VCV000304736.14 - ClinVar

NM_018389.5(SLC35C1):c.29G>A (p.Arg10Lys)

Germline

Classification

criteria provided, conflicting classifications. Learn more about how ClinVar calculates review status.

Conflicting classifications of pathogenicity
Uncertain significance (6); Likely benign (1)

7 out of 7 submissions contributed to this classification

The aggregate germline classification for this variant, typically for a monogenic or Mendelian disorder as in the ACMG/AMP guidelines, or for response to a drug. This value is calculated by NCBI based on data from submitters. Read our rules for calculating the aggregate classification.

Somatic

No data submitted for somatic clinical impact

Somatic

No data submitted for oncogenicity

Variant Details

Identifiers

NM_018389.5(SLC35C1):c.29G>A (p.Arg10Lys)

Variation ID: 304736 Accession: VCV000304736.14

Type and length

single nucleotide variant, 1 bp

Location

Cytogenetic: 11p11.2 11: 45805830 (GRCh38) [ NCBI UCSC ] 11: 45827381 (GRCh37) [ NCBI UCSC ]

Timeline in ClinVar

	First in ClinVar Help The date this variant first appeared in ClinVar with each type of classification.	Last submission Help The date of the most recent submission for each type of classification for this variant.	Last evaluated Help The most recent date that a submitter evaluated this variant for each type of classification.
Germline	Dec 6, 2016	Oct 8, 2024	Sep 20, 2024

HGVS

Nucleotide	Protein	Molecular consequence
NM_018389.5:c.29G>A MANE Select Help Transcripts from the Matched Annotation from the NCBI and EMBL-EBI (MANE) collaboration.	NP_060859.4:p.Arg10Lys	missense
NM_001145265.2:c.-11G>A		5 prime UTR
NM_001145266.2:c.-11G>A
NC_000011.10:g.45805830G>A
NC_000011.9:g.45827381G>A
NG_009875.1:g.6759G>A
LRG_107:g.6759G>A
LRG_107t1:c.29G>A	LRG_107p1:p.Arg10Lys

... more HGVS ... less HGVS

Protein change

R10K

Other names

Canonical SPDI

NC_000011.10:45805829:G:A

Global minor allele frequency (GMAF) Help The global minor allele frequency calculated by the 1000 Genomes Project. The minor allele at this location is indicated in parentheses and may be different from the allele represented by this VCV record.

Allele frequency Help The frequency of the allele represented by this VCV record.

The Genome Aggregation Database (gnomAD) 0.00004

The Genome Aggregation Database (gnomAD), exomes 0.00005

Trans-Omics for Precision Medicine (TOPMed) 0.00006

Exome Aggregation Consortium (ExAC) 0.00007

The Genome Aggregation Database (gnomAD), exomes 0.00007

Links

ClinGen: CA5958169 dbSNP: rs567155861 VarSome

Genes

Gene	OMIM	ClinGen Gene Dosage Sensitivity Curation		Variation Viewer Help Links to Variation Viewer, a genome browser to view variation data from NCBI databases.	Related variants
Gene	OMIM	HI score Help The haploinsufficiency score for the gene, curated by ClinGen’s Dosage Sensitivity Curation task team.	TS score Help The triplosensitivity score for the gene, curated by ClinGen’s Dosage Sensitivity Curation task team.		Within gene Help The number of variants in ClinVar that are contained within this gene, with a link to view the list of variants.	All Help The number of variants in ClinVar for this gene, including smaller variants within the gene and larger CNVs that overlap or fully contain the gene.
SLC35C1		Gene associated with autosomal recessive phenotype	No evidence available	GRCh38 GRCh37	341	369

Conditions - Germline

Condition Help The condition for this variant-condition (RCV) record in ClinVar.	Classification Help The aggregate germline classification for this variant-condition (RCV) record in ClinVar. The number of submissions that contribute to this aggregate classification is shown in parentheses. (# of submissions)	Review status Help The aggregate review status for this variant-condition (RCV) record in ClinVar. This value is calculated by NCBI based on data from submitters. Read our rules for calculating the review status.	Last evaluated Help The most recent date that a submitter evaluated this variant for the condition.	Variation/condition record Help The RCV accession number, with most recent version number, for the variant-condition record, with a link to the RCV web page.
Leukocyte adhesion deficiency type II	Conflicting classifications of pathogenicity (5)	criteria provided, conflicting classifications	Sep 20, 2024	RCV000279679.16
not provided	Uncertain significance (1)	criteria provided, single submitter	May 29, 2018	RCV000658193.1
Inborn genetic diseases	Uncertain significance (1)	criteria provided, single submitter	May 20, 2022	RCV002520720.2

Submissions - Germline

Classification Help The submitted germline classification for each SCV record. (Last evaluated)	Review status Help Stars represent the review status, or the level of review supporting the submitted (SCV) record. This value is calculated by NCBI based on data from the submitter. Read our rules for calculating the review status. This column also includes a link to the submitter’s assertion criteria if provided, and the collection method. (Assertion criteria)	Condition Help The condition for the classification, provided by the submitter for this submitted (SCV) record. This column also includes the affected status and allele origin of individuals observed with this variant.	Submitter Help The submitting organization for this submitted (SCV) record. This column also includes the SCV accession and version number, the date this SCV first appeared in ClinVar, and the date that this SCV was last updated in ClinVar.	Expand all rows Collapse all rows Help This column includes more information supporting the classification, including citations, the comment on classification, and detailed evidence provided as observations of the variant by the submitter.
Uncertain significance (May 29, 2018) C Contributing to aggregate classification	criteria provided, single submitter (GeneDx Variant Classification (06012015))	not provided	GeneDx Accession: SCV000779964.2 First in ClinVar: Jul 09, 2018 Last updated: Jul 09, 2018	Comment: show The R10K variant has not been published as a pathogenic variant, nor has it been reported as a benign variant to our knowledge. The R10K variant is observed in 4/34,418 (0.01%) alleles from individuals of Latino background, in the ExAC dataset (Lek et al., 2016). The R10K variant is a conservative amino acid substitution, which is not likely to impact secondary protein structure as these residues share similar properties. In-silico analyses, including protein predictors and evolutionary conservation, support that this variant does not alter protein structure/function. In summary, based on the currently available information, it is unclear whether this variant is a pathogenic variant or a rare benign variant. (less) Observation: 1 Collection method: clinical testing Allele origin: germline Affected status: yes Observation 1 Collection method: clinical testing Allele origin: germline Affected status: yes

Uncertain significance (Jan 13, 2018) C Contributing to aggregate classification	criteria provided, single submitter (ICSL Variant Classification Criteria 13 December 2019)	Leukocyte adhesion deficiency type II	Illumina Laboratory Services, Illumina Accession: SCV000372002.3 First in ClinVar: Dec 06, 2016 Last updated: May 31, 2020	Comment: show This variant was observed in the ICSL laboratory as part of a predisposition screen in an ostensibly healthy population. It had not been previously curated by ICSL or reported in the Human Gene Mutation Database (HGMD: prior to June 1st, 2018), and was therefore a candidate for classification through an automated scoring system. Utilizing variant allele frequency, disease prevalence and penetrance estimates, and inheritance mode, an automated score was calculated to assess if this variant is too frequent to cause the disease. Based on the score, this variant could not be ruled out of causing disease and therefore its association with disease required further investigation. A literature search was performed for the gene, cDNA change, and amino acid change (if applicable). No publications were found based on this search. This variant was therefore classified as a variant of unknown significance for this disease. (less) Observation: 1 Collection method: clinical testing Allele origin: germline Affected status: unknown Observation 1 Collection method: clinical testing Allele origin: germline Affected status: unknown

Uncertain significance (Mar 05, 2020) C Contributing to aggregate classification	criteria provided, single submitter (ACMG Guidelines, 2015)	Leukocyte adhesion deficiency type II	Baylor Genetics Accession: SCV001520383.1 First in ClinVar: Mar 22, 2021 Last updated: Mar 22, 2021	Comment: show This variant was determined to be of uncertain significance according to ACMG Guidelines, 2015 [PMID:25741868]. (less) Observation: 1 Collection method: clinical testing Allele origin: unknown Affected status: yes Observation 1 Collection method: clinical testing Allele origin: unknown Affected status: yes

Uncertain significance (Oct 25, 2022) C Contributing to aggregate classification	criteria provided, single submitter (Invitae Variant Classification Sherloc (09022015))	Leukocyte adhesion deficiency type II	Labcorp Genetics (formerly Invitae), Labcorp Accession: SCV001376009.4 First in ClinVar: Jul 16, 2020 Last updated: Feb 07, 2023	Comment: show This sequence change replaces arginine, which is basic and polar, with lysine, which is basic and polar, at codon 10 of the SLC35C1 protein (p.Arg10Lys). This variant is present in population databases (rs567155861, gnomAD 0.01%). This variant has not been reported in the literature in individuals affected with SLC35C1-related conditions. ClinVar contains an entry for this variant (Variation ID: 304736). 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. (less) Observation: 1 Collection method: clinical testing Allele origin: germline Affected status: unknown Observation 1 Collection method: clinical testing Allele origin: germline Affected status: unknown

Uncertain significance (Sep 03, 2021) C Contributing to aggregate classification	criteria provided, single submitter (ACMG Guidelines, 2015)	Leukocyte adhesion deficiency type II	Fulgent Genetics, Fulgent Genetics Accession: SCV002812915.1 First in ClinVar: Dec 31, 2022 Last updated: Dec 31, 2022	Observation: 1 Collection method: clinical testing Allele origin: unknown Affected status: unknown Observation 1 Collection method: clinical testing Allele origin: unknown Affected status: unknown

Uncertain significance (May 20, 2022) C Contributing to aggregate classification	criteria provided, single submitter (Ambry Variant Classification Scheme 2023)	Inborn genetic diseases	Ambry Genetics Accession: SCV003706477.2 First in ClinVar: Feb 07, 2023 Last updated: May 01, 2024	Comment: show The c.29G>A (p.R10K) alteration is located in exon 1 (coding exon 1) of the SLC35C1 gene. This alteration results from a G to A substitution at nucleotide position 29, causing the arginine (R) at amino acid position 10 to be replaced by a lysine (K). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. (less) Observation: 1 Collection method: clinical testing Allele origin: germline Affected status: unknown Observation 1 Collection method: clinical testing Allele origin: germline Affected status: unknown

Likely benign (Sep 20, 2024) C Contributing to aggregate classification	criteria provided, single submitter (ACMG Guidelines, 2015)	Leukocyte adhesion deficiency type II	3billion Accession: SCV005328595.1 First in ClinVar: Oct 08, 2024 Last updated: Oct 08, 2024	Comment: show The homozygous variant was found in patients diagnosed with another variant in a different gene, with no symptoms related to the gene containing the homozygous variant. (less) Observation: 1 Collection method: clinical testing Allele origin: germline Affected status: no Observation 1 Collection method: clinical testing Allele origin: germline Affected status: no

Comment:

The R10K variant has not been published as a pathogenic variant, nor has it been reported as a benign variant to our knowledge. The R10K variant is observed in 4/34,418 (0.01%) alleles from individuals of Latino background, in the ExAC dataset (Lek et al., 2016). The R10K variant is a conservative amino acid substitution, which is not likely to impact secondary protein structure as these residues share similar properties. In-silico analyses, including protein predictors and evolutionary conservation, support that this variant does not alter protein structure/function. In summary, based on the currently available information, it is unclear whether this variant is a pathogenic variant or a rare benign variant.

Comment:

This variant was observed in the ICSL laboratory as part of a predisposition screen in an ostensibly healthy population. It had not been previously curated by ICSL or reported in the Human Gene Mutation Database (HGMD: prior to June 1st, 2018), and was therefore a candidate for classification through an automated scoring system. Utilizing variant allele frequency, disease prevalence and penetrance estimates, and inheritance mode, an automated score was calculated to assess if this variant is too frequent to cause the disease. Based on the score, this variant could not be ruled out of causing disease and therefore its association with disease required further investigation. A literature search was performed for the gene, cDNA change, and amino acid change (if applicable). No publications were found based on this search. This variant was therefore classified as a variant of unknown significance for this disease.

Comment:

This sequence change replaces arginine, which is basic and polar, with lysine, which is basic and polar, at codon 10 of the SLC35C1 protein (p.Arg10Lys). This variant is present in population databases (rs567155861, gnomAD 0.01%). This variant has not been reported in the literature in individuals affected with SLC35C1-related conditions. ClinVar contains an entry for this variant (Variation ID: 304736). 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.

Comment:

The c.29G>A (p.R10K) alteration is located in exon 1 (coding exon 1) of the SLC35C1 gene. This alteration results from a G to A substitution at nucleotide position 29, causing the arginine (R) at amino acid position 10 to be replaced by a lysine (K). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear.

Citations for germline classification of this variant

There are no citations for germline classification of this variant in ClinVar. If you know of citations for this variation, please consider submitting that information to ClinVar.

Text-mined citations for rs567155861 ...

These citations are identified by LitVar using the rs number, so they may include citations for more than one variant at this location. Please review the LitVar results carefully for your variant of interest.

Record last updated Apr 13, 2026