rs149943255

chr15-52405409-G-A

Variant summary

Our verdict is Benign. Variant got -20 ACMG points: 0P and 20B. BP4_Strong BP6_Very_Strong BS1 BS2

The NM_001382347.1(MYO5A):c.947-16C>T variant causes a splice polypyrimidine tract, intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000633 in 1,533,606 control chromosomes in the GnomAD database, including 7 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★★).

• Frequency:
  • Genomes: 𝑓 0.0033 (5 hom., cov: 33)
  • Exomes 𝑓: 0.00034 (2 hom.)
• Consequence: MYO5A NM_001382347.1 splice_polypyrimidine_tract, intron
• Clinical Significance: Benign/Likely benign criteria provided, multiple submitters, no conflicts B:2
• Conservation: PhyloP100: 0.783

Genes affected

MYO5A (HGNC:7602): (myosin VA) This gene is one of three myosin V heavy-chain genes, belonging to the myosin gene superfamily. Myosin V is a class of actin-based motor proteins involved in cytoplasmic vesicle transport and anchorage, spindle-pole alignment and mRNA translocation. The protein encoded by this gene is abundant in melanocytes and nerve cells. Mutations in this gene cause Griscelli syndrome type-1 (GS1) and neuroectodermal melanolysosomal disease, or Elejalde disease. [provided by RefSeq, Sep 2023]

ACMG classification

Verdict is Benign. Variant got -20 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.79).
• BP6: Variant 15-52405409-G-A is Benign according to our data. Variant chr15-52405409-G-A is described in ClinVar as [Likely_benign]. Clinvar id is 255658.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.
• BS1: Variant frequency is greater than expected in population afr. gnomad4 allele frequency = 0.00328 (500/152306) while in subpopulation AFR AF= 0.0113 (470/41568). AF 95% confidence interval is 0.0105. There are 5 homozygotes in gnomad4. There are 238 alleles in male gnomad4 subpopulation. Median coverage is 33. This position pass quality control queck.
• BS2: High Homozygotes in GnomAd at 5 AR gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
MYO5A	NM_001382347.1	c.947-16C>T		splice_polypyrimidine_tract_variant, intron_variant		ENST00000399233.7

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
MYO5A	ENST00000399233.7	c.947-16C>T		splice_polypyrimidine_tract_variant, intron_variant		5	NM_001382347.1

Frequencies

GnomAD3 genomes AF: 0.00329 AC: 500 AN: 152188 Hom.: 5 Cov.: 33

Gnomad AFR AF: 0.0113

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.00144

Gnomad ASJ AF: 0.00

Gnomad EAS AF: 0.00

Gnomad SAS AF: 0.000207

Gnomad FIN AF: 0.00

Gnomad MID AF: 0.00

Gnomad NFE AF: 0.0000441

Gnomad OTH AF: 0.00191

GnomAD3 exomes AF: 0.000862 AC: 213 AN: 247116 Hom.: 0 AF XY: 0.000679 AC XY: 91 AN XY: 134074

Gnomad AFR exome AF: 0.0111

Gnomad AMR exome AF: 0.000786

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.00

Gnomad SAS exome AF: 0.0000659

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.0000714

Gnomad OTH exome AF: 0.000999

GnomAD4 exome AF: 0.000341 AC: 471 AN: 1381300 Hom.: 2 Cov.: 24 AF XY: 0.000291 AC XY: 201 AN XY: 691722

Gnomad4 AFR exome AF: 0.0105

Gnomad4 AMR exome AF: 0.000808

Gnomad4 ASJ exome AF: 0.00

Gnomad4 EAS exome AF: 0.00

Gnomad4 SAS exome AF: 0.0000118

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 0.0000414

Gnomad4 OTH exome AF: 0.000970

GnomAD4 genome AF: 0.00328 AC: 500 AN: 152306 Hom.: 5 Cov.: 33 AF XY: 0.00320 AC XY: 238 AN XY: 74480

Gnomad4 AFR AF: 0.0113

Gnomad4 AMR AF: 0.00144

Gnomad4 ASJ AF: 0.00

Gnomad4 EAS AF: 0.00

Gnomad4 SAS AF: 0.000207

Gnomad4 FIN AF: 0.00

Gnomad4 NFE AF: 0.0000441

Gnomad4 OTH AF: 0.00189

Alfa AF: 0.00181 Hom.: 0

Bravo AF: 0.00376

Asia WGS AF: 0.000577 AC: 2 AN: 3478

ClinVar

Significance: Benign/Likely benign

Submissions summary: Benign:2

Revision: criteria provided, multiple submitters, no conflicts

Submissions by phenotype

not specified Benign:1

Likely benign, criteria provided, single submitter

clinical testing

PreventionGenetics, part of Exact Sciences

-

- -

not provided Benign:1

Benign, criteria provided, single submitter

clinical testing

Invitae

Nov 13, 2023

- -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.79
Cadd	Benign	8.7
Dann	Benign	0.47

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: rs149943255; hg19: chr15-52697606;