dbSNP rs143400779: MYO5A:c.4239+20C>T (chr15-52340176-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.4239+20C>T variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0024 in 1,613,768 control chromosomes in the GnomAD database, including 8 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★★).

Frequency

Genomes: 𝑓 0.0022 ( 0 hom., cov: 32)

Exomes 𝑓: 0.0024 ( 8 hom. )

Consequence

MYO5A
NM_001382347.1 intron

Scores

Clinical Significance

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

Conservation

PhyloP100: 0.544

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=-0.8).

BP6

Variant 15-52340176-G-A is Benign according to our data. Variant chr15-52340176-G-A is described in ClinVar as Benign/Likely_benign. ClinVar VariationId is 255653.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

BS1

Variant frequency is greater than expected in population nfe. GnomAd4 allele frequency = 0.00215 (328/152288) while in subpopulation NFE AF = 0.0036 (245/67998). AF 95% confidence interval is 0.00323. There are 0 homozygotes in GnomAd4. There are 150 alleles in the male GnomAd4 subpopulation. Median coverage is 32. This position passed quality control check.

BS2

High Homozygotes in GnomAdExome4 at 8 AR gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
MYO5A	NM_001382347.1 link	c.4239+20C>T		intron_variant	Intron 32 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.4239+20C>T		intron_variant	Intron 32 of 41	5	NM_001382347.1	ENSP00000382179.4		Q9Y4I1-3F8WE88

Frequencies

GnomAD3 genomes

AF:

0.00215

AC:

327

AN:

152170

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000700

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00150

Gnomad ASJ

AF:

0.000289

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00166

Gnomad FIN

AF:

0.00104

Gnomad MID

AF:

0.00949

Gnomad NFE

AF:

0.00360

Gnomad OTH

AF:

0.00336

GnomAD2 exomes

AF:

0.00191

AC:

473

AN:

247802

AF XY:

0.00194

show subpopulations

Gnomad AFR exome

AF:

0.000129

Gnomad AMR exome

AF:

0.000898

Gnomad ASJ exome

AF:

0.0000994

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00186

Gnomad NFE exome

AF:

0.00314

Gnomad OTH exome

AF:

0.00314

GnomAD4 exome

AF:

0.00242

AC:

3543

AN:

1461480

Hom.:

Cov.:

AF XY:

0.00248

AC XY:

1801

AN XY:

727086

show subpopulations

African (AFR)

AF:

0.000299

AC:

AN:

33478

American (AMR)

AF:

0.00107

AC:

AN:

44724

Ashkenazi Jewish (ASJ)

AF:

0.0000765

AC:

AN:

26134

East Asian (EAS)

AF:

0.00

AC:

AN:

39700

South Asian (SAS)

AF:

0.00109

AC:

AN:

86194

European-Finnish (FIN)

AF:

0.00191

AC:

102

AN:

53394

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5762

European-Non Finnish (NFE)

AF:

0.00286

AC:

3182

AN:

1111706

Other (OTH)

AF:

0.00174

AC:

105

AN:

60388

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.486

Heterozygous variant carriers

177

354

532

709

886

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Exome Hom

Variant carriers

112

224

336

448

560

<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:

0.00215

AC:

328

AN:

152288

Hom.:

Cov.:

AF XY:

0.00201

AC XY:

150

AN XY:

74474

show subpopulations

African (AFR)

AF:

0.000698

AC:

AN:

41574

American (AMR)

AF:

0.00150

AC:

AN:

15310

Ashkenazi Jewish (ASJ)

AF:

0.000289

AC:

AN:

3466

East Asian (EAS)

AF:

0.00

AC:

AN:

5190

South Asian (SAS)

AF:

0.00166

AC:

AN:

4826

European-Finnish (FIN)

AF:

0.00104

AC:

AN:

10612

Middle Eastern (MID)

AF:

0.0136

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.00360

AC:

245

AN:

67998

Other (OTH)

AF:

0.00332

AC:

AN:

2106

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.500

Heterozygous variant carriers

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:

0.00303

Hom.:

Bravo

AF:

0.00175

Asia WGS

AF:

0.00115

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

Feb 02, 2025

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

-0.80

CADD

Benign

3.1

(source)

DANN

Benign

0.78

PhyloP100

0.54

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