rs61731363
Variant summary
Our verdict is Benign. The variant received -20 ACMG points: 0P and 20B. BP4_StrongBP6_Very_StrongBS1BS2
The NM_033056.4(PCDH15):c.2435T>C(p.Ile812Thr) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.0006 in 1,613,974 control chromosomes in the GnomAD database, including 4 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. I812M) has been classified as Uncertain significance.
Frequency
Consequence
NM_033056.4 missense
Scores
Clinical Significance
Conservation
Publications
- autosomal recessive nonsyndromic hearing loss 23Inheritance: AR Classification: DEFINITIVE, STRONG, LIMITED Submitted by: Laboratory for Molecular Medicine, Labcorp Genetics (formerly Invitae), PanelApp Australia
- Usher syndrome type 1Inheritance: AR Classification: DEFINITIVE, SUPPORTIVE Submitted by: ClinGen, Orphanet
- Usher syndrome type 1FInheritance: AR Classification: DEFINITIVE, STRONG Submitted by: G2P, Labcorp Genetics (formerly Invitae), PanelApp Australia
- hearing loss, autosomal recessiveInheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet
- nonsyndromic genetic hearing lossInheritance: AR Classification: LIMITED Submitted by: ClinGen
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ACMG classification
Our verdict: Benign. The variant received -20 ACMG points.
Transcripts
RefSeq
Ensembl
| Gene | Transcript | HGVSc | HGVSp | Effect | Exon rank | TSL | MANE | Protein | Appris | UniProt |
|---|---|---|---|---|---|---|---|---|---|---|
| PCDH15 | ENST00000320301.11 | c.2435T>C | p.Ile812Thr | missense_variant | Exon 19 of 33 | 1 | NM_033056.4 | ENSP00000322604.6 | ||
| PCDH15 | ENST00000644397.2 | c.2435T>C | p.Ile812Thr | missense_variant | Exon 19 of 38 | NM_001384140.1 | ENSP00000495195.1 |
Frequencies
GnomAD3 genomes AF: 0.00309 AC: 470AN: 152112Hom.: 2 Cov.: 32 show subpopulations
GnomAD2 exomes AF: 0.000696 AC: 175AN: 251336 AF XY: 0.000545 show subpopulations
GnomAD4 exome AF: 0.000335 AC: 490AN: 1461744Hom.: 2 Cov.: 31 AF XY: 0.000278 AC XY: 202AN XY: 727166 show subpopulations
Age Distribution
GnomAD4 genome AF: 0.00315 AC: 479AN: 152230Hom.: 2 Cov.: 32 AF XY: 0.00288 AC XY: 214AN XY: 74428 show subpopulations
Age Distribution
ClinVar
Submissions by phenotype
not provided Benign:8
This variant is associated with the following publications: (PMID: 27766948) -
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PCDH15: BS1 -
not specified Benign:3
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Ile812Thr in Exon 19 of PCDH15: This variant is not expected to have clinical si gnificance because it has been identified in 0.7% (26/3738) of African American chromosomes from a broad population by the NHLBI Exome Sequencing Project (http: //evs.gs.washington.edu/EVS; dbSNP rs61731363). -
Variant summary: PCDH15 c.2435T>C (p.Ile812Thr) results in a non-conservative amino acid change located in the Cadherin-like domain (IPR002126) of the encoded protein sequence. Four of five in-silico tools predict a damaging effect of the variant on protein function. The variant allele was found at a frequency of 0.0031 in 152112 control chromosomes, predominantly at a frequency of 0.011 within the African or African-American subpopulation in the gnomAD v3 database (genomes data), including 2 homozygotes. The observed variant frequency within African or African-American control individuals in the gnomAD database is approximately 3.5 fold of the estimated maximal expected allele frequency for a pathogenic variant in PCDH15 causing Usher Syndrome Type 1F phenotype (0.0032), strongly suggesting that the variant is a benign polymorphism found primarily in populations of African or African-American origin. To our knowledge, no experimental evidence demonstrating its impact on protein function have been reported. Six ClinVar submitters (evaluation after 2014) cite the variant as likely benign (n=4) and benign (n=2). Based on the evidence outlined above, the variant was classified as benign. -
Usher syndrome type 1F Benign:1
This submission and the accompanying classification are no longer maintained by the submitter. For more information on current observations and classification, please contact variantquestions@myriad.com. -
Usher syndrome type 1 Benign:1
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:
Splicing
Find out detailed SpliceAI scores and Pangolin per-transcript scores at