Genetic Variant NM_014244.5:c.2648G>C (chr5-179126100-C-G) – ACMG Classification: Uncertain_significance (2 pts)

Variant summary

Our verdict is Uncertain significance. The variant received 2 ACMG points: 2P and 0B. PM2

The NM_014244.5(ADAMTS2):c.2648G>C(p.Arg883Pro) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000000685 in 1,460,728 control chromosomes in the GnomAD database, with no homozygous occurrence. 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. R883Q) has been classified as Uncertain significance.

Frequency

Genomes: not found (cov: 34)

Exomes 𝑓: 6.8e-7 ( 0 hom. )

Consequence

ADAMTS2
NM_014244.5 missense

Scores

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: 3.28

Publications

0 publications found

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 Gene-Disease associations (from GenCC):

Ehlers-Danlos syndrome, dermatosparaxis type
Inheritance: AR Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: Labcorp Genetics (formerly Invitae), Genomics England PanelApp, Orphanet, G2P, PanelApp Australia, Illumina

ADAMTS2 links:

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ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 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.2648G>C	p.Arg883Pro	missense_variant	Exon 18 of 22	ENST00000251582.12	NP_055059.2	O95450-1
ADAMTS2	XM_047417895.1 link	c.2153G>C	p.Arg718Pro	missense_variant	Exon 17 of 21		XP_047273851.1
ADAMTS2	XM_047417896.1 link	c.1766G>C	p.Arg589Pro	missense_variant	Exon 16 of 20		XP_047273852.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	UniProt
ADAMTS2	ENST00000251582.12 link	c.2648G>C	p.Arg883Pro	missense_variant	Exon 18 of 22	1	NM_014244.5	ENSP00000251582.7	O95450-1
ADAMTS2	ENST00000518335.3 link	c.2648G>C	p.Arg883Pro	missense_variant	Exon 18 of 21	3		ENSP00000489888.2	A0A1B0GTY3
ADAMTS2	ENST00000698889.1 link	n.2648G>C		non_coding_transcript_exon_variant	Exon 18 of 21			ENSP00000514008.1	A0A8V8TMU7

Frequencies

GnomAD3 genomes

Cov.:

GnomAD4 exome

AF:

6.85e-7

AC:

AN:

1460728

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

726688

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

33478

American (AMR)

AF:

0.00

AC:

AN:

44722

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26132

East Asian (EAS)

AF:

0.00

AC:

AN:

39700

South Asian (SAS)

AF:

0.00

AC:

AN:

86258

European-Finnish (FIN)

AF:

0.00

AC:

AN:

52318

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5768

European-Non Finnish (NFE)

AF:

8.99e-7

AC:

AN:

1111980

Other (OTH)

AF:

0.00

AC:

AN:

60372

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.525

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

0.97

BayesDel_addAF

Uncertain

0.079

BayesDel_noAF

Benign

-0.12

CADD

Pathogenic

(source)

DANN

Uncertain

1.0

DEOGEN2

Benign

0.39

T;.

Eigen

Uncertain

0.57

Eigen_PC

Uncertain

0.47

FATHMM_MKL

Uncertain

0.95

M_CAP

Uncertain

0.12

MetaRNN

Uncertain

0.73

D;D

MetaSVM

Uncertain

-0.17

MutationAssessor

Pathogenic

3.3

M;.

PhyloP100

3.3

PrimateAI

Uncertain

0.77

PROVEAN

Pathogenic

-5.5

D;.

REVEL

Uncertain

0.40

Sift

Uncertain

0.0020

D;.

Sift4G

Uncertain

0.0020

D;.

Polyphen

1.0

D;.

Vest4

0.70

MutPred

0.51

Loss of MoRF binding (P = 0.0104);Loss of MoRF binding (P = 0.0104);

MVP

0.60

MPC

1.5

ClinPred

0.99

GERP RS

3.8

Varity_R

0.86

gMVP

0.98

Mutation Taster

=72/28

polymorphism

(source)

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.060

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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NM_014244.5:c.2648G>C

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