1. Duration of frontline therapy and impact on clinical outcomes in newly diagnosed multiple myeloma patients not receiving frontline stem cell transplant.
- Author
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Ailawadhi, Sikander, Ogbonnaya, Augustina, Murty, Sharanya, Cherepanov, Dasha, Schroader, Bridgette, Romanus, Dorothy, Farrelly, Eileen, and Chari, Ajai
- Subjects
chemotherapy ,clinical management ,multiple myeloma ,target therapy ,Adult ,Humans ,Aged ,Multiple Myeloma ,Retrospective Studies ,Stem Cell Transplantation ,Progression-Free Survival ,Disease Progression ,Antineoplastic Combined Chemotherapy Protocols ,Bortezomib - Abstract
BACKGROUND: Extended first-line therapy (1LT) has improved clinical outcomes in newly diagnosed multiple myeloma (NDMM). This retrospective study of NDMM patients evaluated the relationship between dose-attenuation of 1LT and duration of therapy (DOT) and DOT on outcomes. METHODS: Adults with NDMM not undergoing stem cell transplant (SCT) from January 1, 2012 toMarch 31, 2018 from the Integrated Oncology Network were included; 300 were randomly selected for chart review. 1LT DOT, time to next treatment (TTNT), progression-free survival (PFS), and overall survival (OS) were estimated using Kaplan-Meier analysis. Marginal structural models evaluated relationships between DOT and TTNT, PFS, and OS at 2 years accounting for confounders and survival bias from the time-dependent nature of DOT. RESULTS: Of 300 chart-reviewed patients, 93 were excluded for incomplete data or meeting exclusion criteria. Among 207 NDMM patients, median age was 74 years; 146 (70.5%) did not receive dose-attenuation during 1LT. Patients with short DOT were older, frailer, with a higher comorbidity burden, and a significantly lower proportion had an Eastern Cooperative Oncology Group PS = 0. As DOT increased, more patients underwent dose-attenuation (p
- Published
- 2023