The screening visit will occur within 42 days prior to the administration of the study drug. Total length of the treatment period is 6 weeks. The treatment period is divided in two phases: the loading phase, in which participants will receive the study drug every other day for 9 days (Days 1, 3, 5 , 7 and 9); thereafter subjects will enter the maintenance phase, where dosing will occur once weekly for four weeks (Days 14, 21, 28, 35 and 42). To ensure safety, subjects will be followed for approximately 5 months post the last dose of study drug.