other:1

VIB Department of Molecular Genetics, University of Antwerp

Significance:not provided

Review Status:no classification provided

Collection Method:literature only

- -

Mar 19, 2019

GeneDx

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

- -

MAPT-Related Spectrum Disorders

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. -

Frontotemporal dementia

Benign:1

Jan 17, 2025

Labcorp Genetics (formerly Invitae), Labcorp

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.076

BayesDel_addAF

Benign

-0.69

BayesDel_noAF

Benign

-0.72

CADD

Benign

0.28

(source)

DANN

Benign

0.85

DEOGEN2

Benign

0.28

T;.;.;.;.;.;.;.;.;T;.;.

Eigen

Benign

-1.4

Eigen_PC

Benign

-1.5

FATHMM_MKL

Benign

0.013

LIST_S2

Benign

0.83

T;T;T;T;T;T;T;.;.;.;.;.

MetaRNN

Benign

0.0020

T;T;T;T;T;T;T;T;T;T;T;T

MetaSVM

Benign

-0.99

MutationAssessor

Benign

0.41

N;.;N;.;.;.;.;.;N;N;.;.

PhyloP100

-1.0

PrimateAI

Benign

0.37

PROVEAN

Benign

-0.47

N;N;N;N;N;N;N;N;N;.;.;.

REVEL

Benign

0.0050

Sift

Benign

0.43

T;T;T;T;T;T;T;T;T;.;.;.

Sift4G

Benign

0.69

T;T;T;T;T;T;T;T;T;T;T;T

Polyphen

0.010

B;B;B;.;B;B;B;B;B;B;B;.

Vest4

0.029

MVP

0.30

MPC

0.15

ClinPred

0.0023

GERP RS

-8.8

Varity_R

0.026

gMVP

0.14

Mutation Taster

=99/1

polymorphism

(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