Isatuximab in combination with lenalidomide and dexamethasone in patients with high-risk smoldering multiple myeloma: Updated safety run-in results from the randomized phase 3 ithaca study
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info:eu-repo/semantics/openAccessTarih
2022Yazar
Mateos, Maria-VictoriaRodriguez Otero, Paula
Koh, Youngil
Martinez-Lopez, Joaquin
Parmar, Gurdeep
Prince, H. Miles
Quach, Hang
Ribas, Paz
Hermansen, Emil
Hungria, Vania T. M.
Kalayoğlu Beşışık, Sevgi
Kim, Jin Seok
Leleu, Xavier
Peceliunas, Valdas
Schjesvold, Fredrik
Sevindik, Ömür Gökmen
Lavrova, Tatiana
Dubin, Franck
Devisme, Christine
Lepine, Lucie
Ghobrial, Irene
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Mateos, M.-V., Rodriguez Otero, P., Koh, Y., Martinez-Lopez, J., Parmar, G., Prince, H. M. ... Ghobrial, I. (2022). Isatuximab in combination with lenalidomide and dexamethasone in patients with high-risk smoldering multiple myeloma: Updated safety run-in results from the randomized phase 3 ithaca study. American Society of Hematology içinde (7317-7319. ss.). https://dx.doi.org/10.1182/blood-2022-157302Özet
Background: Results from a randomized, Phase 3 study by the Spanish Myeloma Group (PETHEMA/GEM) previously showed that treatment with lenalidomide plus dexamethasone (Rd) may delay progression to active disease in patients (pts) with high-risk smoldering multiple myeloma (SMM), compared with observation. To further improve outcomes, addition of the anti-CD38 antibody isatuximab (Isa) to lenalidomide and dexamethasone (Isa-Rd) for the treatment of pts with high-risk SMM is being evaluated in the ongoing, randomized, multi-center, Phase 3 ITHACA study (NCT04270409). Initial findings from the safety run-in analysis of this trial have shown a manageable safety profile and encouraging, preliminary anti-myeloma activity. We now report updated safety and efficacy results from the safety run-in part of ITHACA at a median follow-up of 19.4 months. Methods: Pts were included in the study if they had been diagnosed within 5 years with SMM (per the International Myeloma Working Group [IMWG] criteria) and had high-risk SMM according to the Mayo '20-2-20' and/or updated PETHEMA model criteria. Pts who had received prior anti-myeloma treatment were not eligible. Enrolled pts received Isa 10 mg/kg IV on day (D) 1, 8, 15, and 22 in cycle (C) 1, D1 and D15 C2-12, D1 C13-36; plus R D1-21 (25 mg C1-9; 10 mg C10-24) and d weekly (40 mg, 20 mg for ≥75 yr-old pts C1-9; 20 mg C10-24). Cycle duration was 28 days. Safety evaluations included treatment-emergent AEs (TEAEs)/serious AEs and laboratory parameters, graded by NCI-CTCAE v5.0. Response was determined by IMWG criteria (2016). Mandatory imaging by MRI and/or low-dose whole-body CT/PET-CT, and assessments of minimal residual disease (MRD, by next-generation sequencing in pts with very good partial response [VGPR] or better), were performed at protocol-defined time points. The primary study objective for the safety run-in was to confirm the recommended dose of Isa in combination with Rd. Overall response rate (ORR) and MRD negativity rate at 10-5 sensitivity were included as secondary endpoints.
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