Treatment of paroxysmal nocturnal hemoglobinuria patients by...

A - Human Necessities – 61 – K

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A61K 31/7105 (2006.01) A61K 38/00 (2006.01) A61K 39/395 (2006.01) A61P 7/06 (2006.01)

Patent

CA 2645810

Eculizumab, a humanized monoclonal antibody against C5 that inhibits terminal complement activation, showed activity in a preliminary 12-week open-label trial in a small cohort of patients with paroxysmal nocturnal hemoglobinuria (PNH). The present study examined whether chronic eculizumab therapy could reduce intravascular hemolysis, stabilize hemoglobin levels, reduce transfusion requirements, and improve quality of life in a double-blind, randomized, placebo-controlled, multi-center global Phase III trial. It has been found that eculizumab stabilized hemoglobin levels, decreased the need for transfusions, and improved quality of life in PNH patients via reduced intravascular hemolysis. Chronic eculizumab treatment appears to be a safe and effective therapy for PNH.

L'invention concerne l'eculizumab, un anticorps monoclonal humanisé contre C5 qui inhibe l'activation des composants terminaux du complément, qui a présenté une activité lors d'un essai ouvert préliminaire de 12 semaines sur une petite cohorte de patients souffrant d'hémoglobinurie paroxystique nocturne (HPN). La présente étude a examiné si une thérapie chronique d'eculizumab pourrait réduire l'hémolyse intravasculaire, stabiliser les niveaux d'hémoglobine, réduire les besoins de transfusion et améliorer la qualité de vie, lors d'essais de phase III à double insu, aléatoires, contrôlés par placebo et multicentriques. Il a été observé que l'eculizumab stabilise les niveaux d'hémoglobine, diminue le besoin de transfusions et améliore la qualité de vie chez des patients souffrant de HPN, via une hémolyse intravasculaire réduite. Un traitement chronique à l'eculizumab semble être une thérapie sûre et efficace pour l'HPN.

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