NM_005379.4:c.347_349dupCTT

Variant names:

• chr12-57047383-T-TAAG
• rs864309476
• NM_005379.4:c.347_349dupCTT

Variant summary

Our verdict is Uncertain significance. The variant received 3 ACMG points: 3P and 0B. PM2 PM4_Supporting

The NM_005379.4(MYO1A):​c.347_349dupCTT​(p.Ser116dup) variant causes a conservative inframe insertion change involving the alteration of a conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. Variant has been reported in ClinVar as Uncertain significance (no stars).

• Frequency: Genomes: not found (cov: 32)
• Consequence: MYO1A NM_005379.4 conservative_inframe_insertion
• Clinical Significance: Uncertain significance no assertion criteria provided U:1
• Conservation: PhyloP100: 7.42
• Publications: 1 publications found

Genes affected

MYO1A (HGNC:7595): (myosin IA) This gene encodes a member of the myosin superfamily. The protein represents an unconventional myosin; it should not be confused with the conventional skeletal muscle myosin-1 (MYH1). Unconventional myosins contain the basic domains characteristic of conventional myosins and are further distinguished from class members by their tail domains. They function as actin-based molecular motors. Mutations in this gene have been associated with autosomal dominant deafness. Alternatively spliced variants have been found for this gene. [provided by RefSeq, Dec 2011]

MYO1A Gene-Disease associations (from GenCC):

• nonsyndromic genetic hearing loss

  Inheritance: AD Classification: NO_KNOWN Submitted by: ClinGen

ACMG classification

Our verdict: Uncertain_significance. The variant received 3 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PM4: Nonframeshift variant in NON repetitive region in NM_005379.4. Strenght limited to Supporting due to length of the change: 1aa.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_005379.4. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	MYO1A	NM_005379.4	MANE Select	c.347_349dupCTT	p.Ser116dup	conservative_inframe_insertion	Exon 5 of 28	NP_005370.1
	MYO1A	NM_001256041.2		c.347_349dupCTT	p.Ser116dup	conservative_inframe_insertion	Exon 6 of 29	NP_001242970.1

Ensembl Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	MYO1A	ENST00000300119.8	TSL:1 MANE Select	c.347_349dupCTT	p.Ser116dup	conservative_inframe_insertion	Exon 5 of 28	ENSP00000300119.3
	MYO1A	ENST00000442789.6	TSL:1	c.347_349dupCTT	p.Ser116dup	conservative_inframe_insertion	Exon 6 of 29	ENSP00000393392.2
	MYO1A	ENST00000554234.5	TSL:5	n.-93_-91dupCTT		non_coding_transcript_exon	Exon 2 of 24	ENSP00000451033.1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 32

GnomAD4 genome Cov.: 32

Alfa AF: 0.00 Hom.: 0

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: no assertion criteria provided

Submissions by phenotype

Autosomal dominant nonsyndromic hearing loss 48 Uncertain:1

May 01, 2014

OMIM

Significance: Uncertain significance

Review Status: no assertion criteria provided

Collection Method: literature only

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
PhyloP100		7.4

Splicing

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

Other links and lift over

dbSNP: rs864309476; hg19: chr12-57441167;