NM_000071.3(CBS):c.52C>A (p.Arg18Ser) AND HYPERHOMOCYSTEINEMIA, THROMBOTIC, CBS-RELATED

Germline classification:: Uncertain significance (1 submission)
Last evaluated:: Aug 28, 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:: RCV002241272.13

Allele description [Variation Report for NM_000071.3(CBS):c.52C>A (p.Arg18Ser)]

NM_000071.3(CBS):c.52C>A (p.Arg18Ser)

Gene:

CBS:cystathionine beta-synthase [Gene - OMIM - HGNC]

Variant type:

single nucleotide variant

Cytogenetic location:

21q22.3

Genomic location:

Preferred name:

NM_000071.3(CBS):c.52C>A (p.Arg18Ser)

HGVS:

NC_000021.9:g.43072142G>T
NG_008938.1:g.8789C>A
NM_000071.3:c.52C>AMANE SELECT
NM_001178008.3:c.52C>A
NM_001178009.3:c.52C>A
NM_001320298.2:c.52C>A
NP_000062.1:p.Arg18Ser
NP_001171479.1:p.Arg18Ser
NP_001171480.1:p.Arg18Ser
NP_001307227.1:p.Arg18Ser
LRG_777t1:c.52C>A
LRG_777:g.8789C>A
NC_000021.8:g.44492252G>T
NM_000071.2:c.52C>A

Protein change:

R18S

Links:

dbSNP: rs201827340

NCBI 1000 Genomes Browser:

rs201827340

Molecular consequence:

NM_000071.3:c.52C>A - missense variant - [Sequence Ontology: SO:0001583]
NM_001178008.3:c.52C>A - missense variant - [Sequence Ontology: SO:0001583]
NM_001178009.3:c.52C>A - missense variant - [Sequence Ontology: SO:0001583]
NM_001320298.2:c.52C>A - missense variant - [Sequence Ontology: SO:0001583]

Condition(s)

Name:: HYPERHOMOCYSTEINEMIA, THROMBOTIC, CBS-RELATED
Identifiers:: MedGen: C3150344

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Submission Accession	Submitter	Review Status (Assertion method)	Clinical Significance (Last evaluated)	Origin	Method	Citations
SCV001390719	Labcorp Genetics (formerly Invitae), Labcorp	criteria provided, single submitter (Invitae Variant Classification Sherloc (09022015))	Uncertain significance (Aug 28, 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

SCV001390719

Labcorp Genetics (formerly Invitae), Labcorp

criteria provided, single submitter

(Invitae Variant Classification Sherloc (09022015))

Uncertain significance
(Aug 28, 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, SCV001390719.4

#	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 arginine with serine at codon 18 of the CBS protein (p.Arg18Ser). The arginine residue is weakly conserved and there is a moderate physicochemical difference between arginine and serine. This variant is not present in population databases (ExAC no frequency). This variant has not been reported in the literature in individuals affected with CBS-related conditions. Algorithms developed to predict the effect of missense changes on protein structure and function (SIFT, PolyPhen-2, Align-GVGD) all suggest that this variant is likely to be tolerated. Algorithms developed to predict the effect of sequence changes on RNA splicing suggest that this variant may create or strengthen a splice site. 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 3, 2024

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