rs201312509

Variant names:

• chr15-43609278-C-T
• rs2597064
• NM_153700.2:c.3555G>A

Variant summary

Our verdict is Benign. The variant received -14 ACMG points: 0P and 14B. BP4_Strong BP6_Very_Strong BP7 BS2_Supporting

The NM_153700.2(STRC):​c.3555G>A​(p.Leu1185Leu) variant causes a splice region, synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000119 in 1,609,782 control chromosomes in the GnomAD database, including 2 homozygotes. In-silico tool predicts a benign outcome for this variant. 3/3 splice prediction tools predict no significant impact on normal splicing. Variant has been reported in ClinVar as Likely benign (★★).

• Frequency:
  • Genomes: 𝑓 0.00014 (0 hom., cov: 26)
  • Exomes 𝑓: 0.00012 (2 hom.)
• Consequence: STRC NM_153700.2 splice_region, synonymous
• Scores: Splicing: ADA: 0.00002065
• Clinical Significance: Likely benign criteria provided, multiple submitters, no conflicts B:4
• Conservation: PhyloP100: -0.612
• Publications: 0 publications found

Genes affected

STRC (HGNC:16035): (stereocilin) This gene encodes a protein that is associated with the hair bundle of the sensory hair cells in the inner ear. The hair bundle is composed of stiff microvilli called stereocilia and is involved with mechanoreception of sound waves. This gene is part of a tandem duplication on chromosome 15; the second copy is a pseudogene. Mutations in this gene cause autosomal recessive non-syndromic deafness. [provided by RefSeq, Jul 2008]

STRC Gene-Disease associations (from GenCC):

• nonsyndromic genetic hearing loss

  Inheritance: AR Classification: DEFINITIVE Submitted by: ClinGen
• autosomal recessive nonsyndromic hearing loss 16

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

  Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet

ACMG classification

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

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.56).
• BP6: Variant 15-43609278-C-T is Benign according to our data. Variant chr15-43609278-C-T is described in ClinVar as Likely_benign. ClinVar VariationId is 227966.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.
• BP7: Synonymous conserved (PhyloP=-0.612 with no splicing effect.
• BS2: High Homozygotes in GnomAdExome4 at 2 AR geneVariant has number of homozygotes lower than other variant known as pathogenic in the gene, so the strength is limited to Supporting.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
STRC	NM_153700.2	c.3555G>A	p.Leu1185Leu	splice_region_variant, synonymous_variant	Exon 16 of 29	ENST00000450892.7	NP_714544.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
STRC	ENST00000450892.7	c.3555G>A	p.Leu1185Leu	splice_region_variant, synonymous_variant	Exon 16 of 29	5	NM_153700.2	ENSP00000401513.2

Frequencies

GnomAD3 genomes AF: 0.000140 AC: 21 AN: 150268 Hom.: 0 Cov.: 26

Gnomad AFR AF: 0.0000251

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.0000657

Gnomad ASJ AF: 0.00

Gnomad EAS AF: 0.000394

Gnomad SAS AF: 0.00

Gnomad FIN AF: 0.0000943

Gnomad MID AF: 0.00

Gnomad NFE AF: 0.000235

Gnomad OTH AF: 0.00

GnomAD2 exomes AF: 0.0000399 AC: 10 AN: 250618 AF XY: 0.0000443

Gnomad AFR exome AF: 0.00

Gnomad AMR exome AF: 0.0000289

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.0000550

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.0000617

Gnomad OTH exome AF: 0.00

GnomAD4 exome AF: 0.000117 AC: 171 AN: 1459404 Hom.: 2 Cov.: 31 AF XY: 0.000124 AC XY: 90 AN XY: 726080

⚠️ The allele balance in gnomAD version 4 Exomes is significantly skewed from the expected value of 0.5.

African (AFR) AF: 0.00 AC: 0 AN: 32800

American (AMR) AF: 0.0000448 AC: 2 AN: 44692

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26076

East Asian (EAS) AF: 0.000356 AC: 14 AN: 39362

South Asian (SAS) AF: 0.000267 AC: 23 AN: 86152

European-Finnish (FIN) AF: 0.0000187 AC: 1 AN: 53400

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5750

European-Non Finnish (NFE) AF: 0.000113 AC: 126 AN: 1110930

Other (OTH) AF: 0.0000830 AC: 5 AN: 60242

⚠️ The allele balance in gnomAD4 Exomes is highly skewed from 0.5 (p-value = 0), which strongly suggests a high chance of mosaicism in these individuals.

GnomAD4 genome AF: 0.000140 AC: 21 AN: 150378 Hom.: 0 Cov.: 26 AF XY: 0.000150 AC XY: 11 AN XY: 73494

⚠️ The allele balance in gnomAD version 4 Genomes is significantly skewed from the expected value of 0.5.

African (AFR) AF: 0.0000250 AC: 1 AN: 39938

American (AMR) AF: 0.0000656 AC: 1 AN: 15238

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 3466

East Asian (EAS) AF: 0.000395 AC: 2 AN: 5062

South Asian (SAS) AF: 0.00 AC: 0 AN: 4792

European-Finnish (FIN) AF: 0.0000943 AC: 1 AN: 10606

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

European-Non Finnish (NFE) AF: 0.000235 AC: 16 AN: 67970

Other (OTH) AF: 0.00 AC: 0 AN: 2100

⚠️ The allele balance in gnomAD version 4 Genomes is significantly skewed from the expected value of 0.5. (p-value = 0.000000000000000777156), which strongly suggests a high chance of mosaicism in these individuals.

Alfa AF: 0.000337 Hom.: 0

ClinVar

Significance: Likely benign

Submissions summary: Benign:4

Revision: criteria provided, multiple submitters, no conflicts

Submissions by phenotype

not provided Benign:2

Jul 22, 2020

Athena Diagnostics

Significance: Likely benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

-

Breakthrough Genomics, Breakthrough Genomics

Significance: Likely benign

Review Status: criteria provided, single submitter

Collection Method: not provided

- -

not specified Benign:1

Jul 30, 2015

Laboratory for Molecular Medicine, Mass General Brigham Personalized Medicine

Significance: Likely benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

p.Leu1185Leu in exon 16 of STRC: This variant is not expected to have clinical s ignificance because it does not alter an amino acid residue and is not located w ithin the splice consensus sequence. -

Autosomal recessive nonsyndromic hearing loss 16 Benign:1

-

Genome-Nilou Lab

Significance: Likely benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.56
CADD	Benign	2.9
DANN	Benign	0.77
PhyloP100		-0.61

Splicing

Name	Calibrated prediction	Score	Prediction
dbscSNV1_ADA	Benign	0.000021
dbscSNV1_RF	Benign	0.0020
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: rs2597064; hg19: chr15-43901476;