rs756090687

Positions:

• chr9-114423393-G-A

Variant summary

Our verdict is Uncertain significance. Variant got 1 ACMG points: 2P and 1B. PM2 BP4

The NM_015404.4(WHRN):​c.1547C>T​(p.Thr516Ile) variant causes a missense change. The variant allele was found at a frequency of 0.0000171 in 1,461,856 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 Uncertain significance (★★).

• Frequency:
  • Genomes: not found (cov: 31)
  • Exomes 𝑓: 0.000017 (0 hom.)
• Consequence: WHRN NM_015404.4 missense
• Clinical Significance: Uncertain significance criteria provided, multiple submitters, no conflicts U:2
• Conservation: PhyloP100: 5.76

Genes affected

WHRN (HGNC:16361): (whirlin) This gene is thought to function in the organization and stabilization of sterocilia elongation and actin cystoskeletal assembly, based on studies of the related mouse gene. Mutations in this gene have been associated with autosomal recessive non-syndromic deafness and Usher Syndrome. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Nov 2016]

WHRN (HGNC:):

ACMG classification

Verdict is Uncertain_significance. Variant got 1 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.2716681).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
WHRN	NM_015404.4	c.1547C>T	p.Thr516Ile	missense_variant	7/12	ENST00000362057.4	NP_056219.3

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
WHRN	ENST00000362057.4	c.1547C>T	p.Thr516Ile	missense_variant	7/12	1	NM_015404.4	ENSP00000354623.3

Frequencies

GnomAD3 genomes Cov.: 31

GnomAD3 exomes AF: 0.00000796 AC: 2 AN: 251396 Hom.: 0 AF XY: 0.00000736 AC XY: 1 AN XY: 135864

Gnomad AFR exome AF: 0.00

Gnomad AMR exome AF: 0.00

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.00

Gnomad SAS exome AF: 0.0000327

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.00000880

Gnomad OTH exome AF: 0.00

GnomAD4 exome AF: 0.0000171 AC: 25 AN: 1461856 Hom.: 0 Cov.: 31 AF XY: 0.0000206 AC XY: 15 AN XY: 727220

Gnomad4 AFR exome AF: 0.0000597

Gnomad4 AMR exome AF: 0.000112

Gnomad4 ASJ exome AF: 0.00

Gnomad4 EAS exome AF: 0.0000252

Gnomad4 SAS exome AF: 0.0000580

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 0.00000989

Gnomad4 OTH exome AF: 0.0000166

GnomAD4 genome Cov.: 31

ExAC AF: 0.00000824 AC: 1

EpiCase AF: 0.00

EpiControl AF: 0.0000593

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:2

Revision: criteria provided, multiple submitters, no conflicts

Submissions by phenotype

not specified Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Laboratory for Molecular Medicine, Mass General Brigham Personalized Medicine

Mar 02, 2015

The p.Thr516Ile variant in DFNB31 has not been previously reported in individual s with hearing loss, but has been identified in 1/16512 of South Asian chromosom es by the Exome Aggregation Consortium (ExAC, http://exac.broadinstitute.org). T he threonine (Thr) at position 1547 is not highly conserved in mammals or evolut ionary distant species, and one mammal (Alpaca) has an Isoleucine (Ile) at this position, raising the possibility that this change at this position may be toler ated. Additional computational prediction tools do not provide strong support fo r or against an impact to the protein. In summary, the clinical significance of the p.Thr516Ile variant is uncertain. -

not provided Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

Aug 21, 2022

In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance. Algorithms developed to predict the effect of missense changes on protein structure and function are either unavailable or do not agree on the potential impact of this missense change (SIFT: "Deleterious"; PolyPhen-2: "Benign"; Align-GVGD: "Class C15"). ClinVar contains an entry for this variant (Variation ID: 228560). This variant has not been reported in the literature in individuals affected with WHRN-related conditions. This variant is present in population databases (rs756090687, gnomAD 0.003%). This sequence change replaces threonine, which is neutral and polar, with isoleucine, which is neutral and non-polar, at codon 516 of the WHRN protein (p.Thr516Ile). -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.12
BayesDel_addAF	Benign	-0.21	T
BayesDel_noAF	Benign	-0.44
CADD	Benign	22
DANN	Uncertain	1.0
DEOGEN2	Benign	0.16	.;.;T
Eigen	Uncertain	0.53
Eigen_PC	Uncertain	0.57
FATHMM_MKL	Pathogenic	0.98	D
LIST_S2	Benign	0.82	T;T;T
M_CAP	Benign	0.0095	T
MetaRNN	Benign	0.27	T;T;T
MetaSVM	Benign	-1.2	T
MutationAssessor	Uncertain	2.3	.;.;M
PrimateAI	Benign	0.48	T
PROVEAN	Benign	-1.7	N;N;N
REVEL	Benign	0.070
Sift	Uncertain	0.0040	D;D;D
Sift4G	Uncertain	0.051	T;D;D
Polyphen		0.92, 0.87	.;P;P
Vest4		0.24
MutPred		0.22		.;.;Loss of phosphorylation at T516 (P = 0.0065);
MVP		0.49
MPC		0.22
ClinPred		0.73	D
GERP RS		5.3
Varity_R		0.12
gMVP		0.39

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

Publications

LitVar

Other links and lift over

dbSNP: rs756090687; hg19: chr9-117185673;