rs727503222

chr19-50230599-G-Achr19-50230599-G-C

Variant summary

Our verdict is Uncertain significance. Variant got 0 ACMG points: 2P and 2B. PM2 BP4_Moderate

The NM_001145809.2(MYH14):c.949G>A(p.Gly317Arg) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000000707 in 1,414,164 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 Uncertain significance (★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. G317A) has been classified as Uncertain significance.

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 7.1e-7 (0 hom.)
• Consequence: MYH14 NM_001145809.2 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 0.895

Genes affected

MYH14 (HGNC:23212): (myosin heavy chain 14) This gene encodes a member of the myosin superfamily. The protein represents a conventional non-muscle myosin; it should not be confused with the unconventional myosin-14 (MYO14). Myosins are actin-dependent motor proteins with diverse functions including regulation of cytokinesis, cell motility, and cell polarity. Mutations in this gene result in one form of autosomal dominant hearing impairment. Multiple transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Dec 2011]

ACMG classification

Verdict is Uncertain_significance. Variant got 0 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.25502163).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
MYH14	NM_001145809.2	c.949G>A	p.Gly317Arg	missense_variant	9/43	ENST00000642316.2
MYH14	NM_001077186.2	c.949G>A	p.Gly317Arg	missense_variant	9/42
MYH14	NM_024729.4	c.925G>A	p.Gly309Arg	missense_variant	8/41

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
MYH14	ENST00000642316.2	c.949G>A	p.Gly317Arg	missense_variant	9/43		NM_001145809.2

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome AF: 7.07e-7 AC: 1 AN: 1414164 Hom.: 0 Cov.: 31 AF XY: 0.00000143 AC XY: 1 AN XY: 698914

Gnomad4 AFR exome AF: 0.00

Gnomad4 AMR exome AF: 0.00

Gnomad4 ASJ exome AF: 0.00

Gnomad4 EAS exome AF: 0.00

Gnomad4 SAS exome AF: 0.00

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 0.00

Gnomad4 OTH exome AF: 0.0000170

GnomAD4 genome Cov.: 32

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

not specified Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Laboratory for Molecular Medicine, Mass General Brigham Personalized Medicine

Jun 11, 2013

The Gly317Arg variant in MYH14 has not been reported in individuals with hearing loss. Data from large population studies are insufficient to assess the frequen cy of this variant. Computational analyses (biochemical amino acid properties, c onservation, AlignGVGD, PolyPhen2, and SIFT) do not provide strong support for o r against an impact to the protein. In summary, additional data is needed to det ermine the clinical significance of this variant. -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.16
BayesDel_addAF	Uncertain	0.016	T
BayesDel_noAF	Benign	-0.22
Cadd	Uncertain	26
Dann	Uncertain	0.99
Eigen	Benign	-0.59
Eigen_PC	Benign	-0.40
FATHMM_MKL	Benign	0.36	N
M_CAP	Uncertain	0.12	D
MetaRNN	Benign	0.26	T;T;T;T;T;T;T
MetaSVM	Benign	-0.47	T
MutationTaster	Benign	0.96	D;D;D;D
PrimateAI	Uncertain	0.64	T
Sift4G	Benign	0.27	T;T;T;.;T;T;T
Polyphen		0.057	B;B;B;B;.;B;B
Vest4		0.31
MutPred		0.49		.;.;Gain of solvent accessibility (P = 0.0674);.;.;.;Gain of solvent accessibility (P = 0.0674);
MVP		0.57
MPC		0.56
ClinPred		0.40	T
GERP RS		3.7
Varity_R		0.18
gMVP		0.63

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: rs727503222; hg19: chr19-50733856;