chr22-36281464-T-A

Variant names:

• chr22-36281464-T-A
• rs56360445
• NM_002473.6:c.*1204A>T

Variant summary

Our verdict is Benign. The variant received -9 ACMG points: 0P and 9B. BP4_Strong BS1_Supporting BS2

The NM_002473.6(MYH9):​c.*1204A>T variant causes a 3 prime UTR change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00143 in 228,604 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency:
  • Genomes: 𝑓 0.0013 (0 hom., cov: 33)
  • Exomes 𝑓: 0.0017 (0 hom.)
• Consequence: MYH9 NM_002473.6 3_prime_UTR
• Clinical Significance: Uncertain significance criteria provided, single submitter U:2
• Conservation: PhyloP100: -0.480
• 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: 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: Labcorp Genetics (formerly Invitae), Orphanet, G2P, 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

ACMG classification

Our verdict: Benign. The variant received -9 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.86).
• BS1: Variant frequency is greater than expected in population nfe. GnomAd4 allele frequency = 0.00131 (199/152242) while in subpopulation NFE AF = 0.00216 (147/68024). AF 95% confidence interval is 0.00188. There are 0 homozygotes in GnomAd4. There are 87 alleles in the male GnomAd4 subpopulation. Median coverage is 33. This position passed quality control check. Existence of Clinvar submissions makes me limit the strength of this signal to Supporting
• BS2: High AC in GnomAd4 at 199 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.*1204A>T		3_prime_UTR	Exon 41 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.*1204A>T		3_prime_UTR	Exon 41 of 41	ENSP00000216181.6	P35579-1
	MYH9	ENST00000685801.1		c.*1204A>T		3_prime_UTR	Exon 42 of 42	ENSP00000510688.1	A0A8I5KWT8
	MYH9	ENST00000955568.1		c.*1204A>T		3_prime_UTR	Exon 42 of 42	ENSP00000625627.1

Frequencies

GnomAD3 genomes AF: 0.00131 AC: 199 AN: 152124 Hom.: 0 Cov.: 33

Gnomad AFR AF: 0.000362

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.00216

Gnomad ASJ AF: 0.00

Gnomad EAS AF: 0.00

Gnomad SAS AF: 0.00

Gnomad FIN AF: 0.000283

Gnomad MID AF: 0.00

Gnomad NFE AF: 0.00216

Gnomad OTH AF: 0.000478

GnomAD4 exome AF: 0.00166 AC: 127 AN: 76362 Hom.: 0 Cov.: 0 AF XY: 0.00190 AC XY: 67 AN XY: 35214

African (AFR) AF: 0.000826 AC: 3 AN: 3630

American (AMR) AF: 0.00347 AC: 8 AN: 2306

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 4784

East Asian (EAS) AF: 0.00 AC: 0 AN: 10800

South Asian (SAS) AF: 0.00 AC: 0 AN: 656

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 432

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 468

European-Non Finnish (NFE) AF: 0.00222 AC: 104 AN: 46942

Other (OTH) AF: 0.00189 AC: 12 AN: 6344

GnomAD4 genome AF: 0.00131 AC: 199 AN: 152242 Hom.: 0 Cov.: 33 AF XY: 0.00117 AC XY: 87 AN XY: 74426

African (AFR) AF: 0.000361 AC: 15 AN: 41530

American (AMR) AF: 0.00216 AC: 33 AN: 15274

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 3472

East Asian (EAS) AF: 0.00 AC: 0 AN: 5190

South Asian (SAS) AF: 0.00 AC: 0 AN: 4824

European-Finnish (FIN) AF: 0.000283 AC: 3 AN: 10608

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 294

European-Non Finnish (NFE) AF: 0.00216 AC: 147 AN: 68024

Other (OTH) AF: 0.000473 AC: 1 AN: 2114

Alfa AF: 0.000212 Hom.: 0

Bravo AF: 0.00161

Asia WGS AF: 0.000289 AC: 1 AN: 3478

ClinVar

ClinVar submissions as Germline

Significance: Uncertain significance

Revision: criteria provided, single submitter

Pathogenic	VUS	Benign	Condition
-	1	-	Autosomal dominant nonsyndromic hearing loss 17 (1)
-	1	-	MYH9-related disorder (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.86
CADD	Benign	0.16
DANN	Benign	0.37
PhyloP100		-0.48

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: rs56360445; hg19: chr22-36677510;