Panobinostat plus bortezomib and dexamethasone: impact of dose intensity and administration frequency on safety in the PANORAMA 1 trial
- Authors
- San-Miguel, Jesus F.; Hungria, Vania T. M.; Yoon, Sung-Soo; Beksac, Meral; Dimopoulos, Meletios A.; Elghandour, Ashraf; Jedrzejczak, Wieslaw W.; Guenther, Andreas; Nakorn, Thanyaphong Na; Siritanaratkul, Noppadol; Schlossman, Robert L.; Hou, Jian; Moreau, Philippe; Lonial, Sagar; Lee, Jae-Hoon; Einsele, Hermann; Salwender, Hans; Sopala, Monika; Redhu, Suman; Paul, Sofia; Corrado, Claudia; Richardson, Paul G.
- Issue Date
- Oct-2017
- Publisher
- WILEY
- Keywords
- panobinostat; deacetylase inhibitor; multiple myeloma; safety; dose intensity
- Citation
- BRITISH JOURNAL OF HAEMATOLOGY, v.179, no.1, pp.66 - 74
- Journal Title
- BRITISH JOURNAL OF HAEMATOLOGY
- Volume
- 179
- Number
- 1
- Start Page
- 66
- End Page
- 74
- URI
- https://scholarworks.bwise.kr/gachon/handle/2020.sw.gachon/5645
- DOI
- 10.1111/bjh.14821
- ISSN
- 0007-1048
- Abstract
- Panobinostat in combination with bortezomib and dexamethasone demonstrated a significant and clinically meaningful progression-free survival benefit compared with placebo, bortezomib and dexamethasone in the phase 3 PANORAMA 1 (Panobinostat Oral in Multiple Myeloma 1) trial. Despite this benefit, patients in the panobinostat arm experienced higher rates of adverse events (AEs) and higher rates of discontinuation due to AEs. This PANORAMA 1 subanalysis examined AEs between 2 treatment phases of the study (TP1 and TP2), in which administration frequency of bortezomib and dexamethasone differed per protocol. The incidences of several key AEs were lower in both arms following the planned reduction of bortezomib dosing frequency in TP2. In the panobinostat arm, rates of thrombocytopenia (grade 3/4: TP1, 56.7%; TP2, 6.0%), diarrhoea (grade 3/4: TP1, 24.1%; TP2, 7.1%), and fatigue (grade 3/4: TP1, 16.3%; TP2, 1.8%) were lower in TP2 compared with TP1. Dose intensity analysis of panobinostat and bortezomib by cycle in the panobinostat arm showed reductions of both agent doses during cycles 1-4 due to dose adjustments for AEs. Exposure-adjusted analysis demonstrated a reduction in thrombocytopenia frequency in TP1 following dose adjustment. These results suggest that optimization of dosing with this regimen could improve tolerability, potentially leading to improved patient outcomes.
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