Overview Extension Study of IMO-8400 in Patients With Waldenström's Macroglobulinemia Who Completed Study 8400-401 Status: Completed Trial end date: 2016-12-01 Target enrollment: Participant gender: Summary An extension study for patients who complete 24 weeks of IMO-8400 on study 8400-401. Phase: Phase 1/Phase 2 Details Lead Sponsor: Idera Pharmaceuticals, Inc.