11-17494201-C-G

Variant names:

• chr11-17494201-C-G
• rs550402400
• ENST00000526313.5:n.*536G>C

Variant summary

Our verdict is Benign. The variant received -14 ACMG points: 0P and 14B. BP4_Strong BP6_Moderate BS1 BS2

The NM_153676.4(USH1C):​c.*131G>C variant causes a 3 prime UTR change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000721 in 1,204,786 control chromosomes in the GnomAD database, including 14 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★).

• Frequency:
  • Genomes: 𝑓 0.00036 (0 hom., cov: 33)
  • Exomes 𝑓: 0.00077 (14 hom.)
• Consequence: USH1C NM_153676.4 3_prime_UTR
• Clinical Significance: Likely benign criteria provided, single submitter B:1
• Conservation: PhyloP100: -0.0430
• Publications: 0 publications found

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 Gene-Disease associations (from GenCC):

• Usher syndrome type 1

  Inheritance: AR Classification: DEFINITIVE, SUPPORTIVE Submitted by: ClinGen, Orphanet
• Usher syndrome type 1C

  Inheritance: AR Classification: DEFINITIVE, STRONG Submitted by: Laboratory for Molecular Medicine, Labcorp Genetics (formerly Invitae), G2P, Ambry Genetics, PanelApp Australia
• autosomal recessive nonsyndromic hearing loss 18A

  Inheritance: AR, Unknown Classification: STRONG, MODERATE, LIMITED Submitted by: Labcorp Genetics (formerly Invitae), Ambry Genetics, PanelApp Australia
• hearing loss, autosomal recessive

  Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet
• nonsyndromic genetic hearing loss

  Inheritance: AR Classification: LIMITED Submitted by: ClinGen

ACMG classification

Our verdict: Benign. The variant received -14 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.82).
• BP6: Variant 11-17494201-C-G is Benign according to our data. Variant chr11-17494201-C-G is described in ClinVar as [Likely_benign]. Clinvar id is 879078.Status of the report is criteria_provided_single_submitter, 1 stars.
• BS1: Variant frequency is greater than expected in population sas. GnomAd4 allele frequency = 0.000361 (55/152234) while in subpopulation SAS AF = 0.0114 (55/4816). AF 95% confidence interval is 0.00901. There are 0 homozygotes in GnomAd4. There are 35 alleles in the male GnomAd4 subpopulation. Median coverage is 33. This position passed quality control check.
• BS2: High Homozygotes in GnomAdExome4 at 14 AR,Unknown gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
USH1C	NM_153676.4	c.*131G>C		3_prime_UTR_variant	Exon 27 of 27	ENST00000005226.12	NP_710142.1
USH1C	NM_005709.4	c.*163G>C		3_prime_UTR_variant	Exon 21 of 21	ENST00000318024.9	NP_005700.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
USH1C	ENST00000005226.12	c.*131G>C		3_prime_UTR_variant	Exon 27 of 27	5	NM_153676.4	ENSP00000005226.7
USH1C	ENST00000318024.9	c.*163G>C		3_prime_UTR_variant	Exon 21 of 21	1	NM_005709.4	ENSP00000317018.4

Frequencies

GnomAD3 genomes AF: 0.000368 AC: 56 AN: 152116 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: 0.0116

Gnomad FIN AF: 0.00

Gnomad MID AF: 0.00

Gnomad NFE AF: 0.00

Gnomad OTH AF: 0.00

GnomAD4 exome AF: 0.000773 AC: 814 AN: 1052552 Hom.: 14 Cov.: 13 AF XY: 0.00106 AC XY: 567 AN XY: 533104

African (AFR) AF: 0.00 AC: 0 AN: 24740

American (AMR) AF: 0.00 AC: 0 AN: 35032

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 22884

East Asian (EAS) AF: 0.00 AC: 0 AN: 33966

South Asian (SAS) AF: 0.0107 AC: 773 AN: 72062

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 48646

Middle Eastern (MID) AF: 0.000278 AC: 1 AN: 3600

European-Non Finnish (NFE) AF: 0.0000118 AC: 9 AN: 765250

Other (OTH) AF: 0.000669 AC: 31 AN: 46372

GnomAD4 genome AF: 0.000361 AC: 55 AN: 152234 Hom.: 0 Cov.: 33 AF XY: 0.000470 AC XY: 35 AN XY: 74424

African (AFR) AF: 0.00 AC: 0 AN: 41538

American (AMR) AF: 0.00 AC: 0 AN: 15296

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 3468

East Asian (EAS) AF: 0.00 AC: 0 AN: 5176

South Asian (SAS) AF: 0.0114 AC: 55 AN: 4816

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 10608

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 294

European-Non Finnish (NFE) AF: 0.00 AC: 0 AN: 68014

Other (OTH) AF: 0.00 AC: 0 AN: 2112

Alfa AF: 0.00 Hom.: 0

Bravo AF: 0.0000604

Asia WGS AF: 0.00375 AC: 13 AN: 3478

ClinVar

Significance: Likely benign

Submissions summary: Benign:1

Revision: criteria provided, single submitter

Submissions by phenotype

Usher syndrome type 1C Benign:1

Jan 13, 2018

Illumina Laboratory Services, Illumina

Significance: Likely benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

This variant was observed in the ICSL laboratory as part of a predisposition screen in an ostensibly healthy population. It had not been previously curated by ICSL or reported in the Human Gene Mutation Database (HGMD: prior to June 1st, 2018), and was therefore a candidate for classification through an automated scoring system. Utilizing variant allele frequency, disease prevalence and penetrance estimates, and inheritance mode, an automated score was calculated to assess if this variant is too frequent to cause the disease. Based on the score and internal cut-off values, a variant classified as likely benign is not then subjected to further curation. The score for this variant resulted in a classification of likely benign for this disease. -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.82
CADD	Benign	4.4
DANN	Benign	0.60
PhyloP100		-0.043
Mutation Taster		=100/0	polymorphism

Splicing

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

Other links and lift over

dbSNP: rs550402400; hg19: chr11-17515748;