Genetic Variant VANGL1:p.Arg274Leu (chr1-115682372-G-T) – ACMG Classification: Likely_pathogenic (8 pts)

Variant summary

Our verdict is Likely pathogenic. The variant received 8 ACMG points: 8P and 0B. PM2PM5PP3_Strong

The NM_138959.3(VANGL1):c.821G>T(p.Arg274Leu) variant causes a missense change. The variant allele was found at a frequency of 0.000000684 in 1,461,826 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. R274Q) has been classified as Likely pathogenic.

Frequency

Genomes: not found (cov: 33)

Exomes 𝑓: 6.8e-7 ( 0 hom. )

Consequence

VANGL1
NM_138959.3 missense

Scores

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: 6.44

Publications

0 publications found

Variant links:

Genes affected

VANGL1 (HGNC:15512): (VANGL planar cell polarity protein 1) This gene encodes a member of the tretraspanin family. The encoded protein may be involved in mediating intestinal trefoil factor induced wound healing in the intestinal mucosa. Mutations in this gene are associated with neural tube defects. Alternate splicing results in multiple transcript variants. [provided by RefSeq, Feb 2010]

VANGL1 Gene-Disease associations (from GenCC):

neural tube defects, susceptibility to
Inheritance: AD Classification: LIMITED Submitted by: G2P

VANGL1 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Likely_pathogenic. The variant received 8 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

PM5

Other missense variant is known to change same aminoacid residue: Variant chr1-115682372-G-A is described in ClinVar as Likely_pathogenic. ClinVar VariationId is 1347.Status of the report is criteria_provided_single_submitter, 1 stars.

PP3

MetaRNN computational evidence supports a deleterious effect, 0.964

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
VANGL1	NM_138959.3 link	c.821G>T	p.Arg274Leu	missense_variant	Exon 5 of 8	ENST00000355485.7	NP_620409.1	Q8TAA9-1A0A024R0E3
VANGL1	NM_001172412.2 link	c.821G>T	p.Arg274Leu	missense_variant	Exon 5 of 8		NP_001165883.1	Q8TAA9-1A0A024R0E3
VANGL1	NM_001172411.2 link	c.815G>T	p.Arg272Leu	missense_variant	Exon 5 of 8		NP_001165882.1	Q8TAA9-2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
VANGL1	ENST00000355485.7 link	c.821G>T	p.Arg274Leu	missense_variant	Exon 5 of 8	1	NM_138959.3	ENSP00000347672.2		Q8TAA9-1

Frequencies

GnomAD3 genomes

Cov.:

GnomAD4 exome

AF:

6.84e-7

AC:

AN:

1461826

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

727210

show subpopulations

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

African (AFR)

AF:

0.00

AC:

AN:

33480

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:

39698

South Asian (SAS)

AF:

0.00

AC:

AN:

86250

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53370

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5768

European-Non Finnish (NFE)

AF:

8.99e-7

AC:

AN:

1112008

Other (OTH)

AF:

0.00

AC:

AN:

60396

⚠️ 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.

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.375

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

Cov.:

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Uncertain

0.48

BayesDel_addAF

Pathogenic

0.42

BayesDel_noAF

Pathogenic

0.37

CADD

Pathogenic

(source)

DANN

Uncertain

1.0

DEOGEN2

Uncertain

0.66

D;.;D;D

Eigen

Pathogenic

0.82

Eigen_PC

Pathogenic

0.82

FATHMM_MKL

Pathogenic

0.99

LIST_S2

Uncertain

0.96

D;D;.;.

M_CAP

Uncertain

0.15

MetaRNN

Pathogenic

0.96

D;D;D;D

MetaSVM

Uncertain

0.43

MutationAssessor

Uncertain

2.4

M;.;M;M

PhyloP100

6.4

PrimateAI

Uncertain

0.73

PROVEAN

Pathogenic

-6.7

D;D;D;D

REVEL

Pathogenic

0.85

Sift

Uncertain

0.0010

D;D;D;D

Sift4G

Uncertain

0.0080

D;D;D;D

Polyphen

0.96

P;P;P;P

Vest4

0.89

MutPred

0.86

Gain of stability (P = 0.2008);.;Gain of stability (P = 0.2008);Gain of stability (P = 0.2008);

MVP

0.93

MPC

0.54

ClinPred

1.0

GERP RS

5.7

Varity_R

0.63

gMVP

0.71

Mutation Taster

=32/68

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

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

ClinVar

Computational scores

Splicing

Publications

Other links and lift over