chr6-75817304-C-CAAAAA

Variant names:

• chr6-75817304-C-CAAAAA
• rs759910571
• NM_004999.4:c.-47-183_-47-179dupAAAAA

Variant summary

Our verdict is Benign. The variant received -10 ACMG points: 0P and 10B. BP6_Moderate BS1 BS2

The NM_004999.4(MYO6):​c.-47-183_-47-179dupAAAAA variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00515 in 62,962 control chromosomes in the GnomAD database, including 2 homozygotes. Variant has been reported in ClinVar as Likely benign (★).

• Frequency: Genomes: 𝑓 0.0051 (2 hom., cov: 31)
• Consequence: MYO6 NM_004999.4 intron
• Clinical Significance: Likely benign criteria provided, single submitter B:1
• Conservation: PhyloP100: -0.194
• Publications: 0 publications found

Genes affected

MYO6 (HGNC:7605): (myosin VI) This gene encodes a reverse-direction motor protein that moves toward the minus end of actin filaments and plays a role in intracellular vesicle and organelle transport. The protein consists of a motor domain containing an ATP- and an actin-binding site and a globular tail which interacts with other proteins. This protein maintains the structural integrity of inner ear hair cells and mutations in this gene cause non-syndromic autosomal dominant and recessive hearing loss. Alternative splicing results in multiple transcript variants encoding distinct isoforms. [provided by RefSeq, Jul 2014]

MYO6 Gene-Disease associations (from GenCC):

• autosomal dominant nonsyndromic hearing loss 22

  Inheritance: AD Classification: DEFINITIVE, STRONG Submitted by: Ambry Genetics, Labcorp Genetics (formerly Invitae), PanelApp Australia
• nonsyndromic genetic hearing loss

  Inheritance: AD, AR Classification: DEFINITIVE, MODERATE Submitted by: ClinGen, G2P
• autosomal recessive nonsyndromic hearing loss 37

  Inheritance: AR Classification: STRONG, MODERATE Submitted by: PanelApp Australia, Labcorp Genetics (formerly Invitae), Ambry Genetics
• autosomal dominant nonsyndromic hearing loss

  Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
• progressive sensorineural hearing loss-hypertrophic cardiomyopathy syndrome

  Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
• hearing loss, autosomal recessive

  Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet

ACMG classification

Our verdict: Benign. The variant received -10 ACMG points.

• BP6: Variant 6-75817304-C-CAAAAA is Benign according to our data. Variant chr6-75817304-C-CAAAAA is described in ClinVar as [Likely_benign]. Clinvar id is 1187980.Status of the report is criteria_provided_single_submitter, 1 stars.
• BS1: Variant frequency is greater than expected in population afr. GnomAd4 allele frequency = 0.00515 (324/62962) while in subpopulation AFR AF = 0.0155 (298/19242). AF 95% confidence interval is 0.014. There are 2 homozygotes in GnomAd4. There are 153 alleles in the male GnomAd4 subpopulation. Median coverage is 31. This position passed quality control check.
• BS2: High Homozygotes in GnomAd4 at 2 AD,AR gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
MYO6	NM_004999.4	c.-47-183_-47-179dupAAAAA		intron_variant	Intron 1 of 34	ENST00000369977.8	NP_004990.3

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
MYO6	ENST00000369977.8	c.-47-197_-47-196insAAAAA		intron_variant	Intron 1 of 34	1	NM_004999.4	ENSP00000358994.3

Frequencies

GnomAD3 genomes AF: 0.00515 AC: 324 AN: 62942 Hom.: 2 Cov.: 31

Gnomad AFR AF: 0.0155

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.00132

Gnomad ASJ AF: 0.00

Gnomad EAS AF: 0.00109

Gnomad SAS AF: 0.00329

Gnomad FIN AF: 0.00

Gnomad MID AF: 0.00

Gnomad NFE AF: 0.000143

Gnomad OTH AF: 0.00591

We have no GnomAD4 exomes data on this position. Probably position not covered by the project.

GnomAD4 genome AF: 0.00515 AC: 324 AN: 62962 Hom.: 2 Cov.: 31 AF XY: 0.00516 AC XY: 153 AN XY: 29672

African (AFR) AF: 0.0155 AC: 298 AN: 19242

American (AMR) AF: 0.00132 AC: 7 AN: 5292

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 1514

East Asian (EAS) AF: 0.00109 AC: 3 AN: 2744

South Asian (SAS) AF: 0.00329 AC: 7 AN: 2126

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 2774

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 72

European-Non Finnish (NFE) AF: 0.000143 AC: 4 AN: 28062

Other (OTH) AF: 0.00584 AC: 5 AN: 856

Alfa AF: 0.00 Hom.: 0

ClinVar

Significance: Likely benign

Submissions summary: Benign:1

Revision: criteria provided, single submitter

Submissions by phenotype

not provided Benign:1

Sep 19, 2019

GeneDx

Significance: Likely benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

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Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
PhyloP100		-0.19

Splicing

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Other links and lift over

dbSNP: rs759910571; hg19: chr6-76527021;