rs398123003

Variant names:

• chrX-136030154-G-T
• rs398123003
• NM_001379110.1:c.1573G>T

Variant summary

Our verdict is Pathogenic. The variant received 11 ACMG points: 11P and 0B. PVS1 PM2 PP5

The NM_001379110.1(SLC9A6):​c.1573G>T​(p.Glu525*) variant causes a stop gained change involving the alteration of a conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Pathogenic (no stars). Variant results in nonsense mediated mRNA decay.

• Frequency: Genomes: not found (cov: 23)
• Consequence: SLC9A6 NM_001379110.1 stop_gained
• Clinical Significance: Pathogenic no assertion criteria provided P:1
• Conservation: PhyloP100: 8.01
• Publications: 4 publications found

Genes affected

SLC9A6 (HGNC:11079): (solute carrier family 9 member A6) This gene encodes a sodium-hydrogen exchanger that is amember of the solute carrier family 9. The encoded protein localizes to early and recycling endosomes and may be involved in regulating endosomal pH and volume. Defects in this gene are associated with X-linked syndromic cognitive disability, Christianson type. Alternate splicing results in multiple transcript variants.[provided by RefSeq, Apr 2010]

SLC9A6 Gene-Disease associations (from GenCC):

• Christianson syndrome

  Inheritance: XL Classification: DEFINITIVE, SUPPORTIVE Submitted by: G2P, Orphanet, ClinGen

ACMG classification

Our verdict: Pathogenic. The variant received 11 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 X-136030154-G-T is Pathogenic according to our data. Variant chrX-136030154-G-T is described in ClinVar as Pathogenic. ClinVar VariationId is 92121.Status of the report is no_assertion_criteria_provided, 0 stars.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
SLC9A6	NM_001379110.1	c.1573G>T	p.Glu525*	stop_gained	Exon 15 of 18	ENST00000630721.3	NP_001366039.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
SLC9A6	ENST00000630721.3	c.1573G>T	p.Glu525*	stop_gained	Exon 15 of 18	4	NM_001379110.1	ENSP00000487486.2
SLC9A6	ENST00000370695.8	c.1639G>T	p.Glu547*	stop_gained	Exon 13 of 16	1		ENSP00000359729.4
SLC9A6	ENST00000370698.7	c.1543G>T	p.Glu515*	stop_gained	Exon 13 of 16	1		ENSP00000359732.3
SLC9A6	ENST00000370701.6	c.1483G>T	p.Glu495*	stop_gained	Exon 14 of 17	1		ENSP00000359735.1

Frequencies

GnomAD3 genomes Cov.: 23

GnomAD4 exome Cov.: 28

GnomAD4 genome Cov.: 23

Alfa AF: 0.00 Hom.: 0

ClinVar

Significance: Pathogenic

Submissions summary: Pathogenic:1

Revision: no assertion criteria provided

Submissions by phenotype

Christianson syndrome Pathogenic:1

Dec 01, 2013

OMIM

Significance: Pathogenic

Review Status: no assertion criteria provided

Collection Method: literature only

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Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_addAF	Pathogenic	0.63	D
BayesDel_noAF	Pathogenic	0.62
CADD	Pathogenic	46
DANN	Uncertain	1.0
FATHMM_MKL	Pathogenic	0.98	D
PhyloP100		8.0
Vest4		0.87, 0.88, 0.93
GERP RS		4.1
Mutation Taster		=1/199	disease causing (ClinVar)

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.34		Details are displayed if max score is > 0.2
DS_DL_spliceai		0.34		Position offset: 8

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

Other links and lift over

dbSNP: rs398123003; hg19: chrX-135112313;