SLC6A8 p.Tyr498*

Variant names:

• chrX-153694445-C-A
• NM_005629.4:c.1494C>A
• SLC6A8 p.Tyr498*

Your query was ambiguous. Multiple possible variants found:

• chrX-153694445-C-A
• chrX-153694775-C-A
• chrX-153694445-C-G
• chrX-153694775-C-G

Variant summary

Our verdict is Pathogenic. The variant received 10 ACMG points: 10P and 0B. PVS1 PM2

The NM_005629.4(SLC6A8):​c.1494C>A​(p.Tyr498*) variant causes a stop gained, splice region change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a pathogenic outcome for this variant. 3/3 splice prediction tools predict no significant impact on normal splicing. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Synonymous variant affecting the same amino acid position (i.e. Y498Y) has been classified as Likely benign. Variant results in nonsense mediated mRNA decay. The gene SLC6A8 is included in the ClinGen Criteria Specification Registry.

• Frequency:
  • Genomes: not found (cov: 23)
  • Exomes 𝑓: 0.0 (0 hom. 0 hem.)
  • Failed GnomAD Quality Control
• Consequence: SLC6A8 NM_005629.4 stop_gained, splice_region
• Scores: Splicing: ADA: 0.00004086
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: -2.53
• Publications: 0 publications found

Genes affected

SLC6A8 (HGNC:11055): (solute carrier family 6 member 8) The protein encoded by this gene is a plasma membrane protein whose function is to transport creatine into and out of cells. Defects in this gene can result in X-linked creatine deficiency syndrome. Multiple transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Dec 2008]

SLC6A8 Gene-Disease associations (from GenCC):

• creatine transporter deficiency

  Inheritance: XL Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: G2P, PanelApp Australia, Labcorp Genetics (formerly Invitae), ClinGen, Orphanet

ACMG classification

Specifications for SLC6A8 are available in the ClinGen Criteria Specification Registry and recommended for reference when assigning criteria.

Our verdict: Pathogenic. The variant received 10 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

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_005629.4. 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
	SLC6A8	NM_005629.4	MANE Select	c.1494C>A	p.Tyr498*	stop_gained splice_region	Exon 10 of 13	NP_005620.1	P48029-1
	SLC6A8	NM_001142805.2		c.1464C>A	p.Tyr488*	stop_gained splice_region	Exon 10 of 13	NP_001136277.1
	SLC6A8	NM_001142806.1		c.1149C>A	p.Tyr383*	stop_gained splice_region	Exon 10 of 13	NP_001136278.1	P48029-4

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	SLC6A8	ENST00000253122.10	TSL:1 MANE Select	c.1494C>A	p.Tyr498*	stop_gained splice_region	Exon 10 of 13	ENSP00000253122.5	P48029-1
	SLC6A8	ENST00000955775.1		c.1494C>A	p.Tyr498*	stop_gained splice_region	Exon 10 of 13	ENSP00000625834.1
	SLC6A8	ENST00000922630.1		c.1485C>A	p.Tyr495*	stop_gained splice_region	Exon 10 of 13	ENSP00000592689.1

Frequencies

GnomAD3 genomes Cov.: 23

GnomAD4 exome Data not reliable, filtered out with message: AC0;AS_VQSR AF: 0.00 AC: 0 AN: 1090789 Hom.: 0 Cov.: 34 AF XY: 0.00 AC XY: 0 AN XY: 356579

African (AFR) AF: 0.00 AC: 0 AN: 26234

American (AMR) AF: 0.00 AC: 0 AN: 35192

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 19335

East Asian (EAS) AF: 0.00 AC: 0 AN: 30183

South Asian (SAS) AF: 0.00 AC: 0 AN: 53976

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 40460

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 4097

European-Non Finnish (NFE) AF: 0.00 AC: 0 AN: 835453

Other (OTH) AF: 0.00 AC: 0 AN: 45859

GnomAD4 genome Cov.: 23

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
BayesDel_addAF	Pathogenic	0.74	D
BayesDel_noAF	Pathogenic	0.43
CADD	Uncertain	25
DANN	Uncertain	0.98
FATHMM_MKL	Benign	0.54	D
PhyloP100		-2.5
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.7
Mutation Taster		=0/200	disease causing (fs/PTC)

Splicing

Name	Calibrated prediction	Score	Prediction
dbscSNV1_ADA	Benign	0.000041
dbscSNV1_RF	Benign	0.19
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

MaxEntScan Visualizer can be used to analyze the impact of this mutation on the neighboring sequence.

Other links and lift over

hg19: chrX-152959900;