Bisphosphonate Therapy for Osteogenesis Imperfecta
調査の概要
詳細な説明
The study is designed to evaluate the efficacy and safety of "Bisphosphonate Therapy for Osteogenesis Imperfecta (OI)." OI is an inherited disorder of collagen synthesis. Collagen is the major structural protein of the matrix of tendons, skin, and bones. Affected persons have low bone mineral density (and experience multiple fractures and progressive bony deformity). In its most severe form, the disorder is lethal in infancy. We plan to characterize the changes effected by oral bisphosphonate therapy and compare them to a regimen of intravenous bisphosphonate therapy in a group of children with OI.
Additionally, we have begun to treat patients with OI and other conditions of low bone mineralization for age who are not eligible for the standard protocol (too young, history of abdominal pain, etc.) with bisphosphonate. We also plan to screen the parents and siblings of our patients diagnosed with osteogenesis imperfecta, in order to determine if they also have osteoporosis.
研究の種類
入学 (実際)
段階
- フェーズ 4
参加基準
適格基準
就学可能な年齢
健康ボランティアの受け入れ
受講資格のある性別
説明
Inclusion Criteria:
Diagnosis of OI, as defined by genetic analysis revealing a defect of type I collagen, OR by bone mineral density (BMD) <2.5 standard deviations (SD) for age plus two of the following:
- Family history of OI
- Frequent fractures
- Blue sclerae
- Multiple wormian bones on skull x-ray
- Hearing disturbance
- Dentinogenesis imperfecta
- Age between 3 and 21 years at the start of the study period.
- Children must be able to swallow whole tablets
- Parents of children must be able to understand protocol and give informed consent.
Exclusion Criteria:
- Therapy with bisphosphonates during the past 12 months.
- Other "non-traditional" therapy for OI in the last 6 months, such as growth hormone or anabolic steroids.
- Other chronic diseases besides OI that interfere with bone morphology or gastrointestinal absorption
研究計画
研究はどのように設計されていますか?
デザインの詳細
- 主な目的:処理
- 割り当て:ランダム化
- 介入モデル:並列代入
- マスキング:なし(オープンラベル)
武器と介入
参加者グループ / アーム |
介入・治療 |
---|---|
アクティブコンパレータ:Alendronate
1 mg/kg po qd rounded to nearest 10 or 20 mg dose
|
他の名前:
|
アクティブコンパレータ:Pamidronate
3 mg/kg IV q4 months
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この研究は何を測定していますか?
主要な結果の測定
結果測定 |
メジャーの説明 |
時間枠 |
---|---|---|
Bone Mineral Density
時間枠:2 years
|
By Dual-energy x-ray absorptiometry.
Results were reported as z-scores as well as as absolute values.
The Z-score indicates the number of standard deviations away from the mean.
A Z-score of 0 is equal to the mean with negative numbers indicating values lower than the mean and positive values higher.
Higher Z scores indicate a better outcome", or similar, as accurate and appropriate.
|
2 years
|
協力者と研究者
捜査官
- 主任研究者:Linda A DiMeglio, MD, MPH、Indiana University School of Medicine
研究記録日
主要日程の研究
研究開始
一次修了 (実際)
研究の完了 (実際)
試験登録日
最初に提出
QC基準を満たした最初の提出物
最初の投稿 (見積もり)
学習記録の更新
投稿された最後の更新 (実際)
QC基準を満たした最後の更新が送信されました
最終確認日
詳しくは
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