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Wei Lin
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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): Wei Lin
- Abstract
- Presentation
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
6f8b794f3246b0c1e1780bb4d4d5dc53Only Members that have purchased this event or have registered via an access code will be able to view this content. To view this presentation, please login, select "Add to Cart" and proceed to checkout. If you would like to become a member of IASLC, please click here.
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P2.17 - Treatment of Locoregional Disease - NSCLC (Not CME Accredited Session) (ID 966)
- 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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P2.17-27 - IMpower030: Phase III Study Evaluating Neoadjuvant Treatment of Resectable Stage II-IIIB NSCLC with Atezolizumab + Chemotherapy (ID 12087)
16:45 - 18:00 | Author(s): Wei Lin
- Abstract
Background
A standard of care for resectable early-stage non-small cell lung cancer (NSCLC) is surgery alone or in combination with adjuvant or neoadjuvant platinum-based doublet chemotherapy (PT-DC). Nevertheless, 30%-70% of patients develop recurrence and die due to disease progression, highlighting the unmet need for more efficacious treatment regimens. Atezolizumab, an anti–programmed death-ligand 1 (anti–PD-L1) antibody that reinvigorates the anti-cancer immune response, has shown efficacy as monotherapy and in combination with chemotherapy in advanced NSCLC. On the basis of this activity, it is thought that the combination of atezolizumab and PT-DC may provide clinical benefit in the neoadjuvant setting by enhancing cancer cell killing and eradicating micro-metastases prior to surgery, thereby reducing the risk of disease recurrence. The objective of IMpower030 (NCT03456063) is to evaluate the efficacy and safety of atezolizumab in combination with PT-DC as neoadjuvant treatment for patients with resectable early-stage NSCLC.
a9ded1e5ce5d75814730bb4caaf49419 Method
IMpower030 is a global, Phase III, multicenter, double-blind, randomized study in patients with histologically or cytologically confirmed, resectable stage II, IIIA, or select IIIB (T3N2) NSCLC (per AJCC/UICC, 8th ed). Study inclusion requires measurable disease per RECIST v1.1, ECOG PS of 0/1, and eligibility for R0 resection with curative intent and PT-DC. Patients who have received prior therapy for lung cancer or who present with non-squamous NSCLC with activating EGFR mutations or ALK translocation are excluded. Approximately 302 patients will be randomized to receive 4 cycles of neoadjuvant atezolizumab (1200 mg Q3W, Arm A) or placebo (Arm B) in combination with an investigator-selected PT-DC regimen. Following surgical resection and pathology response assessment, treatment assignment will be unblinded; patients in Arm A will receive adjuvant treatment with atezolizumab for up to 16 cycles or until disease recurrence or unacceptable toxicity, whereas patients in Arm B will receive best supportive care and scheduled observational follow-up. The primary efficacy endpoint is major pathological response, defined as ≤ 10% residual viable tumor tissue at time of resection as assessed by an independent central pathology laboratory. Secondary efficacy endpoints include OS, ORR, investigator-assessed event-free survival and disease-free survival per RECIST v1.1, pathological complete response and patient-reported outcomes. Exploratory biomarkers will also be evaluated.
4c3880bb027f159e801041b1021e88e8 Result
Section not applicable
8eea62084ca7e541d918e823422bd82e Conclusion
Section not applicable
6f8b794f3246b0c1e1780bb4d4d5dc53
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PL02 - Presidential Symposium - Top 5 Abstracts (ID 850)
- Event: WCLC 2018
- Type: Plenary Session
- Track: Advanced NSCLC
- Presentations: 1
- Moderators:
- Coordinates: 9/25/2018, 08:15 - 09:45, Plenary Hall
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PL02.07 - IMpower 133: Primary PFS, OS and Safety in a PH1/3 Study of 1L Atezolizumab + Carboplatin + Etoposide in Extensive-Stage SCLC (ID 12892)
09:00 - 09:10 | Author(s): Wei Lin
- Abstract
- Presentation
Background
First-line (1L) standard-of-care treatment for extensive-stage small cell lung cancer (ES-SCLC) is platinum (carboplatin or cisplatin) with etoposide. Despite high initial response rates, there has been limited progress in the last two decades and outcomes remain poor with a median overall survival (OS) of ~10 months. IMpower133 (NCT02763579), a global Phase 1/3, double-blind, randomized, placebo-controlled trial evaluated efficacy and safety of adding atezolizumab, a humanized monoclonal anti–PD-L1 antibody, or placebo to 1L carboplatin and etoposide in ES-SCLC.
Patients with measurable (RECIST v1.1) ES-SCLC, ECOG performance status 0 or 1, who had not received prior systemic treatment for ES-SCLC were enrolled. PD-L1 immunohistochemical testing was not required. Patients were randomized 1:1 to receive four 21-day cycles of carboplatin (AUC 5 mg/mL/min IV, Day 1) plus etoposide (100 mg/m2 IV, Days 1-3) with either atezolizumab (1200 mg IV, Day 1) or placebo, followed by maintenance therapy with atezolizumab or placebo until intolerable toxicity or progressive disease per RECIST v1.1. Patients meeting predefined criteria could receive treatment beyond progression. Co-primary endpoints were OS and investigator-assessed progression-free survival (PFS). Adverse events (AEs) were graded per NCI-CTCAE v4.0. Blood-based tumor mutation burden (bTMB) was assessed using prespecified cutoffs of ≥16 vs. <16 and ≥10 vs. <10 mutations/Mb.
In total, 201 patients were randomized to the atezolizumab group, and 202 to the placebo group. Median follow-up was 13.9 months. Median OS was 12.3 months in the atezolizumab group and 10.3 months in the placebo group (hazard ratio [HR] 0.70 [95% confidence interval (CI): 0.54, 0.91; P=0.0069]). Median PFS was 5.2 months and 4.3 months, respectively (HR 0.77 [95% CI: 0.62, 0.96; P=0.017]). OS and PFS benefits were consistent across key patient subgroups. Investigator-assessed confirmed objective response rates were 60.2% and 64.4% in the atezolizumab and placebo groups, respectively; median duration of response, 4.2 and 3.9 months. Exploratory analyses showed OS survival benefits in subgroups above and below prespecified bTMB cutoffs. Grade 3-4 treatment-related AEs were reported in 56.6% vs. 56.1% patients in atezolizumab vs. placebo groups, respectively; serious treatment-related AEs occurred in 22.7% and 18.9% patients, respectively.
Addition of atezolizumab to carboplatin and etoposide provided a significant improvement in OS and PFS in 1L ES-SCLC in an all-comer patient population. No unexpected safety signals were identified. Atezolizumab plus carboplatin and etoposide may represent a new standard regimen for patients with untreated ES-SCLC.
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