Variant chr22-40411452-G-C details in Genebe, Genetics Data Aggregator

Variant summary

Our verdict is Likely benign. Variant got -2 ACMG points: 2P and 4B. PM2BP4_Strong

The NM_020831.6(MRTFA):c.3034C>G(p.Leu1012Val) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000692 in 1,445,538 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 12/19 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: not found (cov: 32)

Exomes 𝑓: 0.0000069 ( 0 hom. )

Consequence

MRTFA
NM_020831.6 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 2.27

Variant links:

Genes affected

MRTFA (HGNC:14334): (myocardin related transcription factor A) The protein encoded by this gene interacts with the transcription factor myocardin, a key regulator of smooth muscle cell differentiation. The encoded protein is predominantly nuclear and may help transduce signals from the cytoskeleton to the nucleus. This gene is involved in a specific translocation event that creates a fusion of this gene and the RNA-binding motif protein-15 gene. This translocation has been associated with acute megakaryocytic leukemia. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Sep 2013]

MRTFA links:

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ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.06723586).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
MRTFA	NM_020831.6 linkuse as main transcript	c.3034C>G	p.Leu1012Val	missense_variant	15/15	ENST00000355630.10

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
MRTFA	ENST00000355630.10 linkuse as main transcript	c.3034C>G	p.Leu1012Val	missense_variant	15/15	1	NM_020831.6

Frequencies

GnomAD3 genomes

Cov.:

GnomAD3 exomes

AF:

0.00000807

AC:

AN:

247894

Hom.:

AF XY:

0.00000747

AC XY:

AN XY:

133928

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.0000292

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.000166

GnomAD4 exome

AF:

0.00000692

AC:

AN:

1445538

Hom.:

Cov.:

AF XY:

0.00000559

AC XY:

AN XY:

715630

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.000181

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:

9.10e-7

Gnomad4 OTH exome

AF:

0.0000168

GnomAD4 genome

Cov.:

ExAC

AF:

0.0000165

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not provided

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

Dec 19, 2023

This sequence change replaces leucine, which is neutral and non-polar, with valine, which is neutral and non-polar, at codon 912 of the MKL1 protein (p.Leu912Val). This variant is present in population databases (rs781098796, gnomAD 0.006%). This variant has not been reported in the literature in individuals affected with MKL1-related conditions. ClinVar contains an entry for this variant (Variation ID: 1682912). An algorithm developed to predict the effect of missense changes on protein structure and function (PolyPhen-2) suggests that this variant is likely to be disruptive. In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.079

BayesDel_addAF

Benign

-0.28

BayesDel_noAF

Benign

-0.46

CADD

Benign

DANN

Uncertain

0.98

DEOGEN2

Benign

0.047

T;T;T;T;T;T

Eigen

Benign

-0.31

Eigen_PC

Benign

-0.076

FATHMM_MKL

Benign

0.57

LIST_S2

Uncertain

0.91

.;D;D;D;T;D

M_CAP

Benign

0.011

MetaRNN

Benign

0.067

T;T;T;T;T;T

MetaSVM

Benign

-1.0

MutationTaster

Benign

0.97

D;D;D;D

PrimateAI

Uncertain

0.52

PROVEAN

Benign

-0.35

N;.;N;N;.;.

REVEL

Benign

0.073

Sift

Benign

0.73

T;.;T;T;.;.

Sift4G

Benign

1.0

T;T;T;T;T;T

Polyphen

0.27

B;.;B;B;.;.

Vest4

0.34

MutPred

0.19

Loss of disorder (P = 0.1141);.;.;Loss of disorder (P = 0.1141);.;.;

MVP

0.19

MPC

0.31

ClinPred

0.31

GERP RS

4.8

Varity_R

0.075

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

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