Genetic Variant NM_030652.4:c.505G>T (chr6-32167161-G-T) – ACMG Classification: Uncertain_significance (2 pts)

Variant summary

Our verdict is Uncertain significance. Variant got 2 ACMG points: 2P and 0B. PM2

The NM_030652.4(EGFL8):c.505G>T(p.Gly169Cys) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000000685 in 1,460,728 control chromosomes in the GnomAD database, with no homozygous occurrence. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

Frequency

Genomes: not found (cov: 33)

Exomes 𝑓: 6.8e-7 ( 0 hom. )

Consequence

EGFL8
NM_030652.4 missense

Scores

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: -0.586

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:

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ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
EGFL8	NM_030652.4 link	c.505G>T	p.Gly169Cys	missense_variant	Exon 6 of 9	ENST00000333845.11	NP_085155.1	Q99944A0A1U9X7N9
EGFL8	NR_037860.2 link	n.620G>T		non_coding_transcript_exon_variant	Exon 6 of 9
PPT2-EGFL8	NR_037861.1 link	n.2022G>T		non_coding_transcript_exon_variant	Exon 13 of 16

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	UniProt
EGFL8	ENST00000333845.11 link	c.505G>T	p.Gly169Cys	missense_variant	Exon 6 of 9	1	NM_030652.4	ENSP00000333380.6	Q99944
PPT2-EGFL8	ENST00000422437.5 link	n.*421G>T		non_coding_transcript_exon_variant	Exon 14 of 21	5		ENSP00000457534.1
PPT2-EGFL8	ENST00000422437.5 link	n.*421G>T		3_prime_UTR_variant	Exon 14 of 21	5		ENSP00000457534.1

Frequencies

GnomAD3 genomes

Cov.:

GnomAD4 exome

AF:

6.85e-7

AC:

AN:

1460728

Hom.:

Cov.:

AF XY:

0.00000138

AC XY:

AN XY:

726672

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:

8.99e-7

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

Cov.:

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.23

BayesDel_addAF

Uncertain

0.063

BayesDel_noAF

Benign

-0.15

CADD

Benign

DANN

Uncertain

1.0

DEOGEN2

Benign

0.21

T;T;.

Eigen

Benign

-0.062

Eigen_PC

Benign

-0.20

FATHMM_MKL

Benign

0.42

LIST_S2

Uncertain

0.94

.;D;T

M_CAP

Pathogenic

0.35

MetaRNN

Uncertain

0.58

D;D;D

MetaSVM

Uncertain

-0.14

MutationAssessor

Uncertain

2.4

M;M;.

PROVEAN

Benign

-1.0

N;N;N

REVEL

Uncertain

0.42

Sift

Benign

0.056

T;T;D

Sift4G

Uncertain

0.052

T;T;T

Polyphen

1.0

D;D;.

Vest4

0.36

MutPred

0.30

Loss of sheet (P = 0.0817);Loss of sheet (P = 0.0817);.;

MVP

0.98

MPC

1.2

ClinPred

0.76

GERP RS

-0.15

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.7

Varity_R

0.15

gMVP

0.79

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.070

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.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Computational scores

Splicing

Publications

Other links and lift over