NM_001378609.3:c.63delG

Variant names:

• chr12-80209493-TG-T
• rs376104832
• NM_001378609.3:c.63delG

Variant summary

Our verdict is Pathogenic. The variant received 18 ACMG points: 18P and 0B. PVS1 PM2 PP5_Very_Strong

The NM_001378609.3(OTOGL):​c.63delG​(p.Leu22CysfsTer14) variant causes a frameshift change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000614 in 1,497,204 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Likely pathogenic (★★).

• Frequency:
  • Genomes: 𝑓 0.000039 (0 hom., cov: 32)
  • Exomes 𝑓: 0.000064 (0 hom.)
• Consequence: OTOGL NM_001378609.3 frameshift
• Clinical Significance: Pathogenic/Likely pathogenic criteria provided, multiple submitters, no conflicts P:3
• Conservation: PhyloP100: 2.35
• Publications: 0 publications found

Genes affected

OTOGL (HGNC:26901): (otogelin like) The protein encoded by this gene belongs to the otogelin family. This gene is expressed in the inner ear of vertebrates with the highest level of expression seen at the embryonic stage and lowest in adult. Knockdown studies in zebrafish suggest that this gene is essential for normal inner ear function. Mutations in this gene are associated with autosomal recessive deafness. [provided by RefSeq, Dec 2012]

OTOGL Gene-Disease associations (from GenCC):

• autosomal recessive nonsyndromic hearing loss 84B

  Inheritance: AR Classification: DEFINITIVE, STRONG Submitted by: Labcorp Genetics (formerly Invitae), G2P, Laboratory for Molecular Medicine, PanelApp Australia
• nonsyndromic genetic hearing loss

  Inheritance: AR Classification: DEFINITIVE Submitted by: ClinGen
• hearing loss, autosomal recessive

  Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet

ACMG classification

Our verdict: Pathogenic. The variant received 18 ACMG points.

• PVS1: Loss of function variant, product does not undergo nonsense mediated mRNA decay. Variant located near the start codon (<100nt), not predicted to undergo nonsense mediated mRNA decay. There are 79 pathogenic variants in the truncated region.
• PM2: Very rare variant in population databases, with high coverage
• PP5: Variant 12-80209493-TG-T is Pathogenic according to our data. Variant chr12-80209493-TG-T is described in ClinVar as Pathogenic/Likely_pathogenic. ClinVar VariationId is 817079.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_001378609.3. 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
	OTOGL	NM_001378609.3	MANE Select	c.63delG	p.Leu22CysfsTer14	frameshift	Exon 2 of 59	NP_001365538.2	Q3ZCN5
	OTOGL	NM_001378610.3		c.63delG	p.Leu22CysfsTer14	frameshift	Exon 5 of 62	NP_001365539.2	Q3ZCN5
	OTOGL	NM_173591.7		c.63delG	p.Leu22CysfsTer14	frameshift	Exon 2 of 59	NP_775862.4	Q3ZCN5

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	OTOGL	ENST00000547103.7	TSL:5 MANE Select	c.63delG	p.Leu22CysfsTer14	frameshift	Exon 2 of 59	ENSP00000447211.2	Q3ZCN5
	OTOGL	ENST00000646859.1		c.63delG	p.Leu22CysfsTer14	frameshift	Exon 7 of 63	ENSP00000496036.1	A0A2R8YF04
	OTOGL	ENST00000643417.1		n.723delG		non_coding_transcript_exon	Exon 5 of 23

Frequencies

GnomAD3 genomes AF: 0.0000394 AC: 6 AN: 152204 Hom.: 0 Cov.: 32

Gnomad AFR AF: 0.0000241

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.00

Gnomad ASJ AF: 0.00

Gnomad EAS AF: 0.00

Gnomad SAS AF: 0.00

Gnomad FIN AF: 0.00

Gnomad MID AF: 0.00

Gnomad NFE AF: 0.0000735

Gnomad OTH AF: 0.00

GnomAD2 exomes AF: 0.00000763 AC: 1 AN: 131040 AF XY: 0.0000140

Gnomad AFR exome AF: 0.00

Gnomad AMR exome AF: 0.00

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.00

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.0000195

Gnomad OTH exome AF: 0.00

GnomAD4 exome AF: 0.0000639 AC: 86 AN: 1344882 Hom.: 0 Cov.: 25 AF XY: 0.0000466 AC XY: 31 AN XY: 665052

African (AFR) AF: 0.00 AC: 0 AN: 30726

American (AMR) AF: 0.0000286 AC: 1 AN: 34960

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 24758

East Asian (EAS) AF: 0.00 AC: 0 AN: 35372

South Asian (SAS) AF: 0.00 AC: 0 AN: 76968

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 33360

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5626

European-Non Finnish (NFE) AF: 0.0000793 AC: 83 AN: 1046566

Other (OTH) AF: 0.0000354 AC: 2 AN: 56546

GnomAD4 genome AF: 0.0000394 AC: 6 AN: 152322 Hom.: 0 Cov.: 32 AF XY: 0.0000269 AC XY: 2 AN XY: 74478

African (AFR) AF: 0.0000240 AC: 1 AN: 41588

American (AMR) AF: 0.00 AC: 0 AN: 15290

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 3470

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

South Asian (SAS) AF: 0.00 AC: 0 AN: 4826

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 10618

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

European-Non Finnish (NFE) AF: 0.0000735 AC: 5 AN: 68018

Other (OTH) AF: 0.00 AC: 0 AN: 2116

Alfa AF: 0.0000114 Hom.: 0

Bravo AF: 0.0000151

ClinVar

ClinVar submissions as Germline

Significance: Pathogenic/Likely pathogenic

Revision: criteria provided, multiple submitters, no conflicts

Pathogenic	VUS	Benign	Condition
2	-	-	not provided (2)
1	-	-	Autosomal recessive nonsyndromic hearing loss 84B (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
PhyloP100		2.3
Mutation Taster		=12/188	disease causing (ClinVar)

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

Other links and lift over

dbSNP: rs376104832; hg19: chr12-80603273;