This is a long-term study to collect data about the BTK inhibitor Ibrutinib. It also allows access to Ibrutinib to participants who were in Ibrutinib clinical trials that have now closed. Participants are given the same dose of the drug that they received previously until a point that it becomes ineffective, or the study ends.
• Participants can enter by invitation only.
• All participants must have participated in an ibrutinib clinical trial which has been completed.
• Patients must have received Ibrutinib for at least 6 months.