15-57625843-G-A

Position:

chr15-57625843-G-A

Variant summary

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

The NM_001018100.5(MYZAP):c.476G>A(p.Arg159His) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000148 in 1,614,136 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 14/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.00031 ( 0 hom., cov: 32)

Exomes 𝑓: 0.00013 ( 0 hom. )

Consequence

MYZAP
NM_001018100.5 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 2.30

Variant links:

Genes affected

MYZAP (HGNC:43444): (myocardial zonula adherens protein) This gene encodes a protein that is abundantly expressed in cardiac tissue. The encoded protein localizes to intercalated discs in cardiomyocytes and functions as an activator of Rho-dependent serum-response factor signaling. Alternative splicing results in multiple transcript variants. Readthrough transcription also exists between this gene and the neighboring downstream gene POLR2M (polymerase (RNA) II (DNA directed) polypeptide M) and is represented with GeneID: 145781. [provided by RefSeq, Mar 2014]

MYZAP links:

GCOM1 (HGNC:26424): (GCOM1, MYZAP-POLR2M combined locus) This locus represents naturally occurring readthrough transcription between the neighboring MYZAP (myocardial zonula adherens protein) and POLR2M (polymerase (RNA) II (DNA directed) polypeptide M) genes on chromosome 15. Alternative splicing results in multiple readthrough transcript variants. Readthrough variants may encode proteins that share sequence identity with the upstream gene product or with both the upstream and downstream gene products. Some readthrough transcript variants are also expected to be candidates for nonsense-mediated decay (NMD). [provided by RefSeq, Oct 2013]

GCOM1 links:

GCOM1 (HGNC:):

GCOM1 links:

Genome browser will be placed here

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=0.061270297).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
MYZAP	NM_001018100.5 linkuse as main transcript	c.476G>A	p.Arg159His	missense_variant	5/13	ENST00000267853.10	NP_001018110.1	P0CAP1-1A0A024R5W4

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
MYZAP	ENST00000267853.10 linkuse as main transcript	c.476G>A	p.Arg159His	missense_variant	5/13	1	NM_001018100.5	ENSP00000267853.5		P0CAP1-1
GCOM1	ENST00000587652.5 linkuse as main transcript	c.476G>A	p.Arg159His	missense_variant	5/15	2		ENSP00000465231.1		H8Y6P7

Frequencies

GnomAD3 genomes

AF:

0.000309

AC:

AN:

152140

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000893

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000262

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.000193

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000735

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.000155

AC:

AN:

251292

Hom.:

AF XY:

0.000162

AC XY:

AN XY:

135806

show subpopulations

Gnomad AFR exome

AF:

0.000615

Gnomad AMR exome

AF:

0.0000289

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.000163

Gnomad SAS exome

AF:

0.0000653

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.000185

Gnomad OTH exome

AF:

0.000326

GnomAD4 exome

AF:

0.000131

AC:

192

AN:

1461878

Hom.:

Cov.:

AF XY:

0.000136

AC XY:

AN XY:

727244

show subpopulations

Gnomad4 AFR exome

AF:

0.000777

Gnomad4 AMR exome

AF:

0.000112

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.0000504

Gnomad4 SAS exome

AF:

0.0000464

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.000130

Gnomad4 OTH exome

AF:

0.000166

GnomAD4 genome

AF:

0.000309

AC:

AN:

152258

Hom.:

Cov.:

AF XY:

0.000349

AC XY:

AN XY:

74442

show subpopulations

Gnomad4 AFR

AF:

0.000891

Gnomad4 AMR

AF:

0.000262

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.000193

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000735

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.000105

Hom.:

Bravo

AF:

0.000370

ESP6500AA

AF:

0.000456

AC:

ESP6500EA

AF:

0.00

AC:

ExAC

AF:

0.000189

AC:

EpiCase

AF:

0.000109

EpiControl

AF:

0.0000593

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

Inborn genetic diseases

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Jul 30, 2024

The c.476G>A (p.R159H) alteration is located in exon 5 (coding exon 5) of the GCOM1 gene. This alteration results from a G to A substitution at nucleotide position 476, causing the arginine (R) at amino acid position 159 to be replaced by a histidine (H). 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

0.061

BayesDel_addAF

Benign

-0.51

BayesDel_noAF

Benign

-0.60

CADD

Benign

DANN

Uncertain

0.98

DEOGEN2

Benign

0.0044

.;.;.;.;T;.

Eigen

Benign

-0.61

Eigen_PC

Benign

-0.55

FATHMM_MKL

Benign

0.71

LIST_S2

Benign

0.12

T;T;.;T;T;T

M_CAP

Benign

0.0078

MetaRNN

Benign

0.061

T;T;T;T;T;T

MetaSVM

Benign

-1.1

MutationAssessor

Benign

0.0

.;.;.;.;N;N

PrimateAI

Benign

0.40

PROVEAN

Benign

-0.35

N;.;.;N;N;N

REVEL

Benign

0.091

Sift

Uncertain

0.017

D;.;.;D;D;D

Sift4G

Uncertain

0.019

D;D;.;D;D;D

Polyphen

0.63, 0.75

.;.;.;.;P;P

Vest4

0.11

MVP

0.17

MPC

0.078

ClinPred

0.017

GERP RS

3.9

Varity_R

0.029

gMVP

0.20

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.16

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