chr19-42375942-G-T

Position:

• chr19-42375942-G-T

Variant summary

Our verdict is Uncertain significance. Variant got 0 ACMG points: 2P and 2B. PM2 BP4_Moderate

The NM_001271938.2(MEGF8):​c.7705G>T​(p.Val2569Leu) variant causes a missense change involving the alteration of a conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. V2569I) has been classified as Likely benign.

• Frequency: Genomes: not found (cov: 32)
• Consequence: MEGF8 NM_001271938.2 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 9.12

Genes affected

MEGF8 (HGNC:3233): (multiple EGF like domains 8) The protein encoded by this gene is a single-pass type I membrane protein of unknown function that contains several EGF-like domains, Kelch repeats, and PSI domains. Defects in this gene are a cause of Carpenter syndrome 2. Two transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Dec 2012]

ACMG classification

Verdict is Uncertain_significance. Variant got 0 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.12088016).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
MEGF8	NM_001271938.2	c.7705G>T	p.Val2569Leu	missense_variant	42/42	ENST00000251268.11
MEGF8	NM_001410.3	c.7504G>T	p.Val2502Leu	missense_variant	41/41

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
MEGF8	ENST00000251268.11	c.7705G>T	p.Val2569Leu	missense_variant	42/42	5	NM_001271938.2	A2

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 31

GnomAD4 genome Cov.: 32

Bravo AF: 0.00000756

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.19
BayesDel_addAF	Benign	-0.14	T
BayesDel_noAF	Benign	-0.44
CADD	Benign	20
DANN	Uncertain	0.99
DEOGEN2	Benign	0.10	.;.;T
Eigen	Uncertain	0.19
Eigen_PC	Uncertain	0.32
FATHMM_MKL	Pathogenic	0.99	D
LIST_S2	Benign	0.85	T;T;T
M_CAP	Benign	0.010	T
MetaRNN	Benign	0.12	T;T;T
MetaSVM	Benign	-1.1	T
MutationAssessor	Benign	0.34	.;.;N
MutationTaster	Benign	1.0	D;D;D
PrimateAI	Uncertain	0.66	T
PROVEAN	Benign	-0.90	N;N;N
REVEL	Benign	0.079
Sift	Benign	0.23	T;T;T
Sift4G	Benign	0.33	T;T;T
Polyphen		0.57	P;P;P
Vest4		0.13
MutPred		0.26		.;.;Loss of sheet (P = 0.0054);
MVP		0.14
MPC		0.60
ClinPred		0.85	D
GERP RS		5.1
Varity_R		0.12
gMVP		0.42

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

Other links and lift over

dbSNP: rs147133204; hg19: chr19-42880094;