rs587784402

Variant names:

• chrX-135998860-A-G
• rs587784402
• NM_001379110.1:c.529A>G

Variant summary

Our verdict is Uncertain significance. The variant received 0 ACMG points: 2P and 2B. PM2 BP4_Moderate

The NM_001379110.1(SLC9A6):​c.529A>G​(p.Ile177Val) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000186 in 1,075,236 control chromosomes in the GnomAD database, with no homozygous occurrence. There are 1 hemizygotes in GnomAD. In-silico tool predicts a benign outcome for this variant. 13/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★★).

• Frequency:
  • Genomes: not found (cov: 23)
  • Exomes 𝑓: 0.0000019 (0 hom. 1 hem.)
• Consequence: SLC9A6 NM_001379110.1 missense
• Clinical Significance: Uncertain significance criteria provided, multiple submitters, no conflicts U:2
• Conservation: PhyloP100: 0.530
• Publications: 0 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, STRONG, SUPPORTIVE Submitted by: Orphanet, PanelApp Australia, G2P, ClinGen

ACMG classification

Our verdict: Uncertain_significance. The variant received 0 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.11040133).

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_001379110.1. 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
	SLC9A6	NM_001379110.1	MANE Select	c.529A>G	p.Ile177Val	missense	Exon 6 of 18	NP_001366039.1	A0A0D9SGH0
	SLC9A6	NM_001438742.1		c.685A>G	p.Ile229Val	missense	Exon 5 of 17	NP_001425671.1
	SLC9A6	NM_001042537.2		c.685A>G	p.Ile229Val	missense	Exon 5 of 16	NP_001036002.1	Q92581-2

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	SLC9A6	ENST00000630721.3	TSL:4 MANE Select	c.529A>G	p.Ile177Val	missense	Exon 6 of 18	ENSP00000487486.2	A0A0D9SGH0
	SLC9A6	ENST00000370695.8	TSL:1	c.685A>G	p.Ile229Val	missense	Exon 5 of 16	ENSP00000359729.4	Q92581-2
	SLC9A6	ENST00000370698.7	TSL:1	c.589A>G	p.Ile197Val	missense	Exon 5 of 16	ENSP00000359732.3	Q92581-1

Frequencies

GnomAD3 genomes Cov.: 23

GnomAD2 exomes AF: 0.00000545 AC: 1 AN: 183385 AF XY: 0.0000147

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: 0.0000122

Gnomad OTH exome AF: 0.00

GnomAD4 exome AF: 0.00000186 AC: 2 AN: 1075236 Hom.: 0 Cov.: 27 AF XY: 0.00000291 AC XY: 1 AN XY: 343642

African (AFR) AF: 0.00 AC: 0 AN: 26010

American (AMR) AF: 0.00 AC: 0 AN: 35183

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 19248

East Asian (EAS) AF: 0.00 AC: 0 AN: 30112

South Asian (SAS) AF: 0.00 AC: 0 AN: 53567

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 40500

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 4081

European-Non Finnish (NFE) AF: 0.00000244 AC: 2 AN: 821217

Other (OTH) AF: 0.00 AC: 0 AN: 45318

GnomAD4 genome Cov.: 23

ClinVar

ClinVar submissions

Significance: Uncertain significance

Revision: criteria provided, multiple submitters, no conflicts

Pathogenic	VUS	Benign	Condition
-	1	-	Christianson syndrome (1)
-	1	-	not provided (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.058
BayesDel_addAF	Benign	-0.45	T
BayesDel_noAF	Benign	-0.88
CADD	Benign	17
DANN	Uncertain	0.98
DEOGEN2	Benign	0.086	T
FATHMM_MKL	Benign	0.17	N
LIST_S2	Benign	0.83	T
M_CAP	Benign	0.0061	T
MetaRNN	Benign	0.11	T
MetaSVM	Benign	-1.0	T
MutationAssessor	Benign	1.1	L
PhyloP100		0.53
PrimateAI	Uncertain	0.53	T
PROVEAN	Benign	-0.53	N
REVEL	Benign	0.074
Sift	Benign	0.25	T
Sift4G	Benign	0.24	T
Polyphen		0.0	B
Vest4		0.13
MutPred		0.66		Loss of stability (P = 0.523)
MVP		0.15
MPC		0.88
ClinPred		0.085	T
GERP RS		4.3
Varity_R		0.16
gMVP		0.35
Mutation Taster		=95/5	polymorphism

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.050		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: rs587784402; hg19: chrX-135081019; COSMIC: COSV65789120;