chr10-47325341-G-A

Variant names:

• chr10-47325341-G-A
• rs138904328
• NM_016204.4:c.847G>A

Variant summary

Our verdict is Likely benign. The variant received -3 ACMG points: 0P and 3B. BP4_Moderate BP6

The NM_016204.4(GDF2):​c.847G>A​(p.Val283Met) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000836 in 1,614,088 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 8/11 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars).

• Frequency:
  • Genomes: 𝑓 0.000066 (0 hom., cov: 33)
  • Exomes 𝑓: 0.000086 (0 hom.)
• Consequence: GDF2 NM_016204.4 missense
• Clinical Significance: Uncertain significance criteria provided, multiple submitters, no conflicts U:2
• Conservation: PhyloP100: -0.801
• Publications: 4 publications found

Genes affected

GDF2 (HGNC:4217): (growth differentiation factor 2) This gene encodes a secreted ligand of the TGF-beta (transforming growth factor-beta) superfamily of proteins. Ligands of this family bind various TGF-beta receptors leading to recruitment and activation of SMAD family transcription factors that regulate gene expression. The encoded preproprotein is proteolytically processed to generate each subunit of the disulfide-linked homodimer. This protein regulates cartilage and bone development, angiogenesis and differentiation of cholinergic central nervous system neurons. Mutations in this gene are associated with hereditary hemorrhagic telangiectasia. [provided by RefSeq, Jul 2016]

GDF2 Gene-Disease associations (from GenCC):

• pulmonary arterial hypertension

  Inheritance: AD Classification: DEFINITIVE Submitted by: ClinGen
• telangiectasia, hereditary hemorrhagic, type 1

  Inheritance: AD Classification: STRONG Submitted by: Labcorp Genetics (formerly Invitae)
• telangiectasia, hereditary hemorrhagic, type 5

  Inheritance: AD, Unknown, AR Classification: MODERATE, LIMITED Submitted by: Ambry Genetics, Labcorp Genetics (formerly Invitae), ClinGen, G2P
• hereditary hemorrhagic telangiectasia

  Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet

ACMG classification

Our verdict: Likely_benign. The variant received -3 ACMG points.

• BP4: Computational evidence support a benign effect (MetaRNN=0.08297181).
• BP6: Variant 10-47325341-G-A is Benign according to our data. Variant chr10-47325341-G-A is described in ClinVar as Conflicting_classifications_of_pathogenicity. ClinVar VariationId is 430360.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
GDF2	NM_016204.4	c.847G>A	p.Val283Met	missense_variant	Exon 2 of 2	ENST00000581492.3	NP_057288.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
GDF2	ENST00000581492.3	c.847G>A	p.Val283Met	missense_variant	Exon 2 of 2	1	NM_016204.4	ENSP00000463051.1

Frequencies

GnomAD3 genomes AF: 0.0000657 AC: 10 AN: 152214 Hom.: 0 Cov.: 33

Gnomad AFR AF: 0.0000724

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.000262

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: 0.0000441

Gnomad OTH AF: 0.00

GnomAD2 exomes AF: 0.0000278 AC: 7 AN: 251430 AF XY: 0.0000368

Gnomad AFR exome AF: 0.00

Gnomad AMR exome AF: 0.00

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.00

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.0000616

Gnomad OTH exome AF: 0.00

GnomAD4 exome AF: 0.0000855 AC: 125 AN: 1461874 Hom.: 0 Cov.: 32 AF XY: 0.0000674 AC XY: 49 AN XY: 727236

African (AFR) AF: 0.0000896 AC: 3 AN: 33480

American (AMR) AF: 0.00 AC: 0 AN: 44722

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26136

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

South Asian (SAS) AF: 0.0000232 AC: 2 AN: 86258

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 53406

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

European-Non Finnish (NFE) AF: 0.000103 AC: 115 AN: 1112008

Other (OTH) AF: 0.0000828 AC: 5 AN: 60396

GnomAD4 genome AF: 0.0000657 AC: 10 AN: 152214 Hom.: 0 Cov.: 33 AF XY: 0.0000807 AC XY: 6 AN XY: 74358

African (AFR) AF: 0.0000724 AC: 3 AN: 41462

American (AMR) AF: 0.000262 AC: 4 AN: 15288

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 3470

East Asian (EAS) AF: 0.00 AC: 0 AN: 5192

South Asian (SAS) AF: 0.00 AC: 0 AN: 4826

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 10618

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 316

European-Non Finnish (NFE) AF: 0.0000441 AC: 3 AN: 68038

Other (OTH) AF: 0.00 AC: 0 AN: 2092

Alfa AF: 0.00 Hom.: 0

Bravo AF: 0.0000869

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:2

Revision: criteria provided, multiple submitters, no conflicts

Submissions by phenotype

Telangiectasia, hereditary hemorrhagic, type 5 Uncertain:1

Nov 19, 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 283 of the GDF2 protein (p.Val283Met). This variant is present in population databases (rs138904328, gnomAD 0.006%). This variant has not been reported in the literature in individuals affected with GDF2-related conditions. ClinVar contains an entry for this variant (Variation ID: 430360). Invitae Evidence Modeling of protein sequence and biophysical properties (such as structural, functional, and spatial information, amino acid conservation, physicochemical variation, residue mobility, and thermodynamic stability) indicates that this missense variant is not expected to disrupt GDF2 protein function with a negative predictive value of 80%. 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. -

not provided Uncertain:1

May 25, 2017

GeneDx

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

A variant of uncertain significance has been identified in the GDF2 gene. The V283M variant has not been published as pathogenic or been reported as benign to our knowledge. This variant has been observed in 7/66686 (90.01%) alleles from individuals of Non-Finnish European ancestry in large population cohorts (Lek et al., 2016; 1000 Genomes Consortium et al., 2015; Exome Variant Server). The V283M variant is a conservative amino acid substitution, which is not likely to impact secondary protein structure as these residues share similar properties. Additionally, this substitution occurs at a position that is not conserved across species and methionine (M) is the wild-type residue at this position in multiple mammalian species. Finally, in silico analysis predicts this variant likely does not alter the protein structure/function. -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.085
BayesDel_noAF	Benign	-0.85
CADD	Benign	0.80
DANN	Benign	0.75
DEOGEN2	Benign	0.33	T
LIST_S2	Benign	0.69	T
MetaRNN	Benign	0.083	T
PhyloP100		-0.80
Sift4G	Benign	0.17	T
Vest4		0.043
gMVP		0.74

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: rs138904328; hg19: chr10-48414021;