chr17-18156966-G-C

Position:

• chr17-18156966-G-C

Variant summary

Our verdict is Uncertain significance. Variant got 1 ACMG points: 2P and 1B. PM2 BP4

The NM_016239.4(MYO15A):​c.8614G>C​(p.Val2872Leu) variant causes a missense change. The variant allele was found at a frequency of 0.00000616 in 1,461,818 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign 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. V2872M) has been classified as Uncertain significance.

• Frequency:
  • Genomes: not found (cov: 33)
  • Exomes 𝑓: 0.0000062 (0 hom.)
• Consequence: MYO15A NM_016239.4 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 5.41

Genes affected

MYO15A (HGNC:7594): (myosin XVA) This gene encodes an unconventional myosin. This protein differs from other myosins in that it has a long N-terminal extension preceding the conserved motor domain. Studies in mice suggest that this protein is necessary for actin organization in the hair cells of the cochlea. Mutations in this gene have been associated with profound, congenital, neurosensory, nonsyndromal deafness. This gene is located within the Smith-Magenis syndrome region on chromosome 17. Read-through transcripts containing an upstream gene and this gene have been identified, but they are not thought to encode a fusion protein. Several alternatively spliced transcript variants have been described, but their full length sequences have not been determined. [provided by RefSeq, Jul 2008]

ACMG classification

Verdict is Uncertain_significance. Variant got 1 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.4239766).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
MYO15A	NM_016239.4	c.8614G>C	p.Val2872Leu	missense_variant	49/66	ENST00000647165.2
MYO15A	XM_017024715.3	c.8617G>C	p.Val2873Leu	missense_variant	47/64
MYO15A	XM_017024714.3	c.8554G>C	p.Val2852Leu	missense_variant	46/63

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
MYO15A	ENST00000647165.2	c.8614G>C	p.Val2872Leu	missense_variant	49/66		NM_016239.4	P1

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome AF: 0.00000616 AC: 9 AN: 1461818 Hom.: 0 Cov.: 32 AF XY: 0.00000825 AC XY: 6 AN XY: 727222

Gnomad4 AFR exome AF: 0.000119

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: 8.99e-7

Gnomad4 OTH exome AF: 0.0000331

GnomAD4 genome Cov.: 33

Bravo AF: 0.0000113

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Uncertain	0.47
BayesDel_addAF	Benign	-0.055	T
BayesDel_noAF	Benign	-0.32
CADD	Uncertain	24
DANN	Benign	0.97
DEOGEN2	Benign	0.039	T;T;T;.;.
Eigen	Uncertain	0.49
Eigen_PC	Uncertain	0.51
FATHMM_MKL	Uncertain	0.94	D
LIST_S2	Uncertain	0.92	D;.;D;D;D
M_CAP	Benign	0.031	D
MetaRNN	Benign	0.42	T;T;T;T;T
MetaSVM	Benign	-1.1	T
MutationAssessor	Uncertain	2.5	.;M;M;.;.
MutationTaster	Benign	1.0	D;D
PrimateAI	Uncertain	0.70	T
PROVEAN	Benign	-1.8	.;N;.;.;.
REVEL	Benign	0.17
Sift	Benign	0.039	.;D;.;.;.
Sift4G	Pathogenic	0.0	D;D;.;D;.
Polyphen		0.89	.;P;P;.;.
Vest4		0.42
MutPred		0.62		Loss of methylation at K2867 (P = 0.0773);Loss of methylation at K2867 (P = 0.0773);Loss of methylation at K2867 (P = 0.0773);.;.;
MVP		0.42
ClinPred		0.82	D
GERP RS		5.0
Varity_R		0.25
gMVP		0.62

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.010		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: rs368088727; hg19: chr17-18060280;