NM_000384.3(APOB):c.3400A>G (p.Arg1134Gly) AND multiple conditions

Germline classification:: Uncertain significance (1 submission)
Last evaluated:: Nov 15, 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:: RCV003770105.2

Allele description [Variation Report for NM_000384.3(APOB):c.3400A>G (p.Arg1134Gly)]

NM_000384.3(APOB):c.3400A>G (p.Arg1134Gly)

Gene:

APOB:apolipoprotein B [Gene - OMIM - HGNC]

Variant type:

single nucleotide variant

Cytogenetic location:

2p24.1

Genomic location:

Preferred name:

NM_000384.3(APOB):c.3400A>G (p.Arg1134Gly)

HGVS:

NC_000002.12:g.21015478T>C
NG_011793.1:g.33596A>G
NM_000384.3:c.3400A>GMANE SELECT
NP_000375.3:p.Arg1134Gly
NC_000002.11:g.21238350T>C
NC_000002.11:g.21238350T>C
NM_000384.2:c.3400A>G

Protein change:

R1134G

Links:

dbSNP: rs769299791

NCBI 1000 Genomes Browser:

rs769299791

Molecular consequence:

NM_000384.3:c.3400A>G - missense variant - [Sequence Ontology: SO:0001583]

Condition(s)

Name:: Hypercholesterolemia, autosomal dominant, type B (FHCL2)
Synonyms:: APOLIPOPROTEIN B-100, FAMILIAL DEFECTIVE; APOLIPOPROTEIN B-100, FAMILIAL LIGAND-DEFECTIVE; HYPERCHOLESTEROLEMIA, FAMILIAL, DUE TO LIGAND-DEFECTIVE APOLIPOPROTEIN B; See all synonyms [MedGen]
Identifiers:: MONDO: MONDO:0007751; MedGen: C1704417; OMIM: 144010

Name:: Familial hypobetalipoproteinemia 1
Synonyms:: Hypobetalipoproteinemia, normotriglyceridemic; Acanthocytosis with hypobetalipoproteinemia
Identifiers:: MONDO: MONDO:0014252; MedGen: C4551990; OMIM: 615558

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Submission Accession	Submitter	Review Status (Assertion method)	Clinical Significance (Last evaluated)	Origin	Method	Citations
SCV004575536	Labcorp Genetics (formerly Invitae), Labcorp	criteria provided, single submitter (Invitae Variant Classification Sherloc (09022015))	Uncertain significance (Nov 15, 2023)	germline	clinical testing	PubMed (2) [See all records that cite these PMIDs] 34445196, 28492532

Submission Accession

Submitter

Review Status
(Assertion method)

Clinical Significance
(Last evaluated)

Origin

Method

Citations

SCV004575536

Labcorp Genetics (formerly Invitae), Labcorp

criteria provided, single submitter

(Invitae Variant Classification Sherloc (09022015))

Uncertain significance
(Nov 15, 2023)

germline

clinical testing

PubMed (2)
[See all records that cite these PMIDs]

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

NGS in Hereditary Ataxia: When Rare Becomes Frequent.

Galatolo D, De Michele G, Silvestri G, Leuzzi V, Casali C, Musumeci O, Antenora A, Astrea G, Barghigiani M, Battini R, Battisti C, Caputi C, Cioffi E, De Michele G, Dotti MT, Fico T, Fiorillo C, Galosi S, Lieto M, Malandrini A, Melone MAB, Mignarri A, et al.

Int J Mol Sci. 2021 Aug 6;22(16). doi:pii: 8490. 10.3390/ijms22168490.

PubMed [citation]

PMID:: 34445196
PMCID:: PMC8395181

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, SCV004575536.1

#	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 arginine, which is basic and polar, with glycine, which is neutral and non-polar, at codon 1134 of the APOB protein (p.Arg1134Gly). This variant is present in population databases (rs769299791, gnomAD 0.002%). This missense change has been observed in individual(s) with spastic ataxia (PMID: 34445196). ClinVar contains an entry for this variant (Variation ID: 925766). 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 not expected to disrupt APOB protein function with a negative predictive value of 95%. 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

Last Updated: Nov 10, 2024

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