Genmab — Maj 2014
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jeg fandt selv svar. SAR tester også 20 mg. så mon ikke vi får data der til ASCO også
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EMA udsender som regel meeting hoghlights dagen efter mødets sidste dag, så HVIS der er besluttet noget endeligt, er i morgen en mulighed, men highluights omfatter jo ikke alt. Så vidt jeg kan se, så sker det dog tit, at de over flere gange udbeder sig flere oplysninger, så vi får se.
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Hm. Jeg læste det først som kritisk i forhold til Gazyva, men det hedder i ibrutinib studiet: The design of combined treatment schedules with these kinase inhibitors and anti-CD20 antibodies should therefore consider the multiple negative interactions between these two classes of agents.
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men gentogen er det ikke fordi de har testet med Ritxuan og Gazyva. De angriber begge ADCC ligesom Kinaserne og vil nok få negative interactions hvorimod Arzerra's CDC killing vil lave fortærskning til kombinationen
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http://bloodjournal.org/content/123/12/1957?rss=1&variant=short jo det er Ibrutinibs blokering af ADCC, der er problemet
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I har nok ret, men det er skrevet, så jeg ikke helt forstår det http://files.shareholder.com/downloads/AMDA-KPIBN/3189490857x0x757121/F224E13F-4143-4E97-B339-D03AD9E14257/EHA2014-Ofatumumab-Ibrutinib-Prelinical-DaRoit.pdf
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Genmab har lagt alle abstracts på hjemmesiden nu http://ir.genmab.com/downloads.cfm
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The combination of ibrutinib with type II CD20 mAbs does not lead to enhanced direct
cytotoxicity in vitro. In contrast, it inhibits all cell-mediated cytotoxic mechanisms of action of CD20 antibodies and
has minor effects on CDC. Idelalisib has similar, albeit weaker, inhibitory activity on the cell-mediated effector
mechanisms of CD20 mAbs. The design of combined treatment schedules with these kinase inhibitors and anti-
CD20 antibodies should therefore consider the multiple negative interacti -
Key Findings:
• GA101 activates ADCC in cultured human B-cell cancer cells using human
PBMCs or an engineered cell line that expresses FcγRIIIa (Report 1025241,
reviewed below). The ADCC activity is greater in side-by-side comparisons with
rituximab but the magnitude of differences varies with the concentrations of
mAbs used. The addition of nonspecific human IgGs reduces the ADCC
activated by either GA101 or rituximab. -
• The ability of GA101, rituximab and ofatumumab to activate ADCP was
compared using M1 and M2c macrophages generated from human monocytederived
macrophages.14 No significant differences were observed between the
three antibodies with respect to ADCP, in the presence or absence of competing
endogenous human IgGs.
• GA101 binds to either FcγRIIIa 158V/F variant with greater affinity than rituximab
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