Issue |
Med Sci (Paris)
Volume 25, Number 12, Décembre 2009
Anticorps monoclonaux en thérapeutique
|
|
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Page(s) | 1126 - 1129 | |
Section | II - La réalité clinique | |
DOI | https://doi.org/10.1051/medsci/200925121126 | |
Published online | 15 December 2009 |
Anticorps monoclonal anti-C5 (éculizumab) dans l’hémoglobinurie paroxystique nocturne
Eculizumab in paroxysmal nocturnal hemoglobinuria
1
Service d’hématologie-greffe, Inserm U728, Hôpital Saint-Louis, AP-HP, 1, avenue Claude Vellefaux, 75010 Paris, France
2
Alexion Pharma France, Direction des affaires médicales, 56, avenue Hoche, 75008 Paris, France
L’hémoglobinurie paroxystique nocturne est une maladie clonale acquise rare de la cellule souche hématopoïétique, due à une mutation somatique du gène PIG-A et aboutissant à un déficit d’expression de deux protéines membranaires inhibitrices du complément, expliquant l’hémolyse qui domine le tableau clinique. La prise en charge thérapeutique des formes hémolytiques a été bouleversée par le développement d’un anticorps monoclonal, l’éculizumab, dirigé contre la fraction C5 du complément.
Abstract
Paroxysmal nocturnal hemoglobinuria is a rare acquired clonal of the hematopoietic stem cell due to acquired mutation of the PIG-A gene. This results in the lack of two GPI-anchored membrane proteins involved in the inhibition of complement attack, thus explaining red cells hemolysis. The development of an anti-C5 monoclonal antibody (eculizumab) had profoundly modified the treatment of the the hemolytic form of the disease.
© 2009 médecine/sciences - Inserm / SRMS
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