16-21728357-C-T

Variant names:

• chr16-21728357-C-T
• rs201907941
• NM_144672.4:c.2133C>T
• OTOA p.His711His

Variant summary

Our verdict is Benign. The variant received -11 ACMG points: 2P and 13B. PM2 BP4_Strong BP6_Very_Strong BP7

The NM_144672.4(OTOA):​c.2133C>T​(p.His711His) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000279 in 1,614,152 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★★).

• Frequency:
  • Genomes: 𝑓 0.000059 (0 hom., cov: 32)
  • Exomes 𝑓: 0.000025 (0 hom.)
• Consequence: OTOA NM_144672.4 synonymous
• Clinical Significance: Likely benign criteria provided, multiple submitters, no conflicts B:2
• Conservation: PhyloP100: -1.57
• Publications: 0 publications found

Genes affected

OTOA (HGNC:16378): (otoancorin) The protein encoded by this gene is specifically expressed in the inner ear, and is located at the interface between the apical surface of the inner ear sensory epithelia and their overlying acellular gels. It is prposed that this protein is involved in the attachment of the inner ear acellular gels to the apical surface of the underlying nonsensory cells. Mutations in this gene are associated with autosomal recessive deafness type 22 (DFNB22). Alternatively spliced transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Sep 2009]

OTOA Gene-Disease associations (from GenCC):

• autosomal recessive nonsyndromic hearing loss 22

  Inheritance: AR Classification: DEFINITIVE, STRONG, LIMITED Submitted by: G2P, Laboratory for Molecular Medicine, Labcorp Genetics (formerly Invitae)
• nonsyndromic genetic hearing loss

  Inheritance: AR Classification: DEFINITIVE Submitted by: ClinGen
• hearing loss, autosomal recessive

  Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet

ACMG classification

Our verdict: Benign. The variant received -11 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.84).
• BP6: Variant 16-21728357-C-T is Benign according to our data. Variant chr16-21728357-C-T is described in ClinVar as Likely_benign. ClinVar VariationId is 505224.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.
• BP7: Synonymous conserved (PhyloP=-1.57 with no splicing effect.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_144672.4. 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
	OTOA	NM_144672.4	MANE Select	c.2133C>T	p.His711His	synonymous	Exon 20 of 29	NP_653273.3
	OTOA	NM_001161683.2		c.1896C>T	p.His632His	synonymous	Exon 15 of 24	NP_001155155.1	Q7RTW8-4
	OTOA	NM_170664.3		c.1161C>T	p.His387His	synonymous	Exon 10 of 19	NP_733764.1	Q7RTW8-2

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	OTOA	ENST00000646100.2	MANE Select	c.2133C>T	p.His711His	synonymous	Exon 20 of 29	ENSP00000496564.2	Q7RTW8-5
	OTOA	ENST00000388958.8	TSL:1	c.2133C>T	p.His711His	synonymous	Exon 19 of 28	ENSP00000373610.3	Q7RTW8-5
	OTOA	ENST00000286149.8	TSL:5	c.2175C>T	p.His725His	synonymous	Exon 19 of 28	ENSP00000286149.4	Q7RTW8-1

Frequencies

GnomAD3 genomes AF: 0.0000591 AC: 9 AN: 152168 Hom.: 0 Cov.: 32

Gnomad AFR AF: 0.0000241

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.000131

Gnomad ASJ AF: 0.00

Gnomad EAS AF: 0.000386

Gnomad SAS AF: 0.000207

Gnomad FIN AF: 0.00

Gnomad MID AF: 0.00

Gnomad NFE AF: 0.0000441

Gnomad OTH AF: 0.00

GnomAD2 exomes AF: 0.0000756 AC: 19 AN: 251296 AF XY: 0.0000736

Gnomad AFR exome AF: 0.00

Gnomad AMR exome AF: 0.0000289

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.000652

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.0000440

Gnomad OTH exome AF: 0.00

GnomAD4 exome AF: 0.0000246 AC: 36 AN: 1461866 Hom.: 0 Cov.: 31 AF XY: 0.0000234 AC XY: 17 AN XY: 727234

African (AFR) AF: 0.0000299 AC: 1 AN: 33480

American (AMR) AF: 0.0000224 AC: 1 AN: 44724

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

East Asian (EAS) AF: 0.000151 AC: 6 AN: 39700

South Asian (SAS) AF: 0.0000232 AC: 2 AN: 86258

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 53408

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

European-Non Finnish (NFE) AF: 0.0000234 AC: 26 AN: 1111996

Other (OTH) AF: 0.00 AC: 0 AN: 60396

GnomAD4 genome AF: 0.0000591 AC: 9 AN: 152286 Hom.: 0 Cov.: 32 AF XY: 0.0000537 AC XY: 4 AN XY: 74466

African (AFR) AF: 0.0000241 AC: 1 AN: 41566

American (AMR) AF: 0.000131 AC: 2 AN: 15298

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 3470

East Asian (EAS) AF: 0.000387 AC: 2 AN: 5172

South Asian (SAS) AF: 0.000207 AC: 1 AN: 4832

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: 0.0000441 AC: 3 AN: 68022

Other (OTH) AF: 0.00 AC: 0 AN: 2110

Alfa AF: 0.0000568 Hom.: 0

Bravo AF: 0.0000453

EpiCase AF: 0.00

EpiControl AF: 0.0000593

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)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.84
CADD	Benign	0.034
DANN	Benign	0.45
PhyloP100		-1.6

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

MaxEntScan Visualizer can be used to analyze the impact of this mutation on the neighboring sequence.

Other links and lift over

dbSNP: rs201907941;

hg19: chr16-21739678;

COSMIC: COSV53756322;

COSMIC: COSV53756322;