Pluristem Therapeutics (PSTI) Completes Patient Enrollment in Phase I Hematology Study Evaluating PLX-R18

Pluristem Therapeutics Inc. (NASDAQ: PSTI) announced today it has completed patient enrollment in its Phase I study evaluating PLX-R18 as a treatment for incomplete hematopoietic recovery following hematopoietic cell transplantation (HCT), in the U.S. and in Israel.

Incomplete hematopoietic recovery poses a significant risk to HCT recipients who fail to respond to standard of care treatments, making them vulnerable to infections and bleeding. PLX-R18 may address the unmet need in this patient population by stimulating the regenerative potential of bone marrow where other treatments have proven ineffective. The U.S. Food and Drug Administration (FDA) has granted Orphan Drug Designation to PLX-R18 in this indication.

The Phase I multi-center, open-label, 3 cohort dose-escalating study is evaluating the safety of intramuscular (IM) injections of PLX-R18 cells in 20 subjects, with incomplete hematopoietic recovery persisting for at least 3 months after HCT. The follow up period is 12 months. Safety is the primary endpoint, with efficacy endpoints including changes in white blood cells, platelets counts, hemoglobin levels, changes in blood products requirements, and changes in quality of life. As previously reported, Pluristem expects to announce top line efficacy results during the first quarter of calendar year 2021.

“We are glad to meet an additional important clinical milestone that keeps us on track for our expected time to readout, and is one of four data readouts we expect to announce in the coming twelve months. We look forward to seeing data that may position PLX-R18 as an important drug candidate for hematological disorders. We would like to thank the medical teams across the clinical sites supporting our program in the most professional and caring way,” stated Pluristem CEO and President, Yaky Yanay.

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