rs142111099

Variant names:

• chr2-26461855-G-A
• rs142111099
• NM_194248.3:c.5374C>T

Variant summary

Our verdict is Likely pathogenic. The variant received 7 ACMG points: 7P and 0B. PP3 PP4 PM2_Supporting PM5 PM3

This summary comes from the ClinGen Evidence Repository: The c.5374C>T variant in OTOF is a missense variant predicted to cause substitution of arginine by cysteine at amino acid 1792. The highest population minor allele frequency in gnomAD v2.1.1 is 0.00006152 (1/16256 alleles) in the African/African American population, which is lower than the ClinGen Hearing Loss VCEP threshold (<0.00007) for PM2_Supporting, meeting this criterion (PM2_Supporting). The computational predictor REVEL gives a score of 0.843, which is above the threshold of 0.7, evidence that correlates with impact to OTOF function (PP3). 1 different missense variant, c.5375G>A (p.R1792H) (PMID:29048421, ClinVar Variation ID: 48259), in the same codon has been classified as likely pathogenic for nonsyndromic hearing loss by multiple submitters in ClinVar (PM5). This variant has been detected in at least 3 individuals with AR deafness. For two of those individuals, both were compound heterozygous for the variant and a VUS meeting PM2_Supporting, and both of those were confirmed in trans by family testing (c.2676G>A (p.K892K) which occurs at the last nucleotide in exon (22) of OTOF and c.4748G>A (p.R1583H), 1.5 PM3 points, PMID:34416374, Universitätsmedizin Göttingen, Institute of Human Genetics/Institute of Auditory Neuroscience & InnerEarLab) (PM3). ​​At least one patient was compound heterozygous for this variant and the p.K892K variant displayed auditory neuropathy spectrum disorder (ANSD), which is highly specific for autosomal recessive deafness (PP4, PMID:34416374). In summary, this variant meets the criteria to be classified as likely pathogenic for autosomal recessive nonsyndromic hearing loss based on the ACMG/AMP criteria applied, as specified by the ClinGen Hearing Loss VCEP: PM2_P, PP3, PP4, PM3, PM5 (ClinGen Hearing Loss VCEP specifications version 2; 6/27/2022). LINK:https://erepo.genome.network/evrepo/ui/classification/CA182451/MONDO:0019497/023

• Frequency:
  • Genomes: 𝑓 0.000013 (0 hom., cov: 32)
  • Exomes 𝑓: 0.0000096 (0 hom.)
• Consequence: OTOF NM_194248.3 missense
• Clinical Significance: Likely pathogenic reviewed by expert panel P:2 U:1
• Conservation: PhyloP100: 6.70
• Publications: 8 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 Classification: DEFINITIVE, STRONG Submitted by: ClinGen, Labcorp Genetics (formerly Invitae), G2P
• hearing loss, autosomal recessive

  Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet

ACMG classification

Our verdict: Likely_pathogenic. The variant received 7 ACMG points.

• PM2: For more information check the summary or visit ClinGen Evidence Repository.
• PM3: For more information check the summary or visit ClinGen Evidence Repository.
• PM5: For more information check the summary or visit ClinGen Evidence Repository.
• PP3: For more information check the summary or visit ClinGen Evidence Repository.
• PP4: For more information check the summary or visit ClinGen Evidence Repository.

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

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	OTOF	NM_194248.3	MANE Select	c.5374C>T	p.Arg1792Cys	missense	Exon 43 of 47	NP_919224.1
	OTOF	NM_194323.3	MANE Plus Clinical	c.3073C>T	p.Arg1025Cys	missense	Exon 26 of 29	NP_919304.1
	OTOF	NM_001287489.2		c.5374C>T	p.Arg1792Cys	missense	Exon 43 of 46	NP_001274418.1

Ensembl Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	OTOF	ENST00000272371.7	TSL:1 MANE Select	c.5374C>T	p.Arg1792Cys	missense	Exon 43 of 47	ENSP00000272371.2
	OTOF	ENST00000339598.8	TSL:1 MANE Plus Clinical	c.3073C>T	p.Arg1025Cys	missense	Exon 26 of 29	ENSP00000344521.3
	OTOF	ENST00000402415.8	TSL:1	c.3133C>T	p.Arg1045Cys	missense	Exon 25 of 29	ENSP00000383906.4

Frequencies

GnomAD3 genomes AF: 0.0000131 AC: 2 AN: 152172 Hom.: 0 Cov.: 32

Gnomad AFR AF: 0.00

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: 0.0000294

Gnomad OTH AF: 0.00

GnomAD2 exomes AF: 0.00000795 AC: 2 AN: 251482 AF XY: 0.00000736

Gnomad AFR exome AF: 0.0000615

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: 0.00

Gnomad OTH exome AF: 0.00

GnomAD4 exome AF: 0.00000958 AC: 14 AN: 1461890 Hom.: 0 Cov.: 33 AF XY: 0.0000110 AC XY: 8 AN XY: 727248

African (AFR) AF: 0.00 AC: 0 AN: 33480

American (AMR) AF: 0.00 AC: 0 AN: 44724

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26136

East Asian (EAS) AF: 0.00 AC: 0 AN: 39700

South Asian (SAS) AF: 0.0000116 AC: 1 AN: 86258

European-Finnish (FIN) AF: 0.0000187 AC: 1 AN: 53420

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5768

European-Non Finnish (NFE) AF: 0.0000108 AC: 12 AN: 1112010

Other (OTH) AF: 0.00 AC: 0 AN: 60394

GnomAD4 genome AF: 0.0000131 AC: 2 AN: 152172 Hom.: 0 Cov.: 32 AF XY: 0.00 AC XY: 0 AN XY: 74334

⚠️ The allele balance in gnomAD version 4 Genomes is significantly skewed from the expected value of 0.5.

African (AFR) AF: 0.00 AC: 0 AN: 41432

American (AMR) AF: 0.00 AC: 0 AN: 15280

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 3472

East Asian (EAS) AF: 0.00 AC: 0 AN: 5186

South Asian (SAS) AF: 0.00 AC: 0 AN: 4830

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 10630

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 316

European-Non Finnish (NFE) AF: 0.0000294 AC: 2 AN: 68026

Other (OTH) AF: 0.00 AC: 0 AN: 2088

⚠️ The allele balance in gnomAD version 4 Genomes is significantly skewed from the expected value of 0.5. (p-value = 0), which strongly suggests a high chance of mosaicism in these individuals.

Alfa AF: 0.00 Hom.: 0

Bravo AF: 0.0000113

ESP6500AA AF: 0.000227 AC: 1

ESP6500EA AF: 0.00 AC: 0

ExAC AF: 0.0000247 AC: 3

EpiCase AF: 0.0000545

EpiControl AF: 0.00

ClinVar

ClinVar submissions as Germline

Significance: Likely pathogenic

Revision: reviewed by expert panel

Pathogenic	VUS	Benign	Condition
1	-	-	Nonsyndromic genetic hearing loss (1)
1	-	-	not provided (1)
-	1	-	not specified (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	0.96
BayesDel_addAF	Pathogenic	0.32	D
BayesDel_noAF	Pathogenic	0.41
CADD	Pathogenic	32
DANN	Pathogenic	1.0
DEOGEN2	Pathogenic	0.80	D
Eigen	Pathogenic	0.73
Eigen_PC	Uncertain	0.64
FATHMM_MKL	Uncertain	0.91	D
LIST_S2	Uncertain	0.97	D
M_CAP	Pathogenic	0.35	D
MetaRNN	Pathogenic	0.94	D
MetaSVM	Pathogenic	0.83	D
MutationAssessor	Pathogenic	3.4	M
PhyloP100		6.7
PrimateAI	Pathogenic	0.90	D
PROVEAN	Pathogenic	-7.8	D
REVEL	Pathogenic	0.84
Sift	Pathogenic	0.0	D
Sift4G	Pathogenic	0.0	D
Polyphen		1.0	D
Vest4		0.93
MVP		0.94
MPC		0.70
ClinPred		1.0	D
GERP RS		4.1
Varity_R		0.88
gMVP		0.90
Mutation Taster		=2/98	disease causing

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: rs142111099; hg19: chr2-26684723; COSMIC: COSV55507957; COSMIC: COSV55507957;