SC Adult ≥18 yr Wkly dosing schedule: Step-up phase: 0.01 mg/kg on day 1; 0.06 mg/kg on day 3, may be administered between 2-4 days after the previous dose & may be given up to 7 days after the previous dose; 0.4 mg/kg on day 5, may be administered between 2-4 days after the previous dose & may be given up to 7 days after the previous dose. Treatment phase: 0.4 mg/kg wkly thereafter, maintain a min of 6 days between wkly doses. Biwkly dosing schedule: Step-up phase: 0.01 mg/kg on day 1; 0.06 mg/kg on day 3, may be administered between 2-4 days after the previous dose & may be given up to 7 days after the previous dose; 0.4 mg/kg on day 5, may be administered between 2-4 days after the previous dose & may be given up to 7 days after the previous dose; 0.8 mg/kg on day 7, may be administered between 2-4 days after the previous dose & may be given up to 7 days after the previous dose. Treatment phase: 0.8 mg/kg once every 2 wk thereafter, maintain a min of 12 days between biwkly doses.