rs727503306

Variant names:

Variant summary

Our verdict is Benign. The variant received -7 ACMG points: 0P and 7B. BP4_ModerateBP6BS2

The NM_033118.4(MYLK2):c.1694T>C(p.Met565Thr) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000585 in 1,606,716 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 14/22 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars).

Frequency

Genomes: 𝑓 0.000026 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000062 ( 0 hom. )

Consequence

MYLK2
NM_033118.4 missense

Scores

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:3B:1

Conservation

PhyloP100: 1.60

Publications

1 publications found

Variant links:

Genes affected

MYLK2 (HGNC:16243): (myosin light chain kinase 2) This gene encodes a myosin light chain kinase, a calcium/calmodulin dependent enzyme, that is exclusively expressed in adult skeletal muscle. [provided by RefSeq, Jul 2008]

MYLK2 Gene-Disease associations (from GenCC):

hypertrophic cardiomyopathy 1
Inheritance: AD Classification: LIMITED Submitted by: Ambry Genetics, Labcorp Genetics (formerly Invitae)
hypertrophic cardiomyopathy
Inheritance: AD Classification: NO_KNOWN Submitted by: ClinGen

MYLK2 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Benign. The variant received -7 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.102600634).

BP6

Variant 20-31832120-T-C is Benign according to our data. Variant chr20-31832120-T-C is described in ClinVar as Conflicting_classifications_of_pathogenicity. ClinVar VariationId is 164511.

BS2

High AC in GnomAdExome4 at 90 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
MYLK2	NM_033118.4 link	c.1694T>C	p.Met565Thr	missense_variant	Exon 12 of 13	ENST00000375985.5	NP_149109.1	Q9H1R3

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	UniProt
MYLK2	ENST00000375985.5 link	c.1694T>C	p.Met565Thr	missense_variant	Exon 12 of 13	1	NM_033118.4	ENSP00000365152.4	Q9H1R3
MYLK2	ENST00000375994.6 link	c.1694T>C	p.Met565Thr	missense_variant	Exon 11 of 12	1		ENSP00000365162.2	Q9H1R3
MYLK2	ENST00000468730.1 link	n.632T>C		non_coding_transcript_exon_variant	Exon 5 of 6	1

Frequencies

GnomAD3 genomes

AF:

0.0000264

AC:

AN:

151266

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000243

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000442

Gnomad OTH

AF:

0.00

GnomAD2 exomes

AF:

0.0000988

AC:

AN:

242894

AF XY:

0.000168

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000544

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000618

AC:

AN:

1455450

Hom.:

Cov.:

AF XY:

0.0000871

AC XY:

AN XY:

723490

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

33370

American (AMR)

AF:

0.00

AC:

AN:

44180

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

25904

East Asian (EAS)

AF:

0.00

AC:

AN:

39470

South Asian (SAS)

AF:

0.000577

AC:

AN:

84966

European-Finnish (FIN)

AF:

0.0000190

AC:

AN:

52516

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5756

European-Non Finnish (NFE)

AF:

0.0000361

AC:

AN:

1109158

Other (OTH)

AF:

0.00

AC:

AN:

60130

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.491

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

GnomAD4 genome

AF:

0.0000264

AC:

AN:

151266

Hom.:

Cov.:

AF XY:

0.0000271

AC XY:

AN XY:

73806

show subpopulations

African (AFR)

AF:

0.0000243

AC:

AN:

41098

American (AMR)

AF:

0.00

AC:

AN:

15230

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3464

East Asian (EAS)

AF:

0.00

AC:

AN:

5144

South Asian (SAS)

AF:

0.00

AC:

AN:

4802

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10430

Middle Eastern (MID)

AF:

0.00

AC:

AN:

316

European-Non Finnish (NFE)

AF:

0.0000442

AC:

AN:

67798

Other (OTH)

AF:

0.00

AC:

AN:

2078

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.525

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome Het

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

Alfa

AF:

0.0000580

Hom.:

Bravo

AF:

0.0000340

ExAC

AF:

0.000115

AC:

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Uncertain:3Benign:1

Revision: criteria provided, conflicting classifications

LINK: link

Submissions by phenotype

not specified

Uncertain:2

May 14, 2025

Ambry Genetics

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

The c.1694T>C (p.M565T) alteration is located in exon 12 (coding exon 11) of the MYLK2 gene. This alteration results from a T to C substitution at nucleotide position 1694, causing the methionine (M) at amino acid position 565 to be replaced by a threonine (T). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Oct 15, 2013

Laboratory for Molecular Medicine, Mass General Brigham Personalized Medicine

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

The Met565Thr variant in MYLK2 has been identified by our laboratory in 1 Caucas ian individual with DCM and data from large population studies is insufficient t o assess the frequency of this variant. Computational analyses (biochemical amin o acid properties, conservation, AlignGVGD, PolyPhen2, and SIFT) do not provide strong support for or against an impact to the protein. Additional information i s needed to fully assess the clinical significance of the Met565Thr variant. -

Cardiomyopathy

Uncertain:1

Oct 05, 2016

CHEO Genetics Diagnostic Laboratory, Children's Hospital of Eastern Ontario

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Hypertrophic cardiomyopathy 1

Benign:1

Feb 15, 2024

Labcorp Genetics (formerly Invitae), Labcorp

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Pathogenic

0.79

BayesDel_addAF

Benign

-0.30

BayesDel_noAF

Benign

-0.31

CADD

Benign

(source)

DANN

Uncertain

0.98

DEOGEN2

Benign

0.22

T;T

Eigen

Benign

-0.10

Eigen_PC

Benign

0.085

FATHMM_MKL

Uncertain

0.95

LIST_S2

Benign

0.65

.;T

M_CAP

Benign

0.031

MetaRNN

Benign

0.10

T;T

MetaSVM

Benign

-0.80

MutationAssessor

Benign

0.035

N;N

PhyloP100

1.6

PrimateAI

Pathogenic

0.80

PROVEAN

Benign

-0.31

N;N

REVEL

Benign

0.097

Sift

Benign

0.094

T;T

Sift4G

Benign

0.30

T;T

Polyphen

0.069

B;B

Vest4

0.52

MVP

0.61

MPC

0.39

ClinPred

0.092

GERP RS

5.1

Varity_R

0.10

gMVP

0.73

Mutation Taster

=91/9

polymorphism

(source)

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

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

Age Distribution

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over