CTI Gets Accelerated Approval Pathway for Pacritinib in Thrombocytopenia

CTI BioPharma Corp. (Nasdaq: CTIC) today announced that following a meeting with the U.S. Food and Drug Administration (“FDA” or “the Agency”), CTI has reached agreement on an accelerated approval pathway for pacritinib for the treatment of myelofibrosis patients with severe thrombocytopenia (platelet counts <50,000/µL).  CTI will be amending the PACIFICA pivotal Phase 3 trial protocol to allow for the primary analysis of SVR rates on the first 168 patients, with an end-of-study analysis of TSS and OS following the full enrollment of 348 patients. If the primary endpoint of SVR is met following the planned review of data from the first 168 patients, CTI intends to submit a New Drug Application (NDA) under the FDA’s subpart H regulations, subject to review of all available efficacy and safety data. Conversion to a regular approval of pacritinib would be anticipated following the successful end-of-study assessment of the secondary efficacy endpoints, and the completion of post-marketing requirements.

“Since the initiation of the PACIFICA trial in September 2019, we have been working diligently with the FDA to identify an expedited approval pathway for pacritinib for the treatment of myelofibrosis patients with severe thrombocytopenia,” said Adam R. Craig, M.D., Ph.D., President and Chief Executive Officer of CTI Biopharma. “Severely thrombocytopenic myelofibrosis patients (platelet counts <50,000/µL) have reduced survival and very limited therapeutic options. Pacritinib has now demonstrated clinical benefit in this population in three clinical trials, including two prior randomized Phase 3 studies, so we believe that pacritinib has the potential to change the treatment paradigm in this area of serious unmet medical need.”
Based on the new trial design, CTI expects to report primary SVR data by the end of 2021, with a potential NDA filing in early 2022 if the SVR data is positive. Final study efficacy data is expected in 2023.
Concurrent with this press release, CTI is announcing a $60 million rights offering. For further details, see the concurrent press release relating to the rights offering.
https://www.biospace.com/article/releases/cti-biopharma-establishes-accelerated-approval-pathway-for-pacritinib-in-treating-myelofibrosis-patients-with-severe-thrombocytopenia/