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NM_201253.3(CRB1):c.997G>C (p.Gly333Arg) AND multiple conditions

Germline classification:
Pathogenic (1 submission)
Last evaluated:
Jan 18, 2024
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:
RCV001861045.6

Allele description [Variation Report for NM_201253.3(CRB1):c.997G>C (p.Gly333Arg)]

NM_201253.3(CRB1):c.997G>C (p.Gly333Arg)

Gene:
CRB1:crumbs cell polarity complex component 1 [Gene - OMIM - HGNC]
Variant type:
single nucleotide variant
Cytogenetic location:
1q31.3
Genomic location:
Preferred name:
NM_201253.3(CRB1):c.997G>C (p.Gly333Arg)
HGVS:
  • NC_000001.11:g.197356839G>C
  • NG_008483.2:g.160378G>C
  • NM_001193640.2:c.661G>C
  • NM_001257965.2:c.790G>C
  • NM_001257966.2:c.997G>C
  • NM_201253.3:c.997G>CMANE SELECT
  • NP_001180569.1:p.Gly221Arg
  • NP_001244894.1:p.Gly264Arg
  • NP_001244895.1:p.Gly333Arg
  • NP_957705.1:p.Gly333Arg
  • NC_000001.10:g.197325969G>C
  • NM_201253.2:c.997G>C
  • NR_047563.2:n.1158G>C
  • NR_047564.2:n.1158G>C
Protein change:
G221R
Links:
dbSNP: rs778232235
NCBI 1000 Genomes Browser:
rs778232235
Molecular consequence:
  • NM_001193640.2:c.661G>C - missense variant - [Sequence Ontology: SO:0001583]
  • NM_001257965.2:c.790G>C - missense variant - [Sequence Ontology: SO:0001583]
  • NM_001257966.2:c.997G>C - missense variant - [Sequence Ontology: SO:0001583]
  • NM_201253.3:c.997G>C - missense variant - [Sequence Ontology: SO:0001583]
  • NR_047563.2:n.1158G>C - non-coding transcript variant - [Sequence Ontology: SO:0001619]
  • NR_047564.2:n.1158G>C - non-coding transcript variant - [Sequence Ontology: SO:0001619]

Condition(s)

Name:
Retinitis pigmentosa 12 (RP12)
Synonyms:
RP 12; RP WITH OR WITHOUT PPRPE; RP WITH OR WITHOUT PRESERVED PARAARTERIOLE RETINAL PIGMENT EPITHELIUM; See all synonyms [MedGen]
Identifiers:
MONDO: MONDO:0010818; MedGen: C1838647; Orphanet: 791; OMIM: 600105
Name:
Leber congenital amaurosis 8 (LCA8)
Identifiers:
MONDO: MONDO:0013453; MedGen: C3151202; Orphanet: 65; OMIM: 613835

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Assertion and evidence details

Submission AccessionSubmitterReview Status
(Assertion method)
Clinical Significance
(Last evaluated)
OriginMethodCitations
SCV002310184Labcorp Genetics (formerly Invitae), Labcorp
criteria provided, single submitter

(Invitae Variant Classification Sherloc (09022015))
Pathogenic
(Jan 18, 2024)
germlineclinical testing

PubMed (4)
[See all records that cite these PMIDs]

Summary from all submissions

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

Citations

PubMed

Detection of variants in 15 genes in 87 unrelated Chinese patients with Leber congenital amaurosis.

Li L, Xiao X, Li S, Jia X, Wang P, Guo X, Jiao X, Zhang Q, Hejtmancik JF.

PLoS One. 2011;6(5):e19458. doi: 10.1371/journal.pone.0019458. Epub 2011 May 13.

PubMed [citation]
PMID:
21602930
PMCID:
PMC3094346

Molecular characterization of Leber congenital amaurosis in Koreans.

Seong MW, Kim SY, Yu YS, Hwang JM, Kim JY, Park SS.

Mol Vis. 2008 Aug 4;14:1429-36.

PubMed [citation]
PMID:
18682808
PMCID:
PMC2493025
See all PubMed Citations (4)

Details of each submission

From Labcorp Genetics (formerly Invitae), Labcorp, SCV002310184.3

#EthnicityIndividualsChromosomes TestedFamily HistoryMethodCitations
1not providednot providednot providednot providedclinical testing PubMed (4)

Description

This sequence change replaces glycine, which is neutral and non-polar, with arginine, which is basic and polar, at codon 333 of the CRB1 protein (p.Gly333Arg). This variant is present in population databases (rs778232235, gnomAD 0.006%). This missense change has been observed in individuals with inherited retinal dystrophy (PMID: 21602930; Invitae). ClinVar contains an entry for this variant (Variation ID: 1301835). Advanced modeling of protein sequence and biophysical properties (such as structural, functional, and spatial information, amino acid conservation, physicochemical variation, residue mobility, and thermodynamic stability) performed at Invitae indicates that this missense variant is expected to disrupt CRB1 protein function with a positive predictive value of 95%. This variant disrupts the p.Gly333 amino acid residue in CRB1. Other variant(s) that disrupt this residue have been observed in individuals with CRB1-related conditions (PMID: 18682808, 25412400), which suggests that this may be a clinically significant amino acid residue. For these reasons, this variant has been classified as Pathogenic.

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

Last Updated: Sep 29, 2024