22-36349101-G-A

Position:

chr22-36349101-G-A

Variant summary

Our verdict is Benign. Variant got -17 ACMG points: 3P and 20B. PM1PP2BP4_StrongBP6_Very_StrongBS1BS2

The NM_002473.6(MYH9):c.136C>T(p.Leu46Phe) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00452 in 1,614,202 control chromosomes in the GnomAD database, including 74 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★★). Synonymous variant affecting the same amino acid position (i.e. L46L) has been classified as Likely benign.

Frequency

Genomes: 𝑓 0.0052 ( 12 hom., cov: 32)

Exomes 𝑓: 0.0044 ( 62 hom. )

Consequence

MYH9
NM_002473.6 missense

Scores

Clinical Significance

Benign/Likely benign criteria provided, multiple submitters, no conflicts B:13O:1

Conservation

PhyloP100: 0.602

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 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -17 ACMG points.

PM1

In a hotspot region, there are 2 aminoacids with missense pathogenic changes in the window of +-8 aminoacids around while only 1 benign, 6 uncertain in NM_002473.6

PP2

Missense variant in gene, where missense usually causes diseases (based on misZ statistic), MYH9. . Gene score misZ 3.473 (greater than the threshold 3.09). Trascript score misZ 6.1231 (greater than threshold 3.09). GenCC has associacion of gene with May-Hegglin anomaly, autosomal dominant nonsyndromic hearing loss, macrothrombocytopenia and granulocyte inclusions with or without nephritis or sensorineural hearing loss, autosomal dominant nonsyndromic hearing loss 17.

BP4

Computational evidence support a benign effect (MetaRNN=0.009099573).

BP6

Variant 22-36349101-G-A is Benign according to our data. Variant chr22-36349101-G-A is described in ClinVar as [Likely_benign]. Clinvar id is 178438.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars. Variant chr22-36349101-G-A is described in Lovd as [Benign]. Variant chr22-36349101-G-A is described in Lovd as [Likely_benign].

BS1

Variant frequency is greater than expected in population nfe. gnomad4 allele frequency = 0.00521 (793/152314) while in subpopulation NFE AF= 0.00395 (269/68038). AF 95% confidence interval is 0.00356. There are 12 homozygotes in gnomad4. There are 521 alleles in male gnomad4 subpopulation. Median coverage is 32. This position pass quality control queck.

BS2

High AC in GnomAd4 at 793 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
MYH9	NM_002473.6 linkuse as main transcript	c.136C>T	p.Leu46Phe	missense_variant	2/41	ENST00000216181.11

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
MYH9	ENST00000216181.11 linkuse as main transcript	c.136C>T	p.Leu46Phe	missense_variant	2/41	1	NM_002473.6	P1	P35579-1

Frequencies

GnomAD3 genomes

AF:

0.00521

AC:

793

AN:

152196

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000555

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000524

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.000414

Gnomad FIN

AF:

0.0459

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.00395

Gnomad OTH

AF:

0.00191

GnomAD3 exomes

AF:

0.00604

AC:

1519

AN:

251398

Hom.:

AF XY:

0.00601

AC XY:

817

AN XY:

135886

show subpopulations

Gnomad AFR exome

AF:

0.000800

Gnomad AMR exome

AF:

0.000549

Gnomad ASJ exome

AF:

0.0000992

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.000261

Gnomad FIN exome

AF:

0.0449

Gnomad NFE exome

AF:

0.00423

Gnomad OTH exome

AF:

0.00407

GnomAD4 exome

AF:

0.00445

AC:

6503

AN:

1461888

Hom.:

Cov.:

AF XY:

0.00435

AC XY:

3167

AN XY:

727242

show subpopulations

Gnomad4 AFR exome

AF:

0.000538

Gnomad4 AMR exome

AF:

0.000648

Gnomad4 ASJ exome

AF:

0.000191

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.000313

Gnomad4 FIN exome

AF:

0.0383

Gnomad4 NFE exome

AF:

0.00379

Gnomad4 OTH exome

AF:

0.00267

GnomAD4 genome

AF:

0.00521

AC:

793

AN:

152314

Hom.:

Cov.:

AF XY:

0.00699

AC XY:

521

AN XY:

74482

show subpopulations

Gnomad4 AFR

AF:

0.000553

Gnomad4 AMR

AF:

0.000523

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.000414

Gnomad4 FIN

AF:

0.0459

Gnomad4 NFE

AF:

0.00395

Gnomad4 OTH

AF:

0.00189

Alfa

AF:

0.00343

Hom.:

Bravo

AF:

0.00187

TwinsUK

AF:

0.00270

AC:

ALSPAC

AF:

0.00337

AC:

ESP6500AA

AF:

0.000454

AC:

ESP6500EA

AF:

0.00291

AC:

ExAC

AF:

0.00526

AC:

639

Asia WGS

AF:

0.000577

AC:

AN:

3478

EpiCase

AF:

0.00273

EpiControl

AF:

0.00332

ClinVar

Significance: Benign/Likely benign

Submissions summary: Benign:13Other:1

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

not provided

Benign:7

Benign, criteria provided, single submitter	clinical testing	GeneDx	Oct 01, 2018	This variant is associated with the following publications: (PMID: 30245029, 29090586, 29110756, 25077172, 24130771) -
Benign, criteria provided, single submitter	clinical testing	ARUP Laboratories, Molecular Genetics and Genomics, ARUP Laboratories	Feb 05, 2021	- -
Benign, criteria provided, single submitter	clinical testing	Athena Diagnostics	Apr 17, 2019	- -
Likely benign, no assertion criteria provided	clinical testing	Clinical Genetics DNA and cytogenetics Diagnostics Lab, Erasmus MC, Erasmus Medical Center	-	- -
Likely benign, criteria provided, single submitter	clinical testing	CeGaT Center for Human Genetics Tuebingen	Jun 01, 2024	MYH9: BS1 -
Likely benign, criteria provided, single submitter	not provided	Breakthrough Genomics, Breakthrough Genomics	-	- -
Benign, criteria provided, single submitter	clinical testing	Labcorp Genetics (formerly Invitae), Labcorp	Jan 25, 2024	- -

not specified

Benign:4

Benign, criteria provided, single submitter	clinical testing	Laboratory for Molecular Medicine, Mass General Brigham Personalized Medicine	Jun 08, 2015	Leu46Phe in exon 2 of MYH9: This variant is not expected to have clinical signif icance because it has been identified in 4.5% (295/6600) of Finnish chromosomes including 5 homozygotes by the Exome Aggregation Consortium (ExAC, http://exac.b roadinstitute.org; dbSNP rs147122501). -
Benign, criteria provided, single submitter	clinical testing	Eurofins Ntd Llc (ga)	May 12, 2015	- -
Benign, no assertion criteria provided	clinical testing	Laboratory of Diagnostic Genome Analysis, Leiden University Medical Center (LUMC)	-	- -
Benign, no assertion criteria provided	clinical testing	Joint Genome Diagnostic Labs from Nijmegen and Maastricht, Radboudumc and MUMC+	-	- -

Autosomal dominant nonsyndromic hearing loss 17

Benign:1

Likely benign, criteria provided, single submitter

clinical testing

Illumina Laboratory Services, Illumina

Jan 13, 2018

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 likely benign is not then subjected to further curation. The score for this variant resulted in a classification of likely benign for this disease. -

MYH9-related disorder

Benign:1

Benign, criteria provided, single submitter

clinical testing

Illumina Laboratory Services, Illumina

Jan 13, 2018

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. -

Autosomal dominant nonsyndromic hearing loss 17;C4551953:Vitelliform macular dystrophy 1;C5200934:Macrothrombocytopenia and granulocyte inclusions with or without nephritis or sensorineural hearing loss

Other:1

not provided, no classification provided

phenotyping only

GenomeConnect, ClinGen

GenomeConnect assertions are reported exactly as they appear on the patient-provided report from the testing laboratory. GenomeConnect staff make no attempt to reinterpret the clinical significance of the variant. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.25

BayesDel_addAF

Benign

-0.28

BayesDel_noAF

Benign

-0.17

CADD

Uncertain

DANN

Uncertain

1.0

DEOGEN2

Uncertain

0.78

D;D;D

Eigen

Uncertain

0.42

Eigen_PC

Uncertain

0.45

FATHMM_MKL

Uncertain

0.78

LIST_S2

Uncertain

0.96

D;D;D

MetaRNN

Benign

0.0091

T;T;T

MetaSVM

Uncertain

-0.043

MutationAssessor

Benign

2.0

M;.;.

MutationTaster

Benign

0.90

D;D

PrimateAI

Uncertain

0.54

PROVEAN

Uncertain

-2.5

N;N;D

REVEL

Uncertain

0.54

Sift

Uncertain

0.0020

D;D;D

Sift4G

Uncertain

0.0030

D;D;D

Polyphen

0.89

P;P;.

Vest4

0.30

MVP

0.74

MPC

1.5

ClinPred

0.028

GERP RS

5.3

Varity_R

0.31

gMVP

0.74

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

Below is the list of publications found by LitVar. It may be empty.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over