3-123752478-C-T

Variant names:

Variant summary

Our verdict is Uncertain significance. The variant received 0 ACMG points: 0P and 0B.

The NM_053025.4(MYLK):c.226G>A(p.Gly76Arg) variant causes a missense change. The variant allele was found at a frequency of 0.0000849 in 1,614,052 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Uncertain significance (★★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. G76V) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.000033 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000090 ( 0 hom. )

Consequence

MYLK
NM_053025.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, multiple submitters, no conflicts U:7

Conservation

PhyloP100: 6.63

Publications

2 publications found

Variant links:

Genes affected

MYLK (HGNC:7590): (myosin light chain kinase) This gene, a muscle member of the immunoglobulin gene superfamily, encodes myosin light chain kinase which is a calcium/calmodulin dependent enzyme. This kinase phosphorylates myosin regulatory light chains to facilitate myosin interaction with actin filaments to produce contractile activity. This gene encodes both smooth muscle and nonmuscle isoforms. In addition, using a separate promoter in an intron in the 3' region, it encodes telokin, a small protein identical in sequence to the C-terminus of myosin light chain kinase, that is independently expressed in smooth muscle and functions to stabilize unphosphorylated myosin filaments. A pseudogene is located on the p arm of chromosome 3. Four transcript variants that produce four isoforms of the calcium/calmodulin dependent enzyme have been identified as well as two transcripts that produce two isoforms of telokin. Additional variants have been identified but lack full length transcripts. [provided by RefSeq, Jul 2008]

MYLK Gene-Disease associations (from GenCC):

aortic aneurysm, familial thoracic 7
Inheritance: AD Classification: STRONG, MODERATE Submitted by: Labcorp Genetics (formerly Invitae), Ambry Genetics
megacystis-microcolon-intestinal hypoperistalsis syndrome 1
Inheritance: AR Classification: STRONG Submitted by: G2P
familial thoracic aortic aneurysm and aortic dissection
Inheritance: Unknown, AD Classification: STRONG, SUPPORTIVE Submitted by: ClinGen, Orphanet
connective tissue disorder
Inheritance: AD Classification: MODERATE Submitted by: Genomics England PanelApp
megacystis-microcolon-intestinal hypoperistalsis syndrome
Inheritance: AD, AR Classification: SUPPORTIVE, LIMITED Submitted by: Orphanet, Ambry Genetics

MYLK links:

ENSG00000304368 (HGNC:):

ENSG00000304368 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 0 ACMG points.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_053025.4. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein
MYLK	NM_053025.4	MANE Select	c.226G>A	p.Gly76Arg	missense	Exon 5 of 34	NP_444253.3
MYLK	NM_053027.4		c.226G>A	p.Gly76Arg	missense	Exon 5 of 33	NP_444255.3
MYLK	NM_053026.4		c.226G>A	p.Gly76Arg	missense	Exon 5 of 33	NP_444254.3

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
MYLK	ENST00000360304.8	TSL:5 MANE Select	c.226G>A	p.Gly76Arg	missense	Exon 5 of 34	ENSP00000353452.3	Q15746-1
MYLK	ENST00000464489.5	TSL:1	n.166-12477G>A		intron	N/A	ENSP00000417798.1	F8WBL7
MYLK	ENST00000687848.1		c.256G>A	p.Gly86Arg	missense	Exon 3 of 32	ENSP00000508761.1	A0A8I5KU53

Frequencies

GnomAD3 genomes

AF:

0.0000328

AC:

AN:

152220

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:

0.00

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

GnomAD2 exomes

AF:

0.0000398

AC:

AN:

251016

AF XY:

0.0000442

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.0000289

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000705

Gnomad OTH exome

AF:

0.000163

GnomAD4 exome

AF:

0.0000903

AC:

132

AN:

1461832

Hom.:

Cov.:

AF XY:

0.0000825

AC XY:

AN XY:

727216

show subpopulations

African (AFR)

AF:

0.0000299

AC:

AN:

33480

American (AMR)

AF:

0.0000224

AC:

AN:

44724

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26136

East Asian (EAS)

AF:

0.0000252

AC:

AN:

39692

South Asian (SAS)

AF:

0.00

AC:

AN:

86254

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53406

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5746

European-Non Finnish (NFE)

AF:

0.000110

AC:

122

AN:

1112004

Other (OTH)

AF:

0.000116

AC:

AN:

60390

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.469

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:

0.0000328

AC:

AN:

152220

Hom.:

Cov.:

AF XY:

0.0000134

AC XY:

AN XY:

74364

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

41456

American (AMR)

AF:

0.00

AC:

AN:

15290

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3470

East Asian (EAS)

AF:

0.00

AC:

AN:

5190

South Asian (SAS)

AF:

0.00

AC:

AN:

4832

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10626

Middle Eastern (MID)

AF:

0.00

AC:

AN:

316

European-Non Finnish (NFE)

AF:

0.0000735

AC:

AN:

68038

Other (OTH)

AF:

0.00

AC:

AN:

2090

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.465

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:

0.0000849

Hom.:

Bravo

AF:

0.0000340

TwinsUK

AF:

0.00

AC:

ALSPAC

AF:

0.000259

AC:

ESP6500AA

AF:

0.00

AC:

ESP6500EA

AF:

0.000116

AC:

ExAC

AF:

0.0000412

AC:

EpiCase

AF:

0.0000545

EpiControl

AF:

0.00

ClinVar

ClinVar submissions

Significance:Uncertain significance

Revision:criteria provided, multiple submitters, no conflicts

View on ClinVar

Pathogenic

VUS

Benign

Condition

Aortic aneurysm, familial thoracic 7 (2)

Familial thoracic aortic aneurysm and aortic dissection (2)

not provided (2)

MYLK-related disorder (1)

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Uncertain

0.48

BayesDel_addAF

Benign

-0.21

BayesDel_noAF

Benign

-0.36

CADD

Pathogenic

(source)

DANN

Pathogenic

1.0

DEOGEN2

Benign

0.25

Eigen

Uncertain

0.37

Eigen_PC

Uncertain

0.31

FATHMM_MKL

Pathogenic

0.97

LIST_S2

Uncertain

0.91

M_CAP

Benign

0.029

MetaRNN

Uncertain

0.74

MetaSVM

Benign

-0.89

MutationAssessor

Benign

1.4

PhyloP100

6.6

PrimateAI

Uncertain

0.52

PROVEAN

Benign

-1.4

REVEL

Benign

0.26

Sift

Uncertain

0.0090

Sift4G

Pathogenic

0.0

Polyphen

0.88

Vest4

0.81

MutPred

0.69

Gain of MoRF binding (P = 0.0229)

MVP

0.71

MPC

0.20

ClinPred

0.22

GERP RS

4.5

Varity_R

0.14

gMVP

0.52

Mutation Taster

=70/30

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

You must be logged in to view publications. This limit was set because tens of millions (!) of queries from AI bots are generated daily.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Variant Effect in Transcripts

RefSeq Transcripts

Ensembl Transcripts

Frequencies

Age Distribution

Age Distribution

ClinVar

Computational scores

Splicing

Publications

Other links and lift over