NM_201253.3(CRB1):c.2927T>C (p.Ile976Thr) AND multiple conditions

Germline classification:: Likely pathogenic (1 submission)
Last evaluated:: Nov 8, 2021
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:: RCV001359699.5

Allele description [Variation Report for NM_201253.3(CRB1):c.2927T>C (p.Ile976Thr)]

NM_201253.3(CRB1):c.2927T>C (p.Ile976Thr)

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.2927T>C (p.Ile976Thr)

HGVS:

NC_000001.11:g.197434790T>C
NG_008483.2:g.238329T>C
NM_001193640.2:c.2591T>C
NM_001257965.2:c.2855T>C
NM_001257966.2:c.2129-810T>C
NM_201253.3:c.2927T>CMANE SELECT
NP_001180569.1:p.Ile864Thr
NP_001244894.1:p.Ile952Thr
NP_957705.1:p.Ile976Thr
NC_000001.10:g.197403920T>C
NR_047563.2:n.2880T>C
NR_047564.2:n.3088T>C

Protein change:

I864T

Links:

dbSNP: rs2125498956

NCBI 1000 Genomes Browser:

rs2125498956

Molecular consequence:

NM_001257966.2:c.2129-810T>C - intron variant - [Sequence Ontology: SO:0001627]
NM_001193640.2:c.2591T>C - missense variant - [Sequence Ontology: SO:0001583]
NM_001257965.2:c.2855T>C - missense variant - [Sequence Ontology: SO:0001583]
NM_201253.3:c.2927T>C - missense variant - [Sequence Ontology: SO:0001583]
NR_047563.2:n.2880T>C - non-coding transcript variant - [Sequence Ontology: SO:0001619]
NR_047564.2:n.3088T>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

Recent activity

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histone 3, partial [Xyleus modestus]
histone 3, partial [Xyleus modestus]
gi|1235799912|gb|ASU91887.1|

Protein

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Submission Accession	Submitter	Review Status (Assertion method)	Clinical Significance (Last evaluated)	Origin	Method	Citations
SCV001555577	Labcorp Genetics (formerly Invitae), Labcorp	criteria provided, single submitter (Invitae Variant Classification Sherloc (09022015))	Likely pathogenic (Nov 8, 2021)	germline	clinical testing	PubMed (1) [See all records that cite this PMID]

Submission Accession

Submitter

Review Status
(Assertion method)

Clinical Significance
(Last evaluated)

Origin

Method

Citations

SCV001555577

Labcorp Genetics (formerly Invitae), Labcorp

criteria provided, single submitter

(Invitae Variant Classification Sherloc (09022015))

Likely pathogenic
(Nov 8, 2021)

germline

clinical testing

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

Help

Summary from all submissions

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

Citations

PubMed

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

Details of each submission

From Labcorp Genetics (formerly Invitae), Labcorp, SCV001555577.4

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

Description

This sequence change replaces isoleucine, which is neutral and non-polar, with threonine, which is neutral and polar, at codon 976 of the CRB1 protein (p.Ile976Thr). This variant is not present in population databases (gnomAD no frequency). This missense change has been observed in individual(s) with retinoschisis (Invitae). In at least one individual the data is consistent with the variant being in trans (on the opposite chromosome) from a pathogenic variant. ClinVar contains an entry for this variant (Variation ID: 1051633). 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. In summary, the currently available evidence indicates that the variant is pathogenic, but additional data are needed to prove that conclusively. Therefore, this variant has been classified as Likely Pathogenic.

#	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

Last Updated: Sep 29, 2024

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