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     <dc:title xml:lang="fr">Impact de l'exposition aux bêta-bloquants sur le pronostic des patients atteints de mélanome : une étude de cohorte</dc:title>
     <dcterms:alternative xml:lang="en">Impact of beta-blockers exposure on the prognosis of melanoma: a cohort study</dcterms:alternative>
     <dc:subject xml:lang="fr">Bêtabloquants</dc:subject><dc:subject xml:lang="fr">Mélanome</dc:subject><dc:subject xml:lang="fr">Pronostic</dc:subject>
     <dc:subject xml:lang="en">Adrenergic beta-antagonists</dc:subject><dc:subject xml:lang="en">Melanoma</dc:subject><dc:subject xml:lang="en">Prognosis</dc:subject>
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						<tef:elementdEntree autoriteSource="Sudoc" autoriteExterne="027793109">Bêta-bloquants</tef:elementdEntree>
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						<tef:elementdEntree autoriteSource="Sudoc" autoriteExterne="02723925X">Mélanome</tef:elementdEntree>
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     <dcterms:abstract xml:lang="fr">Introduction : Des études précliniques sur les modèles murins de mélanomes suggèrent que les bêta-bloquants (BB) ont un effet anti-tumoral, et les études cliniques sur l’effet protecteur des bêta-bloquants montrent des résultats contradictoires. Nous avons étudié l'impact de l'exposition aux bêta-bloquants sur le pronostic au sein d’une cohorte de mélanomes stade II. Matériel et Méthodes : 181 patients atteints de mélanome de stade II ayant un Breslow&gt;2mm ont été inclus. Les informations ont été recueillies à partir de la base de données régionale. L’exposition et les rechutes ont été recueillis auprès des médecins traitants. Le critère de jugement principal était la survie globale, le critère secondaire la survie sans récidive, analysés avec un modèle de Cox. Résultats : : 21 patients (13%) ont été traités par BB avant le diagnostic de mélanome (tableau 1). Le suivi médian était de 4,7 ans. L'utilisation des BB n'était pas associée à une meilleure survie globale (Hazard ratio (HR) ajusté 0,49 IC 95 %[0,20-1,22] p=0,125). Après constatation d’une interaction entre l'exposition aux BB et le genre, nous avons effectué une analyse distincte selon le genre. L’exposition aux BB était associée à une meilleure survie globale chez les hommes (0,31 95 % IC[0,10-0,96]) mais pas chez les femmes (1,18 95 % IC [0,25-5,65]). Conclusion : Nous rapportons une association significative entre l'utilisation des BB et la survie globale chez les patients masculins atteints de mélanome de stade II et de Breslow &gt;2mm. Au vu de la diversité des résultats des études cliniques et de leur bonne tolérance, l’utilisation de BB non cardiosélectifs pourrait être étudiée dans un essai thérapeutique adjuvant.
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     <dcterms:abstract xml:lang="en">Background: Preclinical studies on murine melanoma models suggest that beta-blockers (BB) have an anti-tumor effect, and clinical studies on the protective effect of beta-blockers show conflicting results. We studied the impact of beta-blocker exposure on prognosis in a stage II melanoma cohort. Methods: 181 stage II melanoma patients with Breslow&gt;2mm were included. Information was collected from the regional database. Exposure and relapse were collected from general practitioners . The primary endpoint was overall survival, the secondary endpoint was relapse-free survival, analyzed with a Cox model. Results: 21 patients (13%) were treated with BB before the diagnosis of melanoma (Table 1). The median follow-up was 4.7 years. BB use was not associated with improved overall survival (adjusted Hazard ratio (HR) 0.49 95% CI [0.20-1.22] p=0.125). After finding an interaction between BB exposure and gender, we conducted a separate analysis according to gender. BB exposure was associated with better overall survival in men (0.31% 95% CI [0.10-0.96]) but not in women (1.18% 95% CI [0.25-5.65]). Conclusion: We report a significant association between BB use and overall survival in male patients with stage II melanoma and Breslow &gt;2mm. In view of the diversity of clinical trial results and their good safety, the use of non- cardioselective BB could be studied in an randomized adjuvant therapeutic trial.</dcterms:abstract>
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