chr5-179125113-C-T

Variant names:

Variant summary

Our verdict is Uncertain significance. Variant got 2 ACMG points: 2P and 0B. PM2

The NM_014244.5(ADAMTS2):c.2818G>A(p.Val940Met) variant causes a missense change. The variant allele was found at a frequency of 0.000207 in 1,612,876 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Uncertain significance (★★).

Frequency

Genomes: 𝑓 0.00022 ( 0 hom., cov: 33)

Exomes 𝑓: 0.00021 ( 0 hom. )

Consequence

ADAMTS2
NM_014244.5 missense

Scores

Clinical Significance

Uncertain significance criteria provided, multiple submitters, no conflicts U:9

Conservation

PhyloP100: 5.96

Variant links:

Genes affected

ADAMTS2 (HGNC:218): (ADAM metallopeptidase with thrombospondin type 1 motif 2) This gene encodes a member of the ADAMTS (a disintegrin and metalloproteinase with thrombospondin motifs) protein family. Members of the family share several distinct protein modules, including a propeptide region, a metalloproteinase domain, a disintegrin-like domain, and a thrombospondin type 1 (TS) motif. Individual members of this family differ in the number of C-terminal TS motifs, and some have unique C-terminal domains. The encoded preproprotein is proteolytically processed to generate the mature procollagen N-proteinase. This proteinase excises the N-propeptide of the fibrillar procollagens types I-III and type V. Mutations in this gene cause Ehlers-Danlos syndrome type VIIC, a recessively inherited connective-tissue disorder. Alternative splicing results in multiple transcript variants, at least one of which encodes an isoform that is proteolytically processed. [provided by RefSeq, Feb 2016]

ADAMTS2 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
ADAMTS2	NM_014244.5 link	c.2818G>A	p.Val940Met	missense_variant	Exon 19 of 22	ENST00000251582.12	NP_055059.2	O95450-1
ADAMTS2	XM_047417895.1 link	c.2323G>A	p.Val775Met	missense_variant	Exon 18 of 21		XP_047273851.1
ADAMTS2	XM_047417896.1 link	c.1936G>A	p.Val646Met	missense_variant	Exon 17 of 20		XP_047273852.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	UniProt
ADAMTS2	ENST00000251582.12 link	c.2818G>A	p.Val940Met	missense_variant	Exon 19 of 22	1	NM_014244.5	ENSP00000251582.7	O95450-1
ADAMTS2	ENST00000518335.3 link	c.2818G>A	p.Val940Met	missense_variant	Exon 19 of 21	3		ENSP00000489888.2	A0A1B0GTY3
ADAMTS2	ENST00000698889.1 link	n.2818G>A		non_coding_transcript_exon_variant	Exon 19 of 21			ENSP00000514008.1	A0A8V8TMU7

Frequencies

GnomAD3 genomes

AF:

0.000223

AC:

AN:

152224

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000327

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.000426

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.000196

AC:

AN:

250364

Hom.:

AF XY:

0.000214

AC XY:

AN XY:

135492

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.0000289

Gnomad ASJ exome

AF:

0.0000994

Gnomad EAS exome

AF:

0.0000545

Gnomad SAS exome

AF:

0.0000327

Gnomad FIN exome

AF:

0.0000465

Gnomad NFE exome

AF:

0.000390

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.000205

AC:

300

AN:

1460652

Hom.:

Cov.:

AF XY:

0.000216

AC XY:

157

AN XY:

726678

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.0000224

Gnomad4 ASJ exome

AF:

0.0000383

Gnomad4 EAS exome

AF:

0.0000252

Gnomad4 SAS exome

AF:

0.0000232

Gnomad4 FIN exome

AF:

0.0000382

Gnomad4 NFE exome

AF:

0.000255

Gnomad4 OTH exome

AF:

0.000149

GnomAD4 genome

AF:

0.000223

AC:

AN:

152224

Hom.:

Cov.:

AF XY:

0.000229

AC XY:

AN XY:

74364

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.000327

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.000426

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.000245

Hom.:

Bravo

AF:

0.000170

ESP6500AA

AF:

0.00

AC:

ESP6500EA

AF:

0.000349

AC:

ExAC

AF:

0.000239

AC:

EpiCase

AF:

0.000218

EpiControl

AF:

0.0000593

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:9

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

Ehlers-Danlos syndrome, dermatosparaxis type

Uncertain:4

Jan 13, 2018

Illumina Laboratory Services, Illumina

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

This variant was observed in the ICSL laboratory as part of a predisposition screen in an ostensibly healthy population. It had not been previously curated by ICSL or reported in the Human Gene Mutation Database (HGMD: prior to June 1st, 2018), and was therefore a candidate for classification through an automated scoring system. Utilizing variant allele frequency, disease prevalence and penetrance estimates, and inheritance mode, an automated score was calculated to assess if this variant is too frequent to cause the disease. Based on the score, this variant could not be ruled out of causing disease and therefore its association with disease required further investigation. A literature search was performed for the gene, cDNA change, and amino acid change (if applicable). No publications were found based on this search. This variant was therefore classified as a variant of unknown significance for this disease. -

Jan 29, 2024

Labcorp Genetics (formerly Invitae), Labcorp

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

This sequence change replaces valine, which is neutral and non-polar, with methionine, which is neutral and non-polar, at codon 940 of the ADAMTS2 protein (p.Val940Met). This variant is present in population databases (rs367796431, gnomAD 0.04%). This variant has not been reported in the literature in individuals affected with ADAMTS2-related conditions. ClinVar contains an entry for this variant (Variation ID: 353095). Algorithms developed to predict the effect of missense changes on protein structure and function output the following: SIFT: "Not Available"; PolyPhen-2: "Possibly Damaging"; Align-GVGD: "Not Available". The methionine amino acid residue is found in multiple mammalian species, which suggests that this missense change does not adversely affect protein function. In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance. -

Apr 05, 2022

Molecular Genetics, Royal Melbourne Hospital

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

This sequence change in ADAMTS2 is predicted to replace valine with methionine at codon 940, p.(Val940Met). The methionine residue is highly conserved, but methionine is present in two vertebrates (100 vertebrates, UCSC). It is located in thrombospondin type 1 3 domain. There is a moderate physicochemical difference between valine and methionine. ADAMTS2, in which the variant was identified, is a gene for which primarily truncating variants are known to cause disease (ClinVar). The highest population minor allele frequency in gnomAD v2.1 is 0.04% (55/128,324 alleles, 0 homozygotes) in the European (non-Finnish) population, which is consistent with a recessive condition. This variant has been reported as a variant of uncertain significance (ClinVar ID: 353095), and reported heterozygous in a hypermobile Ehlers-Danlos syndrome (https://doi.org/10.1038/s41431-019-0404-7). Multiple lines of computational evidence have conflicting predictions for the missense substitution (4/6 algorithms predict deleterious). Based on the classification scheme RMH Modified ACMG Guidelines v1.4.0, this variant is classified as a VARIANT OF UNCERTAIN SIGNIFICANCE. Following criteria are met: PM2_Supporting, BP1. -

Nov 11, 2019

Natera, Inc.

Significance: Uncertain significance

Review Status: no assertion criteria provided

Collection Method: clinical testing

- -

not provided

Uncertain:3

Apr 13, 2020

Mayo Clinic Laboratories, Mayo Clinic

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Oct 01, 2022

CeGaT Center for Human Genetics Tuebingen

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

ADAMTS2: PM2, BP4 -

Feb 24, 2025

GeneDx

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

Has not been previously published as pathogenic or benign to our knowledge; In silico analysis supports that this missense variant has a deleterious effect on protein structure/function -

not specified

Uncertain:1

Feb 25, 2025

Women's Health and Genetics/Laboratory Corporation of America, LabCorp

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

Variant summary: ADAMTS2 c.2818G>A (p.Val940Met) results in a conservative amino acid change located in the thrombospondin type 1 repeat domain (IPR000884) of the encoded protein sequence. Four of five in-silico tools predict a damaging effect of the variant on protein function. The variant allele was found at a frequency of 0.0002 in 250364 control chromosomes. This frequency is not significantly higher than estimated for a pathogenic variant in ADAMTS2 causing Ehlers-Danlos syndrome, dermatosparaxis type (0.0002 vs 0.0011), allowing no conclusion about variant significance. To our knowledge, no occurrence of c.2818G>A in individuals affected with Ehlers-Danlos syndrome, dermatosparaxis type and no experimental evidence demonstrating its impact on protein function have been reported. ClinVar contains an entry for this variant (Variation ID: 353095). Based on the evidence outlined above, the variant was classified as uncertain significance. -

See cases

Uncertain:1

Aug 26, 2021

Laboratorio de Genetica e Diagnostico Molecular, Hospital Israelita Albert Einstein

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Pathogenic

0.63

BayesDel_addAF

Benign

-0.24

BayesDel_noAF

Benign

-0.22

CADD

Uncertain

DANN

Uncertain

1.0

DEOGEN2

Uncertain

0.49

T;.

Eigen

Uncertain

0.63

Eigen_PC

Uncertain

0.47

FATHMM_MKL

Uncertain

0.86

M_CAP

Uncertain

0.088

MetaRNN

Uncertain

0.48

T;T

MetaSVM

Uncertain

0.26

MutationAssessor

Pathogenic

4.7

H;.

PrimateAI

Benign

0.47

PROVEAN

Uncertain

-2.6

D;.

REVEL

Uncertain

0.42

Sift

Uncertain

0.017

D;.

Sift4G

Pathogenic

0.0010

D;.

Polyphen

1.0

D;.

Vest4

0.52

MVP

0.64

MPC

1.0

ClinPred

0.53

GERP RS

4.6

Varity_R

0.12

gMVP

0.57

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

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