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A Study of KRN23 in Subjects With X-linked Hypophosphatemic Rickets/Osteomalacia

A Phase 1, Multicenter, Open-label, Sequential Dose-escalation, Single-dose Study to Assess the Safety and Tolerability of KRN23 in Subjects With X-linked Hypophosphatemic Rickets/Osteomalacia.

Status
Completed
Phases
Phase 1
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT02181764
Enrollment
15
Registered
2014-07-04
Start date
2014-07-31
Completion date
2015-06-30
Last updated
2017-03-03

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

Conditions

X-linked Hypophosphatemic Rickets/Osteomalacia

Keywords

XLH

Brief summary

The objective of this study is to assess the safety and tolerability of KRN23 after a single subcutaneous (SC) administration in subjects with X-linked hypophosphatemic rickets/osteomalacia (XLH) in Japan or Korea.

Interventions

DRUGKRN23

Single SC administration on day 1: 0.3, 0.6 and 1.0 mg/kg

Sponsors

Kyowa Kirin Co., Ltd.
Lead SponsorINDUSTRY

Study design

Allocation
NA
Intervention model
SINGLE_GROUP
Primary purpose
TREATMENT
Masking
NONE

Eligibility

Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
No

Inclusion criteria

1. 18 years or older 2. Patients with XLH

Exclusion criteria

1. Have an active infection or chronic inflammatory disease 2. Have uncontrolled hypertension 3. Have uncontrolled diabetes mellitus 4. History of known immunodeficiency 5. Use of a pharmacologic vitamin D metabolite or its analogs within 21 days prior to screening and after screening 6. Use of phosphate, calcium preparation, calcimimetics, aluminum hydroxide antacids, thiazide diuretic, acetazolamide, or phosphate, calcium, and/or vitamin D-containing supplements within 10 days prior to screening and after screening 7. Pregnant or lactating females, women who are possibly pregnant or patients who have no intention of utilizing adequate contraception

Design outcomes

Primary

MeasureTime frameDescription
Number and types of adverse eventsUp to 7 weeks after dosingThe safety of KRN23 assessed by number and types of adverse events, laboratory tests

Secondary

MeasureTime frame
Profiles of pharmacokineticsPre-dose, 24, 48, 96, 168, 336, 504, 672, 840, 1176 hours post-dose

Countries

Japan, South Korea

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 5, 2026