NM_002473.6:c.3485+8C>T

Variant names:

Variant summary

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

The NM_002473.6(MYH9):c.3485+8C>T variant causes a splice region, intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000349 in 1,611,642 control chromosomes in the GnomAD database, including 1 homozygotes. In-silico tool predicts a benign outcome for this variant. 3/3 splice prediction tools predict no significant impact on normal splicing. Variant has been reported in ClinVar as Likely benign (★★).

Frequency

Genomes: 𝑓 0.0018 ( 0 hom., cov: 32)

Exomes 𝑓: 0.00020 ( 1 hom. )

Consequence

MYH9
NM_002473.6 splice_region, intron

Scores

Splicing: ADA: 0.00004774

Clinical Significance

Benign/Likely benign criteria provided, multiple submitters, no conflicts B:6

Conservation

PhyloP100: -4.29

Publications

0 publications found

Variant links:

Genes affected

MYH9 (HGNC:7579): (myosin heavy chain 9) This gene encodes a conventional non-muscle myosin; this protein should not be confused with the unconventional myosin-9a or 9b (MYO9A or MYO9B). The encoded protein is a myosin IIA heavy chain that contains an IQ domain and a myosin head-like domain which is involved in several important functions, including cytokinesis, cell motility and maintenance of cell shape. Defects in this gene have been associated with non-syndromic sensorineural deafness autosomal dominant type 17, Epstein syndrome, Alport syndrome with macrothrombocytopenia, Sebastian syndrome, Fechtner syndrome and macrothrombocytopenia with progressive sensorineural deafness. [provided by RefSeq, Dec 2011]

MYH9 Gene-Disease associations (from GenCC):

autosomal dominant nonsyndromic hearing loss 17
Inheritance: AD Classification: DEFINITIVE, STRONG Submitted by: G2P, Labcorp Genetics (formerly Invitae)
macrothrombocytopenia and granulocyte inclusions with or without nephritis or sensorineural hearing loss
Inheritance: AD Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: G2P, Orphanet, Labcorp Genetics (formerly Invitae), ClinGen
May-Hegglin anomaly
Inheritance: AD Classification: STRONG Submitted by: Genomics England PanelApp
autosomal dominant nonsyndromic hearing loss
Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet

MYH9 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=-0.89).

BP6

Variant 22-36295497-G-A is Benign according to our data. Variant chr22-36295497-G-A is described in ClinVar as Benign/Likely_benign. ClinVar VariationId is 164441.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 = 0.00181 (275/152202) while in subpopulation AFR AF = 0.00593 (246/41508). AF 95% confidence interval is 0.00532. There are 0 homozygotes in GnomAd4. There are 127 alleles in the male GnomAd4 subpopulation. Median coverage is 32. This position passed quality control check.

BS2

High AC in GnomAd4 at 275 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
MYH9	NM_002473.6 link	c.3485+8C>T		splice_region_variant, intron_variant	Intron 26 of 40	ENST00000216181.11	NP_002464.1	P35579-1A0A024R1N1

Ensembl

Gene	Transcript	HGVSc	Effect	Exon rank	TSL	MANE	Protein	UniProt
MYH9	ENST00000216181.11 link	c.3485+8C>T	splice_region_variant, intron_variant	Intron 26 of 40	1	NM_002473.6	ENSP00000216181.6	P35579-1
MYH9	ENST00000685801.1 link	c.3548+8C>T	splice_region_variant, intron_variant	Intron 27 of 41			ENSP00000510688.1	A0A8I5KWT8
MYH9	ENST00000691109.1 link	n.3780+8C>T	splice_region_variant, intron_variant	Intron 20 of 34
MYH9	ENST00000459960.1 link	n.*15C>T	downstream_gene_variant		2

Frequencies

GnomAD3 genomes

AF:

0.00180

AC:

274

AN:

152084

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00592

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00151

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000441

Gnomad OTH

AF:

0.00143

GnomAD2 exomes

AF:

0.000481

AC:

120

AN:

249324

AF XY:

0.000414

show subpopulations

Gnomad AFR exome

AF:

0.00656

Gnomad AMR exome

AF:

0.000347

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.000328

GnomAD4 exome

AF:

0.000197

AC:

288

AN:

1459440

Hom.:

Cov.:

AF XY:

0.000190

AC XY:

138

AN XY:

726034

show subpopulations

African (AFR)

AF:

0.00691

AC:

231

AN:

33430

American (AMR)

AF:

0.000335

AC:

AN:

44710

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26130

East Asian (EAS)

AF:

0.00

AC:

AN:

39700

South Asian (SAS)

AF:

0.00

AC:

AN:

86168

European-Finnish (FIN)

AF:

0.00

AC:

AN:

52676

Middle Eastern (MID)

AF:

0.000436

AC:

AN:

4586

European-Non Finnish (NFE)

AF:

0.00000270

AC:

AN:

1111804

Other (OTH)

AF:

0.000614

AC:

AN:

60236

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.492

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Exome Hom

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

GnomAD4 genome

AF:

0.00181

AC:

275

AN:

152202

Hom.:

Cov.:

AF XY:

0.00171

AC XY:

127

AN XY:

74426

show subpopulations

African (AFR)

AF:

0.00593

AC:

246

AN:

41508

American (AMR)

AF:

0.00150

AC:

AN:

15286

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3470

East Asian (EAS)

AF:

0.00

AC:

AN:

5174

South Asian (SAS)

AF:

0.00

AC:

AN:

4824

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10616

Middle Eastern (MID)

AF:

0.00

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.0000441

AC:

AN:

68004

Other (OTH)

AF:

0.00142

AC:

AN:

2114

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.511

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:

0.00123

Hom.:

Bravo

AF:

0.00210

Asia WGS

AF:

0.000577

AC:

AN:

3478

ClinVar

Significance: Benign/Likely benign

Submissions summary: Benign:6

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

not specified

Benign:2

Apr 30, 2012

Laboratory for Molecular Medicine, Mass General Brigham Personalized Medicine

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

3485+8C>T in Intron 26 of MYH9: This variant is not expected to have clinical si gnificance because it is not located within the conserved splice consensus seque nce and has been identified in 0.6% (22/3738) of African American chromosomes fr om a broad population by the NHLBI Exome Sequencing Project (http://evs.gs.washi ngton.edu/EVS; dbSNP rs149559551). -

Jan 19, 2017

Eurofins Ntd Llc (ga)

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

not provided

Benign:2

Feb 03, 2025

Labcorp Genetics (formerly Invitae), Labcorp

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Jul 12, 2018

GeneDx

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Autosomal dominant nonsyndromic hearing loss 17

Benign:1

Jan 12, 2018

Illumina Laboratory Services, Illumina

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

This variant was observed in the ICSL laboratory as part of a predisposition screen in an ostensibly healthy population. It had not been previously curated by ICSL or reported in the Human Gene Mutation Database (HGMD: prior to June 1st, 2018), and was therefore a candidate for classification through an automated scoring system. Utilizing variant allele frequency, disease prevalence and penetrance estimates, and inheritance mode, an automated score was calculated to assess if this variant is too frequent to cause the disease. Based on the score and internal cut-off values, a variant classified as benign is not then subjected to further curation. The score for this variant resulted in a classification of benign for this disease. -

MYH9-related disorder

Benign:1

Jan 12, 2018

Illumina Laboratory Services, Illumina

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

-0.89

CADD

Benign

0.038

(source)

DANN

Benign

0.68

PhyloP100

-4.3

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.1

Mutation Taster

=100/0

polymorphism

(source)

Splicing

Name

Calibrated prediction

Score

Prediction

dbscSNV1_ADA

Benign

0.000048

dbscSNV1_RF

Benign

0.028

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