MOR10 is an anti-GM-CSF MAB like
mavrilimumab, but didn’t show up at the EULAR 2014 Meeting in Paris. I wonder
why! Earlier this year there had been a phase 1b/2a study; link: http://www.ncbi.nlm.nih.gov/pubmed/24534756.
At the ACR 2012 Meeting in Washington MOR103 showed up with a late breaking poster (Trial Registration Number NCT01023256). Frank Behrens and colleagues presented a poster with the title
(Abstract No. L11): “First in Patient Study of Anti-GM-CSF Monoclonal Antibody
(MOR103) in Active Rheumatoid Arthritis: Results of a Phase 1b/2a Randomized,
Double-Blind, Placebo-Controlled Trial”.
Nothing at the EULAR 2013 Meeting
in Madrid and nothing at the ACR 2013 Meeting in San Diego. Now nothing again.
So how fits this study in?
F. Behrens and colleagues
published in Ann Rheum Dis. 2014, Feb. 17 (doi:
10.1136/annrheumdis-2013-204816) this study: "MOR103,
a human monoclonal antibody to granulocyte-macrophage colony-stimulating
factor, in the treatment of patients with moderate rheumatoid arthritis:
results of a phase Ib/IIa randomised, double-blind, placebo-controlled,
dose-escalation trial." Out of the 96 randomised and treated subjects, 85
completed the trial. The objectives were to determine the safety, tolerability
and signs of efficacy of MOR103. Conclusions:
"MOR103 was well tolerated and showed preliminary evidence of
efficacy in patients with active RA. The data support further investigation of
this monoclonal antibody to GM-CSF in RA patients and potentially in those with
other immune-mediated inflammatory diseases." It has of course been the
study that has been presented almost two years ago (Trial Registration
Number NCT01023256).
Maybe I hear the grass grow and
maybe it's just that recruiting proves to be difficult, but not showing up at
any of the important meetings makes me think. So we have to wait, until "further
investigation" has been done.
Good luck for a new mode of action
drug, but keep us informed. See you at the next meeting!
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