A Study to Evaluate the Efficacy and Safety of DNTH103 in Adults With Chronic Inflammatory Demyelinating Polyneuropathy (CAPTIVATE)

The study includes the following periods: * Part A: An open-label period (up to 13 weeks) * Part B: A randomized, placebo-controlled, double-blind treatment period (up to 52 weeks) for participants who respond to DNTH103 in Part A * Optional open-label extension (OLE) for eligible participants (up to 104 weeks) * Safety follow-up (40 weeks)