chr16-15708830-G-A

Variant names:

Variant summary

Our verdict is Likely benign. The variant received -3 ACMG points: 0P and 3B. BP4_ModerateBS1_Supporting

The NM_001040113.2(MYH11):c.5819C>T(p.Pro1940Leu) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000286 in 1,605,916 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 14/18 in silico tools predict a benign outcome for this variant. 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. P1940A) has been classified as Likely benign.

Frequency

Genomes: 𝑓 0.000040 ( 0 hom., cov: 33)

Exomes 𝑓: 0.000028 ( 0 hom. )

Consequence

MYH11
NM_001040113.2 missense

Scores

Clinical Significance

Uncertain significance criteria provided, multiple submitters, no conflicts U:6

Conservation

PhyloP100: 1.54

Publications

6 publications found

Variant links:

Genes affected

MYH11 (HGNC:7569): (myosin heavy chain 11) The protein encoded by this gene is a smooth muscle myosin belonging to the myosin heavy chain family. The gene product is a subunit of a hexameric protein that consists of two heavy chain subunits and two pairs of non-identical light chain subunits. It functions as a major contractile protein, converting chemical energy into mechanical energy through the hydrolysis of ATP. A chromosomal rearrangement involving this gene is associated with acute myeloid leukemia of the M4Eo subtype. Mutations in this gene are associated with visceral myopathy, megacystis-microcolon-intestinal hypoperistalsis syndrome 2, and familial thoracic aortic aneurysm 4. [provided by RefSeq, May 2022]

MYH11 links:

NDE1 (HGNC:17619): (nudE neurodevelopment protein 1) This gene encodes a member of the nuclear distribution E (NudE) family of proteins. The encoded protein is localized at the centrosome and interacts with other centrosome components as part of a multiprotein complex that regulates dynein function. This protein plays an essential role in microtubule organization, mitosis and neuronal migration. Mutations in this gene cause lissencephaly 4, a disorder characterized by lissencephaly, severe brain atrophy, microcephaly, and severe cognitive disability. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Mar 2012]

NDE1 Gene-Disease associations (from GenCC):

lissencephaly 4
Inheritance: AR Classification: DEFINITIVE, STRONG, MODERATE Submitted by: PanelApp Australia, Ambry Genetics, G2P, Labcorp Genetics (formerly Invitae), Laboratory for Molecular Medicine
hydranencephaly
Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet
microlissencephaly
Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet
NDE1-related microhydranencephaly
Inheritance: Unknown, AR Classification: SUPPORTIVE, LIMITED Submitted by: Labcorp Genetics (formerly Invitae), Orphanet

NDE1 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Likely_benign. The variant received -3 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.1773485).

BS1

Variant frequency is greater than expected in population sas. GnomAdExome4 allele frequency = 0.0000275 (40/1454078) while in subpopulation SAS AF = 0.0000944 (8/84706). AF 95% confidence interval is 0.0000465. There are 0 homozygotes in GnomAdExome4. There are 22 alleles in the male GnomAdExome4 subpopulation. Median coverage is 32. This position passed quality control check. Existence of Clinvar submissions makes me limit the strength of this signal to Supporting

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
MYH11	NM_001040113.2 link	c.5819C>T	p.Pro1940Leu	missense_variant	Exon 42 of 43	ENST00000452625.7	NP_001035202.1	P35749-3
MYH11	NM_002474.3 link	c.5787-4707C>T		intron_variant	Intron 40 of 40	ENST00000300036.6	NP_002465.1	P35749-1A0A024QZJ4
NDE1	NM_017668.3 link	c.947+11970G>A		intron_variant	Intron 8 of 8	ENST00000396354.6	NP_060138.1	Q9NXR1-2X5DR54

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	UniProt
MYH11	ENST00000452625.7 link	c.5819C>T	p.Pro1940Leu	missense_variant	Exon 42 of 43	1	NM_001040113.2	ENSP00000407821.2	P35749-3
MYH11	ENST00000300036.6 link	c.5787-4707C>T		intron_variant	Intron 40 of 40	1	NM_002474.3	ENSP00000300036.5	P35749-1
NDE1	ENST00000396354.6 link	c.947+11970G>A		intron_variant	Intron 8 of 8	1	NM_017668.3	ENSP00000379642.1	Q9NXR1-2

Frequencies

GnomAD3 genomes

AF:

0.0000395

AC:

AN:

151720

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000242

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.0000658

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:

0.0000589

Gnomad OTH

AF:

0.00

GnomAD2 exomes

AF:

0.0000386

AC:

AN:

233460

AF XY:

0.0000317

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.0000925

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.000115

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000286

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000275

AC:

AN:

1454078

Hom.:

Cov.:

AF XY:

0.0000304

AC XY:

AN XY:

722616

show subpopulations

African (AFR)

AF:

0.0000300

AC:

AN:

33384

American (AMR)

AF:

0.0000685

AC:

AN:

43772

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

25906

East Asian (EAS)

AF:

0.0000253

AC:

AN:

39562

South Asian (SAS)

AF:

0.0000944

AC:

AN:

84706

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53002

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5740

European-Non Finnish (NFE)

AF:

0.0000217

AC:

AN:

1107850

Other (OTH)

AF:

0.0000499

AC:

AN:

60156

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.483

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:

0.0000395

AC:

AN:

151838

Hom.:

Cov.:

AF XY:

0.0000404

AC XY:

AN XY:

74236

show subpopulations

African (AFR)

AF:

0.0000241

AC:

AN:

41422

American (AMR)

AF:

0.0000658

AC:

AN:

15208

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3462

East Asian (EAS)

AF:

0.00

AC:

AN:

5178

South Asian (SAS)

AF:

0.00

AC:

AN:

4794

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10566

Middle Eastern (MID)

AF:

0.00

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.0000589

AC:

AN:

67904

Other (OTH)

AF:

0.00

AC:

AN:

2102

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.467

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:

0.00

Hom.:

Bravo

AF:

0.0000416

ExAC

AF:

0.0000330

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:6

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

Familial thoracic aortic aneurysm and aortic dissection

Uncertain:2

Aug 30, 2024

All of Us Research Program, National Institutes of Health

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

This missense variant replaces proline with leucine at codon 1940 of the MYH11 protein. Computational prediction suggests that this variant may not impact protein structure and function (internally defined REVEL score threshold <= 0.5, PMID: 27666373). Splice site prediction tools suggest that this variant may not impact RNA splicing. To our knowledge, functional studies have not been performed for this variant. This variant has not been reported in individuals affected with cardiovascular disorders in the literature. This variant has been identified in 9/233460 chromosomes in the general population by the Genome Aggregation Database (gnomAD). The available evidence is insufficient to determine the role of this variant in disease conclusively. Therefore, this variant is classified as a Variant of Uncertain Significance. -

Jun 20, 2024

Color Diagnostics, LLC DBA Color Health

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

This missense variant replaces proline with leucine at codon 1940 of the MYH11 protein. Computational prediction tools indicate that this variant has a neutral impact on protein structure and function. To our knowledge, functional studies have not been reported for this variant. This variant has not been reported in individuals affected with MYH11-related disorders in the literature. This variant has been identified in 9/233460 chromosomes in the general population by the Genome Aggregation Database (gnomAD). The available evidence is insufficient to determine the role of this variant in disease conclusively. Therefore, this variant is classified as a Variant of Uncertain Significance. -

not provided

Uncertain:2

Breakthrough Genomics, Breakthrough Genomics

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:not provided

- -

May 15, 2024

GeneDx

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

Reported using an alternate transcript of the gene; Has not been previously published as pathogenic or benign to our knowledge; In silico analysis indicates that this missense variant does not alter protein structure/function -

Aortic aneurysm, familial thoracic 4

Uncertain:1

Oct 31, 2024

Labcorp Genetics (formerly Invitae), Labcorp

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

This sequence change replaces proline, which is neutral and non-polar, with leucine, which is neutral and non-polar, at codon 1940 of the MYH11 protein (p.Pro1940Leu). This variant is present in population databases (rs111588143, gnomAD 0.01%). This variant has not been reported in the literature in individuals affected with MYH11-related conditions. ClinVar contains an entry for this variant (Variation ID: 201119). An algorithm developed to predict the effect of missense changes on protein structure and function (PolyPhen-2) suggests that this variant¬†is likely to be tolerated. 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. -

MYH11-related disorder

Uncertain:1

Aug 27, 2024

PreventionGenetics, part of Exact Sciences

Significance:Uncertain significance

Review Status:no assertion criteria provided

Collection Method:clinical testing

The MYH11 c.5819C>T variant is predicted to result in the amino acid substitution p.Pro1940Leu. To our knowledge, this variant has not been reported in the literature. This variant is reported in 0.012% of alleles in individuals of East Asian descent in gnomAD. At this time, the clinical significance of this variant is uncertain due to the absence of conclusive functional and genetic evidence. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.084

BayesDel_addAF

Benign

-0.21

BayesDel_noAF

Benign

-0.27

CADD

Benign

(source)

DANN

Benign

0.95

Eigen

Benign

-0.82

Eigen_PC

Benign

-0.64

FATHMM_MKL

Uncertain

0.76

LIST_S2

Benign

0.40

T;T

M_CAP

Uncertain

0.11

MetaRNN

Benign

0.18

T;T

MetaSVM

Benign

-0.66

PhyloP100

1.5

PROVEAN

Benign

0.85

N;.

REVEL

Benign

0.23

Sift

Benign

0.033

D;.

Sift4G

Benign

0.47

T;T

Vest4

0.42

MutPred

0.13

Gain of stability (P = 0.0386);.;

MVP

0.39

ClinPred

0.20

GERP RS

2.1

Mutation Taster

=98/2

polymorphism

(source)

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.030

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