Methods and kits for diagnosis and/or prognosis of the...

C - Chemistry – Metallurgy – 12 – Q

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C12Q 1/68 (2006.01) G01N 33/53 (2006.01)

Patent

CA 2674211

The long-term survival of transplanted grafts critically depends on the life-long administration of immunosuppressive drugs to prevent graft rejection. These drugs are very effective at preventing graft rejection, but they are also associated with severe side effects. Inventors have selected a set of genes whose expression characterizes the tolerant state in liver transplantation in humans. Based on the expression level profile of this set of genes, inventors provide a non-invasive method to assess diagnosis and/or prognosis of the tolerant state in liver transplantation in humans, and kits to perform it. These kits are simpler and cheaper than others based on a great number of genes, such as commercial microarrays with thousands of probes.

La survie à long terme des greffons transplantés dépend de manière critique de l'administration à vie d'immunosuppresseurs permettant de prévenir le rejet du greffon. Les médicaments immunosuppresseurs permettent de prévenir le rejet avec une grande efficacité, mais ils sont aussi associés à de sévères effets secondaires. Selon l'invention, un groupe de gènes ont été choisis dont l'expression caractérise l'état de tolérance de la transplantation du foie chez les humains. L'invention concerne un procédé fondé sur le profil du niveau d'expression de ce groupe de gènes, procédé non invasif qui permet d'évaluer le diagnostic et/ou le pronostic de l'état de tolérance dans les transplantations du foie chez l'humain. L'invention se rapporte aussi à des trousses permettant la mise en oeuvre du procédé. Les trousses de l'invention sont plus simples et meilleur marché que d'autres trousses qui font appel à un grand nombre de gènes, telles que les micropuces commerciales comprenant des milliers de sondes.

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