2026-08-04
“The Primary Efficacy Endpoint Was Not Met” — What PISCES-2, Which Implanted Neural Stem Cells into the Brain, Really Left Behind
At eight UK sites, 20 million allogeneic neural stem cells (CTX0E03) were injected into the putamen of 23 stroke patients by stereotactic neurosurgery. The primary endpoint was not met, the randomized trial meant to confirm the findings stopped at 15 patients, and the developer went through administration and delisted. Here is what a single-arm study can and cannot say, read straight from the numbers.
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