chr17-46010418-C-T

Variant names:

• chr17-46010418-C-T
• rs63751011
• NM_001377265.1:c.2091+16C>T

Variant summary

Our verdict is Likely pathogenic. The variant received 7 ACMG points: 8P and 1B. PP5_Very_Strong BP4

The NM_001377265.1(MAPT):​c.2091+16C>T variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000729 in 1,372,328 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Pathogenic (★★).

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 0.0000073 (0 hom.)
• Consequence: MAPT NM_001377265.1 intron
• Clinical Significance: Pathogenic criteria provided, multiple submitters, no conflicts P:12 O:1
• Conservation: PhyloP100: 2.02
• Publications: 15 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):

• 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

ACMG classification

Our verdict: Likely_pathogenic. The variant received 7 ACMG points.

• PP5: Variant 17-46010418-C-T is Pathogenic according to our data. Variant chr17-46010418-C-T is described in ClinVar as Pathogenic. ClinVar VariationId is 98222.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.
• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.52). . 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

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	MAPT	NM_001377265.1	MANE Select	c.2091+16C>T		intron	N/A	NP_001364194.1
	MAPT	NM_001123066.4		c.1920+16C>T		intron	N/A	NP_001116538.2
	MAPT	NM_016835.5		c.1866+16C>T		intron	N/A	NP_058519.3

Ensembl Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	MAPT	ENST00000262410.10	TSL:1 MANE Select	c.2091+16C>T		intron	N/A	ENSP00000262410.6
	MAPT	ENST00000344290.10	TSL:1	c.1801-3825C>T		intron	N/A	ENSP00000340820.6
	MAPT	ENST00000351559.10	TSL:1	c.915+16C>T		intron	N/A	ENSP00000303214.7

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome AF: 0.00000729 AC: 10 AN: 1372328 Hom.: 0 Cov.: 25 AF XY: 0.00000441 AC XY: 3 AN XY: 679568

African (AFR) AF: 0.00 AC: 0 AN: 31674

American (AMR) AF: 0.00 AC: 0 AN: 36584

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 25052

East Asian (EAS) AF: 0.00 AC: 0 AN: 37124

South Asian (SAS) AF: 0.00 AC: 0 AN: 79136

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 49872

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5632

European-Non Finnish (NFE) AF: 0.00000857 AC: 9 AN: 1050116

Other (OTH) AF: 0.0000175 AC: 1 AN: 57138

GnomAD4 genome Cov.: 32

Alfa AF: 0.00 Hom.: 0

Bravo AF: 0.00000378

ClinVar

ClinVar submissions as Germline

Significance: Pathogenic

Revision: criteria provided, multiple submitters, no conflicts

Pathogenic	VUS	Benign	Condition
4	-	-	Frontotemporal dementia (4)
3	-	-	not provided (4)
2	-	-	MAPT-related disorder (2)
1	-	-	Dementia (1)
1	-	-	Memory impairment;C0234985:Mental deterioration;C0338451:Frontotemporal dementia (1)
1	-	-	Progressive supranuclear palsy-parkinsonism syndrome (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.52
CADD	Benign	17
DANN	Benign	0.90
PhyloP100		2.0
Mutation Taster		=0/100	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: rs63751011; hg19: chr17-44087784;