rs1060500730

Positions:

• chr16-15726864-T-A

Variant summary

Our verdict is Uncertain significance. Variant got 3 ACMG points: 3P and 0B. PM2 PP2

The ENST00000300036.6(MYH11):​c.3842A>T​(p.Lys1281Ile) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. Variant has been reported in ClinVar as Uncertain significance (★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. K1281E) has been classified as Uncertain significance.

• Frequency: Genomes: not found (cov: 31)
• Consequence: MYH11 ENST00000300036.6 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 0.459

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]

(HGNC:):

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 Uncertain_significance. Variant got 3 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PP2: Missense variant in gene, where missense usually causes diseases (based on misZ statistic), MYH11. . Gene score misZ 1.4389 (greater than the threshold 3.09). Trascript score misZ 3.4142 (greater than threshold 3.09). GenCC has associacion of gene with aortic aneurysm, familial thoracic 4, visceral myopathy 2, familial thoracic aortic aneurysm and aortic dissection, megacystis-microcolon-intestinal hypoperistalsis syndrome 2, megacystis-microcolon-intestinal hypoperistalsis syndrome.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
MYH11	NM_002474.3	c.3842A>T	p.Lys1281Ile	missense_variant	28/41	ENST00000300036.6	NP_002465.1
MYH11	NM_001040113.2	c.3863A>T	p.Lys1288Ile	missense_variant	29/43	ENST00000452625.7	NP_001035202.1
MYH11	NM_001040114.2	c.3863A>T	p.Lys1288Ile	missense_variant	29/42		NP_001035203.1
MYH11	NM_022844.3	c.3842A>T	p.Lys1281Ile	missense_variant	28/42		NP_074035.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
MYH11	ENST00000300036.6	c.3842A>T	p.Lys1281Ile	missense_variant	28/41	1	NM_002474.3	ENSP00000300036	P3
MYH11	ENST00000452625.7	c.3863A>T	p.Lys1288Ile	missense_variant	29/43	1	NM_001040113.2	ENSP00000407821
	ENST00000574212.1	n.191T>A		non_coding_transcript_exon_variant	1/2	2

Frequencies

GnomAD3 genomes Cov.: 31

GnomAD4 exome Cov.: 30

GnomAD4 genome Cov.: 31

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

Aortic aneurysm, familial thoracic 4 Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

Oct 08, 2016

Algorithms developed to predict the effect of missense changes on protein structure and function do not agree on the potential impact of this missense change (SIFT: "Deleterious"; PolyPhen-2: "Benign"; Align-GVGD: "Class C0"). In summary, this variant is a novel missense change with uncertain impact on protein function. It has been classified as a Variant of Uncertain Significance. This variant is not present in population databases (ExAC no frequency) and has not been reported in the literature in individuals with a MYH11-related disease. This sequence change replaces lysine with isoleucine at codon 1288 of the MYH11 protein (p.Lys1288Ile). The lysine residue is moderately conserved and there is a moderate physicochemical difference between lysine and isoleucine. -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	0.57
BayesDel_addAF	Uncertain	0.063	T
BayesDel_noAF	Benign	-0.15
CADD	Benign	22
DANN	Uncertain	0.99
DEOGEN2	Uncertain	0.78	.;.;.;D
Eigen	Uncertain	0.38
Eigen_PC	Uncertain	0.34
FATHMM_MKL	Uncertain	0.84	D
LIST_S2	Uncertain	0.95	D;D;D;D
M_CAP	Uncertain	0.086	D
MetaRNN	Uncertain	0.58	D;D;D;D
MetaSVM	Uncertain	0.35	D
MutationAssessor	Uncertain	2.1	.;.;M;M
MutationTaster	Benign	1.0	D;D;D;D;D
PrimateAI	Benign	0.47	T
PROVEAN	Pathogenic	-5.4	D;D;.;D
REVEL	Pathogenic	0.67
Sift	Uncertain	0.0020	D;D;.;D
Sift4G	Benign	0.076	T;T;T;T
Polyphen		0.93	.;.;.;P
Vest4		0.49
MutPred		0.62		.;.;Loss of ubiquitination at K1281 (P = 0.0022);Loss of ubiquitination at K1281 (P = 0.0022);
MVP		0.73
MPC		0.47
ClinPred		0.98	D
GERP RS		4.7
Varity_R		0.69
gMVP		0.32

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: rs1060500730; hg19: chr16-15820721;