Publication date: Available online 11 June 2018
Source:Annales de Dermatologie et de Vénéréologie
Author(s): J. Krygier, G. Leemans, R. Forsyth, A. de Becker, J. Gutermuth, M. Grosber
IntroductionLe pityriasis rubra pilaire (PRP) est un syndrome cutané d'étiologie inconnue dont la plupart des cas sont sporadiques et acquis. Nous rapportons un cinquième cas d'éruption de type PRP associée au ponatinib, un inhibiteur de tyrosine kinase (ITK).ObservationUne femme de 60ans se présentait à la consultation de dermatologie pour une éruption érythémato-squameuse évoluant depuis 2 semaines. La patiente était également suivie en hématologie pour une récidive de leucémie lymphoblastique aiguë. Un traitement par ponatinib avait été débuté 6 semaines plus tôt. Malgré l'aspect peu spécifique de l'histologie cutanée, le diagnostic d'éruption de type PRP induit était posé face à l'image clinique caractéristique. Le traitement par corticoïdes locaux permettait la résolution de l'éruption.DiscussionLa littérature rapporte six cas d'éruption de type PRP associés à la prise d'ITK, dont quatre avec le ponatinib. L'éruption survient dans un délai variant de 2 semaines à 3 mois après le début du traitement. Les corticoïdes locaux prescrits ont donné des résultats mitigés. Une meilleure compréhension de la physiopathologie de ces éruptions associées aux ITK pourrait éclairer les mécanismes pathogéniques du PRP idiopathique.BackgroundPityriasis rubra pilaris (PRP) is a cutaneous syndrome of unknown origin. Most cases are sporadic and acquired. Herein we report a fifth case of PRP-like eruption associated with ponatinib, a tyrosine kinase inhibitor (TKI).Patients and methodsA 60-year-old woman presented at the dermatology department with an erythemato-squamous eruption present for 2weeks. The patient was also being treated in haematology for recurrence of acute lymphoblastic leukaemia. Treatment with ponatinib had been initiated 6weeks earlier. Despite the low specific cutaneous histology, a diagnosis of induced PRP-like eruption was made based on the characteristic clinical aspect. Treatment with local corticosteroids resolved the eruption.DiscussionThe literature contains 6 reported cases of PRP-like eruptions associated with TKI, including 4 with ponatinib. The eruption began from 2weeks to 2–3 months after treatment induction. Prescribed topical corticosteroids have yielded mixed results. A better understanding of the physiopathology of these eruptions associated with TKI could shed light on the pathogenic mechanisms in relation to idiopathic PRP.
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Αλέξανδρος Γ. Σφακιανάκης
ΩτοΡινοΛαρυγγολόγος
Αναπαύσεως 5
Άγιος Νικόλαος Κρήτη 72100
2841026182
6032607174
Τρίτη 12 Ιουνίου 2018
Un nouveau cas d’éruption de type pityriasis rubra pilaire associée à l’inhibiteur de tyrosine kinase ponatinib
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