Phase IIa Study Evaluating Safety and Efficacy of BL-8040 in Relapsed/Refractory AML Patients

Open-label, multicenter, Phase IIa, dose escalating study in subjects with relapsed/refractory AML, defined according to WHO criteria, including subjects who failed chemotherapy only and those who failed previous Autologous Stem Cell Transplantation (ASCT)/ Allogeneic Stem Cell Transplantation (AlloSCT), provided at least 6 months have passed from transplant. Eligible subjects will receive subcutaneous (SC) injections of BL-8040 ("monotherapy period") over two days (one injection per day) followed by concurrent administration of BL-8040 with standard salvage chemotherapy ("combined period") over 5 days. During the "combined period," BL-8040 will be administered 4 hours prior to chemotherapy. The chemotherapy will consist of cytarabine (Ara-C) 1.5 or 3 g/m2/d per dose (based on age), administered intravenously (IV) over 3 hours, for 5 days and will not be escalated. The first part of the study (Part 1) will include escalating dose groups and be considered the 'escalation phase'. Six potential dose levels will be investigated starting at dose level 1. Patients will be accrued in a conventional 3+3 design. Applying this study design, the first cohort of 3 patients will be treated at dose level 1 and evaluated for dose escalation. At the discretion of the Sponsor, additional subjects may be enrolled into a selected dose group to confirm safety and efficacy for selected dose. the portion of this study is considered expansion phase.