Hémopathies malignes héréditaires : une perspective canadienne
Résumé
Lorsqu’un patient vient de recevoir le diagnostic d’une tumeur maligne, il se pose souvent deux questions : 1) pourquoi ai-je ce cancer? et 2) mes enfants ou d’autres membres de ma famille sont-ils à risque? Dans le cas des hémopathies malignes, la réponse habituelle est que la cause est inconnue et que les membres de la famille ne sont pas exposés à un risque accru. La prédisposition héréditaire aux hémopathies malignes, en particulier aux hémopathies malignes myéloïdes, est cependant de plus en plus reconnue. Il est donc nécessaire d’apporter un changement à ce dogme. Les hémopathies malignes héréditaires ne sont pas aussi rares qu’on le croyait et on découvre un nombre toujours croissant de gènes et d’allèles de prédisposition. Depuis la découverte initiale du syndrome d’anomalies plaquettaires familiales (APF) avec prédisposition aux tumeurs malignes myéloïdes associées, dû à la mutation germinale délétère de RUNX1 en 1999, la liste des gènes de prédisposition, tels que CEBPA, DDX41, ETV6, GATA2 et d’autres, ne cesse de s’allonger.
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© Actualité hématologique au Canada 2022

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