X-22033063-C-T
Variant summary
Our verdict is Pathogenic. Variant got 18 ACMG points: 18P and 0B. PVS1PM2PP5_Very_Strong
The NM_000444.6(PHEX):c.58C>T(p.Arg20Ter) variant causes a stop gained 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. Variant has been reported in ClinVar as Pathogenic (★★).
Frequency
Genomes: not found (cov: 22)
Consequence
PHEX
NM_000444.6 stop_gained
NM_000444.6 stop_gained
Scores
2
1
2
Clinical Significance
Conservation
PhyloP100: 1.74
Genes affected
PHEX (HGNC:8918): (phosphate regulating endopeptidase X-linked) The protein encoded by this gene is a transmembrane endopeptidase that belongs to the type II integral membrane zinc-dependent endopeptidase family. The protein is thought to be involved in bone and dentin mineralization and renal phosphate reabsorption. Mutations in this gene cause X-linked hypophosphatemic rickets. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Sep 2013]
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ACMG classification
Classification made for transcript
Verdict is Pathogenic. Variant got 18 ACMG points.
PVS1
?
Loss of function variant, product does not undergo nonsense mediated mRNA decay. Variant located near the start codon (<100nt), not predicted to undergo nonsense mediated mRNA decay. There are 425 pathogenic variants in the truncated region.
PM2
?
Very rare variant in population databases, with high coverage;
PP5
?
Variant X-22033063-C-T is Pathogenic according to our data. Variant chrX-22033063-C-T is described in ClinVar as [Pathogenic]. Clinvar id is 379502.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars. Variant chrX-22033063-C-T is described in Lovd as [Pathogenic]. Variant chrX-22033063-C-T is described in Lovd as [Pathogenic].
Transcripts
RefSeq
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | MANE | UniProt |
---|---|---|---|---|---|---|---|
PHEX | NM_000444.6 | c.58C>T | p.Arg20Ter | stop_gained | 1/22 | ENST00000379374.5 | |
PHEX | NM_001282754.2 | c.58C>T | p.Arg20Ter | stop_gained | 1/21 | ||
PHEX | XM_047442159.1 | c.58C>T | p.Arg20Ter | stop_gained | 1/13 |
Ensembl
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | TSL | MANE | Appris | UniProt |
---|---|---|---|---|---|---|---|---|---|
PHEX | ENST00000379374.5 | c.58C>T | p.Arg20Ter | stop_gained | 1/22 | 1 | NM_000444.6 | P1 | |
PHEX | ENST00000684143.1 | c.58C>T | p.Arg20Ter | stop_gained | 1/11 | ||||
PHEX | ENST00000475778.2 | n.484C>T | non_coding_transcript_exon_variant | 1/9 | 5 | ||||
PHEX | ENST00000683214.1 | n.484C>T | non_coding_transcript_exon_variant | 1/2 |
Frequencies
GnomAD3 genomes ? Cov.: 22
GnomAD3 genomes
?
Cov.:
22
GnomAD4 exome Cov.: 29
GnomAD4 exome
Cov.:
29
GnomAD4 genome ? Cov.: 22
GnomAD4 genome
?
Cov.:
22
ClinVar
Significance: Pathogenic
Submissions summary: Pathogenic:5
Revision: criteria provided, multiple submitters, no conflicts
LINK: link
Submissions by phenotype
Familial X-linked hypophosphatemic vitamin D refractory rickets Pathogenic:3
Pathogenic, criteria provided, single submitter | clinical testing | Kasturba Medical College, Manipal, Kasturba Medical College, Manipal, Manipal Academy of Higher Education, Manipal, India | Jan 13, 2022 | - - |
Pathogenic, no assertion criteria provided | research | Beijing Key Laboratory for Genetic Research of Skeletal Deformity, Peking Union Medical College Hospital | May 31, 2019 | - - |
Pathogenic, criteria provided, single submitter | clinical testing | Institute of Human Genetics Munich, Klinikum Rechts Der Isar, TU München | Oct 28, 2013 | - - |
not provided Pathogenic:2
Pathogenic, criteria provided, single submitter | clinical testing | Invitae | Oct 22, 2023 | This sequence change creates a premature translational stop signal (p.Arg20*) in the PHEX gene. It is expected to result in an absent or disrupted protein product. Loss-of-function variants in PHEX are known to be pathogenic (PMID: 9097956, 9106524, 19219621). This variant is not present in population databases (gnomAD no frequency). This premature translational stop signal has been observed in individuals with X-linked hypophosphatemic rickets (PMID: 9097956, 9199930). ClinVar contains an entry for this variant (Variation ID: 379502). For these reasons, this variant has been classified as Pathogenic. - |
Pathogenic, criteria provided, single submitter | clinical testing | GeneDx | Mar 04, 2016 | The R20X nonsense variant in the PHEX gene has been frequently reported in association withX-Linked Hypophosphatemic Rickets (Rowe et al., 1997; Francis et al., 1997; Cho et al., 2005). TheR20X variant was not observed in approximately 6,500 individuals of European and African Americanancestry in the NHLBI Exome Sequencing Project, indicating it is not a common benign variant inthese populations. This pathogenic variant is predicted to cause loss of normal protein function eitherthrough protein truncation or nonsense-mediated mRNA decay. - |
Computational scores
Source:
Name
Calibrated prediction
Score
Prediction
BayesDel_addAF
Pathogenic
D
BayesDel_noAF
Pathogenic
Cadd
Pathogenic
Dann
Uncertain
FATHMM_MKL
Benign
N
MutationTaster
Benign
A;A
Vest4
GERP RS
Splicing
Name
Calibrated prediction
Score
Prediction
SpliceAI score (max)
Details are displayed if max score is > 0.2
Find out detailed SpliceAI scores and Pangolin per-transcript scores at