Genetic Variant MEF2A:p.Gln423_Gln428dup (chr15-99712504-C-CCAGCAGCAGCAGCAGCAG) – ACMG Classification: Likely_benign (-2 pts)

Variant summary

Our verdict is Likely benign. The variant received -2 ACMG points: 0P and 2B. BP3BS2_Supporting

The NM_001319206.4(MEF2A):c.1268_1285dupAGCAGCAGCAGCAGCAGC(p.Gln423_Gln428dup) variant causes a disruptive inframe insertion change. It is difficult to determine the true allele frequency of this variant because it is of type INS_BIG, and the frequency of such variant types in population databases may be underestimated and unreliable. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

Frequency

Genomes: 𝑓 0.000027 ( 0 hom., cov: 0)

Exomes 𝑓: 0.0000072 ( 0 hom. )

Consequence

MEF2A
NM_001319206.4 disruptive_inframe_insertion

Scores

Not classified

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: 6.55

Publications

9 publications found

Variant links:

Genes affected

MEF2A (HGNC:6993): (myocyte enhancer factor 2A) The protein encoded by this gene is a DNA-binding transcription factor that activates many muscle-specific, growth factor-induced, and stress-induced genes. The encoded protein can act as a homodimer or as a heterodimer and is involved in several cellular processes, including muscle development, neuronal differentiation, cell growth control, and apoptosis. Defects in this gene could be a cause of autosomal dominant coronary artery disease 1 with myocardial infarction (ADCAD1). Several transcript variants encoding different isoforms have been found for this gene.[provided by RefSeq, Jan 2010]

MEF2A links:

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ACMG classification

Classification was made for transcript

Our verdict: Likely_benign. The variant received -2 ACMG points.

BP3

Nonframeshift variant in repetitive region in NM_001319206.4

BS2

High AC in GnomAdExome4 at 10 AD gene. Variant has AC lower than other variant known as pathogenic in the gene, so the strength is limited to Supporting.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
MEF2A	NM_001319206.4 link	c.1268_1285dupAGCAGCAGCAGCAGCAGC	p.Gln423_Gln428dup	disruptive_inframe_insertion	Exon 12 of 12	ENST00000557942.6	NP_001306135.1	Q02078-2A0A0S2Z4N0

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
MEF2A	ENST00000557942.6 link	c.1268_1285dupAGCAGCAGCAGCAGCAGC	p.Gln423_Gln428dup	disruptive_inframe_insertion	Exon 12 of 12	5	NM_001319206.4	ENSP00000453095.1		Q02078-2

Frequencies

GnomAD3 genomes

AF:

0.0000266

AC:

AN:

150286

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000245

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:

0.0000444

Gnomad OTH

AF:

0.00

GnomAD4 exome

AF:

0.00000724

AC:

AN:

1381130

Hom.:

Cov.:

AF XY:

0.0000103

AC XY:

AN XY:

681108

show subpopulations

African (AFR)

AF:

0.0000637

AC:

AN:

31386

American (AMR)

AF:

0.00

AC:

AN:

35370

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

24828

East Asian (EAS)

AF:

0.00

AC:

AN:

35112

South Asian (SAS)

AF:

0.0000128

AC:

AN:

78090

European-Finnish (FIN)

AF:

0.00

AC:

AN:

47946

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5652

European-Non Finnish (NFE)

AF:

0.00000657

AC:

AN:

1065412

Other (OTH)

AF:

0.00

AC:

AN:

57334

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.480

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

GnomAD4 genome

AF:

0.0000266

AC:

AN:

150286

Hom.:

Cov.:

AF XY:

0.0000273

AC XY:

AN XY:

73250

show subpopulations

African (AFR)

AF:

0.0000245

AC:

AN:

40806

American (AMR)

AF:

0.00

AC:

AN:

15140

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3464

East Asian (EAS)

AF:

0.00

AC:

AN:

5084

South Asian (SAS)

AF:

0.00

AC:

AN:

4710

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10274

Middle Eastern (MID)

AF:

0.00

AC:

AN:

316

European-Non Finnish (NFE)

AF:

0.0000444

AC:

AN:

67544

Other (OTH)

AF:

0.00

AC:

AN:

2048

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.563

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome Het

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

Alfa

AF:

0.00

Hom.:

638

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

PhyloP100

6.5

Mutation Taster

=56/44

polymorphism

(source)

Splicing

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

Age Distribution

ClinVar

Computational scores

Splicing

Publications

Other links and lift over