Genetic Variant NM_017770.4:c.784A>T (chr6-10983888-T-A) – ACMG Classification: Likely_benign (-2 pts)

Variant summary

Our verdict is Likely benign. The variant received -2 ACMG points: 2P and 4B. PM2BP4_Strong

The NM_017770.4(ELOVL2):c.784A>T(p.Met262Leu) 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 1,460,618 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 16/22 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: not found (cov: 33)

Exomes 𝑓: 0.0000014 ( 0 hom. )

Consequence

ELOVL2
NM_017770.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: -0.313

Publications

0 publications found

Variant links:

Genes affected

ELOVL2 (HGNC:14416): (ELOVL fatty acid elongase 2) Enables fatty acid elongase activity. Involved in fatty acid elongation, polyunsaturated fatty acid and very long-chain fatty acid biosynthetic process. Located in endoplasmic reticulum. [provided by Alliance of Genome Resources, Apr 2022]

ELOVL2 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

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=0.027230471).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
ELOVL2	NM_017770.4 link	c.784A>T	p.Met262Leu	missense_variant	Exon 8 of 8	ENST00000354666.4	NP_060240.3	Q9NXB9A0A024QZV3
ELOVL2	XM_011514716.4 link	c.874A>T	p.Met292Leu	missense_variant	Exon 8 of 8		XP_011513018.1
ELOVL2	XM_011514717.4 link	c.787A>T	p.Met263Leu	missense_variant	Exon 8 of 8		XP_011513019.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
ELOVL2	ENST00000354666.4 link	c.784A>T	p.Met262Leu	missense_variant	Exon 8 of 8	1	NM_017770.4	ENSP00000346693.3		Q9NXB9

Frequencies

GnomAD3 genomes

Cov.:

GnomAD2 exomes

AF:

0.0000120

AC:

AN:

249930

AF XY:

0.0000148

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.000164

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.00000137

AC:

AN:

1460618

Hom.:

Cov.:

AF XY:

0.00000138

AC XY:

AN XY:

726566

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

33362

American (AMR)

AF:

0.00

AC:

AN:

44432

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26116

East Asian (EAS)

AF:

0.0000504

AC:

AN:

39674

South Asian (SAS)

AF:

0.00

AC:

AN:

85938

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53374

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5764

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

1111612

Other (OTH)

AF:

0.00

AC:

AN:

60346

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.425

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

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Jun 02, 2023

Ambry Genetics

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

The c.784A>T (p.M262L) alteration is located in exon 8 (coding exon 8) of the ELOVL2 gene. This alteration results from a A to T substitution at nucleotide position 784, causing the methionine (M) at amino acid position 262 to be replaced by a leucine (L). 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

0.072

BayesDel_addAF

Benign

-0.54

BayesDel_noAF

Benign

-0.74

CADD

Benign

0.33

(source)

DANN

Benign

0.82

DEOGEN2

Benign

0.11

Eigen

Benign

-1.5

Eigen_PC

Benign

-1.5

FATHMM_MKL

Benign

0.026

LIST_S2

Benign

0.24

M_CAP

Benign

0.0028

MetaRNN

Benign

0.027

MetaSVM

Benign

-0.97

MutationAssessor

Benign

-0.23

PhyloP100

-0.31

PrimateAI

Benign

0.24

PROVEAN

Benign

-0.31

REVEL

Benign

0.045

Sift

Benign

0.38

Sift4G

Benign

0.32

Polyphen

0.0

Vest4

0.084

MutPred

0.55

Loss of methylation at K259 (P = 0.0688);

MVP

0.17

MPC

0.12

ClinPred

0.015

GERP RS

-10

Varity_R

0.096

gMVP

0.32

Mutation Taster

=99/1

polymorphism

(source)

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

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NM_017770.4:c.784A>T

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over