rs63751264

Variant names:

• chr17-46018726-A-T
• rs63751264
• NM_001377265.1:c.2282A>T

Variant summary

Our verdict is Uncertain significance. The variant received 4 ACMG points: 5P and 1B. PM1 PM2 PP5 BP4

The NM_001377265.1(MAPT):​c.2282A>T​(p.Lys761Ile) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Pathogenic (no stars).

• Frequency: Genomes: not found (cov: 31)
• Consequence: MAPT NM_001377265.1 missense
• Clinical Significance: Pathogenic no assertion criteria provided P:1 O:1
• Conservation: PhyloP100: 1.12
• Publications: 90 publications found

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):

• late-onset Parkinson disease

  Inheritance: AD, Unknown Classification: STRONG, LIMITED Submitted by: Genomics England PanelApp, Labcorp Genetics (formerly Invitae)
• Pick disease

  Inheritance: AD Classification: STRONG Submitted by: Genomics England PanelApp, Labcorp Genetics (formerly Invitae)
• semantic dementia

  Inheritance: AD Classification: STRONG Submitted by: Genomics England PanelApp
• supranuclear palsy, progressive, 1

  Inheritance: AD Classification: STRONG Submitted by: Genomics England PanelApp
• progressive supranuclear palsy-parkinsonism syndrome

  Inheritance: AR Classification: MODERATE, LIMITED Submitted by: Genomics England PanelApp, Labcorp Genetics (formerly Invitae)

ACMG classification

Our verdict: Uncertain_significance. The variant received 4 ACMG points.

• PM1: In a hotspot region, there are 4 aminoacids with missense pathogenic changes in the window of +-8 aminoacids around while only 0 benign, 3 uncertain in NM_001377265.1
• PM2: Very rare variant in population databases, with high coverage
• PP5: Variant 17-46018726-A-T is Pathogenic according to our data. Variant chr17-46018726-A-T is described in ClinVar as Pathogenic. ClinVar VariationId is 14260.Status of the report is no_assertion_criteria_provided, 0 stars.
• BP4: Computational evidence support a benign effect (MetaRNN=0.29861975). . Strength limited to SUPPORTING due to the PP5.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_001377265.1. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	MAPT	NM_001377265.1	MANE Select	c.2282A>T	p.Lys761Ile	missense	Exon 12 of 13	NP_001364194.1	A0A7I2PJZ2
	MAPT	NM_001123066.4		c.2111A>T	p.Lys704Ile	missense	Exon 14 of 15	NP_001116538.2	P10636-9
	MAPT	NM_016835.5		c.2057A>T	p.Lys686Ile	missense	Exon 13 of 14	NP_058519.3	P10636-1

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	MAPT	ENST00000262410.10	TSL:1 MANE Select	c.2282A>T	p.Lys761Ile	missense	Exon 12 of 13	ENSP00000262410.6	A0A7I2PJZ2
	MAPT	ENST00000344290.10	TSL:1	c.1991A>T	p.Lys664Ile	missense	Exon 10 of 11	ENSP00000340820.6	A0A7I2PLE3
	MAPT	ENST00000351559.10	TSL:1	c.1106A>T	p.Lys369Ile	missense	Exon 11 of 12	ENSP00000303214.7	P10636-8

Frequencies

GnomAD3 genomes Cov.: 31

GnomAD4 exome Cov.: 30

GnomAD4 genome Cov.: 31

ClinVar

ClinVar submissions

Significance: Pathogenic

Revision: no assertion criteria provided

Pathogenic	VUS	Benign	Condition
1	-	-	Pick disease (1)
-	-	-	not provided (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	0.86
BayesDel_addAF	Uncertain	0.088	D
BayesDel_noAF	Benign	-0.11
CADD	Uncertain	25
DANN	Uncertain	0.99
DEOGEN2	Uncertain	0.71	D
Eigen	Benign	-0.16
Eigen_PC	Benign	-0.031
FATHMM_MKL	Uncertain	0.85	D
LIST_S2	Uncertain	0.90	D
M_CAP	Benign	0.017	T
MetaRNN	Benign	0.30	T
MetaSVM	Benign	-1.0	T
MutationAssessor	Benign	0.55	N
PhyloP100		1.1
PrimateAI	Uncertain	0.70	T
PROVEAN	Uncertain	-4.1	D
REVEL	Benign	0.25
Sift	Benign	0.048	D
Sift4G	Benign	0.29	T
Polyphen		0.16	B
Vest4		0.45
MutPred		0.69		Loss of disorder (P = 0.0187)
MVP		0.68
MPC		1.7
ClinPred		0.47	T
GERP RS		4.8
Varity_R		0.74
gMVP		0.94
Mutation Taster		=3/97	disease causing (ClinVar)

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

Other links and lift over

dbSNP: rs63751264; hg19: chr17-44096092;