Mesoblast, FDA Agree on Smaller Phase 3 Trial

Share
Mesoblast Ltd. says FDA has agreed to a smaller patient enrollment target for a Phase 3 trial involving MPC-150-IM in chronic heart failure (CHF), which should shorten the time to trial completion. The agreement follows a meeting last month between Mesoblast’s development and commercial partner, Teva Pharmaceutical Industries, and FDA that proposes a change in the trial’s primary endpoint.



 

According to Mesoblast, the ongoing Phase 3 program is planned to be optimized as follows:FDA has agreed to a reduction in the current Phase 3 trial size from 1,165 to about 600 patients due to a proposed change in the primary endpoint The revised primary endpoint will be a comparison of recurrent heart failure-related major adverse cardiovascular events (HF-MACE) between patients treated with MPC-150-IM and controls  The proposed use of recurrent HF-MACE as a primary endpoint in the Phase 3 trial is based on the fact that a single injection of MPC-150-IM successfully prevented recurrent HF-MACE over three years in a Phase 2 trialA second confirmatory study will be conducted in parallel in an identical patient population of about 600 subjects using the same primary endpoint.



The company notes that in the completed Phase 2 trial, patients treated with MPC-150-IM had no HF-MACE over 36 months of follow-up, compared with 11 HF-MACE events in the control group. “In patients with advanced heart failure as defined by baseline Left Ventricular Systolic Volume >100ml, who closely resemble the patients being recruited in the Phase 3 trial, 71% of controls had at least one HF-MACE event vs 0 of those who received a single injection of MPC-150-IM  (p<0.001),” it says.

Read more