抵抗性の乳児血管腫に対する経口プロプラノロールの高用量投与
Isabelle Dreyfus1, Charlène Dénos2, Olivia Boccara3
1Reference Center for rare diseases of the skin, CHU Toulouse Larrey, Toulouse, France. dreyfus.i@chu-toulouse.fr.
Acta dermato-venereologica
|January 23, 2026
まとめ
高用量のプロプラノロールは、プロプラノロール抵抗性乳児血管腫(PRIH)に有望である。用量の増加(> 3 mg/kg/日)はPRIH症例の40%で有効であり、良好な忍容性が観察された。
科学分野:
- 皮膚科
- 小児科
- 薬理学
背景:
- 乳児血管腫(IH)は乳児に一般的な良性血管腫瘍である。
- プロプラノロールは第一選択治療であるが、一部の症例は抵抗性(PRIH)である。
- PRIHの管理は臨床的な課題のままである。
研究 の 目的:
- PRIHのパターンを調査する。
- 高用量プロプラノロール(> 3 mg/kg/日)の有効性と安全性を評価する。
- プロプラノロール増量に対する反応の予測因子を特定する。
主な方法:
- 全国多施設共同後ろ向き観察研究。
- プロプラノロール > 3 mg/kg/日を投与されたPRIH患者の組み入れ。
- 治療パターン、反応率、忍容性、および予測因子の分析。
主要な成果:
- PRIH患者15例(有病率0.45%)を含め、主に大規模病変を有する女性が対象となった。
- 顔面表在型(47%)、顔面局所型(皮下成分あり)(40%)、体幹部混合型/潰瘍型(13%)の3つのPRIHパターンが特定された。
- 高用量プロプラノロール(3.75~4 mg/kg/日)に対し40%のPRIHが反応を示し、重度の低血圧の1例を除き良好な忍容性が認められた。
結論:
- 高用量プロプラノロール(> 3 mg/kg/日)は、PRIHの潜在的な治療選択肢となる。
- 反応の予測因子には、特定のIH分類および先行治療期間が含まれる。
- PRIHの治療戦略を最適化するため、さらなる研究が必要である。
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