ClinVar Miner

Submissions for variant NM_000444.6(PHEX):c.230G>T (p.Cys77Phe) (rs1556014263)

Minimum review status: Collection method:
Minimum conflict level:
ClinVar version:
Total submissions: 2
Download table as spreadsheet
Submitter RCV SCV Clinical significance Condition Last evaluated Review status Method Comment
Institute of Human Genetics, Klinikum rechts der Isar RCV000505416 SCV000599628 pathogenic Familial X-linked hypophosphatemic vitamin D refractory rickets 2013-10-31 criteria provided, single submitter clinical testing
Invitae RCV001035982 SCV001199322 likely pathogenic not provided 2019-12-20 criteria provided, single submitter clinical testing This sequence change replaces cysteine with phenylalanine at codon 77 of the PHEX protein (p.Cys77Phe). The cysteine residue is highly conserved and there is a large physicochemical difference between cysteine and phenylalanine. This variant is not present in population databases (ExAC no frequency). This variant has been observed in individual(s) with hypophosphatemia (Invitae). ClinVar contains an entry for this variant (Variation ID: 438501). Algorithms developed to predict the effect of missense changes on protein structure and function (SIFT, PolyPhen-2, Align-GVGD) all suggest that this variant is likely to be disruptive, but these predictions have not been confirmed by published functional studies and their clinical significance is uncertain. This variant disrupts the p.Cys77 amino acid residue in PHEX. Other variant(s) that disrupt this residue have been determined to be pathogenic (PMID: 9097956, 26051471, 27840894). This suggests that this residue is clinically significant, and that variants that disrupt this residue are likely to be disease-causing. In summary, the currently available evidence indicates that the variant is pathogenic, but additional data are needed to prove that conclusively. Therefore, this variant has been classified as Likely Pathogenic.

The information on this website is not intended for direct diagnostic use or medical decision-making without review by a genetics professional. Individuals should not change their health behavior solely on the basis of information contained on this website. Neither the University of Utah nor the National Institutes of Health independently verfies the submitted information. If you have questions about the information contained on this website, please see a health care professional.