chr22-36301054-T-G

Variant names:

Variant summary

Our verdict is Benign. Variant got -19 ACMG points: 1P and 20B. PP2BP4_StrongBP6_Very_StrongBS1BS2

The NM_002473.6(MYH9):c.2635A>C(p.Met879Leu) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000152 in 1,609,246 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 15/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★★).

Frequency

Genomes: 𝑓 0.000085 ( 0 hom., cov: 33)

Exomes 𝑓: 0.00016 ( 0 hom. )

Consequence

MYH9
NM_002473.6 missense

Scores

Clinical Significance

Benign/Likely benign criteria provided, multiple submitters, no conflicts B:5

Conservation

PhyloP100: 0.938

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 -19 ACMG points.

PP2

Missense variant in the MYH9 gene, where missense mutations are typically associated with disease (based on misZ statistic). The gene has 43 curated pathogenic missense variants (we use a threshold of 10). The gene has 84 curated benign missense variants. Gene score misZ: 3.473 (above the threshold of 3.09). Trascript score misZ: 6.1231 (above the threshold of 3.09). GenCC associations: The gene is linked to 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=0.0071069896).

BP6

Variant 22-36301054-T-G is Benign according to our data. Variant chr22-36301054-T-G is described in ClinVar as [Likely_benign]. Clinvar id is 164450.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars. Variant chr22-36301054-T-G is described in Lovd as [Likely_benign].

BS1

Variant frequency is greater than expected in population eas. gnomad4 allele frequency = 0.0000853 (13/152326) while in subpopulation EAS AF= 0.00231 (12/5184). AF 95% confidence interval is 0.00134. There are 0 homozygotes in gnomad4. There are 7 alleles in male gnomad4 subpopulation. Median coverage is 33. This position pass quality control queck.

BS2

High AC in GnomAd4 at 13 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
MYH9	NM_002473.6 link	c.2635A>C	p.Met879Leu	missense_variant	Exon 22 of 41	ENST00000216181.11	NP_002464.1	P35579-1A0A024R1N1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	UniProt
MYH9	ENST00000216181.11 link	c.2635A>C	p.Met879Leu	missense_variant	Exon 22 of 41	1	NM_002473.6	ENSP00000216181.6	P35579-1
MYH9	ENST00000685801.1 link	c.2698A>C	p.Met900Leu	missense_variant	Exon 23 of 42			ENSP00000510688.1	A0A8I5KWT8
MYH9	ENST00000495928.1 link	n.185A>C		non_coding_transcript_exon_variant	Exon 2 of 2	2
MYH9	ENST00000691109.1 link	n.2930A>C		non_coding_transcript_exon_variant	Exon 16 of 35

Frequencies

GnomAD3 genomes

AF:

0.0000854

AC:

AN:

152208

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00231

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.00

Gnomad OTH

AF:

0.000478

GnomAD3 exomes

AF:

0.000231

AC:

AN:

247016

Hom.:

AF XY:

0.000194

AC XY:

AN XY:

134068

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.0000578

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00288

Gnomad SAS exome

AF:

0.0000327

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.000164

GnomAD4 exome

AF:

0.000159

AC:

232

AN:

1456920

Hom.:

Cov.:

AF XY:

0.000172

AC XY:

125

AN XY:

724920

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.0000447

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00544

Gnomad4 SAS exome

AF:

0.0000116

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00000540

Gnomad4 OTH exome

AF:

0.000116

GnomAD4 genome

AF:

0.0000853

AC:

AN:

152326

Hom.:

Cov.:

AF XY:

0.0000940

AC XY:

AN XY:

74494

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00231

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.00

Gnomad4 OTH

AF:

0.000473

Bravo

AF:

0.0000680

ExAC

AF:

0.000280

AC:

ClinVar

Significance: Benign/Likely benign

Submissions summary: Benign:5

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

MYH9-related disorder

Benign:2

Mar 02, 2020

PreventionGenetics, part of Exact Sciences

Significance: Likely benign

Review Status: no assertion criteria provided

Collection Method: clinical testing

This variant is classified as likely benign based on ACMG/AMP sequence variant interpretation guidelines (Richards et al. 2015 PMID: 25741868, with internal and published modifications). -

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. -

Autosomal dominant nonsyndromic hearing loss 17

Benign:1

Jan 12, 2018

Illumina Laboratory Services, Illumina

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

not specified

Benign:1

Jun 12, 2013

Laboratory for Molecular Medicine, Mass General Brigham Personalized Medicine

Significance: Likely benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The Met879Leu in Exon 22 of MYH9: This variant is not expected to have clinical significance due to a lack of conservation across species, including mammals. Of note, cow, lizard and puffer fish have a leucine (Leu) at this position despite high nearby amino acid conservation. In addition, computational analyses (PolyP hen2, SIFT, AlignGVGD) do not suggest a high likelihood of impact to the protein . This variant has been identified in 1/8600 of European American chromosomes by the NHLBI Exome Sequencing Project and in 1% (2/200) Chinese chromosomes by the 1000 Genomes Project (http://evs.gs.washington.edu/EVS/; dbSNP rs200328859). -

not provided

Benign:1

Jan 23, 2025

Labcorp Genetics (formerly Invitae), Labcorp

Significance: Likely benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.073

BayesDel_addAF

Benign

-0.49

BayesDel_noAF

Benign

-0.48

CADD

Benign

DANN

Benign

0.78

DEOGEN2

Benign

0.26

Eigen

Benign

-0.70

Eigen_PC

Benign

-0.44

FATHMM_MKL

Uncertain

0.88

LIST_S2

Benign

0.60

M_CAP

Benign

0.0054

MetaRNN

Benign

0.0071

MetaSVM

Benign

-1.0

MutationAssessor

Benign

-1.2

PrimateAI

Uncertain

0.57

PROVEAN

Benign

-0.51

REVEL

Benign

0.088

Sift

Benign

0.92

Sift4G

Benign

1.0

Polyphen

0.0

Vest4

0.21

MutPred

0.39

Gain of catalytic residue at M879 (P = 0.2026);

MVP

0.39

MPC

0.47

ClinPred

0.018

GERP RS

4.1

Varity_R

0.092

gMVP

0.15

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