Randomized phase II study of first-line everolimus plus bevacizumab (E+B) versus interferon α-2a plus bevacizumab (I+B) in patients (pts) with metastatic renal cell carcinoma (mRCC): Record-2 final overall survival (OS) and safety results.

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Abstrakt byl publikován rovněž v Supplementu časopisu
J Clin Oncol 31, 2013 (suppl; abstr 4576)

Abstract:

Background: RECORD-2 (NCT00719264) primary analysis demonstrated similar median progression-free survival (PFS) for pts with mRCC treated with E+B and I+B (Dec 2011 cut-off). The primary objective was not met; median PFS in E+B/I+B was 9.3/10.0 mo (HR_IFN/EVE, 0.91; 95% CI, 0.69-1.19; P=0.485) and probability of success (PoS) of a subsequent phase III trial was 5.1%. Here we present final OS and safety/exposure results (Aug 2012 cut-off). Methods: Untreated pts with clear cell mRCC and previous nephrectomy were randomized 1:1 to B 10 mg/kg every 2 weeks and either E 10 mg/day or I (9 MIU 3 times/week). The primary objective was treatment effect on PFS per central review based on an estimation of PoS (≥50%) of a subsequent phase III study. Secondary objectives included OS and safety. Results: In E+B (n=182) and I+B (n=183) arms, median age was 60/60 years and 76/72% of pts were men, respectively. In both arms, most pts (93%) were of favorable/intermediate MSKCC risk. Median follow-up was 33 mo. In E+B and I+B arms, 51/52% of pts died, respectively. Median OS (95% CI) was 27.1 mo (19.9-35.3) in the E+B arm and 27.1 mo (20.4-30.8) in the I+B arm. After discontinuing study treatment, 64/60% of pts in E+B and I+B arms, respectively, received antineoplastic therapy. Median exposure duration in E+B and I+B arms was 8.5/8.3 mo, respectively; AEs resulted in treatment discontinuation for 23/25% of pts, respectively. The most frequent AEs (%) were stomatitis (63), proteinuria (50), diarrhea (40), hypertension (38), and epistaxis (35) in the E+B arm and decreased appetite (45), fatigue (42), proteinuria (38), asthenia (35), and pyrexia (35) in the I+B arm. The most frequent grade 3/4 AEs (%) were proteinuria (24), stomatitis (11), and anemia (11) for E+B and fatigue (17), asthenia (14), and proteinuria (10) for I+B. Conclusions: OS of E+B and I+B was similar. OS results are consistent with PFS primary analysis. First-line treatment with mTOR inhibitor-based therapy did not impair chance of survival relative to standard therapy. No new safety issues were identified and E+B remained generally well tolerated. Clinical trial information: NCT00719264.