chr16-15771585-G-A

Variant names:

• chr16-15771585-G-A
• rs112161189
• NM_002474.3:c.1017C>T

Variant summary

Our verdict is Benign. Variant got -10 ACMG points: 0P and 10B. BP4_Strong BP6 BP7 BS1

The NM_002474.3(MYH11):​c.1017C>T​(p.Ser339Ser) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000163 in 1,613,696 control chromosomes in the GnomAD database, with no homozygous occurrence. 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 0.00016 (0 hom., cov: 29)
  • Exomes 𝑓: 0.00016 (0 hom.)
• Consequence: MYH11 NM_002474.3 synonymous
• Clinical Significance: Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:2 B:8
• Conservation: PhyloP100: -1.38

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]

ACMG classification

Verdict is Benign. Variant got -10 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.79).
• BP6: Variant 16-15771585-G-A is Benign according to our data. Variant chr16-15771585-G-A is described in ClinVar as [Conflicting_classifications_of_pathogenicity]. Clinvar id is 199079.We mark this variant Likely_benign, oryginal submissions are: {Likely_benign=5, Benign=2, Uncertain_significance=2}.
• BP7: Synonymous conserved (PhyloP=-1.38 with no splicing effect.
• BS1: Variant frequency is greater than expected in population amr. gnomad4 allele frequency = 0.000165 (25/151880) while in subpopulation AMR AF= 0.000525 (8/15248). AF 95% confidence interval is 0.000261. There are 0 homozygotes in gnomad4. There are 6 alleles in male gnomad4 subpopulation. Median coverage is 29. This position pass quality control queck.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
MYH11	NM_002474.3	c.1017C>T	p.Ser339Ser	synonymous_variant	Exon 9 of 41	ENST00000300036.6	NP_002465.1
MYH11	NM_001040113.2	c.1038C>T	p.Ser346Ser	synonymous_variant	Exon 10 of 43	ENST00000452625.7	NP_001035202.1
MYH11	NM_001040114.2	c.1038C>T	p.Ser346Ser	synonymous_variant	Exon 10 of 42		NP_001035203.1
MYH11	NM_022844.3	c.1017C>T	p.Ser339Ser	synonymous_variant	Exon 9 of 42		NP_074035.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
MYH11	ENST00000300036.6	c.1017C>T	p.Ser339Ser	synonymous_variant	Exon 9 of 41	1	NM_002474.3	ENSP00000300036.5
MYH11	ENST00000452625.7	c.1038C>T	p.Ser346Ser	synonymous_variant	Exon 10 of 43	1	NM_001040113.2	ENSP00000407821.2

Frequencies

GnomAD3 genomes AF: 0.000165 AC: 25 AN: 151764 Hom.: 0 Cov.: 29

Gnomad AFR AF: 0.000145

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.000525

Gnomad ASJ AF: 0.00115

Gnomad EAS AF: 0.000387

Gnomad SAS AF: 0.00

Gnomad FIN AF: 0.00

Gnomad MID AF: 0.00

Gnomad NFE AF: 0.0000441

Gnomad OTH AF: 0.000960

GnomAD3 exomes AF: 0.000255 AC: 64 AN: 251472 Hom.: 0 AF XY: 0.000235 AC XY: 32 AN XY: 135910

Gnomad AFR exome AF: 0.000308

Gnomad AMR exome AF: 0.000347

Gnomad ASJ exome AF: 0.00139

Gnomad EAS exome AF: 0.000217

Gnomad SAS exome AF: 0.0000327

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.000176

Gnomad OTH exome AF: 0.00130

GnomAD4 exome AF: 0.000163 AC: 238 AN: 1461816 Hom.: 0 Cov.: 31 AF XY: 0.000160 AC XY: 116 AN XY: 727200

Gnomad4 AFR exome AF: 0.000179

Gnomad4 AMR exome AF: 0.000604

Gnomad4 ASJ exome AF: 0.00126

Gnomad4 EAS exome AF: 0.0000504

Gnomad4 SAS exome AF: 0.0000580

Gnomad4 FIN exome AF: 0.0000187

Gnomad4 NFE exome AF: 0.000127

Gnomad4 OTH exome AF: 0.000265

GnomAD4 genome AF: 0.000165 AC: 25 AN: 151880 Hom.: 0 Cov.: 29 AF XY: 0.0000808 AC XY: 6 AN XY: 74214

Gnomad4 AFR AF: 0.000145

Gnomad4 AMR AF: 0.000525

Gnomad4 ASJ AF: 0.00115

Gnomad4 EAS AF: 0.000387

Gnomad4 SAS AF: 0.00

Gnomad4 FIN AF: 0.00

Gnomad4 NFE AF: 0.0000441

Gnomad4 OTH AF: 0.000950

Alfa AF: 0.000180 Hom.: 0

Bravo AF: 0.000227

Asia WGS AF: 0.000289 AC: 1 AN: 3478

EpiCase AF: 0.000218

EpiControl AF: 0.000237

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Uncertain:2 Benign:8

Revision: criteria provided, conflicting classifications

Submissions by phenotype

not provided Uncertain:1 Benign:2

Nov 04, 2020

GeneDx

Significance: Likely benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Sep 03, 2014

Eurofins Ntd Llc (ga)

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

May 01, 2024

CeGaT Center for Human Genetics Tuebingen

Significance: Likely benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

MYH11: BP4, BP7 -

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

Jan 24, 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: Uncertain significance

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, 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. -

Familial thoracic aortic aneurysm and aortic dissection Benign:2

Feb 10, 2023

CHEO Genetics Diagnostic Laboratory, Children's Hospital of Eastern Ontario

Significance: Likely benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Aug 05, 2018

Color Diagnostics, LLC DBA Color Health

Significance: Likely benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

not specified Benign:1

Mar 17, 2024

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

Significance: Benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

MYH11-related disorder Benign:1

Mar 09, 2023

PreventionGenetics, part of Exact Sciences

Significance: Likely benign

Review Status: no assertion criteria provided

Collection Method: clinical testing

This variant is classified as likely benign based on ACMG/AMP sequence variant interpretation guidelines (Richards et al. 2015 PMID: 25741868, with internal and published modifications). -

Cardiovascular phenotype Benign:1

Aug 10, 2015

Ambry Genetics

Significance: Likely benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

This alteration is classified as likely 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	-0.79
CADD	Benign	0.59
DANN	Benign	0.47

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.010		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: rs112161189; hg19: chr16-15865442;