chr11-17645736-C-A

Variant names:

• chr11-17645736-C-A
• rs182750732
• NM_001292063.2:c.8542-8C>A

Variant summary

Our verdict is Likely pathogenic. The variant received 6 ACMG points: 6P and 0B. PM2 PP3_Strong

The NM_001292063.2(OTOG):​c.8542-8C>A variant causes a splice region, intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000215 in 1,398,492 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 3/3 splice prediction tools predicting alterations to normal splicing. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

• Frequency:
  • Genomes: not found (cov: 33)
  • Exomes 𝑓: 0.0000021 (0 hom.)
• Consequence: OTOG NM_001292063.2 splice_region, intron
• Scores: Splicing: ADA: 1.000
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: -2.61
• Publications: 0 publications found

Genes affected

OTOG (HGNC:8516): (otogelin) The protein encoded by this gene is a component of the acellular membranes of the inner ear. Disruption of the orthologous mouse gene shows that it plays a role in auditory and vestibular functions. It is involved in fibrillar network organization, the anchoring of otoconial membranes and cupulae to the neuroepithelia, and likely in sound stimulation resistance. Mutations in this gene cause autosomal recessive nonsyndromic deafness, type 18B. Alternative splicing of this gene results in multiple transcript variants. [provided by RefSeq, May 2014]

LINC02729 (HGNC:54246): (long intergenic non-protein coding RNA 2729)

ACMG classification

Our verdict: Likely_pathogenic. The variant received 6 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PP3: Splicing predictors support a deleterious effect. Scorers claiming Pathogenic: dbscSNV1_ADA, dbscSNV1_RF, max_spliceai. No scorers claiming Uncertain. No scorers claiming Benign.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_001292063.2. 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
	OTOG	NM_001292063.2	MANE Select	c.8542-8C>A		splice_region intron	N/A	NP_001278992.1
	OTOG	NM_001277269.2		c.8578-8C>A		splice_region intron	N/A	NP_001264198.1

Ensembl Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	OTOG	ENST00000399397.6	TSL:5 MANE Select	c.8542-8C>A		splice_region intron	N/A	ENSP00000382329.2
	OTOG	ENST00000399391.7	TSL:5	c.8578-8C>A		splice_region intron	N/A	ENSP00000382323.2
	LINC02729	ENST00000849122.1		n.196-663G>T		intron	N/A

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome AF: 0.00000215 AC: 3 AN: 1398492 Hom.: 0 Cov.: 32 AF XY: 0.00 AC XY: 0 AN XY: 689756

African (AFR) AF: 0.00 AC: 0 AN: 31598

American (AMR) AF: 0.00 AC: 0 AN: 35706

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 25182

East Asian (EAS) AF: 0.00 AC: 0 AN: 35740

South Asian (SAS) AF: 0.00 AC: 0 AN: 79234

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 48282

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5700

European-Non Finnish (NFE) AF: 0.00000278 AC: 3 AN: 1079008

Other (OTH) AF: 0.00 AC: 0 AN: 58042

GnomAD4 genome Cov.: 33

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.66
CADD	Benign	19
DANN	Benign	0.64
PhyloP100		-2.6

Splicing

Name	Calibrated prediction	Score	Prediction
dbscSNV1_ADA	Pathogenic	1.0
dbscSNV1_RF	Pathogenic	0.91
SpliceAI score (max)		0.81		Details are displayed if max score is > 0.2
DS_AG_spliceai		0.81		Position offset: 2
DS_AL_spliceai		0.48		Position offset: 8

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

Other links and lift over

dbSNP: rs182750732; hg19: chr11-17667283;