22-36292022-C-T

Position:

• chr22-36292022-C-T

Variant summary

Our verdict is Benign. Variant got -21 ACMG points: 0P and 21B. BP4_Strong BP6_Very_Strong BP7 BS1 BS2

The NM_002473.6(MYH9):​c.4308G>A​(p.Ala1436=) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000929 in 1,614,186 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 Likely benign (★★).

• Frequency:
  • Genomes: 𝑓 0.00014 (0 hom., cov: 32)
  • Exomes 𝑓: 0.000088 (0 hom.)
• Consequence: MYH9 NM_002473.6 synonymous
• Clinical Significance: Likely benign criteria provided, multiple submitters, no conflicts B:5
• Conservation: PhyloP100: 0.156

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]

ACMG classification

Verdict is Benign. Variant got -21 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.6).
• BP6: Variant 22-36292022-C-T is Benign according to our data. Variant chr22-36292022-C-T is described in ClinVar as [Likely_benign]. Clinvar id is 164436.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.
• BP7: Synonymous conserved (PhyloP=0.156 with no splicing effect.
• BS1: Variant frequency is greater than expected in population afr. gnomad4 allele frequency = 0.000138 (21/152354) while in subpopulation AFR AF= 0.000192 (8/41588). AF 95% confidence interval is 0.0000954. There are 0 homozygotes in gnomad4. There are 9 alleles in male gnomad4 subpopulation. Median coverage is 32. This position pass quality control queck.
• BS2: High AC in GnomAd4 at 21 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
MYH9	NM_002473.6	c.4308G>A	p.Ala1436=	synonymous_variant	31/41	ENST00000216181.11	NP_002464.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
MYH9	ENST00000216181.11	c.4308G>A	p.Ala1436=	synonymous_variant	31/41	1	NM_002473.6	ENSP00000216181	P1
MYH9	ENST00000685801.1	c.4371G>A	p.Ala1457=	synonymous_variant	32/42			ENSP00000510688
MYH9	ENST00000691109.1	n.4603G>A		non_coding_transcript_exon_variant	25/35

Frequencies

GnomAD3 genomes AF: 0.000138 AC: 21 AN: 152236 Hom.: 0 Cov.: 32

Gnomad AFR AF: 0.000193

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.0000654

Gnomad ASJ AF: 0.00

Gnomad EAS AF: 0.00

Gnomad SAS AF: 0.00

Gnomad FIN AF: 0.0000941

Gnomad MID AF: 0.00316

Gnomad NFE AF: 0.000132

Gnomad OTH AF: 0.000478

GnomAD3 exomes AF: 0.000127 AC: 32 AN: 251288 Hom.: 0 AF XY: 0.000118 AC XY: 16 AN XY: 135860

Gnomad AFR exome AF: 0.000308

Gnomad AMR exome AF: 0.00

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.000163

Gnomad SAS exome AF: 0.0000327

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.000194

Gnomad OTH exome AF: 0.000163

GnomAD4 exome AF: 0.0000882 AC: 129 AN: 1461832 Hom.: 0 Cov.: 32 AF XY: 0.000103 AC XY: 75 AN XY: 727222

Gnomad4 AFR exome AF: 0.000149

Gnomad4 AMR exome AF: 0.0000447

Gnomad4 ASJ exome AF: 0.0000765

Gnomad4 EAS exome AF: 0.0000504

Gnomad4 SAS exome AF: 0.0000116

Gnomad4 FIN exome AF: 0.0000562

Gnomad4 NFE exome AF: 0.0000926

Gnomad4 OTH exome AF: 0.000132

GnomAD4 genome AF: 0.000138 AC: 21 AN: 152354 Hom.: 0 Cov.: 32 AF XY: 0.000121 AC XY: 9 AN XY: 74506

Gnomad4 AFR AF: 0.000192

Gnomad4 AMR AF: 0.0000653

Gnomad4 ASJ AF: 0.00

Gnomad4 EAS AF: 0.00

Gnomad4 SAS AF: 0.00

Gnomad4 FIN AF: 0.0000941

Gnomad4 NFE AF: 0.000132

Gnomad4 OTH AF: 0.000473

Alfa AF: 0.000212 Hom.: 0

Bravo AF: 0.000136

EpiCase AF: 0.000109

EpiControl AF: 0.000119

ClinVar

Significance: Likely benign

Submissions summary: Benign:5

Revision: criteria provided, multiple submitters, no conflicts

Submissions by phenotype

not provided Benign:3

Likely benign, criteria provided, single submitter	clinical testing	Labcorp Genetics (formerly Invitae), Labcorp	Jan 09, 2024	- -
Likely benign, criteria provided, single submitter	clinical testing	GeneDx	Nov 24, 2020	- -
Likely benign, criteria provided, single submitter	clinical testing	CeGaT Center for Human Genetics Tuebingen	Apr 01, 2024	MYH9: BP4, BP7 -

not specified Benign:2

Likely benign, criteria provided, single submitter	clinical testing	PreventionGenetics, part of Exact Sciences	-	- -
Likely benign, criteria provided, single submitter	clinical testing	Laboratory for Molecular Medicine, Mass General Brigham Personalized Medicine	Mar 08, 2016	p.Ala1436Ala in exon 31 of MYH9: This variant is not expected to have clinical s ignificance because it does not alter an amino acid residue, is not located with in the splice consensus sequence, and has been identified in 17/66670 European c hromosomes by the Exome Aggregation Consortium (ExAC, http://exac.broadinstitute .org; dbSNP rs369577944). -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.60
CADD	Benign	5.9
DANN	Benign	0.74
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.1

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

Other links and lift over

dbSNP: rs369577944; hg19: chr22-36688068;