Article ; Online: Feasibility of Long-term Proteasome Inhibition in Multiple Myeloma by in-class Transition From Bortezomib to Ixazomib.
Clinical lymphoma, myeloma & leukemia
2020 Volume 20, Issue 11, Page(s) e910–e925
Abstract: Background: The ongoing US MM-6 study is investigating in-class transition (iCT) from parenteral bortezomib-based induction to all-oral IRd (ixazomib-lenalidomide-dexamethasone) with the aim of increasing proteasome inhibitor (PI)-based treatment ... ...
Abstract | Background: The ongoing US MM-6 study is investigating in-class transition (iCT) from parenteral bortezomib-based induction to all-oral IRd (ixazomib-lenalidomide-dexamethasone) with the aim of increasing proteasome inhibitor (PI)-based treatment adherence and duration while maintaining patients' health-related quality of life (HRQoL) and improving outcomes. Patients and methods: US community sites are enrolling non-transplant-eligible patients with newly diagnosed multiple myeloma (MM) with no evidence of progressive disease after 3 cycles of bortezomib-based therapy to receive IRd (up to 39 cycles or until progression or toxicity). The patients use mobile or wearable digital devices to collect actigraphy (activity and sleep) data and electronically complete HRQoL, treatment satisfaction and medication adherence questionnaires. The primary endpoint is progression-free survival. The key secondary endpoints include response rates and therapy duration. Results: At the data cutoff, 84 patients had been treated (median age 73 years; 44% aged ≥ 75 years; 49% men; 15% Black or African American; and 10% Hispanic or Latino). Of the 84 patients, 62% were continuing therapy. The mean duration of total PI therapy was 10.1 months and for the IRd regimen was 7.3 months. With an 8-month median follow-up, the 12-month progression-free survival rate was 86% (95% confidence interval, 73%-93%) from both the start of bortezomib-based treatment and the start of IRd. The overall response rate was 62% (complete response, 4%; very good partial response, 25%; partial response, 33%) after bortezomib-based induction and 70% (complete response, 26%; very good partial response, 29%; partial response, 15%) after iCT. The IRd safety profile was consistent with previous clinical trial data, and HRQoL and treatment satisfaction were maintained. Conclusion: The patients included in the US MM-6 study are representative of the real-world US MM population. The use of iCT might permit prolonged PI-based therapy with promising efficacy, without impacting patients' HRQoL or treatment satisfaction. |
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MeSH term(s) | Aged ; Antineoplastic Combined Chemotherapy Protocols/pharmacology ; Antineoplastic Combined Chemotherapy Protocols/therapeutic use ; Boron Compounds/pharmacology ; Boron Compounds/therapeutic use ; Bortezomib/pharmacology ; Bortezomib/therapeutic use ; Female ; Glycine/analogs & derivatives ; Glycine/pharmacology ; Glycine/therapeutic use ; Humans ; Male ; Multiple Myeloma/drug therapy ; Multiple Myeloma/mortality ; Multiple Myeloma/pathology ; Progression-Free Survival ; Proteasome Inhibitors/pharmacology ; Proteasome Inhibitors/therapeutic use ; Survival Analysis ; Treatment Outcome |
Chemical Substances | Boron Compounds ; Proteasome Inhibitors ; Bortezomib (69G8BD63PP) ; ixazomib (71050168A2) ; Glycine (TE7660XO1C) |
Keywords | covid19 |
Language | English |
Publishing date | 2020-07-06 |
Publishing country | United States |
Document type | Journal Article ; Research Support, Non-U.S. Gov't |
ZDB-ID | 2540992-X |
ISSN | 2152-2669 ; 2152-2650 |
ISSN (online) | 2152-2669 |
ISSN | 2152-2650 |
DOI | 10.1016/j.clml.2020.06.024 |
Database | MEDical Literature Analysis and Retrieval System OnLINE |
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