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Jerome Goldschmidt Jr.



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    OA05 - Clinical Trials in IO (ID 899)

    • Event: WCLC 2018
    • Type: Oral Abstract Session
    • Track: Advanced NSCLC
    • Presentations: 1
    • Moderators:
    • Coordinates: 9/24/2018, 13:30 - 15:00, Room 106
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      OA05.07 - IMpower132: PFS and Safety Results with 1L Atezolizumab + Carboplatin/Cisplatin + Pemetrexed in Stage IV Non-Squamous NSCLC (ID 12389)

      14:35 - 14:45  |  Author(s): Jerome Goldschmidt Jr.

      • Abstract
      • Presentation
      • Slides

      Background

      In addition to the combination of atezolizumab (anti–PD-L1)+platinum+taxane±bevacizumab, non-squamous NSCLC patients may derive benefit from adding atezolizumab to platinum+pemetrexed. The randomized Phase III IMpower132 study (NCT02657434) evaluated first-line pemetrexed+carboplatin or cisplatin±atezolizumab in patients with stage IV non-squamous NSCLC without EGFR or ALK driver mutations.

      a9ded1e5ce5d75814730bb4caaf49419 Method

      Patients were randomized 1:1 to receive 4 or 6 cycles of carboplatin AUC 6 mg/mL/min or cisplatin 75 mg/m2 + pemetrexed 500 mg/m2 Q3W alone (arm PP) or in combination with atezolizumab 1200 mg Q3W (arm APP), followed by pemetrexed (arm PP) or atezolizumab + pemetrexed (arm APP) maintenance. Atezolizumab could be continued beyond disease progression per protocol guidelines. PFS and OS were co-primary endpoints. Efficacy by PD-L1 expression was an exploratory endpoint. Here, we present investigator-assessed PFS per RECIST v1.1 (final analysis), OS (interim analysis) and safety data.

      4c3880bb027f159e801041b1021e88e8 Result

      292 pts were enrolled in arm APP and 286 pts in arm PP. 43% and 40% in arms APP and PP, respectively, had ECOG PS 0. At the data cutoff (22 May 2018), median follow-up was 14.8 mo overall. PFS analysis showed a statistically significant improvement between arm APP vs PP (median PFS 7.6 vs 5.2 mo; HR=0.596; 95% CI: 0.494, 0.719; P<0.0001). Interim analysis showed a numerical but non-statistically significant OS improvement (Table). Efficacy results were consistent across all key clinical subgroups. Grade 3-4 TRAEs occurred in 53.6% of patients (APP) vs 39.1% (PP). 7.2% of patients (APP) vs 5.1% (PP) had a Grade 5 AE, 3.8% (APP) vs 2.6% (PP) were treatment related. 48.5% of patients (APP) vs 38.0% (PP) experienced AEs of special interest specific to atezolizumab.

      8eea62084ca7e541d918e823422bd82e Conclusion

      IMpower132 met its co-primary endpoint of investigator-assessed PFS in the ITT. Interim OS data (not fully mature) showed numerical improvement. Atezolizumab+pemetrexed+carboplatin or cisplatin was well tolerated, and no new safety signals were identified.

      Table. IMpower132 Efficacy Analyses

      		APP Arm
      (atezolizumab+pemetrexed+ carboplatin or cisplatin)      		 PP Arm
      (pemetrexed+carboplatin or cisplatin)
      ITT n=292 n=286
      Median PFS (95% CI), mo 7.6 (6.6, 8.5) 5.2 (4.3, 5.6)
      HRa (95% CI; P value) 0.596 (0.494, 0.719; P < 0.0001)
      12-Month PFS (95% CI), % 33.7% (28.2, 39.2) 17.0% (12.6, 21.4)
      Median OS (95% CI), mo 18.1 (13.0, NE) 13.6 (11.4, 15.5)
      HRa (95% CI; P value) 0.813 (0.644, 1.025; P = 0.0797)
      12-Month OS (95% CI), % 59.6% (53.9, 65.3) 55.4% (49.5, 61.2)
      ORR (confirmed, inv-assessed), % 46.9% 32.2%
      DOR (95% CI), mo 10.1 (7.2, 13.3) 7.2 (5.7, 9.0)
      PD-L1–highb n=25 n=20
      Median PFS (95% CI), mo 10.8 (7.9, NE) 6.5 (2.4, 10.6)
      HR (95% CI; P value) 0.464 (0.224, 0.960; P = 0.0339)
      PD-L1–lowb n=63 n=73
      Median PFS (95% CI), mo 6.2 (4.4, 8.4) 5.7 (4.2, 7.9)
      HR (95% CI; P value) 0.804 (0.556, 1.163; P = 0.2462)
      PD-L1–negativeb n=88 n=75
      Median PFS (95% CI), mo 8.5 (6.1, 11.2) 4.9 (4.2, 5.8)
      HR (95% CI; P value) 0.448 (0.313, 0.642; P < 0.0001)

      DOR, duration of response; HR, hazard ratio; inv, investigator; ORR, objective response rate; OS, overall survival; PFS, progression-free survival.

      a Stratified. b Baseline tissue available in 60% of patients. PD-L1–high (TC3/IC3): patients with PD-L1 expression in ≥50% of tumor cells or ≥10% of tumor-infiltrating immune cells; PD-L1–low (TC12/IC12): patients with PD-L1 expression in ≥1% and <50% of tumor cells or ≥1% and <10% of tumor-infiltrating immune cells; and PD-L1–negative (TC0/IC0): patients with PD-L1 expression in <1% of tumor cells and <1% of tumor-infiltrating immune cells.

      NCT02657434

      6f8b794f3246b0c1e1780bb4d4d5dc53

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    P1.01 - Advanced NSCLC (Not CME Accredited Session) (ID 933)

    • Event: WCLC 2018
    • Type: Poster Viewing in the Exhibit Hall
    • Track:
    • Presentations: 1
    • Moderators:
    • Coordinates: 9/24/2018, 16:45 - 18:00, Exhibit Hall
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      P1.01-83 - IMpower150: Impact of Chemotherapy Cycles in 1L Metastatic NSCLC in Patients Treated With Atezolizumab + Bevacizumab (ID 12180)

      16:45 - 18:00  |  Author(s): Jerome Goldschmidt Jr.

      • Abstract
      • Slides

      Background

      In the randomized Phase III IMpower150 study, atezolizumab (anti–programmed death-ligand 1 [PD-L1]) + bevacizumab + chemotherapy (Arm B) showed statistically significant and clinically meaningful improvement in both progression-free survival (PFS) and overall survival (OS) over bevacizumab + chemotherapy (Arm C) in patients with first-line (1L) nonsquamous non-small cell lung cancer (NSCLC). The study protocol allowed investigator choice of 4 or 6 chemotherapy cycles. The objective of this exploratory analysis was to assess the impact of chemotherapy cycles on safety and efficacy outcomes.

      a9ded1e5ce5d75814730bb4caaf49419 Method

      Patients were categorized based on actual chemotherapy cycles received in Arm B. Landmark analysis of PFS was performed to assess the benefit of 4 vs 6 chemotherapy cycles. Sensitivity analyses were performed to adjust the numerically imbalanced baseline factors.

      4c3880bb027f159e801041b1021e88e8 Result

      A total of 356 patients were randomized in Arm B; 188 patients (53%) were planned to receive 4 cycles, and 168 patients (47%) were planned to receive 6 cycles of chemotherapy. Within these 2 groups, 143 (76%) and 98 patients (58%) completed 4 and 6 chemotherapy cycles, respectively. The demographic and baseline disease characteristics were balanced, except for race (Asian vs other), smoking status, and PD-L1 status (TC3 or IC3 vs other). The landmark PFS analysis showed no difference between patients who completed 4 vs 6 cycles (HR 0.83 [95% CI: 0.59, 1.17). The sensitivity analyses, which adjusted for race, smoking status, or PD-L1, showed comparable results (adjusted HRs of 0.80, 0.85, or 0.91, respectively).

      8eea62084ca7e541d918e823422bd82e Conclusion

      In the atezolizumab + bevacizumab + chemotherapy arm, patients who received 4 cycles of chemotherapy appeared to have similar PFS benefit as those who received 6 cycles of chemotherapy. Detailed analyses of varying chemotherapy cycles, safety analyses, and impact on OS will be presented.

      6f8b794f3246b0c1e1780bb4d4d5dc53

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    P2.13 - Targeted Therapy (Not CME Accredited Session) (ID 962)

    • Event: WCLC 2018
    • Type: Poster Viewing in the Exhibit Hall
    • Track:
    • Presentations: 1
    • Moderators:
    • Coordinates: 9/25/2018, 16:45 - 18:00, Exhibit Hall
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      P2.13-40 - ABP 215 and Bevacizumab in NSCLC Patients: Time Course and Magnitude of Response in the Phase 3 Comparative Trial (MAPLE) (ID 13813)

      16:45 - 18:00  |  Author(s): Jerome Goldschmidt Jr.

      • Abstract
      • Slides

      Background

      ABP 215 (MVASITM (bevacizumab-awwb)) has been approved as the first biosimilar to bevacizumab. Here we present the results of efficacy analyses from the phase 3 comparative trial of ABP 215 and bevacizumab.

      a9ded1e5ce5d75814730bb4caaf49419 Method

      The phase 3 study was a double-blind trial designed to demonstrate clinical equivalence of ABP 215 and bevacizumab (BEV) in patients with NSCLC. Adult patients with non-squamous NSCLC receiving first-line chemotherapy with carboplatin and paclitaxel were randomized 1:1 to ABP 215 or BEV (15 mg/kg IV Q3W for up to 6 cycles). Clinical evaluations included efficacy, safety, PK, and immunogenicity. Results of the primary analysis have been reported previously. A post hoc analysis of individual patient response data was performed using independent, central radiologists’ evaluations of the time course and magnitude of tumor response. Imaging assessments of tumor response were completed using RECIST v1.1 to generate waterfall plots for the magnitude of target lesion response.

      4c3880bb027f159e801041b1021e88e8 Result

      The proportion of patients with an objective response was similar between ABP 215 and BEV treatment groups by week 7, 13, 19, and overall. By week 19, 36.9% of patients receiving ABP 215 and 39.2% of patients receiving BEV had a first objective response. The risk difference in ORR by week 19 was -2.6% (95% CI: -10.05%, 4.93%). Both groups had a highly similar magnitude of target lesion response, as depicted in the Figure below.fig 1.jpg

      8eea62084ca7e541d918e823422bd82e Conclusion

      The analyses of the time to response and the magnitude of reduction of target lesions in the phase 3 comparative trial provide further support for clinical similarity of ABP 215 and bevacizumab.

      6f8b794f3246b0c1e1780bb4d4d5dc53

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