rs386833988

Variant names:

• chr6-73610519-TAC-T
• rs386833988
• NM_012434.5:c.1138_1139delGT

Variant summary

Our verdict is Pathogenic. The variant received 18 ACMG points: 18P and 0B. PVS1 PM2 PP5_Very_Strong

The NM_012434.5(SLC17A5):​c.1138_1139delGT​(p.Val380SerfsTer8) variant causes a frameshift change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.0000638 in 1,614,014 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Pathogenic (★★). Synonymous variant affecting the same amino acid position (i.e. V380V) has been classified as Likely benign. Variant results in nonsense mediated mRNA decay.

• Frequency:
  • Genomes: 𝑓 0.000079 (0 hom., cov: 32)
  • Exomes 𝑓: 0.000062 (0 hom.)
• Consequence: SLC17A5 NM_012434.5 frameshift
• Clinical Significance: Pathogenic criteria provided, multiple submitters, no conflicts P:9
• Conservation: PhyloP100: 8.88
• Publications: 5 publications found

Genes affected

SLC17A5 (HGNC:10933): (solute carrier family 17 member 5) This gene encodes a membrane transporter that exports free sialic acids that have been cleaved off of cell surface lipids and proteins from lysosomes. Mutations in this gene cause sialic acid storage diseases, including infantile sialic acid storage disorder and and Salla disease, an adult form. [provided by RefSeq, Jul 2008]

SLC17A5 Gene-Disease associations (from GenCC):

• free sialic acid storage disease

  Inheritance: AR Classification: DEFINITIVE Submitted by: ClinGen
• Salla disease

  Inheritance: AR Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: Myriad Women’s Health, G2P, PanelApp Australia, Orphanet, Genomics England PanelApp
• free sialic acid storage disease, infantile form

  Inheritance: AR Classification: STRONG, SUPPORTIVE Submitted by: Labcorp Genetics (formerly Invitae), Genomics England PanelApp, PanelApp Australia, Orphanet
• intermediate severe Salla disease

  Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet

ACMG classification

Our verdict: Pathogenic. The variant received 18 ACMG points.

• PVS1: Loss of function variant, product undergoes nonsense mediated mRNA decay. LoF is a known mechanism of disease.
• PM2: Very rare variant in population databases, with high coverage
• PP5: Variant 6-73610519-TAC-T is Pathogenic according to our data. Variant chr6-73610519-TAC-T is described in ClinVar as Pathogenic. ClinVar VariationId is 56552.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_012434.5. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	SLC17A5	NM_012434.5	MANE Select	c.1138_1139delGT	p.Val380SerfsTer8	frameshift	Exon 9 of 11	NP_036566.1	Q9NRA2-1
	SLC17A5	NM_001382633.1		c.1138_1139delGT	p.Val380SerfsTer8	frameshift	Exon 9 of 12	NP_001369562.1
	SLC17A5	NM_001382631.1		c.1159_1160delGT	p.Val387SerfsTer8	frameshift	Exon 10 of 12	NP_001369560.1

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	SLC17A5	ENST00000355773.6	TSL:1 MANE Select	c.1138_1139delGT	p.Val380SerfsTer8	frameshift	Exon 9 of 11	ENSP00000348019.5	Q9NRA2-1
	SLC17A5	ENST00000957536.1		c.1252_1253delGT	p.Val418SerfsTer8	frameshift	Exon 10 of 12	ENSP00000627595.1
	SLC17A5	ENST00000957535.1		c.1060_1061delGT	p.Val354SerfsTer8	frameshift	Exon 9 of 11	ENSP00000627594.1

Frequencies

GnomAD3 genomes AF: 0.0000789 AC: 12 AN: 152162 Hom.: 0 Cov.: 32

Gnomad AFR AF: 0.0000241

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: 0.000162

Gnomad OTH AF: 0.00

GnomAD2 exomes AF: 0.0000517 AC: 13 AN: 251458 AF XY: 0.0000662

Gnomad AFR exome AF: 0.00

Gnomad AMR exome AF: 0.00

Gnomad ASJ exome AF: 0.00

Gnomad EAS 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: 0.0000622 AC: 91 AN: 1461852 Hom.: 0 AF XY: 0.0000715 AC XY: 52 AN XY: 727228

African (AFR) AF: 0.00 AC: 0 AN: 33480

American (AMR) AF: 0.0000224 AC: 1 AN: 44724

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26132

East Asian (EAS) AF: 0.00 AC: 0 AN: 39690

South Asian (SAS) AF: 0.00 AC: 0 AN: 86258

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 53412

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5768

European-Non Finnish (NFE) AF: 0.0000746 AC: 83 AN: 1111996

Other (OTH) AF: 0.000116 AC: 7 AN: 60392

GnomAD4 genome AF: 0.0000789 AC: 12 AN: 152162 Hom.: 0 Cov.: 32 AF XY: 0.0000135 AC XY: 1 AN XY: 74344

African (AFR) AF: 0.0000241 AC: 1 AN: 41432

American (AMR) AF: 0.00 AC: 0 AN: 15260

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 3466

East Asian (EAS) AF: 0.00 AC: 0 AN: 5202

South Asian (SAS) AF: 0.00 AC: 0 AN: 4830

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 10616

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 316

European-Non Finnish (NFE) AF: 0.000162 AC: 11 AN: 68040

Other (OTH) AF: 0.00 AC: 0 AN: 2088

Alfa AF: 0.00 Hom.: 0

Bravo AF: 0.0000642

EpiCase AF: 0.000218

EpiControl AF: 0.000296

ClinVar

ClinVar submissions

Significance: Pathogenic

Revision: criteria provided, multiple submitters, no conflicts

Pathogenic	VUS	Benign	Condition
8	-	-	Salla disease (8)
1	-	-	not provided (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
PhyloP100		8.9
Mutation Taster		=5/195	disease causing (ClinVar)

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

Other links and lift over

dbSNP: rs386833988; hg19: chr6-74320242;