NM_022124.6(CDH23):c.8311G>A (p.Gly2771Ser) AND not provided

Germline classification:: Uncertain significance (5 submissions)
Last evaluated:: Apr 8, 2024
Review status:: 2 stars out of maximum of 4 stars
criteria provided, multiple submitters, no conflicts

Somatic classification of clinical impact:: None
Review status:: (0/4) 0 stars out of maximum of 4 stars
no assertion criteria provided

Somatic classification of oncogenicity:: None
Review status:: (0/4) 0 stars out of maximum of 4 stars
no assertion criteria provided

Record status:: current
Accession:: RCV001053772.9

Allele description [Variation Report for NM_022124.6(CDH23):c.8311G>A (p.Gly2771Ser)]

NM_022124.6(CDH23):c.8311G>A (p.Gly2771Ser)

Gene:

CDH23:cadherin related 23 [Gene - OMIM - HGNC]

Variant type:

single nucleotide variant

Cytogenetic location:

10q22.1

Genomic location:

Preferred name:

NM_022124.6(CDH23):c.8311G>A (p.Gly2771Ser)

HGVS:

NC_000010.11:g.71807518G>A
NG_008835.1:g.415572G>A
NM_001171933.1:c.1591G>A
NM_001171934.1:c.1591G>A
NM_022124.6:c.8311G>AMANE SELECT
NP_001165404.1:p.Gly531Ser
NP_001165405.1:p.Gly531Ser
NP_071407.4:p.Gly2771Ser
NC_000010.10:g.73567275G>A
NM_022124.5:c.8311G>A

Protein change:

G2771S

Links:

dbSNP: rs201076440

NCBI 1000 Genomes Browser:

rs201076440

Molecular consequence:

NM_001171933.1:c.1591G>A - missense variant - [Sequence Ontology: SO:0001583]
NM_001171934.1:c.1591G>A - missense variant - [Sequence Ontology: SO:0001583]
NM_022124.6:c.8311G>A - missense variant - [Sequence Ontology: SO:0001583]

Condition(s)

Synonyms:: none provided
Identifiers:: MedGen: C3661900

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Submission Accession	Submitter	Review Status (Assertion method)	Clinical Significance (Last evaluated)	Origin	Method	Citations
SCV001218049	Labcorp Genetics (formerly Invitae), Labcorp	criteria provided, single submitter (Invitae Variant Classification Sherloc (09022015))	Uncertain significance (Aug 22, 2022)	germline	clinical testing	PubMed (2) [See all records that cite these PMIDs] 18429043, 28492532
SCV001818597	GeneDx	criteria provided, single submitter (GeneDx Variant Classification Process June 2021)	Uncertain significance (Apr 8, 2024)	germline	clinical testing	Citation Link,
SCV001979561	Joint Genome Diagnostic Labs from Nijmegen and Maastricht, Radboudumc and MUMC+ - VKGL Data-share Consensus See additional submitters Diagnostic Laboratory, Department of Genetics, University Medical Center Groningen	no assertion criteria provided	Uncertain significance	germline	clinical testing
SCV001980073	Clinical Genetics DNA and cytogenetics Diagnostics Lab, Erasmus MC, Erasmus Medical Center - VKGL Data-share Consensus See additional submitters Diagnostic Laboratory, Department of Genetics, University Medical Center Groningen	no assertion criteria provided	Uncertain significance	germline	clinical testing
SCV005197422	Clinical Genetics Laboratory, Skane University Hospital Lund	criteria provided, single submitter (ACMG Guidelines, 2015)	Uncertain significance (May 27, 2022)	germline	clinical testing	PubMed (1) [See all records that cite this PMID]

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Summary from all submissions

Ethnicity	Origin	Affected	Individuals	Families	Chromosomes tested	Number Tested	Family history	Method
not provided	germline	yes	not provided	not provided	not provided	not provided	not provided	clinical testing
not provided	germline	unknown	not provided	not provided	not provided	not provided	not provided	clinical testing

Citations

PubMed

Mutation profile of the CDH23 gene in 56 probands with Usher syndrome type I.

Oshima A, Jaijo T, Aller E, Millan JM, Carney C, Usami S, Moller C, Kimberling WJ.

Hum Mutat. 2008 Jun;29(6):E37-46. doi: 10.1002/humu.20761.

PubMed [citation]

PMID:: 18429043
PMCID:: PMC2399895

Sherloc: a comprehensive refinement of the ACMG-AMP variant classification criteria.

Nykamp K, Anderson M, Powers M, Garcia J, Herrera B, Ho YY, Kobayashi Y, Patil N, Thusberg J, Westbrook M; Invitae Clinical Genomics Group., Topper S.

Genet Med. 2017 Oct;19(10):1105-1117. doi: 10.1038/gim.2017.37. Epub 2017 May 11. Erratum in: Genet Med. 2020 Jan;22(1):240. doi: 10.1038/s41436-019-0624-9.

PubMed [citation]

PMID:: 28492532
PMCID:: PMC5632818

See all PubMed Citations (3)

Details of each submission

From Labcorp Genetics (formerly Invitae), Labcorp, SCV001218049.2

#	Ethnicity	Individuals	Chromosomes Tested	Family History	Method	Citations
1	not provided	not provided	not provided	not provided	clinical testing	PubMed (2)

Description

This sequence change replaces glycine, which is neutral and non-polar, with serine, which is neutral and polar, at codon 2771 of the CDH23 protein (p.Gly2771Ser). This variant is present in population databases (rs201076440, gnomAD 0.07%). This missense change has been observed in individual(s) with Usher syndrome (PMID: 18429043). ClinVar contains an entry for this variant (Variation ID: 177767). 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: "Not Available"; Align-GVGD: "Class C0"). Algorithms developed to predict the effect of sequence changes on RNA splicing suggest that this variant may create or strengthen a splice site. 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.

#	Sample				Method		Observation
#	Origin	Affected	Number tested	Tissue	Purpose	Method	Individuals	Allele frequency	Families	Co-occurrences
1	germline	unknown	not provided	not provided	not provided		not provided	not provided	not provided	not provided

From GeneDx, SCV001818597.2

#	Ethnicity	Individuals	Chromosomes Tested	Family History	Method	Citations
1	not provided	not provided	not provided	not provided	clinical testing	not provided

Description

Observed in the heterozygous state in an individual with Usher syndrome without a second variant identified in published literature (PMID: 18429043); In silico analysis supports that this missense variant has a deleterious effect on protein structure/function; In silico analysis suggests this variant may impact gene splicing. In the absence of RNA/functional studies, the actual effect of this sequence change is unknown.; This variant is associated with the following publications: (PMID: 18429043, 30245029, 32707200, 36147510)

#	Sample				Method		Observation
#	Origin	Affected	Number tested	Tissue	Purpose	Method	Individuals	Allele frequency	Families	Co-occurrences
1	germline	yes	not provided	not provided	not provided		not provided	not provided	not provided	not provided

From Joint Genome Diagnostic Labs from Nijmegen and Maastricht, Radboudumc and MUMC+ - VKGL Data-share Consensus, SCV001979561.1

#	Ethnicity	Individuals	Chromosomes Tested	Family History	Method	Citations
1	not provided	not provided	not provided	not provided	clinical testing	not provided

#	Sample				Method		Observation
#	Origin	Affected	Number tested	Tissue	Purpose	Method	Individuals	Allele frequency	Families	Co-occurrences
1	germline	yes	not provided	not provided	not provided		not provided	not provided	not provided	not provided

From Clinical Genetics DNA and cytogenetics Diagnostics Lab, Erasmus MC, Erasmus Medical Center - VKGL Data-share Consensus, SCV001980073.1

#	Ethnicity	Individuals	Chromosomes Tested	Family History	Method	Citations
1	not provided	not provided	not provided	not provided	clinical testing	not provided

#	Sample				Method		Observation
#	Origin	Affected	Number tested	Tissue	Purpose	Method	Individuals	Allele frequency	Families	Co-occurrences
1	germline	yes	not provided	not provided	not provided		not provided	not provided	not provided	not provided

From Clinical Genetics Laboratory, Skane University Hospital Lund, SCV005197422.1

#	Ethnicity	Individuals	Chromosomes Tested	Family History	Method	Citations
1	not provided	not provided	not provided	not provided	clinical testing	PubMed (1)

#	Sample				Method		Observation
#	Origin	Affected	Number tested	Tissue	Purpose	Method	Individuals	Allele frequency	Families	Co-occurrences
1	germline	yes	not provided	not provided	not provided		not provided	not provided	not provided	not provided

Last Updated: Sep 29, 2024

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