rs11648119

Positions:

• chr16-15720860-C-T

Variant summary

Our verdict is Benign. Variant got -21 ACMG points: 0P and 21B. BP4_Strong BP6_Very_Strong BP7 BS1 BS2

The NM_002474.3(MYH11):​c.4770G>A​(p.Lys1590Lys) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0179 in 1,613,842 control chromosomes in the GnomAD database, including 357 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★★).

• Frequency:
  • Genomes: 𝑓 0.013 (23 hom., cov: 31)
  • Exomes 𝑓: 0.018 (334 hom.)
• Consequence: MYH11 NM_002474.3 synonymous
• Clinical Significance: Benign/Likely benign criteria provided, multiple submitters, no conflicts B:16
• Conservation: PhyloP100: 2.80

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]

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]

MYH11 (HGNC:):

ACMG classification

Verdict is Benign. Variant got -21 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.49).
• BP6: Variant 16-15720860-C-T is Benign according to our data. Variant chr16-15720860-C-T is described in ClinVar as [Likely_benign]. Clinvar id is 36621.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars. Variant chr16-15720860-C-T is described in Lovd as [Benign].
• BP7: Synonymous conserved (PhyloP=2.8 with no splicing effect.
• BS1: Variant frequency is greater than expected in population nfe. gnomad4 allele frequency = 0.013 (1974/152260) while in subpopulation NFE AF= 0.0211 (1433/68018). AF 95% confidence interval is 0.0202. There are 23 homozygotes in gnomad4. There are 897 alleles in male gnomad4 subpopulation. Median coverage is 31. This position pass quality control queck.
• BS2: High Homozygotes in GnomAd4 at 23 AD,AR gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
MYH11	NM_002474.3	c.4770G>A	p.Lys1590Lys	synonymous_variant	33/41	ENST00000300036.6	NP_002465.1
MYH11	NM_001040113.2	c.4791G>A	p.Lys1597Lys	synonymous_variant	34/43	ENST00000452625.7	NP_001035202.1
NDE1	NM_017668.3	c.948-3331C>T		intron_variant		ENST00000396354.6	NP_060138.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
MYH11	ENST00000300036.6	c.4770G>A	p.Lys1590Lys	synonymous_variant	33/41	1	NM_002474.3	ENSP00000300036.5
MYH11	ENST00000452625.7	c.4791G>A	p.Lys1597Lys	synonymous_variant	34/43	1	NM_001040113.2	ENSP00000407821.2
NDE1	ENST00000396354.6	c.948-3331C>T		intron_variant		1	NM_017668.3	ENSP00000379642.1

Frequencies

GnomAD3 genomes AF: 0.0130 AC: 1975 AN: 152142 Hom.: 23 Cov.: 31

Gnomad AFR AF: 0.00410

Gnomad AMI AF: 0.00219

Gnomad AMR AF: 0.00550

Gnomad ASJ AF: 0.00375

Gnomad EAS AF: 0.00

Gnomad SAS AF: 0.00331

Gnomad FIN AF: 0.0225

Gnomad MID AF: 0.00316

Gnomad NFE AF: 0.0211

Gnomad OTH AF: 0.00813

GnomAD3 exomes AF: 0.0136 AC: 3424 AN: 251274 Hom.: 43 AF XY: 0.0137 AC XY: 1862 AN XY: 135822

Gnomad AFR exome AF: 0.00375

Gnomad AMR exome AF: 0.00411

Gnomad ASJ exome AF: 0.00556

Gnomad EAS exome AF: 0.00

Gnomad SAS exome AF: 0.00421

Gnomad FIN exome AF: 0.0272

Gnomad NFE exome AF: 0.0208

Gnomad OTH exome AF: 0.0134

GnomAD4 exome AF: 0.0184 AC: 26867 AN: 1461582 Hom.: 334 Cov.: 32 AF XY: 0.0179 AC XY: 13025 AN XY: 727092

Gnomad4 AFR exome AF: 0.00281

Gnomad4 AMR exome AF: 0.00425

Gnomad4 ASJ exome AF: 0.00605

Gnomad4 EAS exome AF: 0.0000252

Gnomad4 SAS exome AF: 0.00475

Gnomad4 FIN exome AF: 0.0276

Gnomad4 NFE exome AF: 0.0214

Gnomad4 OTH exome AF: 0.0128

GnomAD4 genome AF: 0.0130 AC: 1974 AN: 152260 Hom.: 23 Cov.: 31 AF XY: 0.0120 AC XY: 897 AN XY: 74452

Gnomad4 AFR AF: 0.00409

Gnomad4 AMR AF: 0.00543

Gnomad4 ASJ AF: 0.00375

Gnomad4 EAS AF: 0.00

Gnomad4 SAS AF: 0.00332

Gnomad4 FIN AF: 0.0225

Gnomad4 NFE AF: 0.0211

Gnomad4 OTH AF: 0.00805

Alfa AF: 0.0174 Hom.: 13

Bravo AF: 0.0109

Asia WGS AF: 0.00144 AC: 5 AN: 3478

EpiCase AF: 0.0183

EpiControl AF: 0.0168

ClinVar

Significance: Benign/Likely benign

Submissions summary: Benign:16

Revision: criteria provided, multiple submitters, no conflicts

Submissions by phenotype

not specified Benign:6

Benign, no assertion criteria provided	clinical testing	Clinical Genetics DNA and cytogenetics Diagnostics Lab, Erasmus MC, Erasmus Medical Center	-	- -
Benign, criteria provided, single submitter	clinical testing	Laboratory for Molecular Medicine, Mass General Brigham Personalized Medicine	Apr 04, 2013	Lys1597Lys in exon 34 of MYH11: This variant is not expected to have clinical si gnificance because it does not alter an amino acid residue and is not located wi thin the splice consensus sequence. It has been identified in 2.1% (177/8600) of European American chromosomes from a broad population by the NHLBI Exome Sequen cing Project (http://evs.gs.washington.edu/EVS; dbSNP rs11648119). -
Benign, no assertion criteria provided	clinical testing	Genome Diagnostics Laboratory, University Medical Center Utrecht	-	- -
Benign, criteria provided, single submitter	clinical testing	GeneDx	Nov 05, 2012	This variant is considered likely benign or benign based on one or more of the following criteria: it is a conservative change, it occurs at a poorly conserved position in the protein, it is predicted to be benign by multiple in silico algorithms, and/or has population frequency not consistent with disease. -
Benign, criteria provided, single submitter	clinical testing	PreventionGenetics, part of Exact Sciences	-	- -
Benign, no assertion criteria provided	clinical testing	Joint Genome Diagnostic Labs from Nijmegen and Maastricht, Radboudumc and MUMC+	-	- -

Familial thoracic aortic aneurysm and aortic dissection Benign:4

Benign, criteria provided, single submitter	clinical testing	All of Us Research Program, National Institutes of Health	Feb 05, 2024	- -
Benign, criteria provided, single submitter	clinical testing	Ambry Genetics	Sep 09, 2015	This alteration is classified as benign based on a combination of the following: seen in unaffected individuals, population frequency, intact protein function, lack of segregation with disease, co-occurrence, RNA analysis, in silico models, amino acid conservation, lack of disease association in case-control studies, and/or the mechanism of disease or impacted region is inconsistent with a known cause of pathogenicity. -
Likely benign, criteria provided, single submitter	clinical testing	Illumina Laboratory Services, Illumina	Jun 14, 2016	- -
Benign, criteria provided, single submitter	clinical testing	Color Diagnostics, LLC DBA Color Health	Mar 07, 2018	- -

Aortic aneurysm, familial thoracic 4 Benign:2

Benign, criteria provided, single submitter	clinical testing	Labcorp Genetics (formerly Invitae), Labcorp	Feb 01, 2024	- -
Likely benign, criteria provided, single submitter	clinical testing	Illumina Laboratory Services, Illumina	Jan 13, 2018	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 likely benign is not then subjected to further curation. The score for this variant resulted in a classification of likely benign for this disease. -

not provided Benign:2

Benign, criteria provided, single submitter	clinical testing	ARUP Laboratories, Molecular Genetics and Genomics, ARUP Laboratories	Nov 10, 2023	- -
Likely benign, criteria provided, single submitter	not provided	Breakthrough Genomics, Breakthrough Genomics	-	- -

Familial aortopathy Benign:1

Benign, criteria provided, single submitter

curation

Women's Health and Genetics/Laboratory Corporation of America, LabCorp

Aug 18, 2011

- -

Lissencephaly 4 Benign:1

Likely benign, criteria provided, single submitter

clinical testing

Illumina Laboratory Services, Illumina

Apr 27, 2017

This variant was observed as part of a predisposition screen in an ostensibly healthy population. A literature search was performed for the gene, cDNA change, and amino acid change (where applicable). No publications were found based on this search. Allele frequency data from public databases allowed determination this variant is unlikely to cause disease. Therefore, this variant is classified as likely benign. -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.49
CADD	Benign	7.1
DANN	Benign	0.69

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

LitVar

Other links and lift over

dbSNP: rs11648119; hg19: chr16-15814717; COSMIC: COSV55551003; COSMIC: COSV55551003;