rs267606945

Variant names:

• chrX-22094005-T-C
• rs267606945
• NM_000444.6:c.755T>C

Variant summary

Our verdict is Likely pathogenic. The variant received 9 ACMG points: 9P and 0B. PM1 PM2 PP2 PP3_Moderate PP5_Moderate

The NM_000444.6(PHEX):​c.755T>C​(p.Phe252Ser) variant causes a missense change. 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: 23)
• Consequence: PHEX NM_000444.6 missense
• Clinical Significance: Pathogenic criteria provided, single submitter P:1
• Conservation: PhyloP100: 5.50
• Publications: 5 publications found

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]

PHEX Gene-Disease associations (from GenCC):

• X-linked dominant hypophosphatemic rickets

  Inheritance: XL Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: Illumina, Labcorp Genetics (formerly Invitae), Orphanet

ACMG classification

Our verdict: Likely_pathogenic. The variant received 9 ACMG points.

• PM1: In a hotspot region, there are 2 aminoacids with missense pathogenic changes in the window of +-8 aminoacids around while only 0 benign, 6 uncertain in NM_000444.6
• PM2: Very rare variant in population databases, with high coverage
• PP2: Missense variant in the gene, where a lot of missense mutations are associated with disease in ClinVar. The gene has 135 curated pathogenic missense variants (we use a threshold of 10). The gene has 25 curated benign missense variants. Gene score misZ: 1.7091 (below the threshold of 3.09). Trascript score misZ: NaN (below the threshold of 3.09). GenCC associations: The gene is linked to X-linked dominant hypophosphatemic rickets.
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.911
• PP5: Variant X-22094005-T-C is Pathogenic according to our data. Variant chrX-22094005-T-C is described in ClinVar as Pathogenic. ClinVar VariationId is 242795.Status of the report is criteria_provided_single_submitter, 1 stars.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_000444.6. 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
	PHEX	NM_000444.6	MANE Select	c.755T>C	p.Phe252Ser	missense	Exon 7 of 22	NP_000435.3
	PHEX	NM_001282754.2		c.755T>C	p.Phe252Ser	missense	Exon 7 of 21	NP_001269683.1

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	PHEX	ENST00000379374.5	TSL:1 MANE Select	c.755T>C	p.Phe252Ser	missense	Exon 7 of 22	ENSP00000368682.4
	PHEX	ENST00000684143.1		c.752T>C	p.Phe251Ser	missense	Exon 7 of 11	ENSP00000508264.1
	PHEX	ENST00000475778.2	TSL:5	n.1181T>C		non_coding_transcript_exon	Exon 7 of 9

Frequencies

GnomAD3 genomes Cov.: 23

GnomAD4 exome Cov.: 27

GnomAD4 genome Cov.: 23

Alfa AF: 0.00 Hom.: 0

ClinVar

ClinVar submissions as Germline

Significance: Pathogenic

Revision: criteria provided, single submitter

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

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	0.95
BayesDel_addAF	Pathogenic	0.44	D
BayesDel_noAF	Pathogenic	0.39
CADD	Uncertain	26
DANN	Uncertain	1.0
DEOGEN2	Pathogenic	0.81	D
FATHMM_MKL	Uncertain	0.95	D
LIST_S2	Benign	0.83	T
M_CAP	Pathogenic	0.65	D
MetaRNN	Pathogenic	0.91	D
MetaSVM	Uncertain	0.039	D
MutationAssessor	Uncertain	2.4	M
PhyloP100		5.5
PrimateAI	Pathogenic	0.83	D
PROVEAN	Pathogenic	-5.7	D
REVEL	Pathogenic	0.84
Sift	Pathogenic	0.0	D
Sift4G	Uncertain	0.0060	D
Polyphen		1.0	D
Vest4		0.89
MutPred		0.65		Loss of stability (P = 9e-04)
MVP		1.0
MPC		1.5
ClinPred		1.0	D
GERP RS		5.5
Varity_R		0.97
gMVP		0.91
Mutation Taster		=69/31	polymorphism

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

Other links and lift over

dbSNP: rs267606945; hg19: chrX-22112123;