rs116430138

Positions:

• chr2-26481016-C-A

Variant summary

Our verdict is Benign. Variant got -16 ACMG points: 0P and 16B. BP4_Strong BP6_Very_Strong BS2

The NM_194248.3(OTOF):​c.1580-7G>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 0.000527 in 1,608,526 control chromosomes in the GnomAD database, including 5 homozygotes. 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 (★★).

• Frequency:
  • Genomes: 𝑓 0.0029 (1 hom., cov: 33)
  • Exomes 𝑓: 0.00028 (4 hom.)
• Consequence: OTOF NM_194248.3 splice_region, intron
• Scores: Splicing: ADA: 0.00007996
• Clinical Significance: Benign/Likely benign criteria provided, multiple submitters, no conflicts B:4
• Conservation: PhyloP100: -1.09

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]

ACMG classification

Verdict is Benign. Variant got -16 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.79).
• BP6: Variant 2-26481016-C-A is Benign according to our data. Variant chr2-26481016-C-A is described in ClinVar as [Likely_benign]. Clinvar id is 164871.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.
• BS2: High Homozygotes in GnomAdExome4 at 4 AR gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
OTOF	NM_194248.3	c.1580-7G>T		splice_region_variant, intron_variant		ENST00000272371.7	NP_919224.1
OTOF	NM_001287489.2	c.1580-7G>T		splice_region_variant, intron_variant			NP_001274418.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
OTOF	ENST00000272371.7	c.1580-7G>T		splice_region_variant, intron_variant		1	NM_194248.3	ENSP00000272371.2
OTOF	ENST00000403946.7	c.1580-7G>T		splice_region_variant, intron_variant		5		ENSP00000385255.3

Frequencies

GnomAD3 genomes AF: 0.00287 AC: 437 AN: 152196 Hom.: 1 Cov.: 33

Gnomad AFR AF: 0.00972

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.00157

Gnomad ASJ AF: 0.00

Gnomad EAS AF: 0.00

Gnomad SAS AF: 0.000207

Gnomad FIN AF: 0.00

Gnomad MID AF: 0.00

Gnomad NFE AF: 0.0000735

Gnomad OTH AF: 0.00192

GnomAD3 exomes AF: 0.000759 AC: 187 AN: 246388 Hom.: 2 AF XY: 0.000590 AC XY: 79 AN XY: 133980

Gnomad AFR exome AF: 0.00950

Gnomad AMR exome AF: 0.000959

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.00

Gnomad SAS exome AF: 0.0000655

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.00000909

Gnomad OTH exome AF: 0.00

GnomAD4 exome AF: 0.000282 AC: 411 AN: 1456212 Hom.: 4 Cov.: 31 AF XY: 0.000248 AC XY: 180 AN XY: 724512

Gnomad4 AFR exome AF: 0.00934

Gnomad4 AMR exome AF: 0.000896

Gnomad4 ASJ exome AF: 0.00

Gnomad4 EAS exome AF: 0.00

Gnomad4 SAS exome AF: 0.0000813

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 0.00000180

Gnomad4 OTH exome AF: 0.000830

GnomAD4 genome AF: 0.00287 AC: 437 AN: 152314 Hom.: 1 Cov.: 33 AF XY: 0.00286 AC XY: 213 AN XY: 74484

Gnomad4 AFR AF: 0.00972

Gnomad4 AMR AF: 0.00157

Gnomad4 ASJ AF: 0.00

Gnomad4 EAS AF: 0.00

Gnomad4 SAS AF: 0.00

Gnomad4 FIN AF: 0.00

Gnomad4 NFE AF: 0.0000735

Gnomad4 OTH AF: 0.00190

Alfa AF: 0.00125 Hom.: 0

Bravo AF: 0.00298

Asia WGS AF: 0.000866 AC: 3 AN: 3478

EpiCase AF: 0.00

EpiControl AF: 0.0000594

ClinVar

Significance: Benign/Likely benign

Submissions summary: Benign:4

Revision: criteria provided, multiple submitters, no conflicts

Submissions by phenotype

not provided Benign:3

Likely benign, criteria provided, single submitter	clinical testing	GeneDx	Oct 14, 2020	- -
Benign, criteria provided, single submitter	clinical testing	Labcorp Genetics (formerly Invitae), Labcorp	Dec 31, 2019	- -
Likely benign, criteria provided, single submitter	not provided	Breakthrough Genomics, Breakthrough Genomics	-	- -

not specified Benign:1

Benign, criteria provided, single submitter

clinical testing

Laboratory for Molecular Medicine, Mass General Brigham Personalized Medicine

Apr 30, 2012

1580-7G>T in Intron 14 of OTOF: This variant is not expected to have clinical si gnificance because it has been identified in 0.7% (27/3738) of African American chromosomes from a broad population by the NHLBI Exome Sequencing Project (http: //evs.gs.washington.edu/EVS; dbSNP rs116430138). -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.79
CADD	Benign	0.66
DANN	Benign	0.56

Splicing

Name	Calibrated prediction	Score	Prediction
dbscSNV1_ADA	Benign	0.000080
dbscSNV1_RF	Benign	0.0080
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

Publications

LitVar

Other links and lift over

dbSNP: rs116430138; hg19: chr2-26703884;