Variant chr19-19145869-C-A details in Genebe, Genetics Data Aggregator

Variant summary

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

The NM_001145785.2(MEF2B):c.1035G>T(p.Arg345=) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000158 in 1,328,212 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: not found (cov: 32)

Exomes 𝑓: 0.000016 ( 0 hom. )

Consequence

MEF2B
NM_001145785.2 synonymous

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 0.115

Variant links:

Genes affected

MEF2B (HGNC:6995): (myocyte enhancer factor 2B) The product of this gene is a member of the MADS/MEF2 family of DNA binding proteins. The protein is thought to regulate gene expression, including expression of the smooth muscle myosin heavy chain gene. This region undergoes considerable alternative splicing, with transcripts supporting two non-overlapping loci (GeneID 729991 and 100271849) as well as numerous read-through transcripts that span both loci (annotated as GeneID 4207). Several isoforms of this protein are expressed from either this locus or from some of the read-through transcripts annotated on GeneID 4207. [provided by RefSeq, Jan 2014]

MEF2B links:

BORCS8-MEF2B (HGNC:):

BORCS8-MEF2B links:

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ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
MEF2B	NM_001145785.2 linkuse as main transcript	c.1035G>T	p.Arg345=	synonymous_variant	9/9	ENST00000424583.7
BORCS8-MEF2B	NR_027308.2 linkuse as main transcript	n.1389G>T		non_coding_transcript_exon_variant	12/12

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
MEF2B	ENST00000424583.7 linkuse as main transcript	c.1035G>T	p.Arg345=	synonymous_variant	9/9	5	NM_001145785.2	P4	Q02080-2

Frequencies

GnomAD3 genomes

Cov.:

GnomAD4 exome

AF:

0.0000158

AC:

AN:

1328212

Hom.:

Cov.:

AF XY:

0.0000185

AC XY:

AN XY:

648304

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.0000861

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.0000124

Gnomad4 OTH exome

AF:

0.0000366

GnomAD4 genome

Cov.:

Bravo

AF:

0.00000378

ExAC

AF:

0.0000200

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Jan 06, 2023

The c.923G>T (p.G308V) alteration is located in exon 10 (coding exon 7) of the BORCS8-MEF2B gene. This alteration results from a G to T substitution at nucleotide position 923, causing the glycine (G) at amino acid position 308 to be replaced by a valine (V). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.091

BayesDel_addAF

Uncertain

0.10

BayesDel_noAF

Benign

-0.090

CADD

Benign

DANN

Benign

0.97

Eigen

Benign

-1.1

Eigen_PC

Benign

-1.1

FATHMM_MKL

Benign

0.27

LIST_S2

Benign

0.29

T;T

M_CAP

Uncertain

0.093

MetaRNN

Benign

0.056

T;T

MetaSVM

Benign

-0.75

MutationTaster

Benign

1.0

N;N;N;N;N;N

PROVEAN

Benign

0.55

N;.

REVEL

Benign

0.26

Sift

Pathogenic

0.0

D;.

Sift4G

Uncertain

0.051

T;D

Vest4

0.14

MutPred

0.12

Gain of loop (P = 0.0435);.;

MVP

0.21

MPC

0.46

ClinPred

0.17

GERP RS

-3.0

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.1

gMVP

0.095

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.24

Details are displayed if max score is > 0.2

DS_AG_spliceai

0.24

Position offset: -11

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.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over