RATES OF PERIPHERAL NEUROPATHY (PN) IN PATIENTS WITH RELAPSED AND REFRACTORY MULTIPLE MYELOMA (RRMM) TREATED WITH CARFILZOMIB VS COMPARATORS IN PIVOTAL PHASE 3 TRIALS
JOURNAL OF CLINICAL ONCOLOGY(2017)
Abstract
8041 Background: PN is a dose-limiting toxicity for some anti-MM agents, such as the proteasome inhibitor (PI) bortezomib (V). Carfilzomib (K), a novel irreversible PI associated with low PN, was evaluated in 2 recent phase 3 studies in RRMM pts. Methods: This analysis evaluated PN rates in ASPIRE (K [27 mg/m 2 ]-lenalidomide [R]-dexamethasone[d] [KRd] vs Rd in relapsed MM; Stewart 2015) and ENDEAVOR (Kd [K 56 mg/m 2 ] vs Vd in RRMM; Dimopoulos 2016). We evaluated grade ≥2 PN during treatment, patient-reported outcomes (PROs; QLQ-C30 pain, FACT/GOG-neurotoxicity subscales), and progression-free survival (PFS) in pts with BL history of PN. Results: In ASPIRE, grade ≥2 PN rate was low (8.9% [KRd] vs 8.0% [Rd]; Table). Pain subscale scores were similar between arms. Median PFS was longer with KRd vs Rd for pts with BL grade ≥2 PN. In ENDEAVOR, grade ≥2 PN rate during the study (prespecified key secondary endpoint) was significantly lower with Kd vs Vd (6.0% vs 32.0%; Table). Pts had significantly improved pain and neurotoxicity subscale scores with Kd vs Vd. PFS improved with Kd vs Vd in pts with BL history of grade ≥2 PN (Table). Conclusions: In ENDEAVOR, Kd resulted in less PN vs Vd; in ASPIRE, PN rate was similar for KRd vs Rd. PFS was longer with KRd and Kd vs Rd and Vd, respectively, including in pts with BL grade ≥2 PN. Improved pain and neurotoxicity outcomes with K may be attributed to better disease control and/or lower PN rates. Clinical trial information: NCT01568866, NCT01080391. [Table: see text]
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Key words
peripheral neuropathy,refractory multiple myeloma,rrmm
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