11-17527222-C-T

Position:

chr11-17527222-C-T

Variant summary

Our verdict is Pathogenic. Variant got 18 ACMG points: 18P and 0B. PVS1PM2PP5_Very_Strong

The NM_153676.4(USH1C):c.496+1G>A variant causes a splice donor, intron change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.0000707 in 1,499,138 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. 3/3 splice prediction tools predicting alterations to normal splicing. Variant has been reported in ClinVar as Pathogenic (★★).

Frequency

Genomes: 𝑓 0.000051 ( 0 hom., cov: 25)

Exomes 𝑓: 0.000072 ( 0 hom. )

Consequence

USH1C
NM_153676.4 splice_donor, intron

Scores

Splicing: ADA: 1.000

Clinical Significance

Pathogenic criteria provided, multiple submitters, no conflicts P:10

Conservation

PhyloP100: 7.57

Variant links:

Genes affected

USH1C (HGNC:12597): (USH1 protein network component harmonin) This gene encodes a scaffold protein that functions in the assembly of Usher protein complexes. The protein contains PDZ domains, a coiled-coil region with a bipartite nuclear localization signal and a PEST degradation sequence. Defects in this gene are the cause of Usher syndrome type 1C and non-syndromic sensorineural deafness autosomal recessive type 18. Multiple transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Mar 2009]

USH1C links:

USH1C (HGNC:):

USH1C links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Pathogenic. Variant got 18 ACMG points.

PVS1

Splicing +-2 bp (donor or acceptor) variant, LoF is a know mechanism of disease, Cryptic splice site detected, with MaxEntScore 4.2, offset of -7, new splice context is: aaaGTgaga. Cryptic site results in frameshift change. If cryptic site found is not functional and variant results in exon loss, it results in frameshift change.

PM2

Very rare variant in population databases, with high coverage;

PP5

Variant 11-17527222-C-T is Pathogenic according to our data. Variant chr11-17527222-C-T is described in ClinVar as [Pathogenic]. Clinvar id is 371732.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars. Variant chr11-17527222-C-T is described in Lovd as [Pathogenic]. Variant chr11-17527222-C-T is described in Lovd as [Likely_pathogenic].

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
USH1C	NM_153676.4 linkuse as main transcript	c.496+1G>A		splice_donor_variant, intron_variant		ENST00000005226.12	NP_710142.1	Q9Y6N9-5
USH1C	NM_005709.4 linkuse as main transcript	c.496+1G>A		splice_donor_variant, intron_variant		ENST00000318024.9	NP_005700.2	Q9Y6N9-1A0A0S2Z4U9

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
USH1C	ENST00000005226.12 linkuse as main transcript	c.496+1G>A		splice_donor_variant, intron_variant		5	NM_153676.4	ENSP00000005226.7		Q9Y6N9-5
USH1C	ENST00000318024.9 linkuse as main transcript	c.496+1G>A		splice_donor_variant, intron_variant		1	NM_005709.4	ENSP00000317018.4		Q9Y6N9-1

Frequencies

GnomAD3 genomes

AF:

0.0000506

AC:

AN:

118486

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000266

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.0000953

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:

0.0000785

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000199

AC:

AN:

251276

Hom.:

AF XY:

0.0000294

AC XY:

AN XY:

135828

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.0000289

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000352

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000724

AC:

100

AN:

1380652

Hom.:

Cov.:

AF XY:

0.0000758

AC XY:

AN XY:

686186

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.0000236

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.0000929

Gnomad4 OTH exome

AF:

0.0000180

GnomAD4 genome

AF:

0.0000506

AC:

AN:

118486

Hom.:

Cov.:

AF XY:

0.0000526

AC XY:

AN XY:

57020

show subpopulations

Gnomad4 AFR

AF:

0.0000266

Gnomad4 AMR

AF:

0.0000953

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000785

Gnomad4 OTH

AF:

0.00

Bravo

AF:

0.0000604

ESP6500AA

AF:

0.00

AC:

ESP6500EA

AF:

0.000116

AC:

ExAC

AF:

0.0000330

AC:

EpiCase

AF:

0.0000545

EpiControl

AF:

0.0000593

ClinVar

Significance: Pathogenic

Submissions summary: Pathogenic:10

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

Usher syndrome type 1C

Pathogenic:6

Pathogenic, criteria provided, single submitter	clinical testing	Center for Genomic Medicine, King Faisal Specialist Hospital and Research Center	Apr 04, 2024	- -
Pathogenic, no assertion criteria provided	clinical testing	Natera, Inc.	Aug 21, 2020	- -
Pathogenic, no assertion criteria provided	literature only	OMIM	Jan 01, 2012	- -
Pathogenic, criteria provided, single submitter	clinical testing	Institute of Human Genetics, Cologne University	Sep 13, 2023	- -
Pathogenic, criteria provided, single submitter	clinical testing	Victorian Clinical Genetics Services, Murdoch Childrens Research Institute	Oct 09, 2024	Based on the classification scheme VCGS_Germline_v1.3.4, this variant is classified as Pathogenic. Following criteria are met: 0102 - Loss of function is a known mechanism of disease in this gene and is associated with autosomal recessive deafness 18A (MIM#602092) and Usher syndrome, type 1C (MIM#276904). Dominant negative is a suggested mechanism for rare autosomal dominant non-syndromic hearing loss (NSHL) (PMID: 31858762). (I) 0106 - This gene is associated with autosomal recessive disease. A single, large family with a heterozygous missense variant has been reported with autosomal dominant NSHL (PMID: 31858762). (I) 0211 - Canonical splice site variant without proven consequence on splicing (no functional evidence available). (SP) 0251 - This variant is heterozygous. (I) 0304 - Variant is present in gnomAD (v3) <0.01 for a recessive condition (6 heterozygotes, 0 homozygotes). (SP) 0311 - Multiple alternative nucleotide changes at the same canonical splice site are present in gnomAD (v3) (highest allele count: 23 heterozygotes, 0 homozygotes). (SB) 0505 - Abnormal splicing is predicted by in silico tools and affected nucleotide is highly conserved. (SP) 0801 - This variant has strong previous evidence of pathogenicity in unrelated individuals. This variant has been classified as pathogenic by multiple clinical laboratories in ClinVar and has been observed as compound heterozygous and homozygous in individuals with Usher syndrome and non-syndromic hearing loss (PMIDs: 24416283, 22135276, 11139240). (SP) Legend: (SP) - Supporting pathogenic, (I) - Information, (SB) - Supporting benign -
Pathogenic, criteria provided, single submitter	clinical testing	Myriad Genetics, Inc.	Nov 11, 2021	NM_005709.3(USH1C):c.496+1G>A is a canonical splice variant classified as pathogenic in the context of USH1C-related disorders. c.496+1G>A has been observed in cases with relevant disease (PMID: 24416283, 27743452, 11139240). Functional assessments of this variant are not available in the literature. c.496+1G>A has been observed in population frequency databases (gnomAD NFE 0.004%). In summary, NM_005709.3(USH1C):c.496+1G>A is a canonical splice variant in a gene where loss of function is a known mechanism of disease, is predicted to disrupt protein function, and has been observed more frequently in cases with the relevant disease than in healthy populations. Please note: this variant was assessed in the context of healthy population screening. -

not provided

Pathogenic:2

Pathogenic, criteria provided, single submitter	clinical testing	Labcorp Genetics (formerly Invitae), Labcorp	Jan 06, 2024	This sequence change affects a donor splice site in intron 5 of the USH1C gene. It is expected to disrupt RNA splicing. Variants that disrupt the donor or acceptor splice site typically lead to a loss of protein function (PMID: 16199547), and loss-of-function variants in USH1C are known to be pathogenic (PMID: 10973247, 17407589, 20301442, 21203349). This variant is present in population databases (rs138138689, gnomAD 0.006%). Disruption of this splice site has been observed in individuals with Usher syndrome type I and non-syndromic hearing loss (PMID: 11139240, 22135276, 24416283, 27743452). ClinVar contains an entry for this variant (Variation ID: 371732). Algorithms developed to predict the effect of sequence changes on RNA splicing suggest that this variant may disrupt the consensus splice site. For these reasons, this variant has been classified as Pathogenic. -
Pathogenic, criteria provided, single submitter	clinical testing	GeneDx	Feb 27, 2023	Canonical splice site variant in a gene for which loss-of-function is a known mechanism of disease; Not observed at significant frequency in large population cohorts (gnomAD); This variant is associated with the following publications: (PMID: 23647439, 11139240, 27743452, 22135276, 26186295, 24416283, 12786748, 31589614) -

Autosomal recessive nonsyndromic hearing loss 18A

Pathogenic:1

Pathogenic, criteria provided, single submitter

clinical testing

Baylor Genetics

Mar 23, 2024

- -

Inborn genetic diseases

Pathogenic:1

Pathogenic, criteria provided, single submitter

clinical testing

Ambry Genetics

May 08, 2018

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

BayesDel_addAF

Pathogenic

0.33

BayesDel_noAF

Pathogenic

0.41

CADD

Pathogenic

DANN

Uncertain

1.0

Eigen

Pathogenic

1.1

Eigen_PC

Pathogenic

0.95

FATHMM_MKL

Uncertain

0.97

GERP RS

5.1

Splicing

Name

Calibrated prediction

Score

Prediction

dbscSNV1_ADA

Pathogenic

1.0

dbscSNV1_RF

Pathogenic

0.94

SpliceAI score (max)

0.98

Details are displayed if max score is > 0.2

DS_DG_spliceai

0.75

Position offset: 8

DS_DL_spliceai

0.98

Position offset: 1

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

LitVar

Below is the list of publications found by LitVar. It may be empty.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over