rs1556614706

Variant names:

• chrX-135985511-G-C
• rs1556614706
• ENST00000370695.8:c.9G>C

Variant summary

Our verdict is Likely benign. Variant got -5 ACMG points: 2P and 7B. PM2 BP4_Strong BP6_Moderate BP7

The NM_001042537.2(SLC9A6):​c.9G>C​(p.Arg3Arg) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000101 in 993,662 control chromosomes in the GnomAD database, with no homozygous occurrence. There are no hemizygote samples in GnomAD. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★).

• Frequency:
  • Genomes: not found (cov: 21)
  • Exomes 𝑓: 0.0000010 (0 hom. 0 hem.)
• Consequence: SLC9A6 NM_001042537.2 synonymous
• Clinical Significance: Likely benign criteria provided, single submitter B:1
• Conservation: PhyloP100: 0.0820

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]

ACMG classification

Verdict is Likely_benign. Variant got -5 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.79).
• BP6: Variant X-135985511-G-C is Benign according to our data. Variant chrX-135985511-G-C is described in ClinVar as [Likely_benign]. Clinvar id is 1156645.Status of the report is criteria_provided_single_submitter, 1 stars.
• BP7: Synonymous conserved (PhyloP=0.082 with no splicing effect.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
SLC9A6	NM_001379110.1	c.-57+34G>C		intron_variant	Intron 1 of 17	ENST00000630721.3	NP_001366039.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
SLC9A6	ENST00000370695.8	c.9G>C	p.Arg3Arg	synonymous_variant	Exon 1 of 16	1		ENSP00000359729.4
SLC9A6	ENST00000370698.7	c.9G>C	p.Arg3Arg	synonymous_variant	Exon 1 of 16	1		ENSP00000359732.3
SLC9A6	ENST00000630721.3	c.-57+34G>C		intron_variant	Intron 1 of 17	4	NM_001379110.1	ENSP00000487486.2
SLC9A6	ENST00000370701.6	c.-57+34G>C		intron_variant	Intron 1 of 16	1		ENSP00000359735.1

Frequencies

GnomAD3 genomes Cov.: 21

GnomAD4 exome AF: 0.00000101 AC: 1 AN: 993662 Hom.: 0 Cov.: 30 AF XY: 0.00 AC XY: 0 AN XY: 311742

Gnomad4 AFR exome AF: 0.00

Gnomad4 AMR exome AF: 0.00

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: 0.00

Gnomad4 OTH exome AF: 0.0000238

GnomAD4 genome Cov.: 21

Bravo AF: 0.00000756

ClinVar

Significance: Likely benign

Submissions summary: Benign:1

Revision: criteria provided, single submitter

Submissions by phenotype

Christianson syndrome Benign:1

May 09, 2024

Labcorp Genetics (formerly Invitae), Labcorp

Significance: Likely benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

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Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.79
CADD	Benign	12
DANN	Benign	0.74

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

Other links and lift over

dbSNP: rs1556614706; hg19: chrX-135067670;