chr5-179344081-C-A

Variant names:

• chr5-179344081-C-A
• rs2271211
• NM_014244.5:c.220G>T

Variant summary

Our verdict is Uncertain significance. The variant received 0 ACMG points: 2P and 2B. PM2 BP4_Moderate

The NM_014244.5(ADAMTS2):​c.220G>T​(p.Val74Leu) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a benign outcome for this variant. 15/22 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. V74M) has been classified as Benign.

• Frequency: Genomes: not found (cov: 34)
• Consequence: ADAMTS2 NM_014244.5 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 0.738
• Publications: 0 publications found

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

ACMG classification

Our verdict: Uncertain_significance. The variant received 0 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.22099271).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
ADAMTS2	NM_014244.5	c.220G>T	p.Val74Leu	missense_variant	Exon 2 of 22	ENST00000251582.12	NP_055059.2
ADAMTS2	NM_021599.4	c.220G>T	p.Val74Leu	missense_variant	Exon 2 of 11		NP_067610.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
ADAMTS2	ENST00000251582.12	c.220G>T	p.Val74Leu	missense_variant	Exon 2 of 22	1	NM_014244.5	ENSP00000251582.7
ADAMTS2	ENST00000274609.5	c.220G>T	p.Val74Leu	missense_variant	Exon 2 of 11	1		ENSP00000274609.5
ADAMTS2	ENST00000518335.3	c.220G>T	p.Val74Leu	missense_variant	Exon 2 of 21	3		ENSP00000489888.2
ADAMTS2	ENST00000698889.1	n.220G>T		non_coding_transcript_exon_variant	Exon 2 of 21			ENSP00000514008.1

Frequencies

GnomAD3 genomes Cov.: 34

GnomAD4 exome Cov.: 35

GnomAD4 genome Cov.: 34

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.16
BayesDel_addAF	Benign	-0.15	T
BayesDel_noAF	Benign	-0.46
CADD	Benign	22
DANN	Uncertain	0.98
DEOGEN2	Benign	0.097	T;.;.
Eigen	Benign	-0.29
Eigen_PC	Benign	-0.085
FATHMM_MKL	Benign	0.67	D
M_CAP	Benign	0.019	T
MetaRNN	Benign	0.22	T;T;T
MetaSVM	Benign	-1.1	T
MutationAssessor	Benign	0.58	N;.;N
PhyloP100		0.74
PrimateAI	Uncertain	0.73	T
PROVEAN	Benign	-0.65	N;.;N
REVEL	Benign	0.089
Sift	Benign	0.28	T;.;T
Sift4G	Benign	0.20	T;.;T
Polyphen		0.013	B;.;B
Vest4		0.073
MutPred		0.46		Gain of helix (P = 0.0854);Gain of helix (P = 0.0854);Gain of helix (P = 0.0854);
MVP		0.24
MPC		0.40
ClinPred		0.75	D
GERP RS		4.2
Varity_R		0.14
gMVP		0.60
Mutation Taster		=93/7	polymorphism

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.050		Details are displayed if max score is > 0.2

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Other links and lift over

dbSNP: rs2271211; hg19: chr5-178771082;