Study of Single Agent CJM112, and PDR001 in Combination With LCL161 or CJM112 in Patients With Multiple Myeloma

Inclusion Criteria: * Must be able to provide written informed consent before any screening procedures. * Male or female patients ≥18 years of age. * Eastern Cooperative Oncology Group (ECOG) performance status 0 to 2. * Patients with a confirmed diagnosis of multiple myeloma who have received two or more lines of therapy including an IMiD and PI, and are relapsed and/or refractory to their most recent line of therapy. Patients who have received a prior autologous bone marrow transplant and otherwise meet the inclusion criteria are eligible for this study. * Must have measurable disease defined by at least 1 of the following 3 measurements: * Serum M-protein ≥ 0.5 g/dL OR * Urine M-protein ≥ 200 mg/24 hours OR * Serum free light chain (FLC) \> 100 mg/L of involved FLC * All patients must be willing to undergo a mandatory serial bone marrow aspirate and/or biopsy at screening and subsequently following treatment for the assessment of biomarker/pharmacodynamics and disease status. Exceptions may be considered after documented discussion with Novartis. Other inclusion criteria included in the protocol might apply. Exclusion Criteria: * Use of systemic chronic steroid therapy (≥10mg /day of prednisone or equivalent), or any immunosuppressive therapy within 7 days of first dose of study treatment. Topical, inhaled, nasal, or ophthalmic steroids are allowed. * Malignant disease, other than that being treated in this study. Exceptions to this exclusion include the following: malignancies that were treated curatively and have not recurred within 2 years prior to study treatment; completely resected basal cell and squamous cell skin cancers, and completely resected carcinoma in situ of any type. * Active, known or suspected autoimmune disease other than patients with vitiligo, residual hypothyroidism only requiring hormone replacement, psoriasis not requiring systemic treatment or conditions not expected to recur. * Patients with prior known toxicity attributed to PD-1 or PDL-1 directed therapy, which led to discontinuation of these agents, will be excluded from the PDR001 containing arms of the study. * Patients with prior known toxicity from IL-17A directed therapy, which led to discontinuation of the study treatment, will be excluded from CJM112 containing arms of the study. * Any of the following clinical laboratory results during screening (i.e., within 28 days before the first dose of study treatment): * Absolute neutrophil count (ANC) \< 1,000/mm3 without growth factor support within 7 days prior to testing * Platelet count \< 75,000 mm3 without transfusion support within 7 days prior to testing * Bilirubin \> 1.5 times the upper limit of the normal range (ULN) * Aspartate aminotransferase (AST) or alanine aminotransferase (ALT) \> 3 times the ULN * Calculated creatinine clearance \< 30 ml/min according to Cockcroft-Gault equation Other exclusion criteria included in the protocol might apply.