22-36300975-C-A

Variant names:

• chr22-36300975-C-A
• rs727503289
• NM_002473.6:c.2714G>T

Variant summary

Our verdict is Likely benign. The variant received -3 ACMG points: 1P and 4B. PP3 BS2

The NM_002473.6(MYH9):​c.2714G>T​(p.Arg905Leu) variant causes a missense change. The variant allele was found at a frequency of 0.0000048 in 1,459,380 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. R905C) has been classified as Likely benign.

• Frequency:
  • Genomes: not found (cov: 33)
  • Exomes 𝑓: 0.0000048 (0 hom.)
• Consequence: MYH9 NM_002473.6 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 6.17
• Publications: 0 publications found

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: Labcorp Genetics (formerly Invitae), G2P
• macrothrombocytopenia and granulocyte inclusions with or without nephritis or sensorineural hearing loss

  Inheritance: AD Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: G2P, ClinGen, Labcorp Genetics (formerly Invitae), Orphanet
• May-Hegglin anomaly

  Inheritance: AD Classification: STRONG Submitted by: Genomics England PanelApp
• autosomal dominant nonsyndromic hearing loss

  Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet

ACMG classification

Our verdict: Likely_benign. The variant received -3 ACMG points.

• PP3: MetaRNN computational evidence supports a deleterious effect, 0.792
• BS2: High AC in GnomAdExome4 at 7 AD gene.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_002473.6. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	MYH9	NM_002473.6	MANE Select	c.2714G>T	p.Arg905Leu	missense	Exon 22 of 41	NP_002464.1	P35579-1

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	MYH9	ENST00000216181.11	TSL:1 MANE Select	c.2714G>T	p.Arg905Leu	missense	Exon 22 of 41	ENSP00000216181.6	P35579-1
	MYH9	ENST00000685801.1		c.2777G>T	p.Arg926Leu	missense	Exon 23 of 42	ENSP00000510688.1	A0A8I5KWT8
	MYH9	ENST00000955568.1		c.2777G>T	p.Arg926Leu	missense	Exon 23 of 42	ENSP00000625627.1

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome AF: 0.00000480 AC: 7 AN: 1459380 Hom.: 0 Cov.: 33 AF XY: 0.00000551 AC XY: 4 AN XY: 726142

African (AFR) AF: 0.00 AC: 0 AN: 33480

American (AMR) AF: 0.00 AC: 0 AN: 44722

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26136

East Asian (EAS) AF: 0.00 AC: 0 AN: 39700

South Asian (SAS) AF: 0.00 AC: 0 AN: 86258

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 50950

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5768

European-Non Finnish (NFE) AF: 0.00000540 AC: 6 AN: 1111994

Other (OTH) AF: 0.0000166 AC: 1 AN: 60372

GnomAD4 genome Cov.: 33

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	0.65
BayesDel_addAF	Pathogenic	0.47	D
BayesDel_noAF	Pathogenic	0.44
CADD	Pathogenic	28
DANN	Uncertain	1.0
DEOGEN2	Uncertain	0.79	D
Eigen	Uncertain	0.64
Eigen_PC	Uncertain	0.64
FATHMM_MKL	Uncertain	0.96	D
LIST_S2	Pathogenic	0.98	D
M_CAP	Pathogenic	0.50	D
MetaRNN	Pathogenic	0.79	D
MetaSVM	Pathogenic	0.81	D
MutationAssessor	Uncertain	2.3	M
PhyloP100		6.2
PrimateAI	Uncertain	0.74	T
PROVEAN	Pathogenic	-6.2	D
REVEL	Pathogenic	0.80
Sift	Uncertain	0.016	D
Sift4G	Benign	0.12	T
Polyphen		0.92	P
Vest4		0.77
MutPred		0.41		Loss of methylation at R903 (P = 0.0421)
MVP		0.97
MPC		1.6
ClinPred		1.0	D
GERP RS		5.2
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.8
Varity_R		0.68
gMVP		0.54
Mutation Taster		=35/65	disease causing

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

Other links and lift over

dbSNP: rs727503289; hg19: chr22-36697021;