chr16-15715211-G-A

Position:

• chr16-15715211-G-A

Variant summary

Our verdict is Benign. Variant got -14 ACMG points: 0P and 14B. BP4_Strong BP6 BP7 BS1 BS2

The NM_002474.3(MYH11):​c.5566C>T​(p.Leu1856=) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00228 in 1,613,992 control chromosomes in the GnomAD database, including 4 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars).

• Frequency:
  • Genomes: 𝑓 0.0014 (0 hom., cov: 32)
  • Exomes 𝑓: 0.0024 (4 hom.)
• Consequence: MYH11 NM_002474.3 synonymous
• Clinical Significance: Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:3 B:12
• Conservation: PhyloP100: 1.01

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]

ACMG classification

Verdict is Benign. Variant got -14 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.52).
• BP6: Variant 16-15715211-G-A is Benign according to our data. Variant chr16-15715211-G-A is described in ClinVar as [Conflicting_classifications_of_pathogenicity]. Clinvar id is 138357.We mark this variant Likely_benign, oryginal submissions are: {Likely_benign=4, Benign=6, Uncertain_significance=3}. Variant chr16-15715211-G-A is described in Lovd as [Likely_benign].
• BP7: Synonymous conserved (PhyloP=1.01 with no splicing effect.
• BS1: Variant frequency is greater than expected in population nfe. gnomad4 allele frequency = 0.00141 (214/152176) while in subpopulation NFE AF= 0.00263 (179/68034). AF 95% confidence interval is 0.00232. There are 0 homozygotes in gnomad4. There are 95 alleles in male gnomad4 subpopulation. Median coverage is 32. This position pass quality control queck.
• BS2: High Homozygotes in GnomAdExome4 at 4 AD,AR gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
MYH11	NM_002474.3	c.5566C>T	p.Leu1856=	synonymous_variant	39/41	ENST00000300036.6	NP_002465.1
MYH11	NM_001040113.2	c.5587C>T	p.Leu1863=	synonymous_variant	40/43	ENST00000452625.7	NP_001035202.1
NDE1	NM_017668.3	c.948-8980G>A		intron_variant		ENST00000396354.6	NP_060138.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
MYH11	ENST00000300036.6	c.5566C>T	p.Leu1856=	synonymous_variant	39/41	1	NM_002474.3	ENSP00000300036	P3
MYH11	ENST00000452625.7	c.5587C>T	p.Leu1863=	synonymous_variant	40/43	1	NM_001040113.2	ENSP00000407821
NDE1	ENST00000396354.6	c.948-8980G>A		intron_variant		1	NM_017668.3	ENSP00000379642	P1

Frequencies

GnomAD3 genomes AF: 0.00141 AC: 214 AN: 152176 Hom.: 0 Cov.: 32

Gnomad AFR AF: 0.000531

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.000262

Gnomad ASJ AF: 0.00

Gnomad EAS AF: 0.00

Gnomad SAS AF: 0.00

Gnomad FIN AF: 0.000565

Gnomad MID AF: 0.00

Gnomad NFE AF: 0.00263

Gnomad OTH AF: 0.00144

GnomAD3 exomes AF: 0.00131 AC: 329 AN: 251416 Hom.: 1 AF XY: 0.00113 AC XY: 153 AN XY: 135900

Gnomad AFR exome AF: 0.000246

Gnomad AMR exome AF: 0.000434

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.0000544

Gnomad SAS exome AF: 0.0000327

Gnomad FIN exome AF: 0.000463

Gnomad NFE exome AF: 0.00254

Gnomad OTH exome AF: 0.00147

GnomAD4 exome AF: 0.00238 AC: 3472 AN: 1461816 Hom.: 4 Cov.: 34 AF XY: 0.00225 AC XY: 1635 AN XY: 727222

Gnomad4 AFR exome AF: 0.000239

Gnomad4 AMR exome AF: 0.000380

Gnomad4 ASJ exome AF: 0.0000765

Gnomad4 EAS exome AF: 0.0000252

Gnomad4 SAS exome AF: 0.0000696

Gnomad4 FIN exome AF: 0.000506

Gnomad4 NFE exome AF: 0.00298

Gnomad4 OTH exome AF: 0.00161

GnomAD4 genome AF: 0.00141 AC: 214 AN: 152176 Hom.: 0 Cov.: 32 AF XY: 0.00128 AC XY: 95 AN XY: 74344

Gnomad4 AFR AF: 0.000531

Gnomad4 AMR AF: 0.000262

Gnomad4 ASJ AF: 0.00

Gnomad4 EAS AF: 0.00

Gnomad4 SAS AF: 0.00

Gnomad4 FIN AF: 0.000565

Gnomad4 NFE AF: 0.00263

Gnomad4 OTH AF: 0.00144

Alfa AF: 0.00224 Hom.: 1

Bravo AF: 0.00151

EpiCase AF: 0.00213

EpiControl AF: 0.00207

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Uncertain:3 Benign:12

Revision: criteria provided, conflicting classifications

Submissions by phenotype

Familial thoracic aortic aneurysm and aortic dissection Uncertain:1 Benign:3

Uncertain significance, criteria provided, single submitter	clinical testing	Illumina Laboratory Services, Illumina	Jun 14, 2016	- -
Likely benign, criteria provided, single submitter	clinical testing	Ambry Genetics	Mar 04, 2015	This alteration is classified as likely 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. -
Benign, criteria provided, single submitter	clinical testing	Color Diagnostics, LLC DBA Color Health	Mar 07, 2018	- -
Benign, criteria provided, single submitter	clinical testing	CHEO Genetics Diagnostic Laboratory, Children's Hospital of Eastern Ontario	Aug 16, 2016	- -

Aortic aneurysm, familial thoracic 4 Uncertain:1 Benign:3

Uncertain significance, criteria provided, single submitter	clinical testing	Illumina Laboratory Services, Illumina	Jan 12, 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, this variant could not be ruled out of causing disease and therefore its association with disease required further investigation. A literature search was performed for the gene, cDNA change, and amino acid change (if applicable). No publications were found based on this search. This variant was therefore classified as a variant of unknown significance for this disease. -
Benign, criteria provided, single submitter	clinical testing	Labcorp Genetics (formerly Invitae), Labcorp	Jan 31, 2024	- -
Likely benign, no assertion criteria provided	clinical testing	Genome Diagnostics Laboratory, Amsterdam University Medical Center	Nov 19, 2014	- -
Likely benign, criteria provided, single submitter	clinical testing	Clinical Genetics DNA and cytogenetics Diagnostics Lab, Erasmus MC, Erasmus Medical Center	Jun 28, 2017	- -

not provided Benign:3

Likely benign, criteria provided, single submitter	clinical testing	CeGaT Center for Human Genetics Tuebingen	Aug 01, 2024	MYH11: BP4, BP7 -
Likely benign, no assertion criteria provided	clinical testing	Genome Diagnostics Laboratory, University Medical Center Utrecht	-	- -
Benign, criteria provided, single submitter	clinical testing	ARUP Laboratories, Molecular Genetics and Genomics, ARUP Laboratories	Oct 16, 2023	- -

not specified Benign:2

Benign, criteria provided, single submitter	clinical testing	GeneDx	Oct 14, 2013	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	Women's Health and Genetics/Laboratory Corporation of America, LabCorp	May 14, 2018	Variant summary: MYH11 c.5587C>T alters a non-conserved nucleotide resulting in a synonymous change. 5/5 computational tools predict no significant impact on normal splicing. However, these predictions have yet to be confirmed by functional studies. The variant allele was found at a frequency of 0.0013 in 277156 control chromosomes in the gnomAD database, including 1 homozygotes. The observed variant frequency is approximately 1048-fold higher than the estimated maximal expected allele frequency for a pathogenic variant in MYH11 causing Aortopathy phenotype (1.3e-06), strongly suggesting that the variant is benign. The variant, c.5587C>T, has been reported in the literature in one individual affected with Aortopathy (van de Luijtgaarden_2015). This report does not provide unequivocal conclusions about association of the variant with Aortopathy. To our knowledge, no experimental evidence demonstrating an impact on protein function has been reported. Multiple ClinVar submissions from clinical diagnostic laboratories (evaluation after 2014) cite the variant as "likely benign/benign." Based on the evidence outlined above, the variant was classified as benign. -

Lissencephaly, Recessive Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Illumina Laboratory Services, Illumina

Jun 14, 2016

- -

Connective tissue disorder Benign:1

Likely benign, criteria provided, single submitter

clinical testing

Center for Human Genetics, Inc, Center for Human Genetics, Inc

Jun 01, 2018

- -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.52
CADD	Benign	12
DANN	Benign	0.86

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.090		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: rs142639688; hg19: chr16-15809068;