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Slideset on: Jakubowiak AJ, Dytfeld D, Griffith KA, et al. A phase 1/2 study of carfilzomib in combination with lenalidomide and low-dose dexamethasone as a frontline treatment for multiple myeloma. Blood 2012;120:1801-9. Carfilzomib/Lenalidomide/Low-Dose Dexamethasone (CRd) Chemotherapy Active and Well Tolerated in Patients With Newly Diagnosed Multiple Myeloma This program is supported by educational grants from
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clinicaloptions.com/oncology An Online Journal Club Resource for Physician Fellows 1. O’Connor OA, et al. Clin Cancer Res. 2009;15:7085-7091. 2. Mohty B, et al. Haematologica. 2010;95:311-319. 3. Vij R, et al. ASH 2011. Abstract 813. Background Carfilzomib (PR-171): selective, irreversible proteasome inhibitor with activity in hematologic malignancies, including MM [1] –Durable antitumor activity in patients with relapsed/refractory multiple myeloma [1] –Active in patients refractory to bortezomib [2] –Decreased incidence of peripheral neuropathy compared with bortezomib [3]
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clinicaloptions.com/oncology An Online Journal Club Resource for Physician Fellows Jakubowiak AJ, et al. Blood 2012;120:1801-9. Phase I: CRd MTD Lenalidomide 25 mg/day on Days 1-21 + Dexamethasone 40 mg/wk for cycles 1-4, 20 mg/wk for cycles 5+ Carfilzomib 28-day cycles: Days 1, 2, 8, 9, 15, 16 for cycles 1-8 (induction); Days 1, 2, 15, 16 for cycles 9-24 (maintenance) All patients receive carfilzomib 20 mg/m 2 on Days 1, 2 for cycle 1, then proceed to investigational dose (remainder of study) Phase II: MTD not reached; dosing as before with carfilzomib 36 mg/m 2 Primary endpoint: response rate ≥ nCR; secondary endpoints: ORR, duration, PFS, OS, TTP, and feasibility of stem cell collection after cycle 4 ≤ 1 DLT ≥ 2 DLT MTD: 20 mg/m² 20 mg/m² MPD: 36 mg/m² 27 mg/m²36 mg/m² ≤ 1 DLT MTD: 27 mg/m² ≥ 2 DLT Phase I/II Study Design
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clinicaloptions.com/oncology An Online Journal Club Resource for Physician Fellows ORR With CRd Rapid, durable responses improve with continued treatment Depth and rate of response not affected by ISS stage or cytogenetic profile PFS: 97% (12 mos), 92% (24 mos) 0 10 20 30 40 50 60 70 80 90 100 All Patients (N = 53) 4+ Cycles (n = 49) 8+ Cycles (n = 36) 12+ Cycles (n = 29) sCR = nCR = VGPR = PR Patients With ORR (%) Jakubowiak AJ, et al. Blood 2012;120:1801-9.
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clinicaloptions.com/oncology An Online Journal Club Resource for Physician Fellows CRd Impact on Stem Cell Collection 35 patients underwent stem cell collection after 4 cycles 28 patients used only growth factors; 7 patients used chemotherapy and growth factors Collection unsuccessful in 1 patient (older than 70 yrs of age, collection attempted after 8 cycles) Median number of CD34+ cells: 6.9 x 10 6 /kg (range: 0.6- 27.8 x 10 6 /kg) Jakubowiak AJ, et al. Blood 2012;120:1801-9.
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clinicaloptions.com/oncology An Online Journal Club Resource for Physician Fellows Safety of CRd Regimen MTD not reached 31% of patients required CRd dose modification No grade 3/4 adverse events during maintenance phase Treatment-Emergent Adverse Events During Induction, %Any GradeGrade 3/4 Nonhematologic Hyperglycemia7223 Hypophosphatemia4525 Elevated liver function test288 Rash288 Peripheral neuropathy23*0 Pulmonary embolism66 Hematologic Thrombocytopenia6817 Anemia6021 Neutropenia3017 *Peripheral neuropathy: 3 grade 2 events, 20 grade 1 events. Jakubowiak AJ, et al. Blood 2012;120:1801-9.
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clinicaloptions.com/oncology An Online Journal Club Resource for Physician Fellows CRd Summary Carfilzomib combined with lenalidomide and low-dose dexamethasone produces rapid, durable responses in patients with newly diagnosed MM –Response improved with continued treatment –≥ sCR: 45% (4 cycles), 61% (8 cycles), 62% (12 cycles) –Well tolerated –No grade 3/4 neuropathy; manageable hematologic toxicity; hyperglycemia, hypophosphatemia, liver dysfunction, rash, edema, dyspnea, DVT/PE noted –No adverse effects on stem cell collection –Median number of CD34+ cells: 6.9 x 10 6 /kg (range: 0.6-27.8 x 10 6 /kg) Jakubowiak AJ, et al. Blood 2012;120:1801-9.
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