2-26473159-G-T

Variant names:

• chr2-26473159-G-T
• rs199904558
• NM_194248.3:c.3706C>A

Variant summary

Our verdict is Uncertain significance. The variant received 0 ACMG points: 2P and 2B. PM2 BP4_Moderate

The NM_194248.3(OTOF):​c.3706C>A​(p.Arg1236Ser) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000372 in 1,612,704 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 16/22 in silico tools predict a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. R1236H) has been classified as Likely benign.

• Frequency:
  • Genomes: 𝑓 0.0000066 (0 hom., cov: 33)
  • Exomes 𝑓: 0.0000034 (0 hom.)
• Consequence: OTOF NM_194248.3 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 0.263
• Publications: 6 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

Our verdict: Uncertain_significance. The variant received 0 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.07701504).

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.3706C>A	p.Arg1236Ser	missense	Exon 29 of 47	NP_919224.1	Q9HC10-1
	OTOF	NM_194323.3	MANE Plus Clinical	c.1465C>A	p.Arg489Ser	missense	Exon 12 of 29	NP_919304.1	Q9HC10-2
	OTOF	NM_001287489.2		c.3706C>A	p.Arg1236Ser	missense	Exon 29 of 46	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.3706C>A	p.Arg1236Ser	missense	Exon 29 of 47	ENSP00000272371.2	Q9HC10-1
	OTOF	ENST00000339598.8	TSL:1 MANE Plus Clinical	c.1465C>A	p.Arg489Ser	missense	Exon 12 of 29	ENSP00000344521.3	Q9HC10-2
	OTOF	ENST00000402415.8	TSL:1	c.1465C>A	p.Arg489Ser	missense	Exon 11 of 29	ENSP00000383906.4	A0A2U3TZT7

Frequencies

GnomAD3 genomes AF: 0.00000657 AC: 1 AN: 152192 Hom.: 0 Cov.: 33

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: 0.0000147

Gnomad OTH AF: 0.00

GnomAD4 exome AF: 0.00000342 AC: 5 AN: 1460512 Hom.: 0 Cov.: 33 AF XY: 0.00000275 AC XY: 2 AN XY: 726564

African (AFR) AF: 0.00 AC: 0 AN: 33472

American (AMR) AF: 0.00 AC: 0 AN: 44714

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26120

East Asian (EAS) AF: 0.00 AC: 0 AN: 39696

South Asian (SAS) AF: 0.00 AC: 0 AN: 86240

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 52298

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5696

European-Non Finnish (NFE) AF: 0.00000360 AC: 4 AN: 1111914

Other (OTH) AF: 0.0000166 AC: 1 AN: 60362

GnomAD4 genome AF: 0.00000657 AC: 1 AN: 152192 Hom.: 0 Cov.: 33 AF XY: 0.0000135 AC XY: 1 AN XY: 74326

African (AFR) AF: 0.00 AC: 0 AN: 41450

American (AMR) AF: 0.00 AC: 0 AN: 15284

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

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

South Asian (SAS) AF: 0.00 AC: 0 AN: 4832

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 10624

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

European-Non Finnish (NFE) AF: 0.0000147 AC: 1 AN: 68026

Other (OTH) AF: 0.00 AC: 0 AN: 2092

Alfa AF: 0.00 Hom.: 0

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.15
BayesDel_addAF	Benign	-0.050	T
BayesDel_noAF	Benign	-0.31
CADD	Benign	19
DANN	Uncertain	0.99
DEOGEN2	Benign	0.076	T
Eigen	Benign	-0.43
Eigen_PC	Benign	-0.39
FATHMM_MKL	Benign	0.16	N
LIST_S2	Uncertain	0.91	D
M_CAP	Benign	0.046	D
MetaRNN	Benign	0.077	T
MetaSVM	Benign	-0.34	T
MutationAssessor	Benign	0.55	N
PhyloP100		0.26
PrimateAI	Benign	0.25	T
PROVEAN	Benign	-1.6	N
REVEL	Benign	0.19
Sift	Benign	0.53	T
Sift4G	Benign	0.22	T
Polyphen		0.33	B
Vest4		0.28
MutPred		0.38		Loss of MoRF binding (P = 0.0125)
MVP		0.84
MPC		0.18
ClinPred		0.26	T
GERP RS		3.7
PromoterAI		0.00060	Neutral
Varity_R		0.19
gMVP		0.34
Mutation Taster		=72/28	polymorphism

Splicing

Name	Calibrated prediction	Score	Prediction
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: rs199904558; hg19: chr2-26696027;