16-15724960-G-T

Variant names:

• chr16-15724960-G-T
• rs541280738
• NM_002474.3:c.3891C>A

Variant summary

Our verdict is Uncertain significance. The variant received 2 ACMG points: 2P and 0B. PM2

The NM_002474.3(MYH11):​c.3891C>A​(p.Asn1297Lys) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000137 in 1,461,832 control chromosomes in the GnomAD database, with no homozygous occurrence. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Synonymous variant affecting the same amino acid position (i.e. N1297N) has been classified as Likely benign.

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 0.0000014 (0 hom.)
• Consequence: MYH11 NM_002474.3 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: -0.676
• 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 2 ACMG points.

• PM2: Very rare variant in population databases, with high coverage

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
MYH11	NM_002474.3	c.3891C>A	p.Asn1297Lys	missense_variant	Exon 29 of 41	ENST00000300036.6	NP_002465.1
MYH11	NM_001040113.2	c.3912C>A	p.Asn1304Lys	missense_variant	Exon 30 of 43	ENST00000452625.7	NP_001035202.1
NDE1	NM_017668.3	c.*709G>T		3_prime_UTR_variant	Exon 9 of 9	ENST00000396354.6	NP_060138.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
MYH11	ENST00000300036.6	c.3891C>A	p.Asn1297Lys	missense_variant	Exon 29 of 41	1	NM_002474.3	ENSP00000300036.5
MYH11	ENST00000452625.7	c.3912C>A	p.Asn1304Lys	missense_variant	Exon 30 of 43	1	NM_001040113.2	ENSP00000407821.2
NDE1	ENST00000396354.6	c.*709G>T		3_prime_UTR_variant	Exon 9 of 9	1	NM_017668.3	ENSP00000379642.1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome AF: 0.00000137 AC: 2 AN: 1461832 Hom.: 0 Cov.: 34 AF XY: 0.00000138 AC XY: 1 AN XY: 727224

African (AFR) AF: 0.00 AC: 0 AN: 33478

American (AMR) AF: 0.00 AC: 0 AN: 44722

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26136

East Asian (EAS) AF: 0.00 AC: 0 AN: 39700

South Asian (SAS) AF: 0.00 AC: 0 AN: 86256

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 53370

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

European-Non Finnish (NFE) AF: 0.00000180 AC: 2 AN: 1112008

Other (OTH) AF: 0.00 AC: 0 AN: 60394

GnomAD4 genome Cov.: 32

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Uncertain	0.36
BayesDel_addAF	Benign	-0.11	T
BayesDel_noAF	Benign	-0.40
CADD	Benign	3.5
DANN	Uncertain	0.99
DEOGEN2	Uncertain	0.43	.;.;.;T
Eigen	Benign	-0.59
Eigen_PC	Benign	-0.64
FATHMM_MKL	Benign	0.27	N
LIST_S2	Uncertain	0.96	D;D;D;D
M_CAP	Benign	0.048	D
MetaRNN	Uncertain	0.44	T;T;T;T
MetaSVM	Benign	-0.35	T
MutationAssessor	Uncertain	2.1	.;.;M;M
PhyloP100		-0.68
PrimateAI	Uncertain	0.62	T
PROVEAN	Benign	-1.3	N;N;.;N
REVEL	Benign	0.25
Sift	Uncertain	0.021	D;D;.;D
Sift4G	Uncertain	0.022	D;D;D;D
Polyphen		0.54	.;.;.;P
Vest4		0.47
MutPred		0.41		.;.;Gain of ubiquitination at N1297 (P = 0.0037);Gain of ubiquitination at N1297 (P = 0.0037);
MVP		0.69
MPC		0.47
ClinPred		0.74	D
GERP RS		-1.6
Varity_R		0.081
gMVP		0.20
Mutation Taster		=61/39	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: rs541280738; hg19: chr16-15818817;