NM_018389.5(SLC35C1):c.29G>A (p.Arg10Lys) AND Leukocyte adhesion deficiency type II

Germline classification:: Conflicting interpretations of pathogenicity (5 submissions)
Last evaluated:: Sep 20, 2024
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:: RCV000279679.13

Allele description [Variation Report for NM_018389.5(SLC35C1):c.29G>A (p.Arg10Lys)]

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

Gene:

SLC35C1:solute carrier family 35 member C1 [Gene - OMIM - HGNC]

Variant type:

single nucleotide variant

Cytogenetic location:

11p11.2

Genomic location:

Preferred name:

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

HGVS:

NC_000011.10:g.45805830G>A
NG_009875.1:g.6759G>A
NM_001145265.2:c.-11G>A
NM_001145266.2:c.-11G>A
NM_018389.5:c.29G>AMANE SELECT
NP_060859.4:p.Arg10Lys
NP_060859.4:p.Arg10Lys
LRG_107t1:c.29G>A
LRG_107:g.6759G>A
LRG_107p1:p.Arg10Lys
NC_000011.9:g.45827381G>A
NM_001145266.1:c.-11G>A
NM_018389.4:c.29G>A

Protein change:

R10K

Links:

dbSNP: rs567155861

NCBI 1000 Genomes Browser:

rs567155861

Molecular consequence:

NM_001145265.2:c.-11G>A - 5 prime UTR variant - [Sequence Ontology: SO:0001623]
NM_018389.5:c.29G>A - missense variant - [Sequence Ontology: SO:0001583]

Condition(s)

Name:: Leukocyte adhesion deficiency type II
Synonyms:: CONGENITAL DISORDER OF GLYCOSYLATION, TYPE IIc; CDG IIc; Congenital disorder of glycosylation type 2C; See all synonyms [MedGen]
Identifiers:: MONDO: MONDO:0009953; MedGen: C0398739; Orphanet: 2968; Orphanet: 99843; OMIM: 266265

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Submission Accession	Submitter	Review Status (Assertion method)	Clinical Significance (Last evaluated)	Origin	Method	Citations
SCV000372002	Illumina Laboratory Services, Illumina	criteria provided, single submitter (ICSL Variant Classification Criteria 13 December 2019)	Uncertain significance (Jan 13, 2018)	germline	clinical testing	Citation Link,
SCV001376009	Labcorp Genetics (formerly Invitae), Labcorp	criteria provided, single submitter (Invitae Variant Classification Sherloc (09022015))	Uncertain significance (Oct 25, 2022)	germline	clinical testing	PubMed (1) [See all records that cite this PMID]
SCV001520383	Baylor Genetics	criteria provided, single submitter (ACMG Guidelines, 2015)	Uncertain significance (Mar 5, 2020)	unknown	clinical testing	PubMed (1) [See all records that cite this PMID]
SCV002812915	Fulgent Genetics, Fulgent Genetics	criteria provided, single submitter (ACMG Guidelines, 2015)	Uncertain significance (Sep 3, 2021)	unknown	clinical testing	PubMed (1) [See all records that cite this PMID]
SCV005328595	3billion	criteria provided, single submitter (ACMG Guidelines, 2015)	Likely benign (Sep 20, 2024)	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	unknown	unknown	not provided	not provided	not provided	not provided	not provided	clinical testing
not provided	germline	no	not provided	not provided	not provided	not provided	not provided	clinical testing
not provided	unknown	yes	not provided	not provided	not provided	not provided	not provided	clinical testing
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

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 Illumina Laboratory Services, Illumina, SCV000372002.3

#	Ethnicity	Individuals	Chromosomes Tested	Family History	Method	Citations
1	not provided	not provided	not provided	not provided	clinical testing	not provided

Description

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.

#	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 Labcorp Genetics (formerly Invitae), Labcorp, SCV001376009.4

#	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, 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.

#	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 Baylor Genetics, SCV001520383.1

#	Ethnicity	Individuals	Chromosomes Tested	Family History	Method	Citations
1	not provided	not provided	not provided	not provided	clinical testing	PubMed (1)

Description

This variant was determined to be of uncertain significance according to ACMG Guidelines, 2015 [PMID:25741868].

#	Sample				Method		Observation
#	Origin	Affected	Number tested	Tissue	Purpose	Method	Individuals	Allele frequency	Families	Co-occurrences
1	unknown	yes	not provided	not provided	not provided		not provided	not provided	not provided	not provided

From Fulgent Genetics, Fulgent Genetics, SCV002812915.1

#	Ethnicity	Individuals	Chromosomes Tested	Family History	Method	Citations
1	not provided	not provided	not provided	not provided	clinical testing	PubMed (1)

#	Sample				Method		Observation
#	Origin	Affected	Number tested	Tissue	Purpose	Method	Individuals	Allele frequency	Families	Co-occurrences
1	unknown	unknown	not provided	not provided	not provided		not provided	not provided	not provided	not provided

From 3billion, SCV005328595.1

#	Ethnicity	Individuals	Chromosomes Tested	Family History	Method	Citations
1	not provided	not provided	not provided	not provided	clinical testing	PubMed (1)

Description

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.

#	Sample				Method		Observation
#	Origin	Affected	Number tested	Tissue	Purpose	Method	Individuals	Allele frequency	Families	Co-occurrences
1	germline	no	not provided	not provided	not provided		not provided	not provided	not provided	not provided

Last Updated: Oct 8, 2024

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