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TOPIC: Mesoblast Reports Solid RA Results

Mesoblast Reports Solid RA Results 16 Feb 2016 06:40 #6404

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NEW YORK and MELBOURNE, Australia, Feb. 16, 2016 (GLOBE NEWSWIRE) -- Mesoblast Limited (ASX:MSB) (MESO) today announced results from the first cohort of its ongoing Phase 2 trial in rheumatoid arthritis (RA) patients who have previously failed one or more biologic agents. Top line results showed that a single intravenous infusion of the lower dose of Mesoblast’s proprietary Mesenchymal Precursor Cell (MPC) product candidate, MPC-300-IV, was safe and resulted in early and sustained clinical responses.

MPC-300-IV (USAN:rexlemestrocel-L) is being evaluated in a double-blind, randomized, placebo-controlled, two-dose escalating trial in the United States. The trial is designed to evaluate safety and explore efficacy of MPC treatment in 48 patients with active RA randomized 2:1 to either placebo or a single intravenous infusion of 1 million or 2 million MPCs/kg. All recruited patients are on a stable regimen of methotrexate and have previously failed or had an adverse or inadequate clinical response to at least one biologic agent.

The lower MPC dose was evaluated in the first cohort of 24 patients, of whom 16 had failed 1-2 biologics. The second cohort of 24 patients, evaluating the higher dose of MPCs, is actively recruiting. Trial results for both cohorts are expected to be reported in Q3 2016.

The trial's primary endpoint is safety, with pre-specified efficacy endpoints at 12 weeks including the American College of Rheumatology (ACR) 20%, 50% and 70% response criteria (ACR20/50/70). ACR20 is a key validated primary endpoint in clinical trials which is accepted by the United States Food and Drug Administration for product approval in RA.

Key top line results for cohort 1 were:

Cell infusions were well tolerated with no cell-related adverse events
The trial’s 12 week, pre-specified ACR20 efficacy endpoint was achieved by 47% of all MPC-treated patients and by 60% of MPC-treated patients who failed 1-2 biologics, vs 25% and 17%, respectively, of matched placebo-treated controls
71% of MPC-treated patients who achieved ACR20 responses did so as early as week 1
At week 12, 27% of MPC-treated patients, but no placebo-treated controls, achieved ACR50 or ACR 70 responses
Remission at week 12, as defined by Disease Activity Score (DAS28/CRP) <2.6, was seen in 20% of MPC-treated patients but in no controls.
In 2014, RA affected over 5.3 million people in the US, Japan, and the five major European markets (EU5), with 2.4 million in the US alone. Major advances using biologic agents in the treatment of RA have substantially increased the market size to $15.7 billion in 2014, with the market expected to grow to $18.4 billion in 2024.

Despite advances in the use of biologic agents, approximately one third of patients either do not sufficiently respond or cannot tolerate these agents. There is a clear need to deliver a safe and effective treatment, without the potential risk of opportunistic infections or malignancies.

Mesoblast Chief Executive Silviu Itescu said: “We are encouraged by the efficacy signals seen in the initial results using the lower dose of Mesoblast’s cell therapy in biologic refractory patients with rheumatoid arthritis. They suggest that a single intravenous administration of our cell therapy may result in rapid and sustained responses in patients with active disease where disease remission remains the clear goal.”

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Mesoblast Reports Solid RA Results 16 Feb 2016 07:06 #6405

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CYTX is now justified to be an exclusive scleorderma company (pus some other orphan indications).

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Mesoblast Reports Solid RA Results 17 Feb 2016 14:51 #6422

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I have been initiating a position in Mesoblast for the last 3 months. 5 phase 3 indications 120 mill in the bank and consistent great results

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Mesoblast Reports Solid RA Results 17 Feb 2016 15:59 #6423

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I think these RA results look very good although p values were lacking. But I thought that the back pain data were overhyped. The biggie for them is the CHF trial.

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Mesoblast Reports Solid RA Results 17 Feb 2016 16:19 #6424

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What an awful performance though... nose diving it like our own little puppy..

Any idea why such a drop over the years?

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Mesoblast Reports Solid RA Results 17 Feb 2016 18:57 #6430

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MESO shares got crushed when they came to the U.S. late last year to raise capital and get a U.S. listing. Although this RA data looked strong, the degenerative disk data was weak, IMHO. Furthermore, a short seller ripped into them on their heart data among other things in a SA report within the last few months. Athersys has a big manufacturing advantage over MESO.

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