rs193302867

Variant names:

Your query was ambiguous. Multiple possible variants found:

Variant summary

Our verdict is Pathogenic. The variant received 10 ACMG points: 10P and 0B. PM1PM2PM5PP3_Strong

The NM_016938.5(EFEMP2):c.376G>C(p.Glu126Gln) variant causes a missense change. The variant allele was found at a frequency of 0.000000684 in 1,461,740 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. E126V) has been classified as Pathogenic.

Frequency

Genomes: not found (cov: 33)

Exomes 𝑓: 6.8e-7 ( 0 hom. )

Consequence

EFEMP2
NM_016938.5 missense

Scores

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: 3.91

Publications

13 publications found

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 Gene-Disease associations (from GenCC):

cutis laxa, autosomal recessive, type 1B
Inheritance: AR Classification: DEFINITIVE, STRONG Submitted by: Labcorp Genetics (formerly Invitae), Genomics England PanelApp, G2P, PanelApp Australia, Ambry Genetics
familial thoracic aortic aneurysm and aortic dissection
Inheritance: AR Classification: MODERATE Submitted by: ClinGen
autosomal recessive cutis laxa type 1
Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet
lethal arteriopathy syndrome due to fibulin-4 deficiency
Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet
thoracic aortic aneurysm
Inheritance: AD Classification: LIMITED Submitted by: Ambry Genetics

EFEMP2 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Pathogenic. The variant received 10 ACMG points.

PM1

In a domain EGF-like 2; calcium-binding (size 40) in uniprot entity FBLN4_HUMAN there are 6 pathogenic changes around while only 1 benign (86%) in NM_016938.5

PM2

Very rare variant in population databases, with high coverage;

PM5

Other missense variant is known to change same aminoacid residue: Variant chr11-65870649-T-A is described in ClinVar as Pathogenic. ClinVar VariationId is 39012.Status of the report is no_assertion_criteria_provided, 0 stars.

PP3

MetaRNN computational evidence supports a deleterious effect, 0.969

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
EFEMP2	NM_016938.5 link	c.376G>C	p.Glu126Gln	missense_variant	Exon 5 of 11	ENST00000307998.11	NP_058634.4	O95967A0A024R5G1Q9H3D5
EFEMP2	NR_037718.2 link	n.501G>C		non_coding_transcript_exon_variant	Exon 5 of 12

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
EFEMP2	ENST00000307998.11 link	c.376G>C	p.Glu126Gln	missense_variant	Exon 5 of 11	1	NM_016938.5	ENSP00000309953.6		O95967

Frequencies

GnomAD3 genomes

Cov.:

GnomAD2 exomes

AF:

0.00000399

AC:

AN:

250772

AF XY:

0.00000737

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 FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00000883

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

6.84e-7

AC:

AN:

1461740

Hom.:

Cov.:

AF XY:

0.00000138

AC XY:

AN XY:

727186

show subpopulations

⚠️ The allele balance in gnomAD version 4 Exomes is significantly skewed from the expected value of 0.5.

African (AFR)

AF:

0.00

AC:

AN:

33480

American (AMR)

AF:

0.00

AC:

AN:

44722

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26132

East Asian (EAS)

AF:

0.00

AC:

AN:

39700

South Asian (SAS)

AF:

0.00

AC:

AN:

86240

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53308

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5768

European-Non Finnish (NFE)

AF:

8.99e-7

AC:

AN:

1112000

Other (OTH)

AF:

0.00

AC:

AN:

60390

⚠️ The allele balance in gnomAD4 Exomes is highly skewed from 0.5 (p-value = 0.000000), which strongly suggests a high chance of mosaicism in these individuals.

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.325

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

GnomAD4 genome

Cov.:

ExAC

AF:

0.00000824

AC:

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Pathogenic

0.95

BayesDel_addAF

Pathogenic

0.40

BayesDel_noAF

Pathogenic

0.34

CADD

Pathogenic

(source)

DANN

Uncertain

1.0

DEOGEN2

Uncertain

0.77

D;D;.;D

Eigen

Pathogenic

0.98

Eigen_PC

Pathogenic

0.90

FATHMM_MKL

Uncertain

0.95

LIST_S2

Pathogenic

0.98

D;D;D;D

M_CAP

Pathogenic

0.75

MetaRNN

Pathogenic

0.97

D;D;D;D

MetaSVM

Pathogenic

1.1

MutationAssessor

Pathogenic

4.0

.;H;.;.

PhyloP100

3.9

PrimateAI

Uncertain

0.63

PROVEAN

Uncertain

-2.5

N;N;D;D

REVEL

Pathogenic

0.89

Sift

Uncertain

0.0040

D;D;D;D

Sift4G

Uncertain

0.0040

D;D;.;D

Polyphen

1.0

D;D;.;.

Vest4

0.70

MutPred

0.86

Loss of catalytic residue at E126 (P = 0.2107);Loss of catalytic residue at E126 (P = 0.2107);Loss of catalytic residue at E126 (P = 0.2107);Loss of catalytic residue at E126 (P = 0.2107);

MVP

0.99

MPC

1.1

ClinPred

0.98

GERP RS

5.3

Varity_R

0.83

gMVP

0.83

Mutation Taster

=46/54

disease causing

(source)

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.11

Details are displayed if max score is > 0.2

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

Publications

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Computational scores

Splicing

Publications

Other links and lift over