5-88722623-G-A

Variant summary

Our verdict is Uncertain significance. Variant got 3 ACMG points: 3P and 0B. PM2 PP2

The NM_002397.5(MEF2C):c.1403C>T(p.Ser468Phe) variant causes a missense change involving the alteration of a conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 0.0 (0 hom.)
  • Failed GnomAD Quality Control
• Consequence: MEF2C NM_002397.5 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 9.49

Genes affected

MEF2C (HGNC:6996): (myocyte enhancer factor 2C) This locus encodes a member of the MADS box transcription enhancer factor 2 (MEF2) family of proteins, which play a role in myogenesis. The encoded protein, MEF2 polypeptide C, has both trans-activating and DNA binding activities. This protein may play a role in maintaining the differentiated state of muscle cells. Mutations and deletions at this locus have been associated with severe cognitive disability, stereotypic movements, epilepsy, and cerebral malformation. Alternatively spliced transcript variants have been described. [provided by RefSeq, Jul 2010]

MEF2C-AS2 (HGNC:53115): (MEF2C antisense RNA 2)

ACMG classification

Verdict is Uncertain_significance. Variant got 3 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PP2: Missense variant where missense usually causes diseases, MEF2C

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
MEF2C	NM_002397.5	c.1403C>T	p.Ser468Phe	missense_variant	11/11	ENST00000504921.7
MEF2C-AS2	NR_146284.1	n.256-1G>A		splice_acceptor_variant, non_coding_transcript_variant

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
MEF2C	ENST00000504921.7	c.1403C>T	p.Ser468Phe	missense_variant	11/11	1	NM_002397.5
MEF2C-AS2	ENST00000657578.1	n.232-39374G>A		intron_variant, non_coding_transcript_variant

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Data not reliable, filtered out with message: AC0 AF: 0.00 AC: 0 AN: 1459532 Hom.: 0 Cov.: 33 AF XY: 0.00 AC XY: 0 AN XY: 725710

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: 0.00

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome Cov.: 32

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

Intellectual disability, autosomal dominant 20 Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Genetic Services Laboratory, University of Chicago

Feb 08, 2013

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Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	0.62
BayesDel_addAF	Pathogenic	0.17	D
BayesDel_noAF	Uncertain	0.0
Cadd	Pathogenic	34
Dann	Uncertain	1.0
DEOGEN2	Benign	0.20	T;.;.;T;.;.;T;T;.;T;.;.;.;T;T;.;.;.;.
Eigen	Uncertain	0.59
Eigen_PC	Pathogenic	0.68
FATHMM_MKL	Pathogenic	0.99	D
M_CAP	Benign	0.071	D
MetaRNN	Uncertain	0.55	D;D;D;D;D;D;D;D;D;D;D;D;D;D;D;D;D;D;D
MetaSVM	Benign	-0.37	T
MutationAssessor	Benign	1.8	L;.;.;.;.;.;L;.;.;.;.;.;.;L;.;.;.;.;.
MutationTaster	Benign	1.0	D;D;D;D;D;D;D;D;D;D
PrimateAI	Pathogenic	0.85	D
PROVEAN	Benign	-1.4	N;N;N;.;.;.;N;.;.;.;.;N;.;.;.;.;.;.;.
REVEL	Uncertain	0.30
Sift	Uncertain	0.0010	D;D;D;.;.;.;D;.;.;.;.;D;.;.;.;.;.;.;.
Sift4G	Uncertain	0.014	D;D;D;.;.;D;D;D;D;D;.;D;D;.;D;D;.;D;D
Polyphen		0.92	P;.;.;.;.;.;P;.;.;.;.;.;D;P;.;D;.;.;.
Vest4		0.49
MutPred		0.31		Loss of phosphorylation at S468 (P = 0.0111);.;.;.;.;.;Loss of phosphorylation at S468 (P = 0.0111);.;.;.;.;.;.;Loss of phosphorylation at S468 (P = 0.0111);.;.;.;.;.;
MVP		0.89
MPC		2.6
ClinPred		0.92	D
GERP RS		5.5
Varity_R		0.42
gMVP		0.64

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: rs607159; hg19: chr5-88018440;