rs6634993

chrX-134495484-G-AchrX-134495484-G-C

Variant summary

Our verdict is Benign. Variant got -12 ACMG points: 0P and 12B. BP4_Strong BA1

The NM_000194.3(HPRT1):c.485+1894G>A variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.147 in 111,285 control chromosomes in the GnomAD database, including 1,126 homozygotes. There are 4,585 hemizygotes in GnomAD. In-silico tool predicts a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

• Frequency: Genomes: 𝑓 0.15 (1126 hom., 4585 hem., cov: 23)
• Consequence: HPRT1 NM_000194.3 intron
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: -1.05

Genes affected

HPRT1 (HGNC:5157): (hypoxanthine phosphoribosyltransferase 1) The protein encoded by this gene is a transferase, which catalyzes conversion of hypoxanthine to inosine monophosphate and guanine to guanosine monophosphate via transfer of the 5-phosphoribosyl group from 5-phosphoribosyl 1-pyrophosphate. This enzyme plays a central role in the generation of purine nucleotides through the purine salvage pathway. Mutations in this gene result in Lesch-Nyhan syndrome or gout.[provided by RefSeq, Jun 2009]

ACMG classification

Verdict is Benign. Variant got -12 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.97).
• BA1: GnomAd4 highest subpopulation (AFR) allele frequency at 95% confidence interval = 0.25 is higher than 0.05.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
HPRT1	NM_000194.3	c.485+1894G>A		intron_variant		ENST00000298556.8

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
HPRT1	ENST00000298556.8	c.485+1894G>A		intron_variant		1	NM_000194.3	P1
HPRT1	ENST00000462974.5	n.643+1894G>A		intron_variant, non_coding_transcript_variant		3
HPRT1	ENST00000475720.1	n.443+1894G>A		intron_variant, non_coding_transcript_variant		3

Frequencies

GnomAD3 genomes AF: 0.146 AC: 16279 AN: 111239 Hom.: 1125 Cov.: 23 AF XY: 0.136 AC XY: 4552 AN XY: 33489

Gnomad AFR AF: 0.254

Gnomad AMI AF: 0.0646

Gnomad AMR AF: 0.0997

Gnomad ASJ AF: 0.119

Gnomad EAS AF: 0.217

Gnomad SAS AF: 0.0457

Gnomad FIN AF: 0.0895

Gnomad MID AF: 0.0932

Gnomad NFE AF: 0.103

Gnomad OTH AF: 0.150

We have no GnomAD4 exomes data on this position. Probably position not covered by the project.

GnomAD4 genome AF: 0.147 AC: 16312 AN: 111285 Hom.: 1126 Cov.: 23 AF XY: 0.137 AC XY: 4585 AN XY: 33545

Gnomad4 AFR AF: 0.254

Gnomad4 AMR AF: 0.0995

Gnomad4 ASJ AF: 0.119

Gnomad4 EAS AF: 0.216

Gnomad4 SAS AF: 0.0474

Gnomad4 FIN AF: 0.0895

Gnomad4 NFE AF: 0.103

Gnomad4 OTH AF: 0.149

Alfa AF: 0.119 Hom.: 1222

Bravo AF: 0.155

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.97
Cadd	Benign	7.2
Dann	Benign	0.89

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: rs6634993; hg19: chrX-133629514;