IFN-BETA COMPOSITIONS, PREPARATION METHODS AND USES THEREOF

摘要

The present invention pertains to interferon-beta (IFN-beta) compositions comprising interferon-beta and a grafted poly(glutamic acid) polymer having an average molecular weight between 26 000 and 40 000 g/mol, grafted with alpha-tocopherol substituants, the average molar grafting ratio being 4.5 - 5.5 moles %, the weight/weight ratio between said grafted poly(glutamic acid) polymer and IFN-beta being between 24 and 125. The present invention also pertains to the preparation methods of such compositions and their application to obtain therapeutic compositions in dosage unit form delivering IFN-beta over an extended period of time.