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Laura Q Chow
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MA 05 - Immuno-Oncology: Novel Biomarker Candidates (ID 658)
- Event: WCLC 2017
- Type: Mini Oral
- Track: Immunology and Immunotherapy
- Presentations: 1
- Moderators:Yoichi Nakanishi, P. Mitchell
- Coordinates: 10/16/2017, 15:45 - 17:30, Room 303 + 304
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MA 05.05 - Discussant - MA 05.01, MA 05.02, MA 05.03, MA 05.04 (ID 10821)
15:45 - 17:30 | Presenting Author(s): Laura Q Chow
- Abstract
- Presentation
Abstract not provided
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OA 17 - Immunotherapy II (ID 683)
- Event: WCLC 2017
- Type: Oral
- Track: Immunology and Immunotherapy
- Presentations: 2
- Moderators:Yuichiro Ohe, Anne Tsao
- Coordinates: 10/18/2017, 14:30 - 16:15, Room 301 + 302
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OA 17.02 - Updated Efficacy Results From the BIRCH Study: First-Line Atezolizumab Therapy in PD-L1–Selected Patients With Advanced NSCLC (ID 8006)
14:30 - 16:15 | Author(s): Laura Q Chow
- Abstract
- Presentation
Background:
The anti–PD-L1 mAb atezolizumab blocks the interactions between PD-L1 and its receptors, PD-1 and B7.1, thus restoring anti-tumor immunity. A Phase II study of atezolizumab monotherapy was conducted across multiple lines of therapy in PD-L1–selected patients with advanced NSCLC (BIRCH; NCT02031458). The primary analyses showed meaningful and durable clinical benefit with atezolizumab monotherapy in 1L and 2L+ NSCLC. Here we present updated survival data (median follow-up, 29.7 months) in patients receiving 1L atezolizumab.
Method:
Eligible patients had chemotherapy-naive, locally advanced or metastatic NSCLC without CNS metastases. Prior TKI therapy was required in patients with EGFR mutation or ALK rearrangement. PD-L1 expression on tumor cells (TC) and tumor-infiltrating immune cells (IC) was centrally evaluated (VENTANA SP142 IHC assay). Patients who were TC2/3 or IC2/3 (PD-L1 expression on ≥ 5% of TC or IC) were enrolled. Atezolizumab 1200 mg was administered IV q3w until disease progression or unacceptable toxicity. The primary endpoint was independent review facility (IRF)–assessed ORR. Secondary endpoints included investigator (INV)-assessed ORR, DOR, PFS (RECIST v1.1) and OS.
Result:
With a median follow-up of 29.7 months, median OS was 26.9 months (TC3 or IC3 subgroup) and 24.0 months (all treated patients); INV-assessed ORR was 35% (TC3 or IC3 subgroup) and 26% (all treated patients; Table). Among evaluable patients, the ORR was 31% for mutant EGFR (4/13) vs 23% for wild-type EGFR patients (24/103), and 31% for mutant KRAS (10/32) vs 24% for wild-type KRAS patients (16/66). No new safety signals were observed.
Conclusion:
With more than 2 years of follow-up, atezolizumab continued to demonstrate durable clinical activity in 1L NSCLC, regardless of EGFR and KRAS mutational status. These data suggest that atezolizumab monotherapy has promising activity as a frontline therapy. Ongoing Phase III trials are evaluating atezolizumab-based regimens vs chemotherapy in 1L NSCLC.Endpoint (95% CI) TC3 or IC3[a ](n = 65) TC2 or IC2[b] (n = 73) All Treated Patients (N = 138) INV-assessed ORR, % 35% (23.9, 48.2) 18% (9.8, 28.5) 26% (19.0, 34.2) EGFR mutant/wild-type, % 25%/33% 33%/15% 31%/23% KRAS mutant/wild-type, % 38%/33% 25%/15% 31%/24% mDOR, mo 16.5 (8.5, NE) 12.5 (8.3, 17.9) 13.1 (9.9, NE) mOS, mo 26.9 (12.0. NE) 23.5 (18.1, NE) 24.0 (18.1, 31.9) 12-mo OS rate, % 61% (49.0, 74.0) 71% (59.8, 81.5) 66% (58.1, 74.6) 24-mo OS rate, % 52% (39.3, 65.2) 49% (37.0, 61.1) 50% (41.5, 59.2) 30-mo OS rate, % 48% (35.3, 61.5) 39% (27.2, 51.2) 43% (34.3, 52.1) mPFS, mo 7.3 (4.9, 12.0) 7.6 (4.0, 9.7) 7.6 (5.7, 9.7) 12-mo PFS rate, % 38% (25.1, 49.9) 30% (19.2, 41.2) 34% (25.3, 41.9) 24-mo PFS rate, % 28% (16.5, 40.0) 13% (4.5, 21.5) 20% (12.9, 27.5) 30-mo PFS rate, % 19% (5.4, 33.5) 9% (1.4, 16.4) 14% (6.5, 21.9) NE, not estimable. [a ]TC ≥ 50% or IC ≥ 10% PD-L1–expressing cells.[b ]TC2/3 or IC2/3 excluding TC3 or IC3.
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OA 17.03 - First-Line Nivolumab plus Platinum-Based Doublet Chemotherapy for Advanced NSCLC: CheckMate 012 3-Year Update (ID 9043)
14:30 - 16:15 | Author(s): Laura Q Chow
- Abstract
- Presentation
Background:
Platinum-based doublet chemotherapy is the standard-of-care first-line treatment for most patients with advanced NSCLC, but responses are not durable (~4.5–6 mo). Chemotherapy may sensitize NSCLC tumors to immune checkpoint inhibitors. Nivolumab, a fully human programmed death (PD)-1 antibody, demonstrated long-term survival benefit in patients with previously treated advanced NSCLC. Here we report the 3-year update of safety and efficacy of first-line nivolumab combined with chemotherapy in the phase 1 CheckMate 012 study (NCT01454102).
Method:
Chemotherapy-naïve patients with stage IIIB/IV NSCLC were randomly assigned based on histology in 3 cohorts combining nivolumab Q3W with 3 platinum-based doublet chemotherapy regimens: nivolumab 10 mg/kg + gemcitabine-cisplatin (all squamous histology), nivolumab 10 mg/kg + pemetrexed-cisplatin (all non-squamous), and nivolumab 10 mg/kg or 5 mg/kg + paclitaxel-carboplatin (any histology). After 4 cycles of nivolumab plus chemotherapy, patients received nivolumab monotherapy until progression or unacceptable toxicity. The primary objective was safety. ORR, PFS, and OS were secondary/exploratory endpoints.
Result:
56 patients were treated. Median age was 63.5 years, 46% were male, and 14% were never-smokers; 29% of tumors had squamous histology. At database lock (September 19, 2016) the minimum follow-up was 45.5 mo. Median duration of chemotherapy treatment was ~12 weeks (4 cycles; range: 3–18 weeks) and median duration of nivolumab treatment was 17–22 weeks across cohorts (range: 3–204). No new safety signals were observed in patients receiving nivolumab maintenance compared with the September 2014 database lock. ORR was 46%. Median duration of response was 10.4 mo (95% CI: 5.1, 26.3). Median PFS was 6.0 mo (95% CI: 4.8, 8.3). Median OS was 19.2 mo (95% CI: 14.1, 23.8), and the 3-year OS rate was 25%. ORR and OS were similar in patients with tumor PD-L1 expression <1% (n=23) vs ≥1% (n=23): ORR 48% vs 52%; median OS 19.2 mo (95% CI: 12.2, 23.8) vs 20.2 mo (95% CI: 10.9, 27.2). The 3-year OS rate was 22% in both PD-L1 expression subgroups.
Conclusion:
Nivolumab plus chemotherapy resulted in prolonged survival in a subset of patients, with a 3-year OS rate of 25%. In all patients, ORR and OS were similar irrespective of tumor PD-L1 expression. These results support further evaluation of nivolumab-chemotherapy combinations as first-line treatment for advanced NSCLC, which are being explored in CheckMate 227 (NCT02477826).
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P1.01 - Advanced NSCLC (ID 757)
- Event: WCLC 2017
- Type: Poster Session with Presenters Present
- Track: Advanced NSCLC
- Presentations: 1
- Moderators:
- Coordinates: 10/16/2017, 09:30 - 16:00, Exhibit Hall (Hall B + C)
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P1.01-012 - Ceritinib in Anaplastic Lymphoma Kinase (ALK)+ NSCLC Patients Pretreated With Only Crizotinib: ASCEND-1 Subgroup Analysis (ID 8972)
09:30 - 16:00 | Author(s): Laura Q Chow
- Abstract
Background:
In phase 1 ASCEND-1 study (NCT01283516), ceritinib 750 mg/day (fasted) demonstrated durable whole-body and intracranial responses in both anaplastic lymphoma kinase inhibitor (ALKi)-naïve and ALKi-pretreated patients with ALK-rearranged non-small cell lung cancer (NSCLC). Here, we report the efficacy and safety of ceritinib in patients who were pretreated with crizotinib only from the ASCEND-1 study.
Method:
Patients with ALK+ NSCLC who were enrolled globally received ceritinib 750 mg/day (fasted). Efficacy and safety were evaluated in a subset of patients who had received prior crizotinib only (no other prior antineoplastic therapy). Data cut-off was May 03, 2016.
Result:
Overall, 246 patients with ALK+ NSCLC (83 ALKi-naïve and 163 ALKi-pretreated) received ≥1 dose of ceritinib, of whom, 26 had received prior crizotinib only. Among the 26 crizotinib-pretreated patients, 11 (42.3%) had baseline brain metastases, of which, 7 received prior radiotherapy, 6 (23.1%) had an ECOG performance status of 0, and 24 (92.3%) patients had stage IV disease. The median time from initial diagnosis to ceritinib initiation was 10.5 months (range, 2.4-33.0). At data cut-off, the median duration of exposure (range) was 41.0 weeks (2.9-180.4). In the 26 crizotinib-pretreated patients, per investigator assessment, the overall response rate was 65.4% (95% confidence interval [CI]: 44.3, 82.8), and the disease control rate was 80.8% (95% CI: 60.6, 93.4) (Table). The most frequently reported grade 3/4 adverse events (AEs), regardless of study drug relationship, were ALT increased (30.8%), AST increased (15.4%), diarrhea (11.5%), nausea (7.7%), fatigue (7.7%), and blood alkaline phosphatase increased (7.7%). All 26 patients discontinued treatment due to disease progression (n=12), consent withdrawal (n=6), AEs (n=2), administrative problems (n=4), or death (n=2).
*Median value derived from summary statistics; **Median value estimated by Kaplan-Meier method.Investigator Assessment N=26 Blinded Independent Review Committee Assessment N=26 Best overall response Complete response (CR), n (%) 1 (3.8%) 1 (3.8%) Partial response (PR), n (%) 16 (61.5%) 15 (57.7%) Stable disease (SD), n (%) 4 (15.4%) 5 (19.2%) Progressive disease (PD), n (%) 2 (7.7%) 1 (3.8%) Unknown, n (%) 3 (11.5%) 4 (15.4%) Overall response rate (ORR), % [95% CI] 65.4% [44.3-82.8] 61.5% [40.6-79.8] Disease control rate (DCR), % [95% CI] 80.8% [60.6-93.4] 80.8% [60.6-93.4] Median time to response*, weeks [95% CI] 6.1 [5.1-23.6] 6.4 [5.1-14.0] Median DOR**, months [95% CI] 8.3 [4.2-11.2] 8.5 [3.0-13.6] Median PFS**, months [95% CI] 8.5 [5.3-9.9] 8.2 [4.4-15.2]
Conclusion:
Ceritinib demonstrated durable efficacy in crizotinib-pretreated patients with ALK-rearranged NSCLC. Safety was consistent with the overall ASCEND-1 study population.
