chr16-15720216-C-T

Variant names:

• chr16-15720216-C-T
• rs1555551728
• NM_002474.3:c.4888G>A

Variant summary

Our verdict is Uncertain significance. The variant received 4 ACMG points: 4P and 0B. PM2 PP3_Moderate

The NM_002474.3(MYH11):​c.4888G>A​(p.Glu1630Lys) variant causes a missense change involving the alteration of a conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a pathogenic outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. E1630D) has been classified as Uncertain significance.

• Frequency: Genomes: not found (cov: 31)
• Consequence: MYH11 NM_002474.3 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 7.82
• 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]

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: Uncertain_significance. The variant received 4 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.925

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_002474.3. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	MYH11	NM_002474.3	MANE Select	c.4888G>A	p.Glu1630Lys	missense	Exon 34 of 41	NP_002465.1
	MYH11	NM_001040113.2	MANE Plus Clinical	c.4909G>A	p.Glu1637Lys	missense	Exon 35 of 43	NP_001035202.1
	NDE1	NM_017668.3	MANE Select	c.948-3975C>T		intron	N/A	NP_060138.1

Ensembl Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	MYH11	ENST00000300036.6	TSL:1 MANE Select	c.4888G>A	p.Glu1630Lys	missense	Exon 34 of 41	ENSP00000300036.5
	MYH11	ENST00000452625.7	TSL:1 MANE Plus Clinical	c.4909G>A	p.Glu1637Lys	missense	Exon 35 of 43	ENSP00000407821.2
	MYH11	ENST00000396324.7	TSL:1	c.4909G>A	p.Glu1637Lys	missense	Exon 35 of 42	ENSP00000379616.3

Frequencies

GnomAD3 genomes Cov.: 31

GnomAD4 exome Cov.: 34

GnomAD4 genome Cov.: 31

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.27
BayesDel_addAF	Pathogenic	0.40	D
BayesDel_noAF	Pathogenic	0.34
CADD	Uncertain	25
DANN	Pathogenic	1.0
DEOGEN2	Uncertain	0.67	D
Eigen	Uncertain	0.30
Eigen_PC	Uncertain	0.40
FATHMM_MKL	Uncertain	0.96	D
LIST_S2	Uncertain	0.95	D
M_CAP	Uncertain	0.27	D
MetaRNN	Pathogenic	0.93	D
MetaSVM	Uncertain	0.21	D
MutationAssessor	Pathogenic	3.4	M
PhyloP100		7.8
PrimateAI	Uncertain	0.69	T
PROVEAN	Uncertain	-2.5	D
REVEL	Pathogenic	0.83
Sift	Benign	0.12	T
Sift4G	Uncertain	0.059	T
Polyphen		0.27	B
Vest4		0.95
MutPred		0.75		Gain of MoRF binding (P = 0.0068)
MVP		0.95
MPC		0.58
ClinPred		0.99	D
GERP RS		5.0
Varity_R		0.43
gMVP		0.60
Mutation Taster		=71/29	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: rs1555551728; hg19: chr16-15814073;