Genetic Variant ADAMTS13:p.Glu740Gln (chr9-133442727-G-C) – ACMG Classification: Likely_benign (-2 pts)

Variant summary

Our verdict is Likely benign. The variant received -2 ACMG points: 2P and 4B. PM2BP4_Strong

The NM_139027.6(ADAMTS13):c.2218G>C(p.Glu740Gln) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000137 in 1,460,414 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 17/22 in silico tools predict a benign 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. E740K) has been classified as Likely benign.

Frequency

Genomes: not found (cov: 33)

Exomes 𝑓: 0.0000014 ( 0 hom. )

Consequence

ADAMTS13
NM_139027.6 missense

Scores

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: -0.677

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:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Likely_benign. The variant received -2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.062883586).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
ADAMTS13	NM_139027.6 link	c.2218G>C	p.Glu740Gln	missense_variant	Exon 18 of 29	ENST00000355699.7	NP_620596.2	Q76LX8-2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
ADAMTS13	ENST00000355699.7 link	c.2218G>C	p.Glu740Gln	missense_variant	Exon 18 of 29	1	NM_139027.6	ENSP00000347927.2		Q76LX8-2

Frequencies

GnomAD3 genomes

Cov.:

GnomAD4 exome

AF:

0.00000137

AC:

AN:

1460414

Hom.:

Cov.:

AF XY:

0.00000275

AC XY:

AN XY:

726522

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

33480

American (AMR)

AF:

0.00

AC:

AN:

44718

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26132

East Asian (EAS)

AF:

0.00

AC:

AN:

39696

South Asian (SAS)

AF:

0.00

AC:

AN:

86250

European-Finnish (FIN)

AF:

0.00

AC:

AN:

52156

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5726

European-Non Finnish (NFE)

AF:

0.00000180

AC:

AN:

1111908

Other (OTH)

AF:

0.00

AC:

AN:

60348

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.425

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

GnomAD4 genome

Cov.:

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.073

BayesDel_addAF

Benign

-0.27

BayesDel_noAF

Benign

-0.62

CADD

Benign

0.044

(source)

DANN

Benign

0.39

DEOGEN2

Benign

0.061

T;.;.

Eigen

Benign

-1.4

Eigen_PC

Benign

-1.4

FATHMM_MKL

Benign

0.062

LIST_S2

Benign

0.23

T;T;T

M_CAP

Benign

0.014

MetaRNN

Benign

0.063

T;T;T

MetaSVM

Benign

-1.0

MutationAssessor

Benign

0.045

N;N;.

PhyloP100

-0.68

PrimateAI

Benign

0.27

PROVEAN

Benign

-0.76

N;N;N

REVEL

Benign

0.028

Sift

Benign

0.36

T;T;T

Sift4G

Benign

0.43

T;T;.

Polyphen

0.044

B;B;B

Vest4

0.065

MutPred

0.25

Loss of phosphorylation at Y745 (P = 0.2221);Loss of phosphorylation at Y745 (P = 0.2221);.;

MVP

0.53

MPC

0.34

ClinPred

0.044

GERP RS

-1.0

Varity_R

0.043

gMVP

0.35

Mutation Taster

=94/6

polymorphism

(source)

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.010

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

Age Distribution

ClinVar

Computational scores

Splicing

Publications

Other links and lift over