NM_005629.4(SLC6A8):c.1310A>G (p.Tyr437Cys) AND Creatine transporter deficiency

Germline classification:: Uncertain significance (1 submission)
Last evaluated:: Aug 16, 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:: RCV003624473.2

Allele description [Variation Report for NM_005629.4(SLC6A8):c.1310A>G (p.Tyr437Cys)]

NM_005629.4(SLC6A8):c.1310A>G (p.Tyr437Cys)

Gene:

SLC6A8:solute carrier family 6 member 8 [Gene - OMIM - HGNC]

Variant type:

single nucleotide variant

Cytogenetic location:

Xq28

Genomic location:

Preferred name:

NM_005629.4(SLC6A8):c.1310A>G (p.Tyr437Cys)

HGVS:

NC_000023.11:g.153694185A>G
NG_012016.2:g.10889A>G
NM_001142805.2:c.1280A>G
NM_001142806.1:c.965A>G
NM_005629.4:c.1310A>GMANE SELECT
NP_001136277.1:p.Tyr427Cys
NP_001136278.1:p.Tyr322Cys
NP_005620.1:p.Tyr437Cys
NC_000023.10:g.152959640A>G
NM_005629.3:c.1310A>G

Protein change:

Y322C

Links:

dbSNP: rs1557045400

NCBI 1000 Genomes Browser:

rs1557045400

Molecular consequence:

NM_001142805.2:c.1280A>G - missense variant - [Sequence Ontology: SO:0001583]
NM_001142806.1:c.965A>G - missense variant - [Sequence Ontology: SO:0001583]
NM_005629.4:c.1310A>G - missense variant - [Sequence Ontology: SO:0001583]

Condition(s)

Name:: Creatine transporter deficiency (CCDS1)
Synonyms:: Creatine deficiency, X-linked; Mental retardation , X-linked with seizures, short stature and midface hypoplasia; Mental retardation , X-linked, with creatine transport deficiency; See all synonyms [MedGen]
Identifiers:: MONDO: MONDO:0010305; MedGen: C1845862; Orphanet: 52503; OMIM: 300352

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Submission Accession	Submitter	Review Status (Assertion method)	Clinical Significance (Last evaluated)	Origin	Method	Citations
SCV004520855	Labcorp Genetics (formerly Invitae), Labcorp	criteria provided, single submitter (Invitae Variant Classification Sherloc (09022015))	Uncertain significance (Aug 16, 2023)	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

SCV004520855

Labcorp Genetics (formerly Invitae), Labcorp

criteria provided, single submitter

(Invitae Variant Classification Sherloc (09022015))

Uncertain significance
(Aug 16, 2023)

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, SCV004520855.1

#	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 tyrosine, which is neutral and polar, with cysteine, which is neutral and slightly polar, at codon 437 of the SLC6A8 protein (p.Tyr437Cys). This variant is present in population databases (no rsID available, gnomAD 0.008%). This variant has not been reported in the literature in individuals affected with SLC6A8-related conditions. ClinVar contains an entry for this variant (Variation ID: 1696872). 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 SLC6A8 protein function. 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: Sep 29, 2024

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