| Inclusion Criteria: | 1) Patient has a previous diagnosis of multiple myeloma, based on IMWG 2003 definitions. All three of the following criteria must have been met: (a) Monoclonal immunoglobulin (M component) on electrophoresis, and on immunofixation on serum or on total 24 hour urine (b) Bone marrow (clonal) plasma cells >/= 10% or biopsy proven plasmacytoma (c) Related organ or tissue impairment (CRAB (calcium, renal insufficiency, anemia or bone lesions) symptoms: anemia, hypercalcemia, lytic bone lesions, renal insufficiency, hyperviscosity, amyloidosis or recurrent infections)
2) Patient must have relapsed and refractory MM which is refractory to BTZ and must require treatment for the relapsed disease
3) Patients must have received at least 2 prior lines of therapy which include an IMiD (thalidomide or lenalidomide)
4) Patients must be refractory to the last bortezomib containing line of therapy given in the relapsed and refractory setting defined as: (a) having progressed on or within 60 days of the last bortezomib-containing line of therapy
5) Patient has measurable disease on M protein at study screening defined by at least one of the following measurements as per thresholds clarified in IMWG 2003 disease definitions: (a) Serum M-protein >/= 1 g/dL (>/= 10 g/L) (b) Urine M-protein >/= 200 mg/24 h
6) Patients treated with local radiotherapy with or without concomitant exposure to steroids for pain control or management of cord/nerve root compression, are eligible. Two weeks must have lapsed since last date of radiotherapy, which is recommended to be a limited field. Patients who require concurrent radiotherapy should have entry to the protocol deferred until the radiotherapy is completed and 2 weeks have passed since the last date of therapy
7) Patient's age is >/= 18 years at time of signing the informed consent
8) Patient has an Eastern Cooperative Oncology Group (ECOG) performance status (PS) of </= 2
9) Patient has the following laboratory values within 3 weeks before starting study drug (lab tests may be repeated, as clinically indicated, to obtain acceptable values before screen fail is concluded but supportive therapies are not to be administered within the week prior to screening tests for absolute neutrophil count or platelet counts) (a) Absolute neutrophil count (ANC) >/= 1.0 x 10^9 /L (b) Platelet count >/= 70 x 10^9 /L (c) Serum potassium, magnesium, phosphorus, within normal limits (WNL) for institution (d) Total calcium (corrected for serum albumin) or ionized calcium >/= LLN, and not higher than CTCAE grade 1 in case of elevated value Note: Potassium, calcium, magnesium, and/or phosphorus supplements may be given to correct values that are < LLN: (e) AST/SGOT and ALT/SGPT </= 2.5 x ULN (f) Serum total bilirubin </= 1.5 ULN (or </= 3.0 x ULN if patient has Gilbert syndrome) (g) Serum creatinine levels </= 2.5 x ULN, or calculated creatinine clearance >/= 40 ml/min
10) Patient has provided written informed consent prior to any screening procedures
11) Patient is able to swallow capsules
12) Patient must be able to adhere to the study visit schedule and other protocol requirements
13) Women of childbearing potential (WOCBP) must have a negative serum pregnancy test at within 7 days prior to start of study treatment |