Pharmaceutical compositions comprising estetrol derivatives...

A - Human Necessities – 61 – K

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A61K 31/565 (2006.01) A61K 31/352 (2006.01) A61P 35/00 (2006.01)

Patent

CA 2503549

The present invention relates to a method of treating or preventing estrogen- suppressed tumours in a mammal, said method comprising the administration of a therapeutically effective amount of an estrogenic component to said mammal, wherein the estrogenic component is selected from the group consisting of: substances represented by the following formula (I) in which formula R1, R2, R3, R4, independently are a hydrogen atom, a hydroxyl group or an alkoxy group with 1-5 carbon atoms; precursors capable of liberating a substance according to the aforementioned formula when used in the present method; and mixtures of one or more of the aforementioned substances and/or precursors. The estrogenic component according to the invention is particularly useful in the treatment or prevention of colorectal and prostate cancer and, unlike commonly used estrogens, does not simultaneously enhance the risk of estrogen-stimulated cancers such as breast cancer.

L'invention concerne une méthode de traitement ou de prévention de tumeurs supprimées par les oestrogènes chez un mammifère, qui consiste à administrer une dose thérapeutiquement efficace d'un composant oestrogénique au mammifère, ce composant oestrogénique étant sélectionné dans le groupe comprenant: des substances de formule générale (I) dans laquelle R¿1?, R¿2?, R¿3?, R¿4?, sont indépendamment un atome d'hydrogène, un groupe hydroxyle ou un groupe alcoxy possédant entre 1 et 5 atomes de carbone; des précurseurs pouvant libérer une substance de formule susmentionnée lorsqu'ils sont utilisés dans cette méthode; et des mélanges d'un ou de plusieurs des substances et/ou précurseurs susmentionnés. Le composant oestrogénique de l'invention s'avère particulièrement utile dans le traitement ou la prévention du cancer colorectal et du cancer de la prostate, et à la différence d'oestrogènes communément utilisés, n'augmente pas simultanément le risque de cancers stimulés par les oestrogènes de type cancer du sein.

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