Active Not Recruiting OBSERVATIONAL NCT03745521

Study of Longitudinal Observation for Patient With X-linked Hypophosphatemic Rickets/Osteomalacia in Collaboration With Asian Partners (SUNFLOWER)

An International, Multicenter, Prospective, Longitudinal Observational Study for Patient With X-linked Hypophosphatemic Rickets/Osteomalacia

Sponsor: Kyowa Kirin Co., Ltd.

Conditions X-Linked Hypophosphatemia

Interventions no intervention

Updated 11 times since 2018 Last updated: Aug 28, 2025 Started: May 1, 2018 Primary completion: Dec 31, 2028 Completion: Dec 31, 2028

This information is for research purposes only and is not medical advice. Consult a healthcare provider before making any medical decision.

This observational or N/A phase trial investigates X-Linked Hypophosphatemia and is currently ongoing. Kyowa Kirin Co., Ltd. leads this study, which shows 11 recorded versions since 2018 — indicating substantial longitudinal coverage. The change history captured here reflects the iterative nature of clinical trial conduct.

Status Flow

Change History

11 versions recorded

Oct 2025 — Present [monthly]

Active Not Recruiting
Sep 2024 — Oct 2025 [monthly]

Active Not Recruiting
Jul 2024 — Sep 2024 [monthly]

Active Not Recruiting
Sep 2023 — Jul 2024 [monthly]

Active Not Recruiting
Mar 2023 — Sep 2023 [monthly]

Active Not Recruiting

Status: Recruiting → Active Not Recruiting

▶ Show 6 earlier versions

Mar 2022 — Mar 2023 [monthly]

Recruiting
Mar 2021 — Mar 2022 [monthly]

Recruiting
Jan 2021 — Mar 2021 [monthly]

Recruiting
Mar 2020 — Jan 2021 [monthly]

Recruiting
Aug 2019 — Mar 2020 [monthly]

Recruiting
Dec 2018 — Aug 2019 [monthly]

Recruiting

First recorded

May 2018

Trial started

Per CT.gov start date — pre-dates our first snapshot

Eligibility Summary

No eligibility information available.

Contact Information

Sponsor contact:

Kyowa Kirin Co., Ltd.

Data source: Kyowa Kirin Co., Ltd.

For direct contact, visit the study record on ClinicalTrials.gov .

Study Locations

• Osaka, Japan