5-127331280-C-T

Variant names:

• chr5-127331280-C-T
• rs138523651
• NM_001256545.2:c.-18-11C>T

Variant summary

Our verdict is Benign. The variant received -9 ACMG points: 0P and 9B. BP4_Strong BP6 BS1

The NM_001256545.2(MEGF10):​c.-18-11C>T variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000455 in 1,408,124 control chromosomes in the GnomAD database, including 1 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars).

• Frequency:
  • Genomes: 𝑓 0.0023 (0 hom., cov: 32)
  • Exomes 𝑓: 0.00023 (1 hom.)
• Consequence: MEGF10 NM_001256545.2 intron
• Scores: Splicing: ADA: 0.00003468
• Clinical Significance: Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:1 B:1
• Conservation: PhyloP100: 0.00
• Publications: 0 publications found

Genes affected

MEGF10 (HGNC:29634): (multiple EGF like domains 10) This gene encodes a member of the multiple epidermal growth factor-like domains protein family. The encoded protein plays a role in cell adhesion, motility and proliferation, and is a critical mediator of apoptotic cell phagocytosis as well as amyloid-beta peptide uptake in the brain. Expression of this gene may be associated with schizophrenia, and mutations in this gene are a cause of early-onset myopathy, areflexia, respiratory distress, and dysphagia (EMARDD) as well as congenital myopathy with minicores. Alternatively spliced transcript variants have been observed for this gene. [provided by RefSeq, Apr 2012]

MEGF10 Gene-Disease associations (from GenCC):

• MEGF10-related myopathy

  Inheritance: AR Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: Orphanet, G2P, Labcorp Genetics (formerly Invitae), ClinGen

ACMG classification

Our verdict: Benign. The variant received -9 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.84).
• BP6: Variant 5-127331280-C-T is Benign according to our data. Variant chr5-127331280-C-T is described in ClinVar as [Conflicting_classifications_of_pathogenicity]. Clinvar id is 350634.We mark this variant Likely_benign, oryginal submission is: [Conflicting_classifications_of_pathogenicity].
• BS1: Variant frequency is greater than expected in population afr. GnomAd4 allele frequency = 0.0023 (350/152110) while in subpopulation AFR AF = 0.00803 (333/41476). AF 95% confidence interval is 0.00732. There are 0 homozygotes in GnomAd4. There are 166 alleles in the male GnomAd4 subpopulation. Median coverage is 32. This position passed quality control check.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
MEGF10	NM_001256545.2	c.-18-11C>T		intron_variant	Intron 1 of 24	ENST00000503335.7	NP_001243474.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
MEGF10	ENST00000503335.7	c.-18-11C>T		intron_variant	Intron 1 of 24	1	NM_001256545.2	ENSP00000423354.2
MEGF10	ENST00000274473.6	c.-18-11C>T		intron_variant	Intron 2 of 25	1		ENSP00000274473.6
MEGF10	ENST00000418761.6	c.-18-11C>T		intron_variant	Intron 2 of 14	1		ENSP00000416284.2
MEGF10	ENST00000508365.5	c.-18-11C>T		intron_variant	Intron 1 of 13	1		ENSP00000423195.1

Frequencies

GnomAD3 genomes AF: 0.00229 AC: 348 AN: 151992 Hom.: 0 Cov.: 32

Gnomad AFR AF: 0.00800

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.000786

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: 0.0000441

Gnomad OTH AF: 0.000958

GnomAD2 exomes AF: 0.000607 AC: 144 AN: 237108 AF XY: 0.000444

Gnomad AFR exome AF: 0.00826

Gnomad AMR exome AF: 0.000357

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.00

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.00

Gnomad OTH exome AF: 0.000354

GnomAD4 exome AF: 0.000231 AC: 290 AN: 1256014 Hom.: 1 Cov.: 17 AF XY: 0.000203 AC XY: 129 AN XY: 635154

African (AFR) AF: 0.00827 AC: 236 AN: 28550

American (AMR) AF: 0.000488 AC: 20 AN: 40972

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 24264

East Asian (EAS) AF: 0.00 AC: 0 AN: 38644

South Asian (SAS) AF: 0.0000625 AC: 5 AN: 80050

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 52904

Middle Eastern (MID) AF: 0.000188 AC: 1 AN: 5310

European-Non Finnish (NFE) AF: 0.00000322 AC: 3 AN: 932110

Other (OTH) AF: 0.000470 AC: 25 AN: 53210

GnomAD4 genome AF: 0.00230 AC: 350 AN: 152110 Hom.: 0 Cov.: 32 AF XY: 0.00223 AC XY: 166 AN XY: 74370

African (AFR) AF: 0.00803 AC: 333 AN: 41476

American (AMR) AF: 0.000785 AC: 12 AN: 15280

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 3470

East Asian (EAS) AF: 0.00 AC: 0 AN: 5180

South Asian (SAS) AF: 0.00 AC: 0 AN: 4824

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 10596

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 292

European-Non Finnish (NFE) AF: 0.0000441 AC: 3 AN: 67970

Other (OTH) AF: 0.000948 AC: 2 AN: 2110

Alfa AF: 0.000214 Hom.: 0

Bravo AF: 0.00266

Asia WGS AF: 0.00202 AC: 7 AN: 3478

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Uncertain:1 Benign:1

Revision: criteria provided, conflicting classifications

Submissions by phenotype

MEGF10-related myopathy Uncertain:1

Jan 13, 2018

Illumina Laboratory Services, Illumina

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

This variant was observed in the ICSL laboratory as part of a predisposition screen in an ostensibly healthy population. It had not been previously curated by ICSL or reported in the Human Gene Mutation Database (HGMD: prior to June 1st, 2018), and was therefore a candidate for classification through an automated scoring system. Utilizing variant allele frequency, disease prevalence and penetrance estimates, and inheritance mode, an automated score was calculated to assess if this variant is too frequent to cause the disease. Based on the score, this variant could not be ruled out of causing disease and therefore its association with disease required further investigation. A literature search was performed for the gene, cDNA change, and amino acid change (if applicable). No publications were found based on this search. This variant was therefore classified as a variant of unknown significance for this disease. -

not provided Benign:1

Apr 15, 2019

GeneDx

Significance: Likely benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.84
CADD	Benign	9.3
DANN	Benign	0.15
PhyloP100		0.0
Mutation Taster		=100/0	polymorphism

Splicing

Name	Calibrated prediction	Score	Prediction
dbscSNV1_ADA	Benign	0.000035
dbscSNV1_RF	Benign	0.14
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

Other links and lift over

dbSNP: rs138523651; hg19: chr5-126666972;