rs386134215

Variant summary

Our verdict is Pathogenic. Variant got 11 ACMG points: 11P and 0B. PM2PM4_SupportingPP5_Very_Strong

The NM_003060.4(SLC22A5):​c.1181_1183delTGC​(p.Leu394del) variant causes a disruptive inframe deletion change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000031 in 1,614,218 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Likely pathogenic (★★).

Frequency

Genomes: 𝑓 0.00018 ( 0 hom., cov: 33)
Exomes 𝑓: 0.000015 ( 0 hom. )

Consequence

SLC22A5
NM_003060.4 disruptive_inframe_deletion

Scores

Not classified

Clinical Significance

Pathogenic/Likely pathogenic criteria provided, multiple submitters, no conflicts P:7

Conservation

PhyloP100: 3.57
Variant links:
Genes affected
SLC22A5 (HGNC:10969): (solute carrier family 22 member 5) Polyspecific organic cation transporters in the liver, kidney, intestine, and other organs are critical for elimination of many endogenous small organic cations as well as a wide array of drugs and environmental toxins. The encoded protein is a plasma integral membrane protein which functions both as an organic cation transporter and as a sodium-dependent high affinity carnitine transporter. The encoded protein is involved in the active cellular uptake of carnitine. Mutations in this gene are the cause of systemic primary carnitine deficiency (CDSP), an autosomal recessive disorder manifested early in life by hypoketotic hypoglycemia and acute metabolic decompensation, and later in life by skeletal myopathy or cardiomyopathy. Alternative splicing of this gene results in multiple transcript variants. [provided by RefSeq, Apr 2015]

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ACMG classification

Classification made for transcript

Verdict is Pathogenic. Variant got 11 ACMG points.

PM2
Very rare variant in population databases, with high coverage;
PM4
Nonframeshift variant in NON repetitive region in NM_003060.4. Strenght limited to Supporting due to length of the change: 1aa.
PP5
Variant 5-132390809-GGCT-G is Pathogenic according to our data. Variant chr5-132390809-GGCT-G is described in ClinVar as [Likely_pathogenic]. Clinvar id is 25410.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect Exon rank MANE Protein UniProt
SLC22A5NM_003060.4 linkc.1181_1183delTGC p.Leu394del disruptive_inframe_deletion Exon 7 of 10 ENST00000245407.8 NP_003051.1 O76082-1

Ensembl

Gene Transcript HGVSc HGVSp Effect Exon rank TSL MANE Protein Appris UniProt
SLC22A5ENST00000245407.8 linkc.1181_1183delTGC p.Leu394del disruptive_inframe_deletion Exon 7 of 10 1 NM_003060.4 ENSP00000245407.3 O76082-1

Frequencies

GnomAD3 genomes
AF:
0.000184
AC:
28
AN:
152218
Hom.:
0
Cov.:
33
show subpopulations
Gnomad AFR
AF:
0.0000241
Gnomad AMI
AF:
0.00
Gnomad AMR
AF:
0.00170
Gnomad ASJ
AF:
0.00
Gnomad EAS
AF:
0.00
Gnomad SAS
AF:
0.00
Gnomad FIN
AF:
0.00
Gnomad MID
AF:
0.00
Gnomad NFE
AF:
0.00
Gnomad OTH
AF:
0.000478
GnomAD3 exomes
AF:
0.0000159
AC:
4
AN:
251484
Hom.:
0
AF XY:
0.0000147
AC XY:
2
AN XY:
135916
show subpopulations
Gnomad AFR exome
AF:
0.00
Gnomad AMR exome
AF:
0.0000578
Gnomad ASJ exome
AF:
0.00
Gnomad EAS exome
AF:
0.00
Gnomad SAS exome
AF:
0.00
Gnomad FIN exome
AF:
0.00
Gnomad NFE exome
AF:
0.00
Gnomad OTH exome
AF:
0.000326
GnomAD4 exome
AF:
0.0000150
AC:
22
AN:
1461882
Hom.:
0
AF XY:
0.00000963
AC XY:
7
AN XY:
727246
show subpopulations
Gnomad4 AFR exome
AF:
0.00
Gnomad4 AMR exome
AF:
0.000268
Gnomad4 ASJ exome
AF:
0.00
Gnomad4 EAS exome
AF:
0.00
Gnomad4 SAS exome
AF:
0.00
Gnomad4 FIN exome
AF:
0.00
Gnomad4 NFE exome
AF:
0.00
Gnomad4 OTH exome
AF:
0.000149
GnomAD4 genome
AF:
0.000184
AC:
28
AN:
152336
Hom.:
0
Cov.:
33
AF XY:
0.000174
AC XY:
13
AN XY:
74504
show subpopulations
Gnomad4 AFR
AF:
0.0000241
Gnomad4 AMR
AF:
0.00170
Gnomad4 ASJ
AF:
0.00
Gnomad4 EAS
AF:
0.00
Gnomad4 SAS
AF:
0.00
Gnomad4 FIN
AF:
0.00
Gnomad4 NFE
AF:
0.00
Gnomad4 OTH
AF:
0.000473
Alfa
AF:
0.000142
Hom.:
0
Bravo
AF:
0.000514

ClinVar

Significance: Pathogenic/Likely pathogenic
Submissions summary: Pathogenic:7
Revision: criteria provided, multiple submitters, no conflicts
LINK: link

Submissions by phenotype

Renal carnitine transport defect Pathogenic:6
Mar 12, 2024
Fulgent Genetics, Fulgent Genetics
Significance: Likely pathogenic
Review Status: criteria provided, single submitter
Collection Method: clinical testing

- -

Jan 29, 2025
Labcorp Genetics (formerly Invitae), Labcorp
Significance: Pathogenic
Review Status: criteria provided, single submitter
Collection Method: clinical testing

This variant, c.1181_1183del, results in the deletion of 1 amino acid(s) of the SLC22A5 protein (p.Leu394del), but otherwise preserves the integrity of the reading frame. This variant is present in population databases (rs762932965, gnomAD 0.009%). This variant has been observed in individual(s) with primary carnitine deficiency (PMID: 26828774, 28841266, 29895548; internal data). In at least one individual the data is consistent with being in trans (on the opposite chromosome) from a pathogenic variant. ClinVar contains an entry for this variant (Variation ID: 25410). Experimental studies and prediction algorithms are not available or were not evaluated, and the functional significance of this variant is currently unknown. For these reasons, this variant has been classified as Pathogenic. -

Feb 16, 2022
Women's Health and Genetics/Laboratory Corporation of America, LabCorp
Significance: Likely pathogenic
Review Status: criteria provided, single submitter
Collection Method: clinical testing

Variant summary: SLC22A5 c.1181_1183delTGC (p.Leu394del) results in an in-frame deletion that is predicted to remove one amino acid from the encoded protein. The variant allele was found at a frequency of 1.6e-05 in 251484 control chromosomes. c.1181_1183delTGC has been reported in the literature in individuals affected with Systemic Primary Carnitine Deficiency (Frigeni_2017, Echaniz-Laguna_2018). These data indicate that the variant may be associated with disease. At least one publication reports experimental evidence evaluating an impact on protein function. The most pronounced variant effect results in <10% of normal activity (Frigeni_2017). Three clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar after 2014 without evidence for independent evaluation. All laboratories classified the variant as pathogenic/likely pathogenic. Based on the evidence outlined above, the variant was classified as likely pathogenic. -

May 13, 2022
Revvity Omics, Revvity
Significance: Likely pathogenic
Review Status: criteria provided, single submitter
Collection Method: clinical testing

- -

Mar 19, 2024
Baylor Genetics
Significance: Likely pathogenic
Review Status: criteria provided, single submitter
Collection Method: clinical testing

- -

Jul 15, 2021
Genome-Nilou Lab
Significance: Likely pathogenic
Review Status: criteria provided, single submitter
Collection Method: clinical testing

- -

not provided Pathogenic:1
Jan 18, 2021
GeneDx
Significance: Pathogenic
Review Status: criteria provided, single submitter
Collection Method: clinical testing

Observed in the homozygous state in patients with primary carnitine deficiency referred for genetic testing at GeneDx and in the literature (PMID: 29895548); Published functional studies in CHO cells demonstrate a damaging effect on protein function (PMID: 28841266); In-frame deletion of 1 amino acid in a non-repeat region; Not observed at a significant frequency in large population cohorts (gnomAD); In silico analysis supports that this variant has a deleterious effect on protein structure/function; This variant is associated with the following publications: (PMID: 28841266, 26828774, 32778825, 29895548) -

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction

Splicing

Name
Calibrated prediction
Score
Prediction
SpliceAI score (max)
0.010
Details are displayed if max score is > 0.2

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

LitVar

Below is the list of publications found by LitVar. It may be empty.

Other links and lift over

dbSNP: rs386134215; hg19: chr5-131726501; API