chr9-133536785-G-A

Variant names:

• chr9-133536785-G-A
• rs777512904
• NM_014694.4:c.73G>A

Variant summary

Our verdict is Likely benign. The variant received -2 ACMG points: 2P and 4B. PM2 BP4_Strong

The NM_014694.4(ADAMTSL2):​c.73G>A​(p.Val25Met) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000000684 in 1,461,802 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 16/21 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. V25L) has been classified as Uncertain significance.

• Frequency:
  • Genomes: not found (cov: 34)
  • Exomes 𝑓: 6.8e-7 (0 hom.)
• Consequence: ADAMTSL2 NM_014694.4 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 0.520
• Publications: 0 publications found

Genes affected

ADAMTSL2 (HGNC:14631): (ADAMTS like 2) This gene encodes a member of the ADAMTS (a disintegrin and metalloproteinase with thrombospondin motifs) and ADAMTS-like 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 protein encoded by this gene lacks the protease domain, and is therefore of a member of the the ADAMTS-like protein subfamily. It is a secreted glycoprotein that binds the cell surface and extracellular matrix; it also interacts with latent transforming growth factor beta binding protein 1. Mutations in this gene have been associated with geleophysic dysplasia. [provided by RefSeq, Feb 2009]

ADAMTSL2 Gene-Disease associations (from GenCC):

• geleophysic dysplasia 1

  Inheritance: AR Classification: DEFINITIVE, STRONG Submitted by: Labcorp Genetics (formerly Invitae), Ambry Genetics, G2P
• Ehlers-Danlos syndrome

  Inheritance: AD Classification: LIMITED Submitted by: Ambry Genetics

ACMG classification

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=0.055009633).

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_014694.4. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	ADAMTSL2	NM_014694.4	MANE Select	c.73G>A	p.Val25Met	missense	Exon 2 of 19	NP_055509.2
	ADAMTSL2	NM_001145320.2		c.73G>A	p.Val25Met	missense	Exon 2 of 19	NP_001138792.1	Q86TH1

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	ADAMTSL2	ENST00000651351.2	MANE Select	c.73G>A	p.Val25Met	missense	Exon 2 of 19	ENSP00000498961.2	Q86TH1
	ADAMTSL2	ENST00000393061.7	TSL:1	c.400G>A	p.Val134Met	missense	Exon 2 of 19	ENSP00000376781.3	B1B0D4
	ADAMTSL2	ENST00000354484.8	TSL:1	c.73G>A	p.Val25Met	missense	Exon 2 of 19	ENSP00000346478.4	Q86TH1

Frequencies

GnomAD3 genomes Cov.: 34

GnomAD4 exome AF: 6.84e-7 AC: 1 AN: 1461802 Hom.: 0 Cov.: 33 AF XY: 0.00 AC XY: 0 AN XY: 727200

⚠️ The allele balance in gnomAD version 4 Exomes is significantly skewed from the expected value of 0.5.

African (AFR) AF: 0.0000299 AC: 1 AN: 33480

American (AMR) AF: 0.00 AC: 0 AN: 44720

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26134

East Asian (EAS) AF: 0.00 AC: 0 AN: 39700

South Asian (SAS) AF: 0.00 AC: 0 AN: 86252

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 53396

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5768

European-Non Finnish (NFE) AF: 0.00 AC: 0 AN: 1111962

Other (OTH) AF: 0.00 AC: 0 AN: 60390

⚠️ The allele balance in gnomAD4 Exomes is highly skewed from 0.5 (p-value = 0), which strongly suggests a high chance of mosaicism in these individuals.

GnomAD4 genome Cov.: 34

Alfa AF: 0.00 Hom.: 0

Bravo AF: 0.00000378

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.087
BayesDel_addAF	Benign	-0.18	T
BayesDel_noAF	Benign	-0.50
CADD	Benign	12
DANN	Benign	0.46
DEOGEN2	Benign	0.019	T
Eigen	Benign	-1.3
Eigen_PC	Benign	-1.3
FATHMM_MKL	Benign	0.031	N
LIST_S2	Benign	0.58	T
M_CAP	Benign	0.019	T
MetaRNN	Benign	0.055	T
MetaSVM	Benign	-1.0	T
PhyloP100		0.52
PrimateAI	Benign	0.31	T
PROVEAN	Benign	-0.29	N
REVEL	Benign	0.029
Sift	Uncertain	0.015	D
Sift4G	Benign	0.096	T
Polyphen		0.0	B
Vest4		0.11
MutPred		0.23		Gain of phosphorylation at T30 (P = 0.1005)
MVP		0.25
MPC		0.43
ClinPred		0.030	T
GERP RS		0.30
Varity_R		0.033
gMVP		0.18
Mutation Taster		=96/4	polymorphism

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

Other links and lift over

dbSNP: rs777512904; hg19: chr9-136401907;