# X-linked Hypophosphatemia Disease Monitoring Program

> **NCT03651505** · — · ACTIVE_NOT_RECRUITING · sponsor: **Ultragenyx Pharmaceutical Inc** · enrollment: 782 (actual)

## Conditions studied

- X-linked Hypophosphatemia
- Hypophosphatemic Rickets

## Interventions

- **OTHER:** No intervention

## Key facts

- **NCT ID:** NCT03651505
- **Lead sponsor:** Ultragenyx Pharmaceutical Inc
- **Sponsor class:** INDUSTRY
- **Phase:** —
- **Study type:** OBSERVATIONAL
- **Status:** ACTIVE_NOT_RECRUITING
- **Start date:** 2018-07-16
- **Primary completion:** 2032-12
- **Final completion:** 2032-12
- **Target enrollment:** 782 (ACTUAL)
- **Last updated:** 2026-02-17

## Collaborators

- [object Object]

## Primary source

ClinicalTrials.gov registry: https://clinicaltrials.gov/study/NCT03651505

## Citation

> US National Library of Medicine, ClinicalTrials.gov registration NCT03651505, "X-linked Hypophosphatemia Disease Monitoring Program". Retrieved via AI Analytics 2026-06-03 from https://api.ai-analytics.org/clinical/NCT03651505. Licensed CC0.

---

*[Clinical trials dataset](/datasets/clinical-trials) · CC0 1.0*