A Study to Evaluate the Durability of Response and Safety of Nemolizumab for 24 Weeks in Participants With Prurigo Nodularis

Participants received either 1 \[30 milligram (mg)\] or 2 (2\*30 mg) subcutaneous (SC) injection(s) of nemolizumab every 4 weeks (Q4W) for a period of 24 weeks (with last injection at Week 20). Participants received the same dosage (1 or 2 SC injections) as received in the lead-in LTE study RD.06.SPR.202699, as assigned by interactive response technology (IRT).

Participants received either 1 (30 mg) or 2 (2\*30 mg) SC injection(s) of placebo every 4 weeks for a period of 24 weeks (with last injection at Week 20). Participants received the same dosage (1 or 2 SC injections) as received in the lead-in LTE study RD.06.SPR.202699, as assigned by IRT.