The next morning (Day 6), eligible patients received G-CSF (10 µg/kg) and began apheresis approximately 10 to 11 hours after the previous evening plerixafor dose. If the apheresis yield was at least double the apheresis yield on Day 5, then the patient received another 10:00 pm dose of plerixafor and underwent apheresis again the next morning (Day 7) after receiving G-CSF. The evening dose of plerixafor followed the next morning by G-CSF and apheresis was repeated for up to a total of 3 days of apheresis or until ≥5*10^6 cells/kg were collected.