A First-in-human Study of KK8123 in Adults With X-linked Hypophosphatemia
Public ClinicalTrials.gov record NCT06525636. Field values are reproduced from the official study page; the official ClinicalTrials.gov record remains the source of truth for eligibility, enrollment, and contact information.
Data is sourced from official ClinicalTrials.gov public API records. Always review the official ClinicalTrials.gov record for the latest information.
Official title
A Multicenter, Open-label, Phase 1/2, Dose-escalation and Subsequent Safety Extension Study of Subcutaneous KK8123 in Adult Patients With X-linked Hypophosphatemia
Study identification
- NCT ID
- NCT06525636
- Recruitment status
- Recruiting
- Study type
- Interventional
- Phase
- Phase 1, Phase 2
- Lead sponsor
- Kyowa Kirin Co., Ltd.
- Industry
- Enrollment
- 24 participants
Conditions and interventions
Conditions
Interventions
- KK8123 Drug
Drug
Eligibility (public fields only)
- Age range
- 18 Years to 65 Years
- Sex
- All
- Healthy volunteers
- Healthy volunteers not accepted
This page does not interpret eligibility. Detailed inclusion and exclusion criteria are on the official ClinicalTrials.gov record.
Study timeline
- Start date
- Oct 8, 2024
- Primary completion
- Feb 10, 2028
- Completion
- May 9, 2028
- Last update posted
- Nov 13, 2025
2024 – 2028
United States locations
- U.S. sites
- 5
- U.S. states
- 5
- U.S. cities
- 5
| Facility | City | State | ZIP | Site status |
|---|---|---|---|---|
| University of California - San Francisco | San Francisco | California | 94158 | Recruiting |
| Yale Center for XLH/ Yale University School of Medicine | New Haven | Connecticut | 06510 | Recruiting |
| Indiana University School of Medicine University Hospital | Indianapolis | Indiana | 46202 | Recruiting |
| Mayo Clinic | Rochester | Minnesota | 55905 | Not yet recruiting |
| Vanderbilt University Medical Center | Nashville | Tennessee | 37232 | Recruiting |
Site contact phone numbers, emails, and investigator names are intentionally not displayed here. Open the official ClinicalTrials.gov record for site contact information.
Non-U.S. locations
This page focuses on the U.S. directory. The official record also lists 4 non-U.S. sites.
About this trial record page
- What this page shows
- Public field values for ClinicalTrials.gov record NCT06525636, including study identification, conditions, interventions, eligibility (age, sex, healthy volunteer), timeline, and U.S. site list.
- What this page does not do
- No medical advice, eligibility judgments, treatment recommendations, study quality scoring, or AI-generated medical summaries. No site contact phone numbers, emails, or investigator names.
- Where the data comes from
- Sourced from the official ClinicalTrials.gov public API. The official record is the source of truth.
- Last refresh
- Last update posted Nov 13, 2025 · Synced May 20, 2026
Related: full search, browse by condition, browse by drug or therapy, browse by sponsor, browse by U.S. city.
Open the official record
The complete protocol, eligibility criteria, and contact information for NCT06525636 live on ClinicalTrials.gov.