rs201083070

Variant summary

Our verdict is Uncertain significance. The variant received 3 ACMG points: 3P and 0B. PM2PP3

The NM_147127.5(EVC2):​c.887G>T​(p.Gly296Val) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000342 in 1,461,862 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. G296A) has been classified as Likely benign.

Frequency

Genomes: not found (cov: 32)
Exomes 𝑓: 0.0000034 ( 0 hom. )

Consequence

EVC2
NM_147127.5 missense

Scores

2
9
8

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 1.56

Publications

0 publications found
Variant links:
Genes affected
EVC2 (HGNC:19747): (EvC ciliary complex subunit 2) This gene encodes a protein that functions in bone formation and skeletal development. Mutations in this gene, as well as in a neighboring gene that lies in a head-to-head configuration, cause Ellis-van Creveld syndrome, an autosomal recessive skeletal dysplasia that is also known as chondroectodermal dysplasia. Mutations in this gene also cause acrofacial dysostosis Weyers type, also referred to as Curry-Hall syndrome, a disease that combines limb and facial abnormalities. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Oct 2009]
EVC2 Gene-Disease associations (from GenCC):
  • acrofacial dysostosis, Weyers type
    Inheritance: AD, AR Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: Ambry Genetics, Labcorp Genetics (formerly Invitae), G2P, Orphanet
  • Ellis-van Creveld syndrome
    Inheritance: AR Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: Myriad Women’s Health, Labcorp Genetics (formerly Invitae), Orphanet, Ambry Genetics, Laboratory for Molecular Medicine

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 3 ACMG points.

PM2
Very rare variant in population databases, with high coverage;
PP3
MetaRNN computational evidence supports a deleterious effect, 0.792

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect Exon rank MANE Protein UniProt
EVC2NM_147127.5 linkc.887G>T p.Gly296Val missense_variant Exon 8 of 22 ENST00000344408.10 NP_667338.3

Ensembl

Gene Transcript HGVSc HGVSp Effect Exon rank TSL MANE Protein Appris UniProt
EVC2ENST00000344408.10 linkc.887G>T p.Gly296Val missense_variant Exon 8 of 22 1 NM_147127.5 ENSP00000342144.5
EVC2ENST00000310917.6 linkc.647G>T p.Gly216Val missense_variant Exon 8 of 22 1 ENSP00000311683.2
EVC2ENST00000475313.5 linkn.647G>T non_coding_transcript_exon_variant Exon 8 of 23 1 ENSP00000431981.1
EVC2ENST00000509670.1 linkn.647G>T non_coding_transcript_exon_variant Exon 9 of 23 1 ENSP00000423876.1

Frequencies

GnomAD3 genomes
Cov.:
32
GnomAD2 exomes
AF:
0.0000199
AC:
5
AN:
251288
AF XY:
0.0000295
show subpopulations
Gnomad AFR exome
AF:
0.00
Gnomad AMR exome
AF:
0.000145
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:
0.00000342
AC:
5
AN:
1461862
Hom.:
0
Cov.:
32
AF XY:
0.00000550
AC XY:
4
AN XY:
727232
show subpopulations
African (AFR)
AF:
0.00
AC:
0
AN:
33480
American (AMR)
AF:
0.000112
AC:
5
AN:
44722
Ashkenazi Jewish (ASJ)
AF:
0.00
AC:
0
AN:
26134
East Asian (EAS)
AF:
0.00
AC:
0
AN:
39696
South Asian (SAS)
AF:
0.00
AC:
0
AN:
86248
European-Finnish (FIN)
AF:
0.00
AC:
0
AN:
53420
Middle Eastern (MID)
AF:
0.00
AC:
0
AN:
5768
European-Non Finnish (NFE)
AF:
0.00
AC:
0
AN:
1112002
Other (OTH)
AF:
0.00
AC:
0
AN:
60392
Allele Balance Distribution
Red line indicates average allele balance
Average allele balance: 0.495
Heterozygous variant carriers
0
1
2
2
3
4
0.00
0.20
0.40
0.60
0.80
0.95
Allele balance

Age Distribution

Exome Het
Variant carriers
0
2
4
6
8
10
<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.:
32
Alfa
AF:
0.00
Hom.:
0
Bravo
AF:
0.0000113
ExAC
AF:
0.0000165
AC:
2

ClinVar

Significance: Uncertain significance
Submissions summary: Uncertain:1
Revision: criteria provided, single submitter
LINK: link

Submissions by phenotype

Ellis-van Creveld syndrome;C0457013:Curry-Hall syndrome Uncertain:1
Jul 01, 2024
Labcorp Genetics (formerly Invitae), Labcorp
Significance:Uncertain significance
Review Status:criteria provided, single submitter
Collection Method:clinical testing

This sequence change replaces glycine, which is neutral and non-polar, with valine, which is neutral and non-polar, at codon 296 of the EVC2 protein (p.Gly296Val). This variant is present in population databases (rs201083070, gnomAD 0.01%). This variant has not been reported in the literature in individuals affected with EVC2-related conditions. ClinVar contains an entry for this variant (Variation ID: 2069470). An algorithm developed to predict the effect of missense changes on protein structure and function (PolyPhen-2) suggests that this variant is likely to be disruptive. 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. -

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
AlphaMissense
Benign
0.26
BayesDel_addAF
Uncertain
0.10
D
BayesDel_noAF
Pathogenic
0.17
CADD
Benign
22
DANN
Uncertain
0.99
DEOGEN2
Uncertain
0.70
D;.
Eigen
Benign
0.18
Eigen_PC
Benign
0.015
FATHMM_MKL
Benign
0.44
N
LIST_S2
Benign
0.78
T;T
M_CAP
Benign
0.082
D
MetaRNN
Pathogenic
0.79
D;D
MetaSVM
Uncertain
0.20
D
MutationAssessor
Uncertain
2.5
M;.
PhyloP100
1.6
PrimateAI
Benign
0.41
T
PROVEAN
Uncertain
-4.0
D;D
REVEL
Uncertain
0.44
Sift
Uncertain
0.0050
D;D
Sift4G
Uncertain
0.012
D;D
Polyphen
1.0
D;.
Vest4
0.80
MutPred
0.33
Loss of loop (P = 0.1242);.;
MVP
0.85
MPC
0.18
ClinPred
0.89
D
GERP RS
5.3
Varity_R
0.53
gMVP
0.72
Mutation Taster
=82/18
polymorphism

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

Other links and lift over

dbSNP: rs201083070; hg19: chr4-5667360; API