Subjects currently being treated with a CYP 2C9, CYP 2C8, CYP 2C19, CYP 2D6, and P-gp substrate with a narrow therapeutic index. Requires treatment with a strong cytochrome P450 (CYP) 3A4/5 inhibitor Patients who requires treatment with a strong cytochrome P450 (CYP) family 3, subfamily A (3A) inhibitor For cohort 2 (MCL) only: strong CYP3A4 inducers/inhibitors within 14 days prior to day 1 of protocol therapy and/or requires treatment with a strong cytochrome P450 (CYP) 3A4/5 inhibitor Use of a strong inhibitor or inducer of cytochrome P450 (CYP) 3A4. Requires treatment with a strong cytochrome P(CYP)450 3A inhibitor OR subjects who have received a strong cytochrome P(CYP)450 3A inhibitor within 7 days prior to the first dose of ibrutinib or subjects who require continuous treatment with a strong CYP 450 3A inhibitor Use of a moderate or strong inhibitor or inducer of cytochrome P450 (CYP) 3A4 within 7 days prior to the expected start of ibrutinib therapy. Requires treatment with a strong cytochrome P450 (CYP) 3A inhibitor Current use of a strong cytochrome P450 (CYP) 3A4/5 inhibitor or inducer Requires treatment with a strong cytochrome (CYP) 3A4/5 inhibitor Requires treatment with a strong cytochrome P450 (CYP) 3A inhibitors or inducer Requires treatment with a strong cytochrome P450 (CYP) 3A inhibitor/inducers Requires treatment with a strong cytochrome P450 (CYP) 3A4/5 inhibitor Requires treatment with a strong cytochrome P450 (CYP) 3A4/5 inhibitor Requires treatment with a strong cytochrome P450 (CYP), family 3, subfamily A (3A) inhibitor Requires treatment with a strong cytochrome P450 (CYP) family 3, subfamily A (3A) inhibitor Requirement to receive treatment with a strong cytochrome P450 (CYP) 3A inhibitor Requires treatment with strong cytochrome P450 (CYP)3A4/5 inhibitors, unless previously approved by sponsor Current treatment with a strong cytochrome P450 (CYP) 3A4 inhibitor or inducer (EIAEDs and dexamethasone for CNS tumors or metastases, on a stable dose, are allowed) Subjects who received a strong cytochrome P450 (CYP) 3A inhibitor within 7 days prior to the first dose of ibrutinib or subjects who require continuous treatment with a strong CYP 450 3A inhibitor Concurrent use of known cytochrome P450 3A4 (CYP 3A4) inhibiting or activating medications Use of strong CYP inhibitors or drugs that carry a definite risk of torsades de pointes. Please consult the medication prescribing information prior to prescribing new medications to make sure that the new medication is not a strong CYP inhibitor. Moderate CYP inhibitors should be avoided if possible Subject requires treatment with concomitant drugs that are strong inducers of cytochrome P450 (CYP)3A. Strong inhibitors of cytochrome P450 3A4 (CYP3A4) are prohibited; grapefruit juice is an inhibitor of CYP450 and should not be taken with pazopanib Patients who require treatment with a strong cytochrome P450 (CYP) 3A inhibitor Subject requires treatment with concomitant drugs that are strong inducers of cytochrome P450 (CYP)3A. Patients who require treatment with a strong cytochrome P450 (CYP) 3A4/5 inhibitor Treatment with a strong cytochrome P450 (CYP) 3A inhibitor. Requires treatment with a strong cytochrome P450 (CYP) family 3, subfamily A, polypeptide 4/5 (3A4/5) inhibitor Requirement for treatment with a strong cytochrome P450 (CYP) 3A4/5 inhibitor Requires treatment with a strong cytochrome P450 (CYP) 3A inhibitor Requires treatment or prophylaxis with a strong cytochrome P450 (CYP) 3A inhibitor Concurrent use of a strong cytochrome P450(CYP) 3A inhibitor. Patients are not eligible if they require treatment with a strong cytochrome P450 (CYP) family 3, subfamily A (3A) inhibitor Any previous exposure to a CYP17 (17?-hydroxylase/C17,20-lyase) inhibitor; Subject requires treatment with concomitant drugs that are strong inducers of cytochrome P450 (CYP)3A. Patients who requires treatment with a potent cytochrome P450 (CYP) 3A inhibitor or inducer Concurrent use of known cytochrome P450 3A4 (CYP 3A4) inhibiting or activating medications Concurrent use of a strong cytochrome P450 (CYP)3A4/5 inhibitor Requires chronic treatment with strong cytochrome P450 (CYP)3A inhibitors Requires treatment or prophylaxis with a strong cytochrome P450 (CYP) 3A inhibitor Use of strong cytochrome P450 (CYP) 3A4 inhibitors within 2 weeks before the first dose of study drug. Use of strong cytochrome P450 (CYP) 3A4 inhibitors within 2 weeks before the first dose of study drug. Treatment with a strong cytochrome P450 (CYP) 3A inhibitor Patients should agree to avoid grapefruit juice which is a major inhibitor of cytochrome P-450 (CYP)3A4 Requires treatment with a strong cytochrome P450 (CYP) family 3, subfamily A, polypeptide 4/5 (3A4/5) inhibitor EXCLUSION CRITERIA (PRIOR TO IBRUTINIB ADMINISTRATION): Requires treatment with a strong cytochrome P450 (CYP) 3A4/5 inhibitor Has received concomitant treatment with a strong inhibitor or inducer of cytochrome P450 (CYP)3A4/5 within 7 days of first receipt of DS-3201b Subject requires treatment with concomitant drugs that are strong inducers of cytochrome P450 (CYP) 3A. Requires treatment with a strong CYP 3A inhibitor