NM_194248.3:c.80-5C>T

Variant names:

• chr2-26537779-G-A
• rs531034566
• NM_194248.3:c.80-5C>T

Variant summary

Our verdict is Benign. The variant received -16 ACMG points: 0P and 16B. BP4_Strong BP6_Very_Strong BS1

The NM_194248.3(OTOF):​c.80-5C>T variant causes a splice region, intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000645 in 1,550,926 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 predict no significant impact on normal splicing. Variant has been reported in ClinVar as Likely benign (★★). The gene OTOF is included in the ClinGen Criteria Specification Registry.

• Frequency:
  • Genomes: 𝑓 0.00035 (0 hom., cov: 33)
  • Exomes 𝑓: 0.000033 (0 hom.)
• Consequence: OTOF NM_194248.3 splice_region, intron
• Scores: Splicing: ADA: 0.00001775
• Clinical Significance: Likely benign criteria provided, multiple submitters, no conflicts B:3
• Conservation: PhyloP100: 1.15
• Publications: 0 publications found

Genes affected

OTOF (HGNC:8515): (otoferlin) Mutations in this gene are a cause of neurosensory nonsyndromic recessive deafness, DFNB9. The short form of the encoded protein has 3 C2 domains, a single carboxy-terminal transmembrane domain found also in the C. elegans spermatogenesis factor FER-1 and human dysferlin, while the long form has 6 C2 domains. The homology suggests that this protein may be involved in vesicle membrane fusion. Several transcript variants encoding multiple isoforms have been found for this gene. [provided by RefSeq, Jul 2008]

OTOF Gene-Disease associations (from GenCC):

• autosomal recessive nonsyndromic hearing loss 9

  Inheritance: AR, Unknown Classification: DEFINITIVE, STRONG Submitted by: G2P, ClinGen, Labcorp Genetics (formerly Invitae)
• hearing loss, autosomal recessive

  Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet

ACMG classification

Specifications for OTOF are available in the ClinGen Criteria Specification Registry and recommended for reference when assigning criteria.

Our verdict: Benign. The variant received -16 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.88).
• BP6: Variant 2-26537779-G-A is Benign according to our data. Variant chr2-26537779-G-A is described in ClinVar as Likely_benign. ClinVar VariationId is 505046.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.
• BS1: Variant frequency is greater than expected in population afr. GnomAd4 allele frequency = 0.000355 (54/152268) while in subpopulation AFR AF = 0.00128 (53/41560). AF 95% confidence interval is 0.001. There are 0 homozygotes in GnomAd4. There are 23 alleles in the male GnomAd4 subpopulation. Median coverage is 33. This position passed quality control check.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_194248.3. 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
	OTOF	NM_194248.3	MANE Select	c.80-5C>T		splice_region intron	N/A	NP_919224.1	Q9HC10-1
	OTOF	NM_001287489.2		c.80-5C>T		splice_region intron	N/A	NP_001274418.1	Q9HC10-5

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	OTOF	ENST00000272371.7	TSL:1 MANE Select	c.80-5C>T		splice_region intron	N/A	ENSP00000272371.2	Q9HC10-1
	OTOF	ENST00000403946.7	TSL:5	c.80-5C>T		splice_region intron	N/A	ENSP00000385255.3	Q9HC10-5

Frequencies

GnomAD3 genomes AF: 0.000355 AC: 54 AN: 152150 Hom.: 0 Cov.: 33

Gnomad AFR AF: 0.00128

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.0000655

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: 0.00

Gnomad OTH AF: 0.00

GnomAD2 exomes AF: 0.0000946 AC: 15 AN: 158556 AF XY: 0.0000720

Gnomad AFR exome AF: 0.00157

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: 0.0000162

Gnomad OTH exome AF: 0.00

GnomAD4 exome AF: 0.0000329 AC: 46 AN: 1398658 Hom.: 0 Cov.: 30 AF XY: 0.0000304 AC XY: 21 AN XY: 690096

African (AFR) AF: 0.00127 AC: 40 AN: 31604

American (AMR) AF: 0.00 AC: 0 AN: 35976

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 25194

East Asian (EAS) AF: 0.00 AC: 0 AN: 35834

South Asian (SAS) AF: 0.00 AC: 0 AN: 79266

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 49394

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5692

European-Non Finnish (NFE) AF: 9.28e-7 AC: 1 AN: 1077734

Other (OTH) AF: 0.0000863 AC: 5 AN: 57964

GnomAD4 genome AF: 0.000355 AC: 54 AN: 152268 Hom.: 0 Cov.: 33 AF XY: 0.000309 AC XY: 23 AN XY: 74450

African (AFR) AF: 0.00128 AC: 53 AN: 41560

American (AMR) AF: 0.0000654 AC: 1 AN: 15296

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 3468

East Asian (EAS) AF: 0.00 AC: 0 AN: 5184

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

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 10610

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

European-Non Finnish (NFE) AF: 0.00 AC: 0 AN: 68006

Other (OTH) AF: 0.00 AC: 0 AN: 2112

Alfa AF: 0.000228 Hom.: 0

Bravo AF: 0.000317

ClinVar

ClinVar submissions

Significance: Likely benign

Revision: criteria provided, multiple submitters, no conflicts

Pathogenic	VUS	Benign	Condition
-	-	1	not provided (1)
-	-	1	not specified (1)
-	-	1	OTOF-related disorder (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.88
CADD	Benign	2.0
DANN	Benign	0.64
PhyloP100		1.1

Splicing

Name	Calibrated prediction	Score	Prediction
dbscSNV1_ADA	Benign	0.000018
dbscSNV1_RF	Benign	0.0
SpliceAI score (max)		0.0		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: rs531034566; hg19: chr2-26760647;