Genetic Variant MYO5A:c.947-16C>T (chr15-52405409-G-A) – ACMG Classification: Benign (-20 pts)

Variant summary

Our verdict is Benign. The variant received -20 ACMG points: 0P and 20B. BP4_StrongBP6_Very_StrongBS1BS2

The NM_001382347.1(MYO5A):c.947-16C>T variant causes a 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 intron

Scores

Clinical Significance

Benign/Likely benign criteria provided, multiple submitters, no conflicts B:2

Conservation

PhyloP100: 0.783

Publications

0 publications found

Variant links:

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]

MYO5A Gene-Disease associations (from GenCC):

Griscelli syndrome type 1
Inheritance: AR Classification: DEFINITIVE, STRONG, MODERATE Submitted by: ClinGen, G2P, Labcorp Genetics (formerly Invitae), Ambry Genetics
Griscelli syndrome type 3
Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet

MYO5A links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Benign. The variant received -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 Benign/Likely_benign. ClinVar VariationId 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 the male GnomAd4 subpopulation. Median coverage is 33. This position passed quality control check.

BS2

High Homozygotes in GnomAd4 at 5 AR gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
MYO5A	NM_001382347.1 link	c.947-16C>T		intron_variant	Intron 8 of 41	ENST00000399233.7	NP_001369276.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
MYO5A	ENST00000399233.7 link	c.947-16C>T		intron_variant	Intron 8 of 41	5	NM_001382347.1	ENSP00000382179.4		Q9Y4I1-3F8WE88

Frequencies

GnomAD3 genomes

AF:

0.00329

AC:

500

AN:

152188

Hom.:

Cov.:

show subpopulations

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

GnomAD2 exomes

AF:

0.000862

AC:

213

AN:

247116

AF XY:

0.000679

show subpopulations

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 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.:

Cov.:

AF XY:

0.000291

AC XY:

201

AN XY:

691722

show subpopulations

African (AFR)

AF:

0.0105

AC:

333

AN:

31732

American (AMR)

AF:

0.000808

AC:

AN:

44554

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

25614

East Asian (EAS)

AF:

0.00

AC:

AN:

39200

South Asian (SAS)

AF:

0.0000118

AC:

AN:

84530

European-Finnish (FIN)

AF:

0.00

AC:

AN:

52914

Middle Eastern (MID)

AF:

0.000356

AC:

AN:

5614

European-Non Finnish (NFE)

AF:

0.0000414

AC:

AN:

1039436

Other (OTH)

AF:

0.000970

AC:

AN:

57706

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.495

Heterozygous variant carriers

103

129

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Variant carriers

100

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

GnomAD4 genome

AF:

0.00328

AC:

500

AN:

152306

Hom.:

Cov.:

AF XY:

0.00320

AC XY:

238

AN XY:

74480

show subpopulations

African (AFR)

AF:

0.0113

AC:

470

AN:

41568

American (AMR)

AF:

0.00144

AC:

AN:

15302

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3470

East Asian (EAS)

AF:

0.00

AC:

AN:

5190

South Asian (SAS)

AF:

0.000207

AC:

AN:

4828

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10610

Middle Eastern (MID)

AF:

0.00

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.0000441

AC:

AN:

68020

Other (OTH)

AF:

0.00189

AC:

AN:

2112

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.503

Heterozygous variant carriers

117

146

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome Het

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

Alfa

AF:

0.00136

Hom.:

Bravo

AF:

0.00376

Asia WGS

AF:

0.000577

AC:

AN:

3478

ClinVar

Significance: Benign/Likely benign

Submissions summary: Benign:2

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

not specified

Benign:1

PreventionGenetics, part of Exact Sciences

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

not provided

Benign:1

Dec 24, 2024

Labcorp Genetics (formerly Invitae), Labcorp

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.79

CADD

Benign

8.7

(source)

DANN

Benign

0.47

PhyloP100

0.78

PromoterAI

0.014

Neutral

(source)

Mutation Taster

=100/0

polymorphism

(source)

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

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

Age Distribution

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over