Multiple Myeloma
Conditions
Brief summary
The combination of PARP inhibitor (ABT-888) with a proteasome inhibitors (bortezomib) have demonstrated significant anti-myeloma effects in preclinical lab and animal studies. The goal of this phase I trial is to evaluate in patients with relapsed or refractory multiple myeloma the safety, toxicity profile and tolerability of ABT-888 (Veliparib) administered on a schedule including twice daily oral dosing for 14 days followed by 1 week rest in combination with standard dosing of Bortezomib.
Detailed description
This is a dose-finding / dose escalation phase I trial of ABT-888 (Veliparib) in combination with Bortezomib and Dexamethasone in patients with relapsed or refractory multiple myeloma. ABT-888 is given orally (PO) twice daily (every 12 hours) for 14 days in a 21 days cycle. First dose to be given within 1 hour of Bortezomib on day 1. Planned starting dose is 20 mg PO every 12 hours. Starting dose escalation is planned until an MTD is reached.
Interventions
DRUGABT-888/Bortezomib
ABT-888 is given orally (PO) twice daily (every 12 hours) for 14 days in a 21 days cycle. First dose to be given within 1 hour of Bortezomib on day 1. Planned starting dose is 20 mg PO every 12 hours. Starting dose escalation is planned until an MTD is reached.
Sponsors
Tom Baker Cancer Centre
Abbott
AHS Cancer Control Alberta
Study design
Allocation
NA
Intervention model
SINGLE_GROUP
Primary purpose
TREATMENT
Masking
NONE
Eligibility
Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
No
Inclusion criteria
* Confirmed diagnosis of multiple myeloma. * Measurable disease, according to the International Myeloma Working Group criteria. * ECOG performance status 0, 1 or 2. * Patients must have received prior treatment for MM and have relapsed or progressed on prior therapy; no limit on number of prior treatment regimens, but prior treatment must be completed 2 weeks prior to registration. Prior exposure to Bortezomib is not an
Exclusion criteria
as long as patients did not progress or relapse while receiving or within 3 months of completing trt with bortezomib * Prior radiation, completed at least 4 weeks prior to registration, is permitted. * Adequate marrow reserve, liver and renal function
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Determine the maximum tolerated dose (MTD) of ABT-888. | 21 Day Cycle | Study follows a modified dose escalation scheme with a 3+3 design (3 to 6 patients per dose level or cohort). Only the ABT-888 dose will be escalated with a maximum dose of ABT-888 of 100 mg PO BID. If \>1 out 6 patients at any dose level suffer dose limiting toxicity, then dose escalation is stopped, and this dose is declared as MTD. 3 additional patients will be entered at the next lowest dose level. The recommended phase 2 dose is defined as the dose level with ≤ 1 out of 6 patients experiencing DLTs at the highest dose level below the MTD. |
| Identify the Dose Limiting Toxicities (DLT) of ABT-888 | 21 Day Cycle | All adverse events, including DLTs, are graded according to the NCI CTCAE, v4.0. A DLT is defined as any grade 3 or higher non-hematologic toxicity, or any grade 4 hematologic toxicity, considered by the investigator to be related to the study drugs and occurring during Days 1-22 of Cycle 1. |
Secondary
| Measure | Time frame | Description |
|---|---|---|
| Activity Objective - Preliminary assessment of the anti-tumor activity of ABT-888 | 21 day cycle | Response to study drugs is assessed at the end of each cycle according to the International Myeloma Working Group (IMWG) response criteria. |
| Exploratory Objective - Preliminary assessment of potential biomarkers | 24 months | Gene expression profiling is performed at baseline and compared between responders versus non-responders in order to identify a treatment response signature. 2.5 mg of RNA will be extracted from plasma cells sorted from pre-treatment (D1, cycle 1) (n=20) and post-treatment (D11, cycle 1) (n=20) bone marrow aspirates collected from patients treated in the extension cohort. cRNAs will be hybridized onto the U133 Plus 2.0 gene chips and raw data files acquired using Affymetrix Microarray Suite version 5.1 software and analyzed with the Partek Genomics Suite v6.4. |
| Exploratory Objective - Determine in vivo the effect of ABT-888 on PARP inhibitors. | 24 Months | Poly-ADP-ribose (PAR) levels are measured in sorted CD138+ plasma cells from pre-ABT-888 treatment on day 1 cycle1, as well as post ABT-888 treatment (within 4-6 hours) on days 4 and 11. PAR levels will be measured by standardized ELISA assays (HT PARP in vivo Pharmacodynamic Assay II™, Trevigen). |
| Determine invivo the effects of Bortezomib on the plasma cells DNA genes expression and function | 24 Months | Gene expression profiling is performed at baseline prior to treatment with bortezomib and on days 4 and 11 post bortezomib treatment. 2.5 mg of RNA will be extracted from plasma cells sorted from bone marrow aspirates collected from patients treated on trial. cRNAs will be hybridized onto the U133 Plus 2.0 gene chips and raw data files acquired using Affymetrix Microarray Suite version 5.1 software and analyzed with the Partek Genomics Suite v6.4. |
Countries
Canada
Outcome results
None listed