NM_000432.4:c.4-14C>T

Variant names:

Variant summary

Our verdict is Benign. The variant received -20 ACMG points: 0P and 20B. BP4_StrongBP6_Very_StrongBA1

The NM_000432.4(MYL2):c.4-14C>T variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00722 in 1,610,280 control chromosomes in the GnomAD database, including 704 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Benign (★★).

Frequency

Genomes: 𝑓 0.038 ( 367 hom., cov: 32)

Exomes 𝑓: 0.0040 ( 337 hom. )

Consequence

MYL2
NM_000432.4 intron

Scores

Clinical Significance

Benign criteria provided, multiple submitters, no conflicts B:12

Conservation

PhyloP100: -0.820

Publications

0 publications found

Variant links:

Genes affected

MYL2 (HGNC:7583): (myosin light chain 2) This gene encodes a major sarcomeric protein in mammalian striated muscle. The encoded protein plays a role in embryonic heart muscle structure and function, while phosphorylation of the encoded protein is involved in cardiac myosin cycling kinetics, torsion and function in adults. Mutations in this gene are associated with hypertrophic cardiomyopathy 10 and infant-onset myopathy. [provided by RefSeq, May 2022]

MYL2 Gene-Disease associations (from GenCC):

hypertrophic cardiomyopathy
Inheritance: AD Classification: DEFINITIVE Submitted by: ClinGen
hypertrophic cardiomyopathy 10
Inheritance: AD Classification: DEFINITIVE, STRONG Submitted by: ClinGen, G2P, PanelApp Australia, Labcorp Genetics (formerly Invitae)
myopathy, myofibrillar, 12, infantile-onset, with cardiomyopathy
Inheritance: AR Classification: MODERATE Submitted by: Ambry Genetics
congenital fiber-type disproportion myopathy
Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
dilated cardiomyopathy
Inheritance: AD Classification: LIMITED Submitted by: ClinGen
arrhythmogenic right ventricular cardiomyopathy
Inheritance: AD Classification: NO_KNOWN Submitted by: ClinGen

MYL2 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Benign. The variant received -20 ACMG points.

BP4

Computational evidence support a benign effect (BayesDel_noAF=-0.85).

BP6

Variant 12-110919207-G-A is Benign according to our data. Variant chr12-110919207-G-A is described in ClinVar as Benign. ClinVar VariationId is 43474.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

BA1

GnomAd4 highest subpopulation (AFR) allele frequency at 95% confidence interval = 0.132 is higher than 0.05.

Transcripts

RefSeq

Gene	Transcript	HGVSc	Effect	Exon rank	MANE	Protein	UniProt
MYL2	NM_000432.4 link	c.4-14C>T	intron_variant	Intron 1 of 6	ENST00000228841.15	NP_000423.2	P10916Q6IB42
MYL2	NM_001406745.1 link	c.4-14C>T	intron_variant	Intron 1 of 5		NP_001393674.1
MYL2	NM_001406916.1 link	c.-54-14C>T	intron_variant	Intron 1 of 6		NP_001393845.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
MYL2	ENST00000228841.15 link	c.4-14C>T		intron_variant	Intron 1 of 6	1	NM_000432.4	ENSP00000228841.8		P10916

Frequencies

GnomAD3 genomes

AF:

0.0383

AC:

5812

AN:

151830

Hom.:

364

Cov.:

show subpopulations

Gnomad AFR

AF:

0.134

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.0134

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.000415

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00633

Gnomad NFE

AF:

0.000397

Gnomad OTH

AF:

0.0221

GnomAD2 exomes

AF:

0.00999

AC:

2495

AN:

249696

AF XY:

0.00734

show subpopulations

Gnomad AFR exome

AF:

0.135

Gnomad AMR exome

AF:

0.00744

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.000416

Gnomad OTH exome

AF:

0.00426

GnomAD4 exome

AF:

0.00397

AC:

5794

AN:

1458332

Hom.:

337

Cov.:

AF XY:

0.00344

AC XY:

2497

AN XY:

725512

show subpopulations

African (AFR)

AF:

0.140

AC:

4647

AN:

33182

American (AMR)

AF:

0.00813

AC:

363

AN:

44634

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26072

East Asian (EAS)

AF:

0.00

AC:

AN:

39686

South Asian (SAS)

AF:

0.000209

AC:

AN:

86018

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53368

Middle Eastern (MID)

AF:

0.00503

AC:

AN:

4974

European-Non Finnish (NFE)

AF:

0.000182

AC:

202

AN:

1110200

Other (OTH)

AF:

0.00895

AC:

539

AN:

60198

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.507

Heterozygous variant carriers

269

538

806

1075

1344

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Exome Hom

Variant carriers

150

300

450

600

750

<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:

0.0384

AC:

5834

AN:

151948

Hom.:

367

Cov.:

AF XY:

0.0371

AC XY:

2756

AN XY:

74280

show subpopulations

African (AFR)

AF:

0.135

AC:

5553

AN:

41256

American (AMR)

AF:

0.0134

AC:

205

AN:

15274

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3472

East Asian (EAS)

AF:

0.00

AC:

AN:

5188

South Asian (SAS)

AF:

0.000208

AC:

AN:

4818

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10610

Middle Eastern (MID)

AF:

0.00680

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.000397

AC:

AN:

68018

Other (OTH)

AF:

0.0218

AC:

AN:

2106

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.497

Heterozygous variant carriers

256

512

768

1024

1280

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome Het

Genome Hom

Variant carriers

128

192

256

320

<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:

0.00642

Hom.:

Bravo

AF:

0.0450

Asia WGS

AF:

0.00837

AC:

AN:

3478

ClinVar

Significance: Benign

Submissions summary: Benign:12

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

not specified

Benign:4

Joint Genome Diagnostic Labs from Nijmegen and Maastricht, Radboudumc and MUMC+

Significance:Benign

Review Status:no assertion criteria provided

Collection Method:clinical testing

- -

Clinical Genetics, Academic Medical Center

Significance:Benign

Review Status:no assertion criteria provided

Collection Method:clinical testing

- -

Sep 23, 2011

Laboratory for Molecular Medicine, Mass General Brigham Personalized Medicine

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

PreventionGenetics, part of Exact Sciences

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Hypertrophic cardiomyopathy 10

Benign:4

May 31, 2017

Clinical Genetics DNA and cytogenetics Diagnostics Lab, Erasmus MC, Erasmus Medical Center

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Oct 09, 2014

Genome Diagnostics Laboratory, University Medical Center Utrecht

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Feb 04, 2025

Labcorp Genetics (formerly Invitae), Labcorp

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Jan 13, 2018

Illumina Laboratory Services, Illumina

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

This variant was observed in the ICSL laboratory as part of a predisposition screen in an ostensibly healthy population. It had not been previously curated by ICSL or reported in the Human Gene Mutation Database (HGMD: prior to June 1st, 2018), and was therefore a candidate for classification through an automated scoring system. Utilizing variant allele frequency, disease prevalence and penetrance estimates, and inheritance mode, an automated score was calculated to assess if this variant is too frequent to cause the disease. Based on the score and internal cut-off values, a variant classified as benign is not then subjected to further curation. The score for this variant resulted in a classification of benign for this disease. -

not provided

Benign:2

Breakthrough Genomics, Breakthrough Genomics

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:not provided

- -

Mar 03, 2015

GeneDx

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Cardiomyopathy

Benign:1

Apr 02, 2018

Color Diagnostics, LLC DBA Color Health

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Congestive heart failure

Benign:1

Oct 10, 2022

Cohesion Phenomics

Significance:Benign

Review Status:no assertion criteria provided

Collection Method:clinical testing

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.85

CADD

Benign

1.7

(source)

DANN

Benign

0.70

PhyloP100

-0.82

Mutation Taster

=100/0

polymorphism (auto)

(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