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rs397514621

Variant summary

Our verdict is Pathogenic. Variant got 11 ACMG points: 11P and 0B. PVS1PM2PP5

The NM_001271938.2(MEGF8):​c.1342C>T​(p.Arg448Ter) variant causes a stop gained change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000372 in 1,613,440 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Pathogenic (no stars). Variant results in nonsense mediated mRNA decay.

Frequency

Genomes: 𝑓 0.0000066 ( 0 hom., cov: 32)
Exomes 𝑓: 0.0000034 ( 0 hom. )

Consequence

MEGF8
NM_001271938.2 stop_gained

Scores

2
2
3

Clinical Significance

Pathogenic no assertion criteria provided P:1

Conservation

PhyloP100: 0.220
Variant links:
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]

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ACMG classification

Classification made for transcript

Verdict is Pathogenic. Variant got 11 ACMG points.

PVS1
Loss of function variant, product undergoes nonsense mediated mRNA decay. LoF is a known mechanism of disease.
PM2
Very rare variant in population databases, with high coverage;
PP5
Variant 19-42336904-C-T is Pathogenic according to our data. Variant chr19-42336904-C-T is described in ClinVar as [Pathogenic]. Clinvar id is 39847.Status of the report is no_assertion_criteria_provided, 0 stars.

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect #exon/exons MANE UniProt
MEGF8NM_001271938.2 linkuse as main transcriptc.1342C>T p.Arg448Ter stop_gained 7/42 ENST00000251268.11
MEGF8NM_001410.3 linkuse as main transcriptc.1342C>T p.Arg448Ter stop_gained 7/41

Ensembl

Gene Transcript HGVSc HGVSp Effect #exon/exons TSL MANE Appris UniProt
MEGF8ENST00000251268.11 linkuse as main transcriptc.1342C>T p.Arg448Ter stop_gained 7/425 NM_001271938.2 A2Q7Z7M0-1
MEGF8ENST00000334370.8 linkuse as main transcriptc.1342C>T p.Arg448Ter stop_gained 7/411 P2Q7Z7M0-2
MEGF8ENST00000378073.5 linkuse as main transcriptc.-5744C>T 5_prime_UTR_variant 7/415

Frequencies

GnomAD3 genomes
AF:
0.00000658
AC:
1
AN:
152080
Hom.:
0
Cov.:
32
show subpopulations
Gnomad AFR
AF:
0.0000242
Gnomad AMI
AF:
0.00
Gnomad AMR
AF:
0.00
Gnomad ASJ
AF:
0.00
Gnomad EAS
AF:
0.00
Gnomad SAS
AF:
0.00
Gnomad FIN
AF:
0.00
Gnomad MID
AF:
0.00
Gnomad NFE
AF:
0.00
Gnomad OTH
AF:
0.00
GnomAD3 exomes
AF:
0.00000399
AC:
1
AN:
250568
Hom.:
0
AF XY:
0.00000738
AC XY:
1
AN XY:
135484
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:
0.0000327
Gnomad FIN exome
AF:
0.00
Gnomad NFE exome
AF:
0.00
Gnomad OTH exome
AF:
0.00
GnomAD4 exome
AF:
0.00000342
AC:
5
AN:
1461360
Hom.:
0
Cov.:
31
AF XY:
0.00000275
AC XY:
2
AN XY:
726996
show subpopulations
Gnomad4 AFR exome
AF:
0.00
Gnomad4 AMR exome
AF:
0.00
Gnomad4 ASJ exome
AF:
0.00
Gnomad4 EAS exome
AF:
0.0000252
Gnomad4 SAS exome
AF:
0.0000116
Gnomad4 FIN exome
AF:
0.00
Gnomad4 NFE exome
AF:
0.00000270
Gnomad4 OTH exome
AF:
0.00
GnomAD4 genome
AF:
0.00000658
AC:
1
AN:
152080
Hom.:
0
Cov.:
32
AF XY:
0.00
AC XY:
0
AN XY:
74264
show subpopulations
Gnomad4 AFR
AF:
0.0000242
Gnomad4 AMR
AF:
0.00
Gnomad4 ASJ
AF:
0.00
Gnomad4 EAS
AF:
0.00
Gnomad4 SAS
AF:
0.00
Gnomad4 FIN
AF:
0.00
Gnomad4 NFE
AF:
0.00
Gnomad4 OTH
AF:
0.00
Bravo
AF:
0.00000378

ClinVar

Significance: Pathogenic
Submissions summary: Pathogenic:1
Revision: no assertion criteria provided
LINK: link

Submissions by phenotype

MEGF8-related Carpenter syndrome Pathogenic:1
Pathogenic, no assertion criteria providedliterature onlyOMIMNov 02, 2012- -

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
BayesDel_addAF
Pathogenic
0.56
D
BayesDel_noAF
Pathogenic
0.55
CADD
Pathogenic
35
DANN
Uncertain
0.99
Eigen
Benign
-0.065
Eigen_PC
Benign
-0.27
FATHMM_MKL
Uncertain
0.77
D
MutationTaster
Benign
1.0
A;A
Vest4
0.26
GERP RS
1.6

Splicing

Name
Calibrated prediction
Score
Prediction
SpliceAI score (max)
0.34
Details are displayed if max score is > 0.2
DS_DL_spliceai
0.34
Position offset: 48

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.

Other links and lift over

dbSNP: rs397514621; hg19: chr19-42841056; COSMIC: COSV99240314; API