Genetic Variant DVL1:p.Arg677Leu (chr1-1336200-C-A) – ACMG Classification: Likely_benign (-2 pts)

Variant summary

Our verdict is Likely benign. The variant received -2 ACMG points: 2P and 4B. PP3_ModerateBS2

The NM_001330311.2(DVL1):c.2030G>T(p.Arg677Leu) variant causes a missense change. The variant allele was found at a frequency of 0.0000109 in 1,564,500 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic 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. R677H) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.000013 ( 0 hom., cov: 34)

Exomes 𝑓: 0.000011 ( 0 hom. )

Consequence

DVL1
NM_001330311.2 missense

Scores

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: 4.54

Publications

0 publications found

Variant links:

Genes affected

DVL1 (HGNC:3084): (dishevelled segment polarity protein 1) DVL1, the human homolog of the Drosophila dishevelled gene (dsh) encodes a cytoplasmic phosphoprotein that regulates cell proliferation, acting as a transducer molecule for developmental processes, including segmentation and neuroblast specification. DVL1 is a candidate gene for neuroblastomatous transformation. The Schwartz-Jampel syndrome and Charcot-Marie-Tooth disease type 2A have been mapped to the same region as DVL1. The phenotypes of these diseases may be consistent with defects which might be expected from aberrant expression of a DVL gene during development. [provided by RefSeq, Jul 2008]

DVL1 Gene-Disease associations (from GenCC):

autosomal dominant Robinow syndrome 2
Inheritance: AD Classification: DEFINITIVE, STRONG Submitted by: Labcorp Genetics (formerly Invitae), G2P
autosomal dominant Robinow syndrome
Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet

DVL1 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Likely_benign. The variant received -2 ACMG points.

PP3

MetaRNN computational evidence supports a deleterious effect, 0.842

BS2

High AC in GnomAdExome4 at 15 AD gene.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_001330311.2. 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
	DVL1	NM_001330311.2	MANE Select	c.2030G>T	p.Arg677Leu	missense	Exon 15 of 15	NP_001317240.1	O14640-1
	DVL1	NM_004421.3		c.1955G>T	p.Arg652Leu	missense	Exon 15 of 15	NP_004412.2

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
DVL1	ENST00000378888.10	TSL:5 MANE Select	c.2030G>T	p.Arg677Leu	missense	Exon 15 of 15	ENSP00000368166.5	O14640-1
DVL1	ENST00000378891.9	TSL:1	c.1955G>T	p.Arg652Leu	missense	Exon 15 of 15	ENSP00000368169.5	O14640-2
DVL1	ENST00000874577.1		c.2195G>T	p.Arg732Leu	missense	Exon 15 of 15	ENSP00000544636.1

Frequencies

GnomAD3 genomes

AF:

0.0000131

AC:

AN:

152210

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

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:

0.0000294

Gnomad OTH

AF:

0.00

GnomAD2 exomes

AF:

0.0000180

AC:

AN:

166318

AF XY:

0.0000328

show subpopulations

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:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000106

AC:

AN:

1412290

Hom.:

Cov.:

AF XY:

0.0000143

AC XY:

AN XY:

699540

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

32814

American (AMR)

AF:

0.00

AC:

AN:

39394

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

25494

East Asian (EAS)

AF:

0.00

AC:

AN:

37820

South Asian (SAS)

AF:

0.000122

AC:

AN:

81848

European-Finnish (FIN)

AF:

0.00

AC:

AN:

37842

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5722

European-Non Finnish (NFE)

AF:

0.00000458

AC:

AN:

1092526

Other (OTH)

AF:

0.00

AC:

AN:

58830

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.445

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

GnomAD4 genome

AF:

0.0000131

AC:

AN:

152210

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

74352

show subpopulations

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

African (AFR)

AF:

0.00

AC:

AN:

41456

American (AMR)

AF:

0.00

AC:

AN:

15290

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3472

East Asian (EAS)

AF:

0.00

AC:

AN:

5188

South Asian (SAS)

AF:

0.00

AC:

AN:

4836

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10626

Middle Eastern (MID)

AF:

0.00

AC:

AN:

316

European-Non Finnish (NFE)

AF:

0.0000294

AC:

AN:

68022

Other (OTH)

AF:

0.00

AC:

AN:

2092

⚠️ The allele balance in gnomAD version 4 Genomes is significantly skewed from the expected value of 0.5. (p-value = 0.00000000770867), which strongly suggests a high chance of mosaicism in these individuals.

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.400

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Alfa

AF:

0.00

Hom.:

Bravo

AF:

0.0000189

ExAC

AF:

0.0000345

AC:

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Pathogenic

0.94

BayesDel_addAF

Benign

-0.14

BayesDel_noAF

Benign

-0.21

CADD

Pathogenic

(source)

DANN

Uncertain

1.0

DEOGEN2

Pathogenic

0.82

Eigen

Pathogenic

0.75

Eigen_PC

Pathogenic

0.68

FATHMM_MKL

Pathogenic

0.99

LIST_S2

Pathogenic

1.0

M_CAP

Benign

0.075

MetaRNN

Pathogenic

0.84

MetaSVM

Benign

-0.90

MutationAssessor

Uncertain

2.5

PhyloP100

4.5

PrimateAI

Pathogenic

0.90

PROVEAN

Pathogenic

-5.5

REVEL

Uncertain

0.36

Sift

Uncertain

0.0010

Sift4G

Uncertain

0.0040

Polyphen

1.0

Vest4

0.80

MutPred

0.61

Loss of catalytic residue at R677 (P = 0.0376)

MVP

0.89

MPC

0.10

ClinPred

0.96

GERP RS

4.5

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.9

Varity_R

0.71

gMVP

0.75

Mutation Taster

=54/46

polymorphism

(source)

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.010

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

Age Distribution

ClinVar

Computational scores

Splicing

Publications

Other links and lift over