chr4-5685372-G-A

Variant names:

• chr4-5685372-G-A
• rs114142742
• NM_147127.5:c.814C>T
• EVC2 p.Arg272Trp

Variant summary

Our verdict is Benign. The variant received -15 ACMG points: 1P and 16B. PP3 BP6_Very_Strong BS1 BS2

The NM_147127.5(EVC2):​c.814C>T​(p.Arg272Trp) variant causes a missense, splice region change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000867 in 1,614,074 control chromosomes in the GnomAD database, including 7 homozygotes. In-silico tool predicts a benign outcome for this variant. 14/23 in silico tools predict a benign outcome for this variant. 2/3 splice prediction tools predicting alterations to normal splicing. Variant has been reported in ClinVar as Benign (★★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. R272Q) has been classified as Likely benign.

• Frequency:
  • Genomes: 𝑓 0.0047 (1 hom., cov: 33)
  • Exomes 𝑓: 0.00047 (6 hom.)
• Consequence: EVC2 NM_147127.5 missense, splice_region
• Scores: Splicing: ADA: 0.9993
• Clinical Significance: Benign criteria provided, multiple submitters, no conflicts B:5
• Conservation: PhyloP100: 1.06
• Publications: 4 publications found

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: Labcorp Genetics (formerly Invitae), Ambry Genetics, Orphanet, G2P
• Ellis-van Creveld syndrome

  Inheritance: AR Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: Orphanet, Labcorp Genetics (formerly Invitae), Ambry Genetics, Myriad Women's Health, Laboratory for Molecular Medicine

ACMG classification

Our verdict: Benign. The variant received -15 ACMG points.

• PP3: Splicing predictors support a deleterious effect. Scorers claiming Pathogenic: dbscSNV1_ADA, dbscSNV1_RF. No scorers claiming Uncertain. Scorers claiming Benign: max_spliceai.
• BP6: Variant 4-5685372-G-A is Benign according to our data. Variant chr4-5685372-G-A is described in ClinVar as Benign. ClinVar VariationId is 349093.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.
• BS1: Variant frequency is greater than expected in population afr. GnomAd4 allele frequency = 0.00472 (719/152340) while in subpopulation AFR AF = 0.0164 (682/41588). AF 95% confidence interval is 0.0154. There are 1 homozygotes in GnomAd4. There are 341 alleles in the male GnomAd4 subpopulation. Median coverage is 33. This position passed quality control check.
• BS2: High Homozygotes in GnomAdExome4 at 6 AR,AD gene

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_147127.5. 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
	EVC2	NM_147127.5	MANE Select	c.814C>T	p.Arg272Trp	missense splice_region	Exon 6 of 22	NP_667338.3
	EVC2	NM_001166136.2		c.574C>T	p.Arg192Trp	missense splice_region	Exon 6 of 22	NP_001159608.1	Q86UK5-2

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	EVC2	ENST00000344408.10	TSL:1 MANE Select	c.814C>T	p.Arg272Trp	missense splice_region	Exon 6 of 22	ENSP00000342144.5	Q86UK5-1
	EVC2	ENST00000310917.6	TSL:1	c.574C>T	p.Arg192Trp	missense splice_region	Exon 6 of 22	ENSP00000311683.2	Q86UK5-2
	EVC2	ENST00000475313.5	TSL:1	n.574C>T		splice_region non_coding_transcript_exon	Exon 6 of 23	ENSP00000431981.1	A0A0C4DGE7

Frequencies

GnomAD3 genomes AF: 0.00473 AC: 720 AN: 152222 Hom.: 1 Cov.: 33

Gnomad AFR AF: 0.0165

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.00163

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: 0.0000147

Gnomad OTH AF: 0.00526

GnomAD2 exomes AF: 0.00122 AC: 308 AN: 251448 AF XY: 0.000905

Gnomad AFR exome AF: 0.0161

Gnomad AMR exome AF: 0.000983

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.0000544

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.0000264

Gnomad OTH exome AF: 0.000326

GnomAD4 exome AF: 0.000465 AC: 680 AN: 1461734 Hom.: 6 Cov.: 31 AF XY: 0.000392 AC XY: 285 AN XY: 727182

African (AFR) AF: 0.0162 AC: 541 AN: 33472

American (AMR) AF: 0.000894 AC: 40 AN: 44724

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26132

East Asian (EAS) AF: 0.0000252 AC: 1 AN: 39700

South Asian (SAS) AF: 0.000116 AC: 10 AN: 86256

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 53400

Middle Eastern (MID) AF: 0.000347 AC: 2 AN: 5768

European-Non Finnish (NFE) AF: 0.0000153 AC: 17 AN: 1111886

Other (OTH) AF: 0.00114 AC: 69 AN: 60396

GnomAD4 genome AF: 0.00472 AC: 719 AN: 152340 Hom.: 1 Cov.: 33 AF XY: 0.00458 AC XY: 341 AN XY: 74490

African (AFR) AF: 0.0164 AC: 682 AN: 41588

American (AMR) AF: 0.00163 AC: 25 AN: 15312

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 3472

East Asian (EAS) AF: 0.00 AC: 0 AN: 5172

South Asian (SAS) AF: 0.00 AC: 0 AN: 4828

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 10624

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 294

European-Non Finnish (NFE) AF: 0.0000147 AC: 1 AN: 68024

Other (OTH) AF: 0.00520 AC: 11 AN: 2114

Alfa AF: 0.00182 Hom.: 3

Bravo AF: 0.00510

Asia WGS AF: 0.000289 AC: 1 AN: 3478

EpiCase AF: 0.0000545

EpiControl AF: 0.000119

ClinVar

ClinVar submissions

Significance: Benign

Revision: criteria provided, multiple submitters, no conflicts

Pathogenic	VUS	Benign	Condition
-	-	2	not provided (2)
-	-	1	Ellis-van Creveld syndrome (1)
-	-	1	Ellis-van Creveld syndrome;C0457013:Curry-Hall syndrome (1)
-	-	1	not specified (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.084
BayesDel_addAF	Benign	-0.46	T
BayesDel_noAF	Benign	-0.42
CADD	Benign	23
DANN	Uncertain	1.0
DEOGEN2	Benign	0.26	T
Eigen	Benign	-0.15
Eigen_PC	Benign	-0.29
FATHMM_MKL	Benign	0.075	N
LIST_S2	Benign	0.81	T
MetaRNN	Benign	0.0094	T
MetaSVM	Benign	-0.65	T
MutationAssessor	Benign	0.69	N
PhyloP100		1.1
PrimateAI	Benign	0.21	T
PROVEAN	Uncertain	-2.6	D
REVEL	Benign	0.24
Sift	Uncertain	0.013	D
Sift4G	Uncertain	0.036	D
Varity_R		0.11
gMVP		0.51
Mutation Taster		=99/1	polymorphism

Splicing

Name	Calibrated prediction	Score	Prediction
dbscSNV1_ADA	Pathogenic	1.0
dbscSNV1_RF	Pathogenic	0.94
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

MaxEntScan Visualizer can be used to analyze the impact of this mutation on the neighboring sequence.

Other links and lift over

dbSNP: rs114142742;

hg19: chr4-5687099;

COSMIC: COSV60394222;