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Real-world data on regimens for relapsed/refractory multiple myeloma (RRMM) represent an important component of therapeutic decision-making. This multi-centric, retrospective, observational study conducted by the treating physicians evaluated the effectiveness and safety of ixazomib-lenalidomide-dexamethasone (IRd) in 155 patients who received ixazomib via early access programs in Greece, the UK, and the Czech Republic. Median age was 68 years; 17% had an Eastern Cooperative Oncology Group performance status ≥ 2; median number of prior therapies was 1 (range 1-7); 91%, 47%, and 17% had received prior bortezomib, thalidomide, and lenalidomide, respectively. Median duration of exposure to ixazomib was 9.6 months. Overall response rate was 74%, including 35% very good partial response or better (16% complete response). Median progression-free survival (PFS) was 27.6 months (27.6 and 19.9 months in patients with 1 or > 1 prior lines, respectively). IRd treatment for ≥ 6 months was associated with longer PFS (hazard ratio 0.06). Fourteen patients (9%) discontinued IRd due to adverse events/toxicity in the absence of disease progression. Peripheral neuropathy was reported in 35% of patients (3% grades 3-4). These findings support the results of the phase III TOURMALINE-MM1 trial in a broader real-world RRMM population.

Original publication

DOI

10.1007/s00277-020-03981-z

Type

Journal article

Journal

Ann Hematol

Publication Date

05/2020

Volume

99

Pages

1049 - 1061

Keywords

Ixazomib, Lenalidomide, Myeloma, Real world, Relapsed, Adult, Aged, Aged, 80 and over, Antineoplastic Combined Chemotherapy Protocols, Boron Compounds, Dexamethasone, Disease-Free Survival, Female, Glycine, Humans, Lenalidomide, Male, Middle Aged, Multiple Myeloma, Recurrence, Survival Rate