rs1554223853

Variant names:

• chr6-75914267-T-C
• rs1554223853
• NM_004999.4:c.3644T>C

Variant summary

Our verdict is Uncertain significance. Variant got 3 ACMG points: 3P and 0B. PM2 PP3

The NM_004999.4(MYO6):​c.3644T>C​(p.Ile1215Thr) variant causes a missense change involving the alteration of a conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency: Genomes: not found (cov: 33)
• Consequence: MYO6 NM_004999.4 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 7.65

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]

ACMG classification

Verdict is Uncertain_significance. Variant got 3 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.799

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
MYO6	NM_004999.4	c.3644T>C	p.Ile1215Thr	missense_variant	Exon 34 of 35	ENST00000369977.8	NP_004990.3

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
MYO6	ENST00000369977.8	c.3644T>C	p.Ile1215Thr	missense_variant	Exon 34 of 35	1	NM_004999.4	ENSP00000358994.3

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome Cov.: 31

GnomAD4 genome Cov.: 33

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

not specified Uncertain:1

Aug 04, 2016

Laboratory for Molecular Medicine, Mass General Brigham Personalized Medicine

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The p.Ile1215Thr variant in MYO6 has not been previously reported in individuals with hearing loss or in large population studies. Computational prediction tool s and conservation analyses do not provide strong support for or against an impa ct to the protein. In summary, the clinical significance of the p.Ile1215Thr var iant is uncertain. -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_addAF	Pathogenic	0.18	D
BayesDel_noAF	Uncertain	0.010
CADD	Pathogenic	27
DANN	Uncertain	0.99
DEOGEN2	Uncertain	0.43	T;.;.;.;T;T
Eigen	Uncertain	0.59
Eigen_PC	Uncertain	0.64
FATHMM_MKL	Pathogenic	0.98	D
LIST_S2	Pathogenic	0.98	D;.;D;D;D;D
M_CAP	Uncertain	0.20	D
MetaRNN	Pathogenic	0.80	D;D;D;D;D;D
MetaSVM	Uncertain	0.76	D
PrimateAI	Pathogenic	0.88	D
PROVEAN	Uncertain	-3.3	.;D;D;.;D;.
REVEL	Pathogenic	0.73
Sift	Uncertain	0.0080	.;D;D;.;D;.
Sift4G	Uncertain	0.026	D;D;D;D;D;D
Polyphen		0.56, 0.99	.;P;D;P;.;.
Vest4		0.78
MVP		0.90
MPC		1.0
ClinPred		0.97	D
GERP RS		5.7
gMVP		0.64

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.010		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: rs1554223853; hg19: chr6-76623984;