18-2891273-C-A

Variant summary

Our verdict is Likely benign. Variant got -2 ACMG points: 2P and 4B. PM2 BP4_Strong

The NM_032048.3(EMILIN2):c.1146C>A(p.Asn382Lys) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000013 in 1,461,860 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 15/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. N382S) has been classified as Uncertain significance.

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 0.000013 (0 hom.)
• Consequence: EMILIN2 NM_032048.3 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: -0.151

Genes affected

EMILIN2 (HGNC:19881): (elastin microfibril interfacer 2) Predicted to enable extracellular matrix constituent conferring elasticity. Predicted to be involved in cell adhesion. Located in extracellular region. [provided by Alliance of Genome Resources, Apr 2022]

LPIN2 (HGNC:14450): (lipin 2) Mouse studies suggest that this gene functions during normal adipose tissue development and may play a role in human triglyceride metabolism. This gene represents a candidate gene for human lipodystrophy, characterized by loss of body fat, fatty liver, hypertriglyceridemia, and insulin resistance. [provided by RefSeq, Jul 2008]

ACMG classification

Verdict is Likely_benign. Variant got -2 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.051971167).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
EMILIN2	NM_032048.3	c.1146C>A	p.Asn382Lys	missense_variant	4/8	ENST00000254528.4

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
EMILIN2	ENST00000254528.4	c.1146C>A	p.Asn382Lys	missense_variant	4/8	1	NM_032048.3	P1
LPIN2	ENST00000697039.1	c.2547-5839G>T		intron_variant

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome AF: 0.0000130 AC: 19 AN: 1461860 Hom.: 0 Cov.: 31 AF XY: 0.0000124 AC XY: 9 AN XY: 727220

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: 0.0000162

Gnomad4 OTH exome AF: 0.0000166

GnomAD4 genome Cov.: 32

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

not specified Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Apr 07, 2023

The c.1146C>A (p.N382K) alteration is located in exon 4 (coding exon 4) of the EMILIN2 gene. This alteration results from a C to A substitution at nucleotide position 1146, causing the asparagine (N) at amino acid position 382 to be replaced by a lysine (K). 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	0.14
BayesDel_addAF	Benign	-0.36	T
BayesDel_noAF	Benign	-0.75
Cadd	Benign	5.2
Dann	Benign	0.96
DEOGEN2	Benign	0.0084	T
Eigen	Benign	-0.81
Eigen_PC	Benign	-0.67
FATHMM_MKL	Benign	0.58	D
LIST_S2	Benign	0.58	T
M_CAP	Benign	0.0061	T
MetaRNN	Benign	0.052	T
MetaSVM	Benign	-0.99	T
MutationAssessor	Benign	0.0	N
MutationTaster	Benign	1.0	N
PrimateAI	Benign	0.29	T
PROVEAN	Benign	-0.39	N
REVEL	Benign	0.040
Sift	Benign	0.24	T
Sift4G	Benign	0.25	T
Polyphen		0.0010	B
Vest4		0.046
MutPred		0.26		Gain of MoRF binding (P = 0.0225);
MVP		0.27
MPC		0.097
ClinPred		0.078	T
GERP RS		2.6
Varity_R		0.065
gMVP		0.095

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

No publications associated with this variant yet.

Other links and lift over

hg19: chr18-2891271;