4-5622803-T-G

Variant names:

• chr4-5622803-T-G
• rs60121553
• NM_147127.5:c.2235A>C
• EVC2 p.Glu745Asp

Variant summary

Our verdict is Uncertain significance. The variant received 1 ACMG points: 2P and 1B. PM2 BP4

The NM_147127.5(EVC2):​c.2235A>C​(p.Glu745Asp) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000205 in 1,461,882 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. Synonymous variant affecting the same amino acid position (i.e. E745E) has been classified as Benign.

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 0.0000021 (0 hom.)
• Consequence: EVC2 NM_147127.5 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 2.17
• Publications: 0 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: Uncertain_significance. The variant received 1 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.30504954).

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.2235A>C	p.Glu745Asp	missense	Exon 14 of 22	NP_667338.3
	EVC2	NM_001166136.2		c.1995A>C	p.Glu665Asp	missense	Exon 14 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.2235A>C	p.Glu745Asp	missense	Exon 14 of 22	ENSP00000342144.5	Q86UK5-1
	EVC2	ENST00000310917.6	TSL:1	c.1995A>C	p.Glu665Asp	missense	Exon 14 of 22	ENSP00000311683.2	Q86UK5-2
	EVC2	ENST00000475313.5	TSL:1	n.1995A>C		non_coding_transcript_exon	Exon 14 of 23	ENSP00000431981.1	A0A0C4DGE7

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome AF: 0.00000205 AC: 3 AN: 1461882 Hom.: 0 Cov.: 32 AF XY: 0.00000413 AC XY: 3 AN XY: 727244

African (AFR) AF: 0.00 AC: 0 AN: 33480

American (AMR) AF: 0.00 AC: 0 AN: 44724

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26136

East Asian (EAS) AF: 0.00 AC: 0 AN: 39700

South Asian (SAS) AF: 0.00 AC: 0 AN: 86258

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 53410

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5768

European-Non Finnish (NFE) AF: 0.00000270 AC: 3 AN: 1112010

Other (OTH) AF: 0.00 AC: 0 AN: 60396

GnomAD4 genome Cov.: 32

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.20
BayesDel_addAF	Benign	-0.0077	T
BayesDel_noAF	Benign	-0.25
CADD	Benign	23
DANN	Uncertain	1.0
DEOGEN2	Benign	0.087	T
Eigen	Benign	0.0089
Eigen_PC	Benign	-0.054
FATHMM_MKL	Benign	0.68	D
LIST_S2	Benign	0.58	T
M_CAP	Benign	0.048	D
MetaRNN	Benign	0.31	T
MetaSVM	Uncertain	-0.14	T
MutationAssessor	Uncertain	2.6	M
PhyloP100		2.2
PrimateAI	Uncertain	0.53	T
PROVEAN	Benign	-1.8	N
REVEL	Uncertain	0.29
Sift	Benign	0.031	D
Sift4G	Uncertain	0.036	D
Varity_R		0.16
gMVP		0.19
Mutation Taster		=87/13	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

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

Other links and lift over

dbSNP: rs60121553;

hg19: chr4-5624530;