6-32167545-G-C

Variant names:

Variant summary

Our verdict is Likely benign. Variant got -2 ACMG points: 2P and 4B. PM2BP4_Strong

The NM_030652.4(EGFL8):c.724G>C(p.Val242Leu) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000343 in 1,456,414 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 13/20 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: not found (cov: 32)

Exomes 𝑓: 0.0000034 ( 0 hom. )

Consequence

EGFL8
NM_030652.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: -1.58

Variant links:

Genes affected

EGFL8 (HGNC:13944): (EGF like domain multiple 8) Predicted to enable signaling receptor binding activity. Predicted to be involved in anatomical structure development. Predicted to act upstream of or within in utero embryonic development. Predicted to be active in cell surface and extracellular region. [provided by Alliance of Genome Resources, Apr 2022]

EGFL8 links:

PPT2-EGFL8 (HGNC:48343): (PPT2-EGFL8 readthrough (NMD candidate)) This locus represents naturally occurring read-through transcription between the neighboring PPT2 (palmitoyl-protein thioesterase 2) and EGFL8 (EGF-like-domain, multiple 8) genes located in the major histocompatibility complex class III region of chromosome 6. The read-through transcript is a candidate for nonsense-mediated mRNA decay (NMD), and is thus unlikely to produce a protein product. [provided by RefSeq, Feb 2011]

PPT2-EGFL8 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

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=0.06519744).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
EGFL8	NM_030652.4 link	c.724G>C	p.Val242Leu	missense_variant	Exon 8 of 9	ENST00000333845.11	NP_085155.1	Q99944A0A1U9X7N9
EGFL8	NR_037860.2 link	n.839G>C		non_coding_transcript_exon_variant	Exon 8 of 9
PPT2-EGFL8	NR_037861.1 link	n.2241G>C		non_coding_transcript_exon_variant	Exon 15 of 16

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	UniProt
EGFL8	ENST00000333845.11 link	c.724G>C	p.Val242Leu	missense_variant	Exon 8 of 9	1	NM_030652.4	ENSP00000333380.6	Q99944
PPT2-EGFL8	ENST00000422437.5 link	n.*640G>C		non_coding_transcript_exon_variant	Exon 16 of 21	5		ENSP00000457534.1
PPT2-EGFL8	ENST00000422437.5 link	n.*640G>C		3_prime_UTR_variant	Exon 16 of 21	5		ENSP00000457534.1

Frequencies

GnomAD3 genomes

Cov.:

GnomAD3 exomes

AF:

0.00000412

AC:

AN:

242670

Hom.:

AF XY:

0.00000755

AC XY:

AN XY:

132530

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:

0.00000907

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.00000343

AC:

AN:

1456414

Hom.:

Cov.:

AF XY:

0.00000414

AC XY:

AN XY:

724632

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:

0.00000450

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

Cov.:

Bravo

AF:

0.00000378

ExAC

AF:

0.00000845

AC:

EpiCase

AF:

0.00

EpiControl

AF:

0.0000593

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Feb 15, 2023

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.724G>C (p.V242L) alteration is located in exon 8 (coding exon 7) of the EGFL8 gene. This alteration results from a G to C substitution at nucleotide position 724, causing the valine (V) at amino acid position 242 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

0.088

BayesDel_addAF

Benign

-0.010

BayesDel_noAF

Benign

-0.25

CADD

Benign

0.026

DANN

Benign

0.84

DEOGEN2

Benign

0.0015

T;T;.

Eigen

Benign

-2.0

Eigen_PC

Benign

-2.1

FATHMM_MKL

Benign

0.090

LIST_S2

Benign

0.69

.;T;T

M_CAP

Uncertain

0.093

MetaRNN

Benign

0.065

T;T;T

MetaSVM

Benign

-0.86

MutationAssessor

Benign

1.1

L;L;.

PROVEAN

Benign

-0.16

N;N;N

REVEL

Benign

0.27

Sift

Benign

0.69

T;T;T

Sift4G

Benign

0.15

T;T;T

Polyphen

0.040

B;B;.

Vest4

0.20

MutPred

0.28

Gain of glycosylation at P241 (P = 0.0558);Gain of glycosylation at P241 (P = 0.0558);.;

MVP

0.84

MPC

0.42

ClinPred

0.041

GERP RS

-11

RBP_binding_hub_radar

0.97

RBP_regulation_power_radar

2.7

Varity_R

0.044

gMVP

0.39

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