rs281875299

Positions:

chr9-133440344-C-T

Variant summary

Our verdict is Pathogenic. Variant got 13 ACMG points: 13P and 0B. PM1PM2PP3PP5_Very_Strong

The NM_139027.6(ADAMTS13):c.1787C>T(p.Ala596Val) variant causes a missense, splice region change. The variant allele was found at a frequency of 0.00000753 in 1,461,632 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. 2/3 splice prediction tools predicting alterations to normal splicing. Variant has been reported in ClinVar as Pathogenic (★★).

Frequency

Genomes: not found (cov: 33)

Exomes 𝑓: 0.0000075 ( 0 hom. )

Consequence

ADAMTS13
NM_139027.6 missense, splice_region

Scores

Splicing: ADA: 0.9957

Clinical Significance

Pathogenic criteria provided, multiple submitters, no conflicts P:2O:1

Conservation

PhyloP100: 4.82

Variant links:

Genes affected

ADAMTS13 (HGNC:1366): (ADAM metallopeptidase with thrombospondin type 1 motif 13) This gene encodes a member of a family of proteins containing several distinct regions, including a metalloproteinase domain, a disintegrin-like domain, and a thrombospondin type 1 (TS) motif. The enzyme encoded by this gene specifically cleaves von Willebrand Factor (vWF). Defects in this gene are associated with thrombotic thrombocytopenic purpura. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Jul 2013]

ADAMTS13 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Pathogenic. Variant got 13 ACMG points.

PM1

In a region_of_interest Spacer (size 129) in uniprot entity ATS13_HUMAN there are 8 pathogenic changes around while only 2 benign (80%) in NM_139027.6

PM2

Very rare variant in population databases, with high coverage;

PP3

Splicing scoreres supports a deletorius effect: Scorers claiming Pathogenic: dbscSNV1_ADA, dbscSNV1_RF. No scorers claiming Uncertain. Scorers claiming Benign: max_spliceai.

PP5

Variant 9-133440344-C-T is Pathogenic according to our data. Variant chr9-133440344-C-T is described in ClinVar as [Pathogenic]. Clinvar id is 68805.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars. Variant chr9-133440344-C-T is described in UniProt as null. Variant chr9-133440344-C-T is described in Lovd as [Pathogenic].

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
ADAMTS13	NM_139027.6 linkuse as main transcript	c.1787C>T	p.Ala596Val	missense_variant, splice_region_variant	16/29	ENST00000355699.7

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
ADAMTS13	ENST00000355699.7 linkuse as main transcript	c.1787C>T	p.Ala596Val	missense_variant, splice_region_variant	16/29	1	NM_139027.6	A2	Q76LX8-2

Frequencies

GnomAD3 genomes

Cov.:

GnomAD3 exomes

AF:

0.0000119

AC:

AN:

251126

Hom.:

AF XY:

0.0000147

AC XY:

AN XY:

135838

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.0000980

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.00000753

AC:

AN:

1461632

Hom.:

Cov.:

AF XY:

0.00000963

AC XY:

AN XY:

727108

show subpopulations

Gnomad4 AFR exome

AF:

0.0000299

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.0000812

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00000270

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

Cov.:

ClinVar

Significance: Pathogenic

Submissions summary: Pathogenic:2Other:1

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

not provided

Pathogenic:1Other:1

Pathogenic, criteria provided, single submitter	clinical testing	Labcorp Genetics (formerly Invitae), Labcorp	Apr 12, 2023	For these reasons, this variant has been classified as Pathogenic. Experimental studies have shown that this missense change affects ADAMTS13 function (PMID: 17849048, 22783805). An algorithm developed to predict the effect of missense changes on protein structure and function (PolyPhen-2) suggests that this variant is likely to be disruptive. ClinVar contains an entry for this variant (Variation ID: 68805). This missense change has been observed in individual(s) with thrombotic thrombocytopenic purpura (PMID: 15009458, 22783805, 28678087, 30312976, 31064749, 32496441). In at least one individual the data is consistent with being in trans (on the opposite chromosome) from a pathogenic variant. This variant is present in population databases (rs281875299, gnomAD 0.01%). This sequence change replaces alanine, which is neutral and non-polar, with valine, which is neutral and non-polar, at codon 596 of the ADAMTS13 protein (p.Ala596Val). -
not provided, no classification provided	literature only	UniProtKB/Swiss-Prot	-	- -

Thrombotic thrombocytopenic purpura

Pathogenic:1

Pathogenic, criteria provided, single submitter

research

NIHR Bioresource Rare Diseases, University of Cambridge

Feb 01, 2019

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Pathogenic

0.75

BayesDel_addAF

Pathogenic

0.18

BayesDel_noAF

Pathogenic

0.22

CADD

Pathogenic

DANN

Pathogenic

1.0

DEOGEN2

Uncertain

0.54

D;T;.;.

Eigen

Pathogenic

0.69

Eigen_PC

Uncertain

0.57

FATHMM_MKL

Uncertain

0.95

LIST_S2

Uncertain

0.91

D;D;D;D

M_CAP

Pathogenic

0.41

MetaRNN

Pathogenic

0.96

D;D;D;D

MetaSVM

Uncertain

0.38

MutationAssessor

Pathogenic

3.3

M;.;M;.

MutationTaster

Benign

1.0

D;D;D;D;D

PrimateAI

Uncertain

0.59

PROVEAN

Uncertain

-3.8

D;.;D;D

REVEL

Pathogenic

0.68

Sift

Uncertain

0.0020

D;.;D;D

Sift4G

Uncertain

0.0030

D;D;D;.

Polyphen

1.0

D;.;D;D

Vest4

0.78

MutPred

0.80

Gain of MoRF binding (P = 0.1253);.;Gain of MoRF binding (P = 0.1253);.;

MVP

0.92

MPC

1.1

ClinPred

0.95

GERP RS

5.2

Varity_R

0.22

gMVP

0.93

Splicing

Name

Calibrated prediction

Score

Prediction

dbscSNV1_ADA

Pathogenic

1.0

dbscSNV1_RF

Pathogenic

0.83

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