- Part 1: This lead-in period designed to ascertain the dose of BL-8040 will enroll a total of up to 30 subjects to an open labeled treatment to assess the efficacy, safety, PK and PD parameters of treatment with G-CSF 10 µg/kg/day and BL-8040 1.25mg/kg, per study protocol to goal collection of ≥ 6x106 CD34+ cells/kg.