A Phase 1 Study in Subjects With Relapsed or Refractory Multiple Myeloma

Inclusion Criteria:

- Pathologically documented,multiple myeloma relapsed or refractory progressive disease after at least 3 lines of therapy for multiple myeloma.

Prior therapeutic treatment or regimens must include proteasome inhibitors (e.g. bortezomib) and immunomodulatory drugs (e.g. lenalidomide).

Willing and able to undergo bone marrow aspirate per protocol (with or without bone marrow biopsy per institutional guidelines).
Measurable disease per the International Myeloma Working Group (IMWG) response criteria
Hematological function, as follows, without transfusion support:
Absolute neutrophil count ≥ 1.0 X 10^9/L,
Platelet count ≥ 75 X 10^9/L (in patients with < 50% of bone marrow nucleated cells were plasma cells) or ≥ 50 X 10^9/L (in patients with ≥ 50% of bone marrow nucleated cells were plasma cells) without transfusion or growth factor support
Hemoglobin > 8 g/dL (> 80 g/L)
Adequate renal and hepatic function
Left ventricular ejection fraction (LVEF) > 50%

Exclusion Criteria:

Currently receiving treatment in another investigational device or drug study, or less than 28 days since ending treatment on another investigational device or drug study
Autologous stem cell transplant less than 90 days prior to study day 1
Multiple myeloma with IgM subtype
POEMS (polyneuropathy, organomegaly, endocrinopathy, monoclonal protein, and skin changes) syndrome, Plasma cell leukemia, Waldenstrom's macroglobulinemia or Amyloidosis
Glucocorticoid therapy (prednisone > 30 mg/day or equivalent) within 7 days prior to study day
Myocardial infarction within 6 months of study day 1, symptomatic congestive heart failure (New York Heart Association > class II)
A baseline ECG QTcF > 470 msec
Anti-tumor therapy (chemotherapy, antibody therapy, molecular targeted therapy, or investigational agent) within 28 days prior to study day 1