rs373358736

Variant names:

• chr16-15738676-G-C
• rs373358736
• NM_002474.3:c.3010C>G

Variant summary

Our verdict is Likely benign. The variant received -2 ACMG points: 0P and 2B. BP4 BS1_Supporting

The NM_001040114.2(MYH11):​c.3031C>G​(p.Leu1011Val) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000149 in 1,613,634 control chromosomes in the GnomAD database, including 1 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★★).

• Frequency:
  • Genomes: 𝑓 0.000053 (0 hom., cov: 32)
  • Exomes 𝑓: 0.00016 (1 hom.)
• Consequence: MYH11 NM_001040114.2 missense
• Clinical Significance: Uncertain significance criteria provided, multiple submitters, no conflicts U:7
• Conservation: PhyloP100: 2.83
• Publications: 0 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]

MYH11 Gene-Disease associations (from GenCC):

• familial thoracic aortic aneurysm and aortic dissection

  Inheritance: AD Classification: DEFINITIVE, SUPPORTIVE Submitted by: Orphanet, ClinGen
• aortic aneurysm, familial thoracic 4

  Inheritance: AD Classification: STRONG Submitted by: Labcorp Genetics (formerly Invitae), Ambry Genetics
• megacystis-microcolon-intestinal hypoperistalsis syndrome 2

  Inheritance: AR Classification: STRONG, LIMITED Submitted by: G2P, Labcorp Genetics (formerly Invitae)
• megacystis-microcolon-intestinal hypoperistalsis syndrome

  Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
• visceral myopathy 2

  Inheritance: AR, AD Classification: LIMITED Submitted by: Ambry Genetics, Labcorp Genetics (formerly Invitae)

ACMG classification

Our verdict: Likely_benign. The variant received -2 ACMG points.

• BP4: Computational evidence support a benign effect (MetaRNN=0.3573266).
• BS1: Variant frequency is greater than expected in population nfe. GnomAd4 allele frequency = 0.0000526 (8/152062) while in subpopulation NFE AF = 0.000103 (7/68036). AF 95% confidence interval is 0.0000476. There are 0 homozygotes in GnomAd4. There are 2 alleles in the male GnomAd4 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

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_001040114.2. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	MYH11	NM_002474.3	MANE Select	c.3010C>G	p.Leu1004Val	missense	Exon 24 of 41	NP_002465.1
	MYH11	NM_001040113.2	MANE Plus Clinical	c.3031C>G	p.Leu1011Val	missense	Exon 25 of 43	NP_001035202.1
	MYH11	NM_001040114.2		c.3031C>G	p.Leu1011Val	missense	Exon 25 of 42	NP_001035203.1

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	MYH11	ENST00000300036.6	TSL:1 MANE Select	c.3010C>G	p.Leu1004Val	missense	Exon 24 of 41	ENSP00000300036.5
	MYH11	ENST00000452625.7	TSL:1 MANE Plus Clinical	c.3031C>G	p.Leu1011Val	missense	Exon 25 of 43	ENSP00000407821.2
	MYH11	ENST00000396324.7	TSL:1	c.3031C>G	p.Leu1011Val	missense	Exon 25 of 42	ENSP00000379616.3

Frequencies

GnomAD3 genomes AF: 0.0000526 AC: 8 AN: 152062 Hom.: 0 Cov.: 32

Gnomad AFR AF: 0.00

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.0000655

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: 0.000103

Gnomad OTH AF: 0.00

GnomAD2 exomes AF: 0.0000398 AC: 10 AN: 251340 AF XY: 0.0000515

Gnomad AFR exome AF: 0.00

Gnomad AMR exome AF: 0.00

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.00

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.0000879

Gnomad OTH exome AF: 0.00

GnomAD4 exome AF: 0.000159 AC: 232 AN: 1461572 Hom.: 1 Cov.: 31 AF XY: 0.000162 AC XY: 118 AN XY: 727076

African (AFR) AF: 0.00 AC: 0 AN: 33476

American (AMR) AF: 0.00 AC: 0 AN: 44712

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26124

East Asian (EAS) AF: 0.00 AC: 0 AN: 39672

South Asian (SAS) AF: 0.00 AC: 0 AN: 86194

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 53408

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5768

European-Non Finnish (NFE) AF: 0.000201 AC: 223 AN: 1111840

Other (OTH) AF: 0.000149 AC: 9 AN: 60378

GnomAD4 genome AF: 0.0000526 AC: 8 AN: 152062 Hom.: 0 Cov.: 32 AF XY: 0.0000269 AC XY: 2 AN XY: 74276

African (AFR) AF: 0.00 AC: 0 AN: 41376

American (AMR) AF: 0.0000655 AC: 1 AN: 15264

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 3470

East Asian (EAS) AF: 0.00 AC: 0 AN: 5172

South Asian (SAS) AF: 0.00 AC: 0 AN: 4830

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 10592

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 316

European-Non Finnish (NFE) AF: 0.000103 AC: 7 AN: 68036

Other (OTH) AF: 0.00 AC: 0 AN: 2094

Alfa AF: 0.000112 Hom.: 0

Bravo AF: 0.0000718

TwinsUK AF: 0.000270 AC: 1

ALSPAC AF: 0.000259 AC: 1

ESP6500AA AF: 0.00 AC: 0

ESP6500EA AF: 0.000116 AC: 1

ExAC AF: 0.0000659 AC: 8

EpiCase AF: 0.00

EpiControl AF: 0.000119

ClinVar

ClinVar submissions as Germline

Significance: Uncertain significance

Revision: criteria provided, multiple submitters, no conflicts

Pathogenic	VUS	Benign	Condition
-	2	-	Aortic aneurysm, familial thoracic 4 (2)
-	2	-	Familial thoracic aortic aneurysm and aortic dissection (2)
-	1	-	Aortic aneurysm, familial thoracic 4;C5543466:Visceral myopathy 2;C5543476:Megacystis-microcolon-intestinal hypoperistalsis syndrome 2 (1)
-	1	-	Connective tissue disorder (1)
-	1	-	not provided (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.17
BayesDel_addAF	Benign	-0.090	T
BayesDel_noAF	Benign	-0.16
CADD	Uncertain	24
DANN	Uncertain	0.99
DEOGEN2	Uncertain	0.65	D
Eigen	Benign	0.051
Eigen_PC	Benign	0.15
FATHMM_MKL	Uncertain	0.91	D
LIST_S2	Uncertain	0.87	D
M_CAP	Uncertain	0.12	D
MetaRNN	Benign	0.36	T
MetaSVM	Uncertain	0.34	D
MutationAssessor	Uncertain	2.5	M
PhyloP100		2.8
PrimateAI	Uncertain	0.75	T
PROVEAN	Benign	-2.1	N
REVEL	Uncertain	0.51
Sift	Uncertain	0.018	D
Sift4G	Uncertain	0.028	D
Polyphen		0.023	B
Vest4		0.45
MVP		0.79
MPC		0.33
ClinPred		0.24	T
GERP RS		4.3
Varity_R		0.27
gMVP		0.32
Mutation Taster		=90/10	polymorphism

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: rs373358736; hg19: chr16-15832533;