Genetic Variant ADAMTS13:p.Cys347Arg (chr9-133432639-T-C) – ACMG Classification: Likely_pathogenic (6 pts)

Variant summary

Our verdict is Likely pathogenic. The variant received 6 ACMG points: 6P and 0B. PM2PP3_Strong

The NM_139027.6(ADAMTS13):c.1039T>C(p.Cys347Arg) variant causes a missense change. The variant allele was found at a frequency of 0.000000711 in 1,406,880 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. C347S) has been classified as Uncertain significance.

Frequency

Genomes: not found (cov: 32)

Exomes 𝑓: 7.1e-7 ( 0 hom. )

Consequence

ADAMTS13
NM_139027.6 missense

Scores

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: 7.10

Publications

0 publications found

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 Gene-Disease associations (from GenCC):

congenital thrombotic thrombocytopenic purpura
Inheritance: AR Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: Genomics England PanelApp, Orphanet, ClinGen, Labcorp Genetics (formerly Invitae)

ADAMTS13 links:

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ACMG classification

Classification was made for transcript

Our verdict: Likely_pathogenic. The variant received 6 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

PP3

MetaRNN computational evidence supports a deleterious effect, 0.991

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
ADAMTS13	NM_139027.6 link	c.1039T>C	p.Cys347Arg	missense_variant	Exon 9 of 29	ENST00000355699.7	NP_620596.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
ADAMTS13	ENST00000355699.7 link	c.1039T>C	p.Cys347Arg	missense_variant	Exon 9 of 29	1	NM_139027.6	ENSP00000347927.2

Frequencies

GnomAD3 genomes

Cov.:

GnomAD4 exome

AF:

7.11e-7

AC:

AN:

1406880

Hom.:

Cov.:

AF XY:

0.00000144

AC XY:

AN XY:

694508

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

32306

American (AMR)

AF:

0.00

AC:

AN:

36596

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

25292

East Asian (EAS)

AF:

0.00

AC:

AN:

36916

South Asian (SAS)

AF:

0.00

AC:

AN:

79910

European-Finnish (FIN)

AF:

0.00

AC:

AN:

48932

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5708

European-Non Finnish (NFE)

AF:

9.23e-7

AC:

AN:

1082876

Other (OTH)

AF:

0.00

AC:

AN:

58344

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.475

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

GnomAD4 genome

Cov.:

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Pathogenic

0.95

BayesDel_addAF

Pathogenic

0.27

BayesDel_noAF

Pathogenic

0.15

CADD

Pathogenic

(source)

DANN

Uncertain

0.99

DEOGEN2

Uncertain

0.76

D;T;.;.

Eigen

Pathogenic

0.78

Eigen_PC

Uncertain

0.66

FATHMM_MKL

Pathogenic

0.98

LIST_S2

Uncertain

0.86

D;T;D;T

M_CAP

Pathogenic

0.45

MetaRNN

Pathogenic

0.99

D;D;D;D

MetaSVM

Uncertain

0.63

MutationAssessor

Pathogenic

3.3

M;.;M;.

PhyloP100

7.1

PrimateAI

Uncertain

0.60

PROVEAN

Pathogenic

-10

D;.;D;D

REVEL

Pathogenic

0.78

Sift

Pathogenic

0.0

D;.;D;D

Sift4G

Pathogenic

0.0

D;D;D;.

Vest4

0.92

ClinPred

1.0

GERP RS

5.3

Varity_R

0.62

gMVP

0.99

Mutation Taster

=0/100

disease causing

(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

ClinVar

Computational scores

Splicing

Publications

Other links and lift over