Conditions: Sporadic Inclusion Body Myositis (sIBM)
Keywords: Inclusion Body Myositis (IBM)
Allocation: NA | Intervention model: SINGLE_GROUP
Enrollment: 10
Healthy volunteers: no

Brief summary:
This study is an open-label, long-term study for those patients who participated in the prior proof-of-concept protocol, in which the preliminary efficacy for BYM338 in patients with sIBM was demonstrated after a single 30 mg/kg i.v. dose of BYM338. This study is designed to confirm the efficacy, safety and tolerability of BYM338 in sIBM with long-term dosing. However due to lack of efficacy in patients with sIBM, the study was terminated early.

Detailed description:
This is a non-confirmatory, multicenter, open-label, non-randomized trial which will extend active treatment to those patients that participated in the preceding proof-of-concept study (CBYM338X2205) in order to collect long-term safety and tolerability data. Up to 14 patients with sIBM will be invited to enroll into the study to receive BYM338 open-label for a period of approximately 3 years or until BYM338 is commercially available, whichever comes first. The study consists of a maximum 28-day screening period, a 5-day baseline period, and a treatment period consisting of the site visits at 4-week intervals for treatment administration, safety and pharmacokinetic follow-up. All patients will be administered a medium level i.v. BYM338 dose regardless of their treatment allocation in the prior study.

Arms:
arm 1: BYM338 Group

Interventions: intervention 1: BYM338 (Bimagrumab)
Intervention descriptions: intervention 1: None

Protocol document: