Genetic Variant EMILIN1:p.Cys9Tyr (chr2-27079091-G-A) – ACMG Classification: Likely_benign (-5 pts)

Variant summary

Our verdict is Likely benign. Variant got -5 ACMG points: 0P and 5B. BS1_SupportingBS2

The NM_007046.4(EMILIN1):c.26G>A(p.Cys9Tyr) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000289 in 1,452,404 control chromosomes in the GnomAD database, including 2 homozygotes. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: not found (cov: 32)

Exomes 𝑓: 0.000029 ( 2 hom. )

Consequence

EMILIN1
NM_007046.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 2.30

Variant links:

Genes affected

EMILIN1 (HGNC:19880): (elastin microfibril interfacer 1) This gene encodes an extracellular matrix glycoprotein that is characterized by an N-terminal microfibril interface domain, a coiled-coiled alpha-helical domain, a collagenous domain and a C-terminal globular C1q domain. The encoded protein associates with elastic fibers at the interface between elastin and microfibrils and may play a role in the development of elastic tissues including large blood vessels, dermis, heart and lung. [provided by RefSeq, Sep 2009]

EMILIN1 links:

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ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -5 ACMG points.

BS1

Variant frequency is greater than expected in population sas. gnomad4_exome allele frequency = 0.0000289 (42/1452404) while in subpopulation SAS AF= 0.000477 (41/85998). AF 95% confidence interval is 0.000361. There are 2 homozygotes in gnomad4_exome. There are 31 alleles in male gnomad4_exome subpopulation. Median coverage is 31. This position pass quality control queck. Existence of Clinvar submissions makes me limit the strength of this signal to Supporting

BS2

High AC in GnomAdExome4 at 42 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
EMILIN1	NM_007046.4 link	c.26G>A	p.Cys9Tyr	missense_variant	Exon 1 of 8	ENST00000380320.9	NP_008977.1	Q9Y6C2-1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
EMILIN1	ENST00000380320.9 link	c.26G>A	p.Cys9Tyr	missense_variant	Exon 1 of 8	1	NM_007046.4	ENSP00000369677.4		Q9Y6C2-1

Frequencies

GnomAD3 genomes

Cov.:

GnomAD3 exomes

AF:

0.0000435

AC:

AN:

230126

Hom.:

AF XY:

0.0000392

AC XY:

AN XY:

127538

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:

0.000330

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000289

AC:

AN:

1452404

Hom.:

Cov.:

AF XY:

0.0000429

AC XY:

AN XY:

722696

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:

0.000477

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00

Gnomad4 OTH exome

AF:

0.0000167

GnomAD4 genome

Cov.:

ExAC

AF:

0.0000498

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

Inborn genetic diseases

Uncertain:1

Dec 04, 2024

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.26G>A (p.C9Y) alteration is located in exon 1 (coding exon 1) of the EMILIN1 gene. This alteration results from a G to A substitution at nucleotide position 26, causing the cysteine (C) at amino acid position 9 to be replaced by a tyrosine (Y). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.23

BayesDel_addAF

Benign

-0.083

BayesDel_noAF

Uncertain

-0.040

CADD

Benign

DANN

Uncertain

0.99

DEOGEN2

Benign

0.19

Eigen

Uncertain

0.35

Eigen_PC

Uncertain

0.37

FATHMM_MKL

Uncertain

0.86

LIST_S2

Benign

0.79

M_CAP

Benign

0.060

MetaRNN

Uncertain

0.48

MetaSVM

Benign

-0.37

MutationAssessor

Benign

0.55

PrimateAI

Uncertain

0.76

PROVEAN

Benign

-1.9

REVEL

Uncertain

0.49

Sift

Pathogenic

0.0

Sift4G

Uncertain

0.0030

Polyphen

0.99

Vest4

0.53

MutPred

0.59

Gain of disorder (P = 0.0705);

MVP

0.90

MPC

0.31

ClinPred

0.30

GERP RS

4.4

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.7

Varity_R

0.32

gMVP

0.58

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

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