2-44275695-TC-T

Variant names:

Variant summary

Our verdict is Pathogenic. Variant got 16 ACMG points: 16P and 0B. PVS1PP5_Very_Strong

The NM_000341.4(SLC3A1):c.163delC(p.Gln55ArgfsTer51) variant causes a frameshift change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000227 in 1,614,026 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Pathogenic (★★). Variant results in nonsense mediated mRNA decay.

Frequency

Genomes: 𝑓 0.00012 ( 0 hom., cov: 32)

Exomes 𝑓: 0.00024 ( 0 hom. )

Consequence

SLC3A1
NM_000341.4 frameshift

Scores

Not classified

Clinical Significance

Pathogenic criteria provided, multiple submitters, no conflicts P:4

Conservation

PhyloP100: 0.326

Variant links:

Genes affected

SLC3A1 (HGNC:11025): (solute carrier family 3 member 1) This gene encodes a type II membrane glycoprotein which is one of the components of the renal amino acid transporter which transports neutral and basic amino acids in the renal tubule and intestinal tract. Mutations and deletions in this gene are associated with cystinuria. Alternatively spliced transcript variants have been described, but their biological validity has not been determined. [provided by RefSeq, Jul 2008]

SLC3A1 links:

ENSG00000285542 (HGNC:):

ENSG00000285542 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Pathogenic. Variant got 16 ACMG points.

PVS1

Loss of function variant, product undergoes nonsense mediated mRNA decay. LoF is a known mechanism of disease.

PP5

Variant 2-44275695-TC-T is Pathogenic according to our data. Variant chr2-44275695-TC-T is described in ClinVar as [Pathogenic]. Clinvar id is 502014.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
SLC3A1	NM_000341.4 link	c.163delC	p.Gln55ArgfsTer51	frameshift_variant	Exon 1 of 10	ENST00000260649.11	NP_000332.2	Q07837-1A0A0S2Z4E1
SLC3A1	XM_011533047.4 link	c.163delC	p.Gln55ArgfsTer51	frameshift_variant	Exon 1 of 10		XP_011531349.1	B8ZZK1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	UniProt
SLC3A1	ENST00000260649.11 link	c.163delC	p.Gln55ArgfsTer51	frameshift_variant	Exon 1 of 10	1	NM_000341.4	ENSP00000260649.6	Q07837-1
ENSG00000285542	ENST00000649044.1 link	n.*174delC		non_coding_transcript_exon_variant	Exon 6 of 15			ENSP00000497083.1	A0A3B3IS24
ENSG00000285542	ENST00000649044.1 link	n.*174delC		3_prime_UTR_variant	Exon 6 of 15			ENSP00000497083.1	A0A3B3IS24

Frequencies

GnomAD3 genomes

AF:

0.000118

AC:

AN:

152206

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000965

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

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:

0.000206

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000557

AC:

AN:

251132

Hom.:

AF XY:

0.0000737

AC XY:

AN XY:

135772

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.0000289

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:

0.000114

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.000238

AC:

348

AN:

1461820

Hom.:

Cov.:

AF XY:

0.000248

AC XY:

180

AN XY:

727216

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.0000447

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:

0.000299

Gnomad4 OTH exome

AF:

0.000215

GnomAD4 genome

AF:

0.000118

AC:

AN:

152206

Hom.:

Cov.:

AF XY:

0.0000941

AC XY:

AN XY:

74366

show subpopulations

Gnomad4 AFR

AF:

0.0000965

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.000206

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.0000959

Hom.:

Bravo

AF:

0.0000907

EpiCase

AF:

0.000109

EpiControl

AF:

0.0000593

ClinVar

Significance: Pathogenic

Submissions summary: Pathogenic:4

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

Cystinuria

Pathogenic:2

Aug 27, 2024

Labcorp Genetics (formerly Invitae), Labcorp

Significance: Pathogenic

Review Status: criteria provided, single submitter

Collection Method: clinical testing

This sequence change creates a premature translational stop signal (p.Gln55Argfs*51) in the SLC3A1 gene. It is expected to result in an absent or disrupted protein product. Loss-of-function variants in SLC3A1 are known to be pathogenic (PMID: 24610330, 25109415, 25964309). This variant is present in population databases (rs779932118, gnomAD 0.01%). This premature translational stop signal has been observed in individuals with cystinuria (PMID: 11260385, 25964309). This variant is also known as c.161delC. ClinVar contains an entry for this variant (Variation ID: 502014). For these reasons, this variant has been classified as Pathogenic. -

Mar 14, 2024

Fulgent Genetics, Fulgent Genetics

Significance: Pathogenic

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

not provided

Pathogenic:2

May 17, 2017

Eurofins Ntd Llc (ga)

Significance: Pathogenic

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Department of Pathology and Laboratory Medicine, Sinai Health System

Significance: Pathogenic

Review Status: no assertion criteria provided

Collection Method: clinical testing

The SLC3A1 p.Q55Rfs*51 variant was identified in 13 of 634 proband chromosomes (frequency: 0.021) from individuals or families with cystinuria; the variant has been reported in cystinuria patients in the heterozygous, compound heterozygous and homozygous state (Bisceglia_2001_PMID:11260385; Gitomer_1998_PMID:9768685; Font-Llitjâˆšâ‰¥s_2005_PMID:15635077; Tostivint_2017_PMID:28646536; Brauers_2006_PMID:18947684). The variant was identified in dbSNP (ID: rs779932118) and ClinVar (classified as pathogenic by EGL Genetic Diagnostics). The variant was identified in control databases in 17 of 282536 chromosomes at a frequency of 0.00006017 (Genome Aggregation Database March 6, 2019, v2.1.1). The variant was observed in the following populations: European (non-Finnish) in 16 of 128970 chromosomes (freq: 0.000124) and Latino in 1 of 35410 chromosomes (freq: 0.000028), but was not observed in the African, Ashkenazi Jewish, East Asian, European (Finnish), Other, or South Asian populations. The c.161del variant is predicted to cause a frameshift, which alters the protein's amino acid sequence beginning at codon 55 and leads to a premature stop codon 51 amino acids downstream. This alteration is then predicted to result in a truncated or absent protein and loss of function. Loss of function variants of the SLC3A1 gene are an established mechanism of disease in cystinuria and is the type of variant expected to cause the disorder. The variant occurs outside of the splicing consensus sequence and in silico or computational prediction software programs (SpliceSiteFinder, MaxEntScan, NNSPLICE, GeneSplicer) do not predict a difference in splicing. In summary, based on the above information this variant meets our laboratoryâ€šÃ„Ã´s criteria to be classified as pathogenic. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.0

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.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over