早期の閉経後の脆弱性骨折と上昇したIgE:ハイパーIgE症候群とRomosozumabに対する新しい副作用を示唆する2つの症例
Lucy Collins1,2,3, Peter R Ebeling4,5
1Department of Medicine, School of Clinical Sciences, Monash University, Melbourne, Victoria, Australia. lucy.collins@monash.edu.
Calcified tissue international
|August 30, 2025
まとめ
重度の骨粗鬆症は,希少なハイパーIgE症候群 (HIES),すなわち一次性免疫不全を示唆する可能性があります. 二次的な原因の迅速な評価は,特に標準的な治療が失敗したり,異常な反応が発生した場合に重要です.
科学分野:
- 免疫学
- 内分泌学
- リウマトロジ
背景:
- 重症で治療に抵抗する骨粗鬆症は,二次的な原因を調査する必要があります.
- ハイパーIgE症候群 (HIES) は,骨粗鬆症を含む骨格異常に関連したまれな一次性免疫不全です.
- 血清IgEレベルが上昇することは,HIESの特徴です.
研究 の 目的:
- IgE値が上昇した早期の閉経後の女性における重度の骨粗鬆症の2例を提示する.
- 耐性骨粗鬆症における HIESの重要性を強調する.
- 免疫不調の可能性のある患者のロモゾズマブに対する新しい副作用を報告する.
主な方法:
- 重度の骨粗鬆症とIgE値上昇を患った2人の閉経後の女性の症例報告
- 臨床表現,治療反応,および有害事象のレビュー
- 骨のミネラル密度と骨折負担の評価
主要な成果:
- 2人の患者は重度の骨粗鬆症で,HIESを示唆するIgEレベルが顕著に上昇した.
- 標準的な骨粗鬆症の治療にも関わらず 複数の骨粗鬆症の骨折を経験しました
- ケース2は,ビスホスフォネートに対する反応が弱く,ロモゾズマブに対する重度の皮膚反応を発症した.
結論:
- 重度の骨粗鬆症は HIESのような二次的な原因を評価する必要があります.
- この発見は,複雑な骨粗鬆症の症例における総合的な診断アプローチの必要性を強調しています.
- 症例2におけるロモゾズマブに対する新しい皮膚反応は,免疫機能の調節不全の患者での使用について懸念を喚起しています.
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