17-45962350-C-T

Position:

chr17-45962350-C-T

Variant summary

Our verdict is Uncertain significance. Variant got 1 ACMG points: 2P and 1B. PM5BP6

The NM_001377265.1(MAPT):c.13C>T(p.Arg5Cys) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000548 in 1,459,852 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. R5H) has been classified as Likely benign.

Frequency

Genomes: not found (cov: 32)

Exomes 𝑓: 0.0000055 ( 0 hom. )

Consequence

MAPT
NM_001377265.1 missense

Scores

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:1B:1

Conservation

PhyloP100: 2.76

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 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 1 ACMG points.

PM5

Other missense variant is known to change same aminoacid residue: Variant chr17-45962351-G-T is described in ClinVar as [Pathogenic]. Clinvar id is 14263.Status of the report is no_assertion_criteria_provided, 0 stars.

BP6

Variant 17-45962350-C-T is Benign according to our data. Variant chr17-45962350-C-T is described in ClinVar as [Conflicting_classifications_of_pathogenicity]. Clinvar id is 889714.We mark this variant Likely_benign, oryginal submissions are: {Uncertain_significance=1, Benign=1}.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
MAPT	NM_001377265.1 linkuse as main transcript	c.13C>T	p.Arg5Cys	missense_variant	2/13	ENST00000262410.10

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
MAPT	ENST00000262410.10 linkuse as main transcript	c.13C>T	p.Arg5Cys	missense_variant	2/13	1	NM_001377265.1	A2

Frequencies

GnomAD3 genomes

Cov.:

GnomAD3 exomes

AF:

0.0000120

AC:

AN:

250984

Hom.:

AF XY:

0.00000737

AC XY:

AN XY:

135644

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.000163

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.00000548

AC:

AN:

1459852

Hom.:

Cov.:

AF XY:

0.00000413

AC XY:

AN XY:

726234

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.0000383

Gnomad4 EAS exome

AF:

0.0000504

Gnomad4 SAS exome

AF:

0.0000116

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00000360

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

Cov.:

Bravo

AF:

0.0000227

ExAC

AF:

0.0000165

AC:

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Uncertain:1Benign:1

Revision: criteria provided, conflicting classifications

LINK: link

Submissions by phenotype

Frontotemporal dementia

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

Jun 27, 2022

In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance. Algorithms developed to predict the effect of missense changes on protein structure and function are either unavailable or do not agree on the potential impact of this missense change (SIFT: "Deleterious"; PolyPhen-2: "Possibly Damaging"; Align-GVGD: "Class C0"). ClinVar contains an entry for this variant (Variation ID: 889714). This missense change has been observed in individual(s) with MAPT-related conditions (PMID: 25604855). This variant is present in population databases (rs766166210, gnomAD 0.02%). This sequence change replaces arginine, which is basic and polar, with cysteine, which is neutral and slightly polar, at codon 5 of the MAPT protein (p.Arg5Cys). -

MAPT-Related Spectrum Disorders

Benign:1

Benign, criteria provided, single submitter

clinical testing

Illumina Laboratory Services, Illumina

Jan 12, 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 benign is not then subjected to further curation. The score for this variant resulted in a classification of benign for this disease. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Uncertain

0.37

BayesDel_addAF

Benign

-0.11

BayesDel_noAF

Benign

-0.13

CADD

Uncertain

DANN

Pathogenic

1.0

DEOGEN2

Uncertain

0.46

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

Eigen

Uncertain

0.63

Eigen_PC

Uncertain

0.61

FATHMM_MKL

Uncertain

0.91

LIST_S2

Uncertain

0.92

D;D;D;D;D;D;D;.;.;.;.;.

M_CAP

Benign

0.082

MetaRNN

Uncertain

0.57

D;D;D;D;D;D;D;D;D;D;D;D

MetaSVM

Benign

-0.74

MutationAssessor

Benign

1.8

L;L;L;L;L;L;L;L;L;L;L;L

MutationTaster

Benign

0.65

D;D;D;D;D;D;D;D;D;D;D;D;D

PrimateAI

Uncertain

0.53

PROVEAN

Uncertain

-2.6

D;D;D;D;D;N;N;D;D;.;.;.

REVEL

Benign

0.19

Sift

Uncertain

0.0010

D;D;D;D;D;D;D;D;D;.;.;.

Sift4G

Uncertain

0.028

D;T;D;T;D;D;D;D;D;D;T;T

Polyphen

1.0

D;D;D;.;D;D;D;D;D;D;D;.

Vest4

0.62

MutPred

0.24

Gain of catalytic residue at E7 (P = 0.0864);Gain of catalytic residue at E7 (P = 0.0864);Gain of catalytic residue at E7 (P = 0.0864);Gain of catalytic residue at E7 (P = 0.0864);Gain of catalytic residue at E7 (P = 0.0864);Gain of catalytic residue at E7 (P = 0.0864);Gain of catalytic residue at E7 (P = 0.0864);Gain of catalytic residue at E7 (P = 0.0864);Gain of catalytic residue at E7 (P = 0.0864);Gain of catalytic residue at E7 (P = 0.0864);Gain of catalytic residue at E7 (P = 0.0864);Gain of catalytic residue at E7 (P = 0.0864);

MVP

0.79

MPC

0.76

ClinPred

0.87

GERP RS

5.1

Varity_R

0.17

gMVP

0.18

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