17-18155320-G-A

Position:

• chr17-18155320-G-A

Variant summary

Our verdict is Uncertain significance. Variant got 1 ACMG points: 4P and 3B. PM1 PM2 BP4_Moderate BP6

The NM_016239.4(MYO15A):​c.8347G>A​(p.Val2783Met) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.0000564 in 1,613,768 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 Conflicting classifications of pathogenicity (no stars).

• Frequency:
  • Genomes: 𝑓 0.00018 (0 hom., cov: 33)
  • Exomes 𝑓: 0.000044 (0 hom.)
• Consequence: MYO15A NM_016239.4 missense
• Clinical Significance: Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:1 B:1
• Conservation: PhyloP100: 9.52

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]

LOC105371567 (HGNC:):

ACMG classification

Verdict is Uncertain_significance. Variant got 1 ACMG points.

• PM1: In a hotspot region, there are 3 aminoacids with missense pathogenic changes in the window of +-8 aminoacids around while only 1 benign, 4 uncertain in NM_016239.4
• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.18460098).
• BP6: Variant 17-18155320-G-A is Benign according to our data. Variant chr17-18155320-G-A is described in ClinVar as [Conflicting_classifications_of_pathogenicity]. Clinvar id is 586160.We mark this variant Likely_benign, oryginal submissions are: {Uncertain_significance=1, Benign=1}.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
MYO15A	NM_016239.4	c.8347G>A	p.Val2783Met	missense_variant	47/66	ENST00000647165.2
LOC105371567	XR_001752809.1	n.21C>T		non_coding_transcript_exon_variant	1/5

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
MYO15A	ENST00000647165.2	c.8347G>A	p.Val2783Met	missense_variant	47/66		NM_016239.4	P1

Frequencies

GnomAD3 genomes AF: 0.000177 AC: 27 AN: 152212 Hom.: 0 Cov.: 33

Gnomad AFR AF: 0.000603

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.00

Gnomad ASJ AF: 0.00

Gnomad EAS AF: 0.00

Gnomad SAS AF: 0.00

Gnomad FIN AF: 0.0000941

Gnomad MID AF: 0.00

Gnomad NFE AF: 0.0000147

Gnomad OTH AF: 0.00

GnomAD3 exomes AF: 0.000112 AC: 28 AN: 249240 Hom.: 0 AF XY: 0.0000813 AC XY: 11 AN XY: 135316

Gnomad AFR exome AF: 0.000777

Gnomad AMR exome AF: 0.000145

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.0000557

Gnomad SAS exome AF: 0.0000980

Gnomad FIN exome AF: 0.0000929

Gnomad NFE exome AF: 0.0000442

Gnomad OTH exome AF: 0.00

GnomAD4 exome AF: 0.0000438 AC: 64 AN: 1461438 Hom.: 0 Cov.: 34 AF XY: 0.0000358 AC XY: 26 AN XY: 727038

Gnomad4 AFR exome AF: 0.000568

Gnomad4 AMR exome AF: 0.000134

Gnomad4 ASJ exome AF: 0.00

Gnomad4 EAS exome AF: 0.0000756

Gnomad4 SAS exome AF: 0.000116

Gnomad4 FIN exome AF: 0.0000755

Gnomad4 NFE exome AF: 0.0000180

Gnomad4 OTH exome AF: 0.0000331

GnomAD4 genome AF: 0.000177 AC: 27 AN: 152330 Hom.: 0 Cov.: 33 AF XY: 0.000148 AC XY: 11 AN XY: 74480

Gnomad4 AFR AF: 0.000601

Gnomad4 AMR AF: 0.00

Gnomad4 ASJ AF: 0.00

Gnomad4 EAS AF: 0.00

Gnomad4 SAS AF: 0.00

Gnomad4 FIN AF: 0.0000941

Gnomad4 NFE AF: 0.0000147

Gnomad4 OTH AF: 0.00

Alfa AF: 0.000100 Hom.: 0

Bravo AF: 0.000193

ESP6500AA AF: 0.00120 AC: 5

ESP6500EA AF: 0.00 AC: 0

ExAC AF: 0.000107 AC: 13

Asia WGS AF: 0.000289 AC: 1 AN: 3478

EpiCase AF: 0.0000545

EpiControl AF: 0.0000593

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Uncertain:1 Benign:1

Revision: criteria provided, conflicting classifications

Submissions by phenotype

not provided Uncertain:1 Benign:1

Uncertain significance, criteria provided, single submitter	clinical testing	Athena Diagnostics	May 25, 2018	- -
Benign, criteria provided, single submitter	clinical testing	Labcorp Genetics (formerly Invitae), Labcorp	Dec 09, 2023	- -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.26
BayesDel_addAF	Benign	-0.32	T
BayesDel_noAF	Uncertain	-0.030
CADD	Pathogenic	28
DANN	Benign	0.97
DEOGEN2	Benign	0.031	T;T;T;.;.
Eigen	Pathogenic	0.81
Eigen_PC	Pathogenic	0.78
FATHMM_MKL	Pathogenic	0.99	D
LIST_S2	Uncertain	0.91	D;.;D;D;D
M_CAP	Pathogenic	0.32	D
MetaRNN	Benign	0.18	T;T;T;T;T
MetaSVM	Uncertain	0.70	D
MutationAssessor	Uncertain	2.3	.;M;M;.;.
MutationTaster	Benign	1.0	D;D;D
PrimateAI	Uncertain	0.62	T
PROVEAN	Benign	-1.2	.;N;.;.;.
REVEL	Uncertain	0.50
Sift	Uncertain	0.012	.;D;.;.;.
Sift4G	Uncertain	0.0020	D;D;.;D;.
Polyphen		1.0	.;D;D;.;.
Vest4		0.57
MVP		0.87
ClinPred		0.090	T
GERP RS		5.6
Varity_R		0.15
gMVP		0.21

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.14		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: rs201214320; hg19: chr17-18058634; COSMIC: COSV52763500; COSMIC: COSV52763500;