chr16-15717166-C-T

Variant names:

• chr16-15717166-C-T
• rs1050163
• NM_002474.3:c.5478G>A

Variant summary

Our verdict is Benign. The variant received -19 ACMG points: 0P and 19B. BP4_Moderate BP6_Very_Strong BP7 BA1

The NM_002474.3(MYH11):​c.5478G>A​(p.Leu1826Leu) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.483 in 1,613,846 control chromosomes in the GnomAD database, including 191,592 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★★).

• Frequency:
  • Genomes: 𝑓 0.44 (15757 hom., cov: 33)
  • Exomes 𝑓: 0.49 (175835 hom.)
• Consequence: MYH11 NM_002474.3 synonymous
• Clinical Significance: Benign/Likely benign criteria provided, multiple submitters, no conflicts B:22
• Conservation: PhyloP100: 1.43
• Publications: 22 publications found

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]

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

ACMG classification

Our verdict: Benign. The variant received -19 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.45).
• BP6: Variant 16-15717166-C-T is Benign according to our data. Variant chr16-15717166-C-T is described in ClinVar as Benign/Likely_benign. ClinVar VariationId is 138354.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.
• BP7: Synonymous conserved (PhyloP=1.43 with no splicing effect.
• BA1: GnomAd4 highest subpopulation (AMR) allele frequency at 95% confidence interval = 0.512 is higher than 0.05.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
MYH11	NM_002474.3	c.5478G>A	p.Leu1826Leu	synonymous_variant	Exon 38 of 41	ENST00000300036.6	NP_002465.1
MYH11	NM_001040113.2	c.5499G>A	p.Leu1833Leu	synonymous_variant	Exon 39 of 43	ENST00000452625.7	NP_001035202.1
NDE1	NM_017668.3	c.948-7025C>T		intron_variant	Intron 8 of 8	ENST00000396354.6	NP_060138.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
MYH11	ENST00000300036.6	c.5478G>A	p.Leu1826Leu	synonymous_variant	Exon 38 of 41	1	NM_002474.3	ENSP00000300036.5
MYH11	ENST00000452625.7	c.5499G>A	p.Leu1833Leu	synonymous_variant	Exon 39 of 43	1	NM_001040113.2	ENSP00000407821.2
NDE1	ENST00000396354.6	c.948-7025C>T		intron_variant	Intron 8 of 8	1	NM_017668.3	ENSP00000379642.1

Frequencies

GnomAD3 genomes AF: 0.444 AC: 67411 AN: 151968 Hom.: 15752 Cov.: 33

Gnomad AFR AF: 0.298

Gnomad AMI AF: 0.588

Gnomad AMR AF: 0.522

Gnomad ASJ AF: 0.571

Gnomad EAS AF: 0.317

Gnomad SAS AF: 0.455

Gnomad FIN AF: 0.533

Gnomad MID AF: 0.563

Gnomad NFE AF: 0.500

Gnomad OTH AF: 0.459

GnomAD2 exomes AF: 0.485 AC: 121786 AN: 251204 AF XY: 0.487

Gnomad AFR exome AF: 0.292

Gnomad AMR exome AF: 0.566

Gnomad ASJ exome AF: 0.561

Gnomad EAS exome AF: 0.306

Gnomad FIN exome AF: 0.520

Gnomad NFE exome AF: 0.505

Gnomad OTH exome AF: 0.514

GnomAD4 exome AF: 0.487 AC: 712259 AN: 1461760 Hom.: 175835 Cov.: 67 AF XY: 0.487 AC XY: 354228 AN XY: 727192

African (AFR) AF: 0.297 AC: 9940 AN: 33478

American (AMR) AF: 0.563 AC: 25189 AN: 44724

Ashkenazi Jewish (ASJ) AF: 0.560 AC: 14647 AN: 26134

East Asian (EAS) AF: 0.319 AC: 12682 AN: 39700

South Asian (SAS) AF: 0.470 AC: 40574 AN: 86256

European-Finnish (FIN) AF: 0.527 AC: 28120 AN: 53400

Middle Eastern (MID) AF: 0.591 AC: 3411 AN: 5768

European-Non Finnish (NFE) AF: 0.494 AC: 549022 AN: 1111910

Other (OTH) AF: 0.475 AC: 28674 AN: 60390

GnomAD4 genome AF: 0.443 AC: 67441 AN: 152086 Hom.: 15757 Cov.: 33 AF XY: 0.447 AC XY: 33206 AN XY: 74354

African (AFR) AF: 0.298 AC: 12352 AN: 41504

American (AMR) AF: 0.522 AC: 7971 AN: 15274

Ashkenazi Jewish (ASJ) AF: 0.571 AC: 1980 AN: 3466

East Asian (EAS) AF: 0.317 AC: 1637 AN: 5158

South Asian (SAS) AF: 0.455 AC: 2198 AN: 4826

European-Finnish (FIN) AF: 0.533 AC: 5629 AN: 10566

Middle Eastern (MID) AF: 0.568 AC: 167 AN: 294

European-Non Finnish (NFE) AF: 0.500 AC: 34011 AN: 67976

Other (OTH) AF: 0.455 AC: 961 AN: 2112

Alfa AF: 0.490 Hom.: 42102

Bravo AF: 0.438

Asia WGS AF: 0.370 AC: 1287 AN: 3478

EpiCase AF: 0.510

EpiControl AF: 0.511

ClinVar

Significance: Benign/Likely benign

Submissions summary: Benign:22

Revision: criteria provided, multiple submitters, no conflicts

Submissions by phenotype

not specified Benign:6

Apr 09, 2025

Molecular Diagnostic Laboratory for Inherited Cardiovascular Disease, Montreal Heart Institute

Significance: Benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

-

Genetic Services Laboratory, University of Chicago

Significance: Likely benign

Review Status: no assertion criteria provided

Collection Method: clinical testing

- -

Apr 04, 2013

Laboratory for Molecular Medicine, Mass General Brigham Personalized Medicine

Significance: Benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

Leu1833Leu in exon 39 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 49.3% (4239/8600) of European American chromosomes from a broad population by the NHLBI Exome Sequ encing Project (http://evs.gs.washington.edu/EVS; dbSNP rs1050163). -

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PreventionGenetics, part of Exact Sciences

Significance: Benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

-

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

Significance: Benign

Review Status: no assertion criteria provided

Collection Method: clinical testing

- -

Nov 02, 2012

GeneDx

Significance: Benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

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. -

Aortic aneurysm, familial thoracic 4 Benign:6

Sep 05, 2021

Genome-Nilou Lab

Significance: Benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Nov 19, 2014

Genome Diagnostics Laboratory, Amsterdam University Medical Center

Significance: Benign

Review Status: no assertion criteria provided

Collection Method: clinical testing

- -

Jun 28, 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

- -

Feb 04, 2025

Labcorp Genetics (formerly Invitae), Labcorp

Significance: Benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

-

Diagnostic Laboratory, Department of Genetics, University Medical Center Groningen

Significance: Benign

Review Status: no assertion criteria provided

Collection Method: clinical testing

- -

Jan 12, 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. -

Familial thoracic aortic aneurysm and aortic dissection Benign:4

Mar 07, 2018

Color Diagnostics, LLC DBA Color Health

Significance: Benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Jun 14, 2016

Illumina Laboratory Services, Illumina

Significance: Likely benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Jun 19, 2015

Ambry Genetics

Significance: Benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

General population or subpopulation frequency is too high to be a pathogenic mutation based on disease/syndrome prevalence and penetrance -

Oct 03, 2024

All of Us Research Program, National Institutes of Health

Significance: Benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

not provided Benign:2

Nov 27, 2024

ARUP Laboratories, Molecular Genetics and Genomics, ARUP Laboratories

Significance: Benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

-

Breakthrough Genomics, Breakthrough Genomics

Significance: Likely benign

Review Status: criteria provided, single submitter

Collection Method: not provided

- -

Visceral myopathy 2 Benign:1

Sep 05, 2021

Genome-Nilou Lab

Significance: Benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Megacystis-microcolon-intestinal hypoperistalsis syndrome 2 Benign:1

Sep 05, 2021

Genome-Nilou Lab

Significance: Benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Lissencephaly 4 Benign:1

Apr 27, 2017

Illumina Laboratory Services, Illumina

Significance: Benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

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 was too high to be consistent with this variant causing disease. Therefore, this variant is classified as benign. -

Cardiovascular phenotype Benign:1

Nov 19, 2014

Ambry Genetics

Significance: Benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

This alteration is classified as benign based on a combination of the following: 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. -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.45
CADD	Benign	7.6
DANN	Benign	0.89
PhyloP100		1.4
Mutation Taster		=99/1	polymorphism (auto)

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

Other links and lift over

dbSNP: rs1050163; hg19: chr16-15811023; COSMIC: COSV55543481; COSMIC: COSV55543481;