4-5562856-T-A

Variant names:

• chr4-5562856-T-A
• rs200844130
• NM_147127.5:c.3919A>T

Variant summary

Our verdict is Likely benign. The variant received -2 ACMG points: 2P and 4B. PM2 BP4_Strong

The NM_147127.5(EVC2):​c.3919A>T​(p.Met1307Leu) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000137 in 1,461,662 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 17/22 in silico tools predict a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another nucleotide change resulting in the same amino acid substitution has been previously reported as Uncertain significance in ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. M1307I) has been classified as Uncertain significance.

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 0.0000014 (0 hom.)
• Consequence: EVC2 NM_147127.5 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: -0.974
• 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: Ambry Genetics, G2P, Orphanet, Labcorp Genetics (formerly Invitae)
• Ellis-van Creveld syndrome

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

ACMG classification

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

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.0317159).

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.3919A>T	p.Met1307Leu	missense	Exon 22 of 22	NP_667338.3
	EVC2	NM_001166136.2		c.3679A>T	p.Met1227Leu	missense	Exon 22 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.3919A>T	p.Met1307Leu	missense	Exon 22 of 22	ENSP00000342144.5	Q86UK5-1
	EVC2	ENST00000310917.6	TSL:1	c.3679A>T	p.Met1227Leu	missense	Exon 22 of 22	ENSP00000311683.2	Q86UK5-2
	EVC2	ENST00000509670.1	TSL:1	n.*2312A>T		non_coding_transcript_exon	Exon 23 of 23	ENSP00000423876.1	E9PFT2

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD2 exomes AF: 0.00000398 AC: 1 AN: 251376 AF XY: 0.00000736

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: 0.00000879

Gnomad OTH exome AF: 0.00

GnomAD4 exome AF: 0.00000137 AC: 2 AN: 1461662 Hom.: 0 Cov.: 32 AF XY: 0.00000138 AC XY: 1 AN XY: 727126

African (AFR) AF: 0.00 AC: 0 AN: 33474

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: 86250

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 53378

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5624

European-Non Finnish (NFE) AF: 0.00000180 AC: 2 AN: 1112012

Other (OTH) AF: 0.00 AC: 0 AN: 60364

GnomAD4 genome Cov.: 32

Alfa AF: 0.0000225 Hom.: 0

ExAC AF: 0.00000824 AC: 1

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.089
BayesDel_addAF	Benign	-0.21	T
BayesDel_noAF	Benign	-0.54
CADD	Benign	0.069
DANN	Benign	0.43
DEOGEN2	Benign	0.020	T
Eigen	Benign	-1.6
Eigen_PC	Benign	-1.7
FATHMM_MKL	Benign	0.019	N
LIST_S2	Benign	0.32	T
M_CAP	Benign	0.0022	T
MetaRNN	Benign	0.032	T
MetaSVM	Benign	-0.99	T
MutationAssessor	Benign	-1.1	N
PhyloP100		-0.97
PrimateAI	Benign	0.37	T
PROVEAN	Benign	-0.31	N
REVEL	Benign	0.12
Sift	Benign	1.0	T
Sift4G	Benign	1.0	T
Polyphen		0.0	B
Vest4		0.095
MutPred		0.21		Loss of loop (P = 0.1258)
MVP		0.46
MPC		0.020
ClinPred		0.024	T
GERP RS		-9.5
Varity_R		0.050
gMVP		0.086
Mutation Taster		=100/0	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

Other links and lift over

dbSNP: rs200844130; hg19: chr4-5564583;