NM_003060.4(SLC22A5):c.197C>T (p.Thr66Ile) AND Renal carnitine transport defect

Germline classification:: Conflicting classifications of pathogenicity (2 submissions)
Last evaluated:: Oct 3, 2022
Review status:: criteria provided, conflicting classifications

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:: RCV001944506.9

Allele description [Variation Report for NM_003060.4(SLC22A5):c.197C>T (p.Thr66Ile)]

NM_003060.4(SLC22A5):c.197C>T (p.Thr66Ile)

Gene:

SLC22A5:solute carrier family 22 member 5 [Gene - OMIM - HGNC]

Variant type:

single nucleotide variant

Cytogenetic location:

5q31.1

Genomic location:

Preferred name:

NM_003060.4(SLC22A5):c.197C>T (p.Thr66Ile)

Other names:

p.Thr66Ile

HGVS:

NC_000005.10:g.132370169C>T
NG_008982.2:g.5466C>T
NM_001308122.2:c.197C>T
NM_003060.4:c.197C>TMANE SELECT
NP_001295051.1:p.Thr66Ile
NP_003051.1:p.Thr66Ile
NC_000005.9:g.131705861C>T

Protein change:

T66I

Links:

dbSNP: rs1169005119

NCBI 1000 Genomes Browser:

rs1169005119

Molecular consequence:

NM_001308122.2:c.197C>T - missense variant - [Sequence Ontology: SO:0001583]
NM_003060.4:c.197C>T - missense variant - [Sequence Ontology: SO:0001583]

Condition(s)

Name:: Renal carnitine transport defect (CDSP)
Synonyms:: CARNITINE DEFICIENCY, SYSTEMIC, DUE TO DEFECT IN RENAL REABSORPTION OF CARNITINE; CARNITINE TRANSPORTER, PLASMA-MEMBRANE, DEFICIENCY OF; CARNITINE UPTAKE DEFECT; See all synonyms [MedGen]
Identifiers:: MONDO: MONDO:0008919; MedGen: C0342788; Orphanet: 158; OMIM: 212140

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Submission Accession	Submitter	Review Status (Assertion method)	Clinical Significance (Last evaluated)	Origin	Method	Citations
SCV002128981	Labcorp Genetics (formerly Invitae), Labcorp	criteria provided, single submitter (Invitae Variant Classification Sherloc (09022015))	Uncertain significance (Mar 19, 2022)	germline	clinical testing	PubMed (1) [See all records that cite this PMID]
SCV002576686	Giacomini Lab, University of California, San Francisco	criteria provided, single submitter (ACMG Guidelines, 2015)	Likely benign (Oct 3, 2022)	germline, not applicable	research, in vitro	PubMed (1) [See all records that cite this PMID]

Submission Accession

Submitter

Review Status
(Assertion method)

Clinical Significance
(Last evaluated)

Origin

Method

Citations

SCV002128981

Labcorp Genetics (formerly Invitae), Labcorp

criteria provided, single submitter

(Invitae Variant Classification Sherloc (09022015))

Uncertain significance
(Mar 19, 2022)

germline

clinical testing

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

SCV002576686

Giacomini Lab, University of California, San Francisco

criteria provided, single submitter

(ACMG Guidelines, 2015)

Likely benign
(Oct 3, 2022)

germline, not applicable

research, in vitro

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	not applicable	not applicable	not provided	not provided	not provided	not provided	not provided	in vitro
not provided	germline	unknown	not provided	not provided	not provided	not provided	not provided	clinical testing, research

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

Standards and guidelines for the interpretation of sequence variants: a joint consensus recommendation of the American College of Medical Genetics and Genomics and the Association for Molecular Pathology.

Richards S, Aziz N, Bale S, Bick D, Das S, Gastier-Foster J, Grody WW, Hegde M, Lyon E, Spector E, Voelkerding K, Rehm HL; ACMG Laboratory Quality Assurance Committee.

Genet Med. 2015 May;17(5):405-24. doi: 10.1038/gim.2015.30. Epub 2015 Mar 5.

PubMed [citation]

PMID:: 25741868
PMCID:: PMC4544753

Details of each submission

From Labcorp Genetics (formerly Invitae), Labcorp, SCV002128981.2

#	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 threonine, which is neutral and polar, with isoleucine, which is neutral and non-polar, at codon 66 of the SLC22A5 protein (p.Thr66Ile). This variant is present in population databases (no rsID available, gnomAD 0.003%). This variant has not been reported in the literature in individuals affected with SLC22A5-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. 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

From Giacomini Lab, University of California, San Francisco, SCV002576686.1

#	Ethnicity	Individuals	Chromosomes Tested	Family History	Method	Citations
1	not provided	not provided	not provided	not provided	research	PubMed (1)
2	not provided	not provided	not provided	not provided	in vitro	PubMed (1)

#	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
2	not applicable	not applicable	not provided	not provided	assert pathogenicity		not provided	not provided	not provided	not provided

Last Updated: May 16, 2025

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