Genetic Variant EFEMP2:p.Glu288Lys (chr11-65868407-C-T) – ACMG Classification: Uncertain_significance (3 pts)

Variant summary

Our verdict is Uncertain significance. Variant got 3 ACMG points: 3P and 0B. PM2PP3

The NM_016938.5(EFEMP2):c.862G>A(p.Glu288Lys) variant causes a missense change. The variant allele was found at a frequency of 0.0000116 in 1,461,650 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 (★).

Frequency

Genomes: not found (cov: 32)

Exomes 𝑓: 0.000012 ( 0 hom. )

Consequence

EFEMP2
NM_016938.5 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 6.08

Variant links:

Genes affected

EFEMP2 (HGNC:3219): (EGF containing fibulin extracellular matrix protein 2) A large number of extracellular matrix proteins have been found to contain variations of the epidermal growth factor (EGF) domain and have been implicated in functions as diverse as blood coagulation, activation of complement and determination of cell fate during development. The protein encoded by this gene contains four EGF2 domains and six calcium-binding EGF2 domains. This gene is necessary for elastic fiber formation and connective tissue development. Defects in this gene are cause of an autosomal recessive cutis laxa syndrome. Alternatively spliced transcript variants have been identified for this gene. [provided by RefSeq, Jan 2011]

EFEMP2 links:

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ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 3 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

PP3

MetaRNN computational evidence supports a deleterious effect, 0.818

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
EFEMP2	NM_016938.5 link	c.862G>A	p.Glu288Lys	missense_variant	Exon 9 of 11	ENST00000307998.11	NP_058634.4	O95967A0A024R5G1Q9H3D5
EFEMP2	NR_037718.2 link	n.987G>A		non_coding_transcript_exon_variant	Exon 9 of 12

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
EFEMP2	ENST00000307998.11 link	c.862G>A	p.Glu288Lys	missense_variant	Exon 9 of 11	1	NM_016938.5	ENSP00000309953.6		O95967

Frequencies

GnomAD3 genomes

Cov.:

GnomAD3 exomes

AF:

0.00000398

AC:

AN:

251134

Hom.:

AF XY:

0.00000736

AC XY:

AN XY:

135830

show subpopulations

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 SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00000881

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000116

AC:

AN:

1461650

Hom.:

Cov.:

AF XY:

0.0000138

AC XY:

AN XY:

727130

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.0000135

Gnomad4 OTH exome

AF:

0.0000331

GnomAD4 genome

Cov.:

Alfa

AF:

0.0000468

Hom.:

ExAC

AF:

0.00000824

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

Cardiovascular phenotype

Uncertain:1

Mar 10, 2024

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The p.E288K variant (also known as c.862G>A), located in coding exon 8 of the EFEMP2 gene, results from a G to A substitution at nucleotide position 862. The glutamic acid at codon 288 is replaced by lysine, an amino acid with similar properties. This amino acid position is conserved. In addition, the in silico prediction for this alteration is inconclusive. Based on the available evidence, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.21

BayesDel_addAF

Pathogenic

0.23

BayesDel_noAF

Uncertain

0.10

CADD

Pathogenic

DANN

Pathogenic

1.0

DEOGEN2

Uncertain

0.52

.;D;D

Eigen

Uncertain

0.44

Eigen_PC

Uncertain

0.42

FATHMM_MKL

Uncertain

0.89

LIST_S2

Uncertain

0.94

D;D;D

M_CAP

Pathogenic

0.33

MetaRNN

Pathogenic

0.82

D;D;D

MetaSVM

Uncertain

0.51

MutationAssessor

Uncertain

2.1

.;.;M

PrimateAI

Uncertain

0.75

PROVEAN

Uncertain

-3.2

D;D;D

REVEL

Pathogenic

0.73

Sift

Benign

0.036

D;D;D

Sift4G

Pathogenic

0.0

D;T;T

Polyphen

1.0, 0.99

.;D;D

Vest4

0.61, 0.68

MutPred

0.55

.;Gain of ubiquitination at E288 (P = 0.0128);Gain of ubiquitination at E288 (P = 0.0128);

MVP

0.94

MPC

1.2

ClinPred

0.98

GERP RS

5.0

Varity_R

0.49

gMVP

0.67

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.040

Details are displayed if max score is > 0.2

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

LitVar

Below is the list of publications found by LitVar. It may be empty.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over