A Study of Belimumab in Treating Symptomatic Waldenstroms Macroglobulinaemia

"The first cycle of Belimumab (10mg/kg by intravenous (IV) infusion) is a loading cycle of 3 doses over 28 days (days 1, 15, 29). After the first cycle, additional cycles of belimumab (10mg/kg by intravenous (IV) infusion) will be administered every 28 ± 1 days (cycle 2 and all subsequent cycles).~The infusion will be administered over a minimum period of 1 hour."