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NM_004004.6(GJB2):c.645del (p.Arg216fs) AND not provided

Germline classification:
Likely pathogenic (1 submission)
Last evaluated:
Jun 30, 2017
Review status:
1 star out of maximum of 4 stars
criteria provided, single submitter
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:
RCV000521635.1

Allele description [Variation Report for NM_004004.6(GJB2):c.645del (p.Arg216fs)]

NM_004004.6(GJB2):c.645del (p.Arg216fs)

Gene:
GJB2:gap junction protein beta 2 [Gene - OMIM - HGNC]
Variant type:
Deletion
Cytogenetic location:
13q12.11
Genomic location:
Preferred name:
NM_004004.6(GJB2):c.645del (p.Arg216fs)
HGVS:
  • NC_000013.11:g.20188938del
  • NG_008358.1:g.9039del
  • NM_004004.5:c.645del
  • NM_004004.6:c.645delMANE SELECT
  • NP_003995.2:p.Arg216fs
  • LRG_1350t1:c.645del
  • LRG_1350:g.9039del
  • LRG_1350p1:p.Arg216fs
  • NC_000013.10:g.20763076delA
  • NC_000013.10:g.20763077del
  • NM_004004.5:c.645delT
  • p.Arg216AspfsX18
Protein change:
R216fs
Links:
dbSNP: rs1555341794
NCBI 1000 Genomes Browser:
rs1555341794
Molecular consequence:
  • NM_004004.6:c.645del - frameshift variant - [Sequence Ontology: SO:0001589]

Condition(s)

Synonyms:
none provided
Identifiers:
MedGen: C3661900

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Assertion and evidence details

Submission AccessionSubmitterReview Status
(Assertion method)
Clinical Significance
(Last evaluated)
OriginMethodCitations
SCV000617684GeneDx
criteria provided, single submitter

(GeneDx Variant Classification (06012015))
Likely pathogenic
(Jun 30, 2017)
germlineclinical testing

Citation Link

Summary from all submissions

EthnicityOriginAffectedIndividualsFamiliesChromosomes testedNumber TestedFamily historyMethod
not providedgermlineyesnot providednot providednot providednot providednot providedclinical testing

Details of each submission

From GeneDx, SCV000617684.2

#EthnicityIndividualsChromosomes TestedFamily HistoryMethodCitations
1not providednot providednot providednot providedclinical testingnot provided

Description

The c.645delT variant in the GJB2 gene has been reported previously, using alternate nomenclature as c.644delT, along with the c.35delG variant in a pediatric patient with prelingual nonsyndromic sensorineural hearing loss, though it was unclear if the parents were tested to determine phase of the variants (Angeli et al., 2008; King et al., 2012). The c.645delT variant causes a frameshift starting with codon Arginine 216, changes this amino acid to an Aspartic acid residue, and creates a premature Stop codon at position 18 of the new reading frame, denoted p.Arg216AspfsX18. The c.645delT variant is not observed in large population cohorts (Lek et al., 2016; 1000 Genomes Consortium et al., 2015; Exome Variant Server). We interpret c.645delT as a likely pathogenic variant.

#SampleMethodObservation
OriginAffectedNumber testedTissuePurposeMethodIndividualsAllele frequencyFamiliesCo-occurrences
1germlineyesnot providednot providednot providednot providednot providednot providednot provided

Last Updated: Jun 23, 2024