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Molecular genetic mechanism of FGF23-dependent phosphaturic mesenchymal tumor induced hypophosphatemia osteomalacia

Molecular genetic mechanism of FGF23-dependent phosphaturic mesenchymal tumor induced hypophosphatemia osteomalacia

Status
Active, not recruiting
Phases
Early Phase 1
Study type
Observational
Source
ChiCTR
Registry ID
ChiCTR2100042796
Enrollment
Unknown
Registered
2021-01-28
Start date
2021-02-01
Completion date
Unknown
Last updated
2025-08-25

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

tumor-induced osteomalacia

Interventions

Case series:Nil

Sponsors

Shanghai Jiao Tong University Affiliated Sixth People's Hospital
Lead Sponsor

Eligibility

Sex/Gender
All

Inclusion criteria

Inclusion criteria: 1. Clinical manifestations and laboratory biochemical examinations consistent with hypophosphatemia osteomalacia; 2. Serum FGFF23 level is 2 times higher than normal range; 3. Imaging examinations including B-ultrasound, CT, MRI, OCT-SPECT and etc confirm the existence of space occupying lesion; 4. Pathological diagnosis of the tumor removed by exairesis is phosphateuria mesenchymal tumor; 5. After exairesis, blood phosphorus returned to normal and serum FGF23 levels decreased significantly.

Exclusion criteria

Exclusion criteria: 1. Patients with heritable or sporadic hypophosphatemic rickets or osteomalacia caused by gene mutations; 2. Adefovir dipivoxil, tenofovir and other drugs with renal toxicity users; 3. Patients with diseases that may affect phosphorus metabolism, such as kidney disease, autoimmune diseases, Crohns disease, chronic dysentery, Cushings syndrome, hyperthyroidism/Hyperparathyroidism or hypothyroidism/ hypoparathyroidism, etc; 4. Patients with malignant tumors (excluding malignant phosphaturia mesenchymal tumor).

Design outcomes

Primary

MeasureTime frame
fibroblast growth factor 23;

Countries

China

Contacts

Public ContactZhen-lin Zhang

Shanghai Jiao Tong University Affiliated Sixth People's Hospital

zhangzl@sjtu.edu.cn+86 13621673716

Outcome results

None listed

Source: ChiCTR (via WHO ICTRP) · Data processed: Feb 4, 2026