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MinorTrial status: Enrolling by Invitation to Active, Not Recruiting
Enrollment target: estimated 14 to confirmed 9
Primary completion date changed from estimate of Mar 11, 2026 to Nov 17, 2021
v256
Minor3 versionsRe-verified since Oct 8, 2021, no change to tracked fieldsv253-v255
NotablePrimary endpoint revised
Secondary endpoints revised (6)
v252
Minor2 versionsRe-verified since Aug 5, 2021, no change to tracked fieldsv250-v251
NotableEnrollment target: 5 to 14v249
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Minor3 versionsRe-verified since Jul 10, 2020, no change to tracked fieldsv246-v248
NotableEnrollment target: 3 to 5v245
MinorEnrollment target: estimated 14 to confirmed 3
Secondary endpoints: 5 to 6
v244
NotablePrimary endpoint revised
Secondary endpoints revised (5)
v243
MinorInterventions: Denosumab (Drug), Denosumab (Drug), Denosumab (Drug) to Denosumab (Drug)
Study arms: 0 to 1
v242
NotablePrimary completion date: Mar 15, 2030 to Mar 11, 2026
Secondary endpoints: details revised at 5 of 5 entries
v241
MinorStart date changed from estimate of Jun 20, 2019 to Jun 13, 2019v240
MinorStart date: Jun 19, 2019 to Jun 20, 2019v239
MinorStart date: Jun 18, 2019 to Jun 19, 2019v238
MinorStart date: Jun 17, 2019 to Jun 18, 2019v237
MinorStart date: Jun 14, 2019 to Jun 17, 2019v236
MinorStart date: Jun 13, 2019 to Jun 14, 2019v235
MinorStart date: Jun 12, 2019 to Jun 13, 2019v234
MinorStart date: Jun 11, 2019 to Jun 12, 2019v233
MinorStart date: Jun 10, 2019 to Jun 11, 2019v232
MinorStart date: Jun 7, 2019 to Jun 10, 2019v231
MinorStart date: Jun 6, 2019 to Jun 7, 2019v230
MinorStart date: Jun 5, 2019 to Jun 6, 2019v229
MinorStart date: Jun 4, 2019 to Jun 5, 2019v228
MinorStart date: Jun 3, 2019 to Jun 4, 2019v227
MinorStart date: May 30, 2019 to Jun 3, 2019v226
MinorStart date: May 29, 2019 to May 30, 2019v225
MinorStart date: May 28, 2019 to May 29, 2019v224
MinorStart date: May 27, 2019 to May 28, 2019v223
MinorStart date: May 24, 2019 to May 27, 2019v222
MinorStart date: May 23, 2019 to May 24, 2019v221
MinorStart date: May 22, 2019 to May 23, 2019v220
MinorStart date: May 21, 2019 to May 22, 2019v219
MinorStart date: May 20, 2019 to May 21, 2019v218
MinorStart date: May 17, 2019 to May 20, 2019v217
MinorStart date: May 16, 2019 to May 17, 2019v216
MinorStart date: May 15, 2019 to May 16, 2019v215
MinorStart date: May 14, 2019 to May 15, 2019v214
MinorStart date: May 13, 2019 to May 14, 2019v213
MinorStart date: May 10, 2019 to May 13, 2019v212
MinorStart date: May 9, 2019 to May 10, 2019v211
MinorStart date: May 8, 2019 to May 9, 2019v210
MinorStart date: May 7, 2019 to May 8, 2019
Eligibility criteria shortened, about 1 word
v209
MinorStudy Statusv208
MinorStudy Statusv207
Stopped: an ongoing trial was terminated, suspended or withdrawn.
Notable: the trial’s plan changed such as a big move in its timeline or size, a new primary endpoint, sponsor or phase, or recruiting opened or resumed.
Minor: routine progress and housekeeping, such as sites added or enrollment closed.
Objectives:
The primary objective of this study is to evaluate the effect of denosumab on bone turnover in individuals with fibrous dysplasia (FD). Secondary objectives are to determine the effect of denosumab on bone pain, FD lesion intensity as revealed in 18F-sodium fluoride PET/CT bone scan, and to determine the effect of denosumab discontinuation on bone turnover re-bound after discontinuation.
Study Population:
Up to 14 adult subjects with FD may be enrolled to ensure complete study data on 9 subjects.
Design:
This study is a single center, open label pilot study of once-monthly dosing of denosumab. Subjects will be treated for 6 months, after which they will be followed by an 8-month observation period. A final visit will occur 21 months after denosumab discontinuation. Dosing will be adopted from studies in adults on treatment for giant cell tumors, with denosumab administered at 120 mg per dose every 4 weeks, with loading doses on days 7 and 14 of month 1.
Outcome Measures:
Primary:
Assessment of the effects of denosumab on:
1\. Markers of bone turnover:
Beta-crosslaps C-telopeptides (bone resorption marker)
Procollagen-1-propeptide (bone formation marker)
Secondary:
Assessment of the effects of denosumab on:
1. Bone histomorphometric indices:
Mineralized perimeter
Bone formation rate
Cortical width
Cortical area
Osteoid width
Osteoid perimeter
Mineral apposition rate
2. Surrogate markers of a direct therapeutic effect of denosumab on FD lesions:
Semi-quantitative changes in RANKL, Ki67 (marker of cell proliferation), p16 (marker of cell senescence), and/or apoptosis index before and after treatment, as assessed by immunohistochemistry
Changes in sentinel lesion intensity, measured quantitatively by uptake on 18Fsodium fluoride PET/CT bone scan.
3. FD-related bone pain assessed by the Brief Pain Inventory (Short Form) , a validated self-reporting tool for assessment of pain.
Exploratory Endpoints:
1. Effect of denosumab initiation and discontinuation on
Serum calcium, phosphorus and parathyroid hormone
Serum RANKL and osteoprotegerin (OPG), and RANKL/OPG levels
2. Effect of denosumab discontinuation, as measured by the following outcomes:
Biochemical markers of bone metabolism: beta-crosslaps C-telopeptides, procollagen-1 propeptide, bone specific alkaline phosphatase, osteocalcin, NTX-telopeptides
3. Effect measured by change in other outcome measures, such as:
Bone density assessed by DXA
Physical Medicine and Rehabilitation evaluation