Remibrutinib Open Label Roll-over Post-trial Access Protocol

Inclusion Criteria: \- Participant has completed treatment per protocol in a Novartis study of remibrutinib (unless otherwise specified in a parent study protocol) in a dermatological or allergology indication. Participants, who derive benefit from the treatment with remibrutinib but have not completed the treatment in certain parent studies due to parent study termination by Novartis, may be eligible if the termination was due to reasons other than safety or lack of efficacy (e.g., technical / administrative reasons). * Participant is deriving benefit from remibrutinib, investigator believes he/she would continue to derive benefit from remibrutinib and the benefit outweighs the risk, based on the investigator's judgement. * Participant is unable to obtain access to the marketed remibrutinib formulation per local post study drug supply program, prescription and/or reimbursement guidelines. Exclusion Criteria: Participants meeting any of the following criteria are not eligible for inclusion in this study. * Participant has prematurely discontinued study treatment in the parent study. * Use of prohibited medications