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PHEX Gene Curation

PHEX Gene Curation

Gene-disease assertions not curated here (add link or write note): Curating for molecular mechanism only.

Disease

X-linked hypophosphatemia

Disease

X-linked hypophosphatemia

Inheritance

X-linked

Prevalence

 

Source:

Rapid or full curation?

Rapid
Full

ClinGen / GenCC / BabySeq / HGMD / OMIM

Clingen Dosage - curated as 3 (Sufficient evidence for haploinsufficiency). Report states LOF is mechanism, but no citations.

Clinical Actionability - pending assertion.

GenCC - Definitive by Illumina and Strong by Invitae. No need to curate clinical validity.

Clinical Validity Scoring Notes and points

 

Clinical Validity Points Total

Clinical Validity Classification

Definitive (12pts)

Strong (12pts)

Moderate (7-11pts)

Limited (0.1-6pts)

No genetic evidence

Refuted

Disputed

 

Strong/Definitive

Molecular Mechanism

Loss of function

Gain of function

Dominant negative

Unknown

Other

Loss of function

PMID: 9077527, 9106524, 9097956

Animal model - Hyp mouse displays the hypophosphatemia phenotype and has been reported to have a large deletion in the 3' region of PHEX (PMID: 9077527).

PMID: 9106524

  • reports several truncations in patients with hypophosphatemia, though based on HGMD it looks like the numberig is off:

    • Leu277* (aka Leu274stop) in patient B42

    • c.58C>T p.R20* (aka R17*

    • c.871C>T p.R291* (aka Arg288*)

PMID: 9097956

  • Reports several families with LOF variants. See table 1.

Penetrance

Complete (100%)

High (≥80%)

Moderate  (<80% and >20%)

Low (≤20%)

(list source/PMID)

 

Source:

Age of Onset

Congenital

Pediatric

Adolescent

Adulthood

Late adulthood

(list source/PMID)

 

Severity

 

Clinical Features

 

Sources:

HPO Terms

https://hpo.jax.org/app/

 

Gene SOPs & Notes

 LINK if SOP is a long document. Short notes if it is easy to digest. eg. Last known truncating variant

Curation Summary

 

Case ID, Curator name, Date, Jira ticket link

Andrea Oza 10.01.24 SDSM-2UV SDOR-J2 PDO-37768 56752305182588