16-46707739-C-T

Variant names:

Variant summary

Our verdict is Uncertain significance. Variant got 0 ACMG points: 2P and 2B. PM2BP4_Moderate

The NM_182493.3(MYLK3):c.2425G>A(p.Ala809Thr) variant causes a missense change. The variant allele was found at a frequency of 0.00000744 in 1,612,768 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 12/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.000013 ( 0 hom., cov: 32)

Exomes 𝑓: 0.0000068 ( 0 hom. )

Consequence

MYLK3
NM_182493.3 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 6.12

Variant links:

Genes affected

MYLK3 (HGNC:29826): (myosin light chain kinase 3) Phosphorylation of cardiac myosin heavy chains (see MYH7B, MIM 609928) and light chains (see MYL2, MIM 160781) by a kinase, such as MYLK3, potentiates the force and rate of cross-bridge recruitment in cardiac myocytes (Chan et al., 2008 [PubMed 18202317]).[supplied by OMIM, Jul 2008]

MYLK3 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 0 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.20257828).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
MYLK3	NM_182493.3 link	c.2425G>A	p.Ala809Thr	missense_variant	Exon 13 of 13	ENST00000394809.9	NP_872299.2	Q32MK0-3
MYLK3	NM_001308301.1 link	c.1402G>A	p.Ala468Thr	missense_variant	Exon 12 of 12		NP_001295230.1	Q32MK0-4

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	UniProt
MYLK3	ENST00000394809.9 link	c.2425G>A	p.Ala809Thr	missense_variant	Exon 13 of 13	1	NM_182493.3	ENSP00000378288.4	Q32MK0-3
MYLK3	ENST00000536476.5 link	c.1402G>A	p.Ala468Thr	missense_variant	Exon 12 of 12	2		ENSP00000439297.1	Q32MK0-4
MYLK3	ENST00000562104.1 link	n.515G>A		non_coding_transcript_exon_variant	Exon 4 of 4	4
MYLK3	ENST00000565182.5 link	n.509G>A		non_coding_transcript_exon_variant	Exon 3 of 3	4

Frequencies

GnomAD3 genomes

AF:

0.0000131

AC:

AN:

152122

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.000385

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.00

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000319

AC:

AN:

251072

Hom.:

AF XY:

0.0000368

AC XY:

AN XY:

135702

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.000435

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.00000685

AC:

AN:

1460646

Hom.:

Cov.:

AF XY:

0.00000550

AC XY:

AN XY:

726710

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.000252

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

AF:

0.0000131

AC:

AN:

152122

Hom.:

Cov.:

AF XY:

0.0000135

AC XY:

AN XY:

74304

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.000385

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.00

Gnomad4 OTH

AF:

0.00

Bravo

AF:

0.0000151

ExAC

AF:

0.0000412

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not provided

Uncertain:1

Sep 01, 2022

Labcorp Genetics (formerly Invitae), Labcorp

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

This sequence change replaces alanine, which is neutral and non-polar, with threonine, which is neutral and polar, at codon 809 of the MYLK3 protein (p.Ala809Thr). This variant is present in population databases (rs769993017, gnomAD 0.05%). This variant has not been reported in the literature in individuals affected with MYLK3-related conditions. ClinVar contains an entry for this variant (Variation ID: 1463005). Algorithms developed to predict the effect of missense changes on protein structure and function are either unavailable or do not agree on the potential impact of this missense change (SIFT: "Tolerated"; PolyPhen-2: "Probably Damaging"; Align-GVGD: "Class C0"). 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

0.22

BayesDel_addAF

Benign

-0.24

BayesDel_noAF

Benign

-0.25

CADD

Pathogenic

DANN

Uncertain

1.0

DEOGEN2

Benign

0.34

T;.

Eigen

Uncertain

0.61

Eigen_PC

Uncertain

0.64

FATHMM_MKL

Pathogenic

0.98

LIST_S2

Benign

0.81

T;T

M_CAP

Benign

0.062

MetaRNN

Benign

0.20

T;T

MetaSVM

Benign

-0.39

MutationAssessor

Benign

2.0

M;.

PrimateAI

Benign

0.46

PROVEAN

Benign

-1.6

N;N

REVEL

Benign

0.21

Sift

Uncertain

0.021

D;T

Sift4G

Uncertain

0.0070

D;D

Polyphen

0.92

P;.

Vest4

0.49

MutPred

0.41

Gain of disorder (P = 0.1681);.;

MVP

0.76

MPC

0.56

ClinPred

0.65

GERP RS

5.4

Varity_R

0.20

gMVP

0.29

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.020

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