chr20-35434282-C-A

Variant names:

Variant summary

Our verdict is Likely pathogenic. The variant received 6 ACMG points: 6P and 0B. PM1PM2PM5

The NM_000557.5(GDF5):c.1133G>T(p.Arg378Leu) variant causes a missense change. The variant allele was found at a frequency of 0.000000684 in 1,461,858 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. R378Q) has been classified as Pathogenic.

Frequency

Genomes: not found (cov: 32)

Exomes 𝑓: 6.8e-7 ( 0 hom. )

Consequence

GDF5
NM_000557.5 missense

Scores

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: 6.16

Publications

9 publications found

Variant links:

Genes affected

GDF5 (HGNC:4220): (growth differentiation factor 5) 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 the development of numerous tissue and cell types, including cartilage, joints, brown fat, teeth, and the growth of neuronal axons and dendrites. Mutations in this gene are associated with acromesomelic dysplasia, brachydactyly, chondrodysplasia, multiple synostoses syndrome, proximal symphalangism, and susceptibility to osteoarthritis. [provided by RefSeq, Aug 2016]

GDF5 links:

GDF5-AS1 (HGNC:33435): (GDF5 antisense RNA 1) Predicted to be located in mitochondrion. [provided by Alliance of Genome Resources, Apr 2022]

GDF5-AS1 links:

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ACMG classification

Classification was made for transcript

Our verdict: Likely_pathogenic. The variant received 6 ACMG points.

PM1

In a hotspot region, there are 2 aminoacids with missense pathogenic changes in the window of +-8 aminoacids around while only 1 benign, 9 uncertain in NM_000557.5

PM2

Very rare variant in population databases, with high coverage;

PM5

Other missense variant is known to change same aminoacid residue: Variant chr20-35434282-C-T is described in ClinVar as Pathogenic. ClinVar VariationId is 8393.Status of the report is no_assertion_criteria_provided, 0 stars.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_000557.5. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
GDF5	NM_000557.5	MANE Select	c.1133G>T	p.Arg378Leu	missense	Exon 2 of 2	NP_000548.2	P43026
GDF5	NM_001319138.2		c.1133G>T	p.Arg378Leu	missense	Exon 4 of 4	NP_001306067.1	P43026
GDF5-AS1	NR_161326.1		n.566C>A		non_coding_transcript_exon	Exon 2 of 2

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
GDF5	ENST00000374369.8	TSL:1 MANE Select	c.1133G>T	p.Arg378Leu	missense	Exon 2 of 2	ENSP00000363489.3	P43026
GDF5	ENST00000374372.1	TSL:1	c.1133G>T	p.Arg378Leu	missense	Exon 4 of 4	ENSP00000363492.1	P43026
GDF5	ENST00000968510.1		c.1133G>T	p.Arg378Leu	missense	Exon 3 of 3	ENSP00000638569.1

Frequencies

GnomAD3 genomes

Cov.:

GnomAD2 exomes

AF:

0.00000399

AC:

AN:

250524

AF XY:

0.00

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.0000996

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

6.84e-7

AC:

AN:

1461858

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

727228

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

33480

American (AMR)

AF:

0.00

AC:

AN:

44724

Ashkenazi Jewish (ASJ)

AF:

0.0000383

AC:

AN:

26136

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:

53388

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5766

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

1112010

Other (OTH)

AF:

0.00

AC:

AN:

60396

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.475

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

GnomAD4 genome

Cov.:

Alfa

AF:

0.0000466

Hom.:

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Pathogenic

0.95

BayesDel_addAF

Pathogenic

0.20

BayesDel_noAF

Uncertain

0.040

CADD

Pathogenic

(source)

DANN

Uncertain

1.0

DEOGEN2

Benign

0.39

Eigen

Uncertain

0.29

Eigen_PC

Uncertain

0.35

FATHMM_MKL

Pathogenic

0.99

LIST_S2

Uncertain

0.91

M_CAP

Benign

0.057

MetaRNN

Uncertain

0.68

MetaSVM

Benign

-0.58

PhyloP100

6.2

PrimateAI

Pathogenic

0.82

PROVEAN

Pathogenic

-6.4

REVEL

Pathogenic

0.74

Sift

Uncertain

0.0010

Sift4G

Uncertain

0.0030

Polyphen

0.98

Vest4

0.58

MutPred

0.57

Loss of MoRF binding (P = 0.0573)

MVP

0.75

MPC

1.7

ClinPred

0.99

GERP RS

4.3

gMVP

0.81

Mutation Taster

=18/82

disease causing

(source)

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

Publications

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Variant Effect in Transcripts

RefSeq Transcripts

Ensembl Transcripts

Frequencies

ClinVar

Computational scores

Splicing

Publications

Other links and lift over