dbSNP rs201573606: DDR2:p.Thr170Ala (chr1-162755246-A-G) – ACMG Classification: Uncertain_significance (2 pts)

Variant summary

Our verdict is Uncertain significance. The variant received 2 ACMG points: 3P and 1B. PM2PP2BP4

The NM_006182.4(DDR2):c.508A>G(p.Thr170Ala) variant causes a missense change. The variant allele was found at a frequency of 0.000000684 in 1,461,790 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts 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. T170S) has been classified as Likely benign.

Frequency

Genomes: not found (cov: 32)

Exomes 𝑓: 6.8e-7 ( 0 hom. )

Consequence

DDR2
NM_006182.4 missense

Scores

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: 6.96

Publications

0 publications found

Variant links:

Genes affected

DDR2 (HGNC:2731): (discoidin domain receptor tyrosine kinase 2) This gene encodes a member of the discoidin domain receptor subclass of the receptor tyrosine kinase (RTKs) protein family. RTKs play a key role in the communication of cells with their microenvironment. The encoded protein is a collagen-induced receptor that activates signal transduction pathways involved in cell adhesion, proliferation, and extracellular matrix remodeling. This protein is expressed in numerous cell types and may alos be involved in wound repair and regulate tumor growth and invasiveness. Mutations in this gene are the cause of short limb-hand type spondylometaepiphyseal dysplasia. [provided by RefSeq, Aug 2017]

DDR2 Gene-Disease associations (from GenCC):

spondyloepimetaphyseal dysplasia-short limb-abnormal calcification syndrome
Inheritance: AR Classification: DEFINITIVE, STRONG, MODERATE, SUPPORTIVE Submitted by: Ambry Genetics, ClinGen, Labcorp Genetics (formerly Invitae), G2P, Orphanet
warburg-cinotti syndrome
Inheritance: Unknown, AD Classification: STRONG, MODERATE, LIMITED Submitted by: Labcorp Genetics (formerly Invitae), ClinGen, G2P, Illumina, Ambry Genetics

DDR2 links:

Genome browser will be placed here

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;

PP2

Missense variant in the DDR2 gene, where missense mutations are typically associated with disease (based on misZ statistic). The gene has 12 curated pathogenic missense variants (we use a threshold of 10). The gene has 3 curated benign missense variants. Gene score misZ: 2.2869 (below the threshold of 3.09). Trascript score misZ: 3.8204 (above the threshold of 3.09). GenCC associations: The gene is linked to warburg-cinotti syndrome, spondyloepimetaphyseal dysplasia-short limb-abnormal calcification syndrome.

BP4

Computational evidence support a benign effect (MetaRNN=0.30850863).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
DDR2	NM_006182.4 link	c.508A>G	p.Thr170Ala	missense_variant	Exon 6 of 18	ENST00000367921.8	NP_006173.2	Q16832A0A024R906

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
DDR2	ENST00000367921.8 link	c.508A>G	p.Thr170Ala	missense_variant	Exon 6 of 18	1	NM_006182.4	ENSP00000356898.3		Q16832

Frequencies

GnomAD3 genomes

Cov.:

GnomAD4 exome

AF:

6.84e-7

AC:

AN:

1461790

Hom.:

Cov.:

AF XY:

0.00000138

AC XY:

AN XY:

727206

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

33470

American (AMR)

AF:

0.00

AC:

AN:

44722

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26134

East Asian (EAS)

AF:

0.00

AC:

AN:

39700

South Asian (SAS)

AF:

0.0000116

AC:

AN:

86256

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53420

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5704

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

1111992

Other (OTH)

AF:

0.00

AC:

AN:

60392

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.:

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.087

BayesDel_addAF

Benign

0.011

BayesDel_noAF

Benign

-0.22

CADD

Uncertain

(source)

DANN

Uncertain

0.99

DEOGEN2

Uncertain

0.67

D;D;D

Eigen

Benign

0.14

Eigen_PC

Uncertain

0.33

FATHMM_MKL

Pathogenic

0.98

LIST_S2

Benign

0.79

.;.;T

M_CAP

Benign

0.0070

MetaRNN

Benign

0.31

T;T;T

MetaSVM

Benign

-1.0

MutationAssessor

Benign

0.69

N;N;N

PhyloP100

7.0

PrimateAI

Uncertain

0.65

PROVEAN

Benign

-1.1

.;N;N

REVEL

Benign

0.11

Sift

Benign

0.74

.;T;T

Sift4G

Benign

0.43

.;T;T

Polyphen

0.31

B;B;B

Vest4

0.49, 0.49

MutPred

0.60

Gain of methylation at R165 (P = 0.2896);Gain of methylation at R165 (P = 0.2896);Gain of methylation at R165 (P = 0.2896);

MVP

0.75

MPC

1.1

ClinPred

0.83

GERP RS

5.9

Varity_R

0.30

gMVP

0.67

Mutation Taster

=55/45

polymorphism

(source)

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.040

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

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Computational scores

Splicing

Publications

Other links and lift over