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NM_014043.4(CHMP2B):c.64C>T (p.Arg22Ter) AND CHMP2B-related disorder

Germline classification:
Uncertain significance (1 submission)
Last evaluated:
Sep 12, 2023
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:
RCV003392657.4

Allele description [Variation Report for NM_014043.4(CHMP2B):c.64C>T (p.Arg22Ter)]

NM_014043.4(CHMP2B):c.64C>T (p.Arg22Ter)

Gene:
CHMP2B:charged multivesicular body protein 2B [Gene - OMIM - HGNC]
Variant type:
single nucleotide variant
Cytogenetic location:
3p11.2
Genomic location:
Preferred name:
NM_014043.4(CHMP2B):c.64C>T (p.Arg22Ter)
HGVS:
  • NC_000003.12:g.87240728C>T
  • NG_007885.1:g.18466C>T
  • NM_001244644.2:c.4-4986C>T
  • NM_014043.4:c.64C>TMANE SELECT
  • NP_054762.2:p.Arg22Ter
  • NC_000003.11:g.87289878C>T
  • NC_000003.11:g.87289878C>T
  • NM_014043.3:c.64C>T
Protein change:
R22*
Links:
dbSNP: rs138886714
NCBI 1000 Genomes Browser:
rs138886714
Molecular consequence:
  • NM_001244644.2:c.4-4986C>T - intron variant - [Sequence Ontology: SO:0001627]
  • NM_014043.4:c.64C>T - nonsense - [Sequence Ontology: SO:0001587]

Condition(s)

Name:
CHMP2B-related disorder
Synonyms:
CHMP2B-related condition
Identifiers:

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Assertion and evidence details

Help
Submission AccessionSubmitterReview Status
(Assertion method)		Clinical Significance
(Last evaluated)		OriginMethodCitations
SCV004120663PreventionGenetics, part of Exact Sciences
criteria provided, single submitter

(ACMG Guidelines, 2015)		Uncertain significance
(Sep 12, 2023) 		germlineclinical testing

PubMed (1)
[See all records that cite this PMID]

Help

Summary from all submissions

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

Citations

PubMed

Standards and guidelines for the interpretation of sequence variants: a joint consensus recommendation of the American College of Medical Genetics and Genomics and the Association for Molecular Pathology.

Richards S, Aziz N, Bale S, Bick D, Das S, Gastier-Foster J, Grody WW, Hegde M, Lyon E, Spector E, Voelkerding K, Rehm HL; ACMG Laboratory Quality Assurance Committee..

Genet Med. 2015 May;17(5):405-24. doi: 10.1038/gim.2015.30. Epub 2015 Mar 5.

PubMed [citation]
PMID:
25741868
PMCID:
PMC4544753

Details of each submission

From PreventionGenetics, part of Exact Sciences, SCV004120663.1

#EthnicityIndividualsChromosomes TestedFamily HistoryMethodCitations
1not providednot providednot providednot providedclinical testing PubMed (1)

Description

The CHMP2B c.64C>T variant is predicted to result in premature protein termination (p.Arg22*). While this variant has been reported in one individual with frontotemporal dementia (Ramos et al. 2020. PubMed ID: 31914217), in gnomAD, it is present at an elevated frequency in older individuals not known to be affected by neurodegeneration. Specifically, this variant is reported in 0.53% of alleles in individuals of Ashkenazi Jewish descent in gnomAD (http://gnomad.broadinstitute.org/variant/3-87289878-C-T). Although we suspect this variant may be benign, at this time, the clinical significance of this variant is uncertain due to the absence of conclusive functional and genetic evidence.

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

Last Updated: May 12, 2024