Genetic Variant MYOZ3:p.Arg182Leu (chr5-150672460-G-T) – ACMG Classification: Likely_benign (-2 pts)

Variant summary

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

The NM_001122853.3(MYOZ3):c.545G>T(p.Arg182Leu) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000138 in 1,452,520 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 16/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: not found (cov: 33)

Exomes 𝑓: 0.0000014 ( 0 hom. )

Consequence

MYOZ3
NM_001122853.3 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: -0.240

Variant links:

Genes affected

MYOZ3 (HGNC:18565): (myozenin 3) The protein encoded by this gene is specifically expressed in the skeletal muscle, and belongs to the myozenin family. Members of this family function as calcineurin-interacting proteins that help tether calcineurin to the sarcomere of cardiac and skeletal muscle. They play an important role in modulation of calcineurin signaling. [provided by RefSeq, Apr 2012]

MYOZ3 links:

MYOZ3-AS1 (HGNC:40846): (MYOZ3 antisense RNA 1)

MYOZ3-AS1 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=0.06651878).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
MYOZ3	NM_001122853.3 link	c.545G>T	p.Arg182Leu	missense_variant	Exon 6 of 7	ENST00000517768.6	NP_001116325.1	Q8TDC0-1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
MYOZ3	ENST00000517768.6 link	c.545G>T	p.Arg182Leu	missense_variant	Exon 6 of 7	1	NM_001122853.3	ENSP00000428815.1		Q8TDC0-1

Frequencies

GnomAD3 genomes

Cov.:

GnomAD4 exome

AF:

0.00000138

AC:

AN:

1452520

Hom.:

Cov.:

AF XY:

0.00000139

AC XY:

AN XY:

721498

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:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00000181

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

Cov.:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Feb 28, 2023

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.545G>T (p.R182L) alteration is located in exon 6 (coding exon 5) of the MYOZ3 gene. This alteration results from a G to T substitution at nucleotide position 545, causing the arginine (R) at amino acid position 182 to be replaced by a leucine (L). 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

0.086

BayesDel_addAF

Benign

-0.23

BayesDel_noAF

Benign

-0.57

CADD

Benign

6.0

DANN

Benign

0.85

DEOGEN2

Benign

0.0067

T;T;.

Eigen

Benign

-1.5

Eigen_PC

Benign

-1.5

FATHMM_MKL

Benign

0.067

LIST_S2

Benign

0.59

.;T;T

M_CAP

Benign

0.010

MetaRNN

Benign

0.067

T;T;T

MetaSVM

Benign

-1.0

MutationAssessor

Benign

0.29

N;N;.

PrimateAI

Benign

0.25

PROVEAN

Benign

0.24

N;N;N

REVEL

Benign

0.030

Sift

Benign

0.22

T;T;T

Sift4G

Benign

0.35

T;T;T

Polyphen

0.0060

B;B;.

Vest4

0.13

MutPred

0.56

Loss of methylation at R182 (P = 0.0214);Loss of methylation at R182 (P = 0.0214);.;

MVP

0.36

MPC

0.32

ClinPred

0.066

GERP RS

-2.5

Varity_R

0.067

gMVP

0.20

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

No publications associated with this variant yet.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over