パラドックスな皮膚反応: パルモプランタール・プストゥルーロシスにおけるセキュキヌマブ関連PLEVA

¹Department of Dermatology, Shenzhen People's Hospital (The First Affiliated Hospital, Southern University of Science and Technology; The Second Clinical Medical College, Jinan University), Shenzhen, 518020, People's Republic of China.

|February 19, 2026

まとめ

Palmoplantar pustulosis (PPP) の患者は,IL-17阻害剤で治療すると,ピトリアシス・リケノイドス・エット・ヴァリオリフォームス・アキュタ (PLEVA) のような皮質反応を発症することがあります. JAK阻害剤であるトファシチニブは,報告されたケースで両方の状態を効果的に治療しました.

科学分野:

皮膚科皮膚科について
免疫学免疫学とは
薬理学薬理学とは

背景:

パルモプランタルプストゥロシス (PPP) は,慢性炎症性皮膚疾患である.
セキュキヌマブなどのインタールイウキン-17 (IL-17) 阻害剤は,PPPの一般的な治療法です.
生物学的治療に対する皮質の矛盾した反応は,新たな懸念となっている.

研究の目的:

PPP患者のIL-17阻害に対するパラドックスな反応として,ピトリアシス・リケノイドス・エット・ヴァリオリフォームス・アクタ (PLEVA) の症例を報告する.
PPPとパラドックスなPLEVAの両方を管理するジャヌスキナーゼ (JAK) 阻害剤の有効性を評価する.

主な方法:

PPPを患った25歳の女性患者は,セクキンウムアブで治療を受けた.
患者は急性PLEVA発疹を発症し,生検で確認されました.
治療はトファシチニブ (JAK阻害剤) に切り替えられました.

主要な成果:

患者は,セキュキヌマブ療法の6週間後に急性PLEVAとして表れるパラドックスな皮膚反応を経験しました.
トファシチニブへの切り替えは,元のPPPとパラドックスなPLEVA発作の両方の有意な改善をもたらしました.
バイオプシーは,PLEVA.の診断を確認した.

結論:

Pityriasis lichenoides et varioliformis acuta (PLEVA) は,IL-17阻害療法に対する珍しい矛盾した反応である可能性があります.
トファシチニブのようなジャヌスキナーゼ (JAK) 阻害剤は,このようなパラドックスな反応を経験する患者にとって効果的な治療の代替案を提示する可能性があります.

キーワード:

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