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MA06 - Locally Advanced NSCLC: Risk Groups, Biological Factors and Treatment Choices (ID 379)
- Event: WCLC 2016
- Type: Mini Oral Session
- Track: Locally Advanced NSCLC
- Presentations: 1
- Moderators:P. Van Houtte, M. Zemanová
- Coordinates: 12/05/2016, 16:00 - 17:30, Strauss 2
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MA06.10 - A Pooled Analysis Comparing the Outcomes of Elderly to Younger Patients on NCTN Trials of Concurrent CCRT for Stage 3 NSCLC (ID 4219)
17:06 - 17:12 | Author(s): N. Ready
- Abstract
- Presentation
Background:
Concurrent chemoradiotherapy (CCRT) is the standard treatment (TRT) for stage 3 NSCLC. Elderly patients (pts) are common, may have increased toxicity,& poorer results from CCRT
Methods:
Individual patient data (IPD) from NCTN phase 2/3 trials of CCRT for stage 3 NSCLC from 1990-2012 was collected. We compared the overall survival (OS), progression-free survival (PFS), & adverse events (AE’s) for pts age ≥70 years (yrs) (elderly) vs. <70 yrs (younger). Unadjusted & adjusted Hazard Ratios (HRs) for survival time & their confidence intervals (CIs) were estimated by single-predictor & multivariable Cox models. Unadjusted & adjusted Odds Ratio (OR) for AE’s & their CIs were obtained from single-predictor & multivariable logistic regression models
Results:
IPD from 16 trials were analyzed; 2,768 pts were younger & 832 were elderly. Median OS & PFS for elderly & younger pts are in the table. In the unadjusted & multivariable models elderly pts had worse OS (HR=1.23; 95%CI =1.13-1.35, and 1.20; 95%CI=1.10-1.32, respectively). In the unadjusted & multivariable models, elderly & younger pts had a similar PFS (HR=1.02; 95% CI=0.94-1.11 and 1.01, 95% CI=0.92-1.10, respectively). Elderly pts had a higher rate of grade ≥3 AE’s in the unadjusted & multivariable models (OR=1.25; 95% CI=1.00-1.57 and 1.30; 95%CI=1.03-1.62, respectively). A lower percentage of elderly pts compared to younger completed TRT (47% and 57%, respectively; P<0.0001) & higher percentage stopped due to AE’s (20% and 13%; P<0.0001). Grade ≥ 3 AE’s (occurring at a rate ≥ 2.5%) with a higher rate in the elderly: neutropenia, dyspnea, fatigue, anorexia, vomiting, dehydration, hypoxia, hypotension, & pneumonitis (P<0.05).
a: Log-rank test for survival times, chi-square test for AE’s, and Fisher’s exact test for deaths. The P-values from these tests are unadjusted. b: Data available on 2,091 patientsAge ≥ 70yrs Age < 70 yrs P-value[a] Median OS (months) 17.0 20.7 < 0.01 Median PFS (months) 8.7 9.1 0.68 All toxicities grade ≥3 86% 84% 0.04 Hematologic AE’s grade ≥3 65% 61% 0.04 Non-hematologic AE’s ≥3 68% 62% <0.01 Grade 5 AE’s 9.0% 4.4% <0.01 TRT related deaths[b] 3.2% 2.0% 0.12
Conclusion:
Elderly pts in CCRT trials had worse OS, similar PFS, & a higher rate of severe AE's.
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MA09 - Immunotherapy Combinations (ID 390)
- Event: WCLC 2016
- Type: Mini Oral Session
- Track: Chemotherapy/Targeted Therapy/Immunotherapy
- Presentations: 1
- Moderators:M. Sebastian, E.B. Garon
- Coordinates: 12/06/2016, 14:20 - 15:50, Strauss 2
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MA09.05 - Nivolumab Alone or with Ipilimumab in Recurrent Small Cell Lung Cancer (SCLC): 2-Year Survival and Updated Analyses from the Checkmate 032 Trial (ID 4397)
14:50 - 14:56 | Author(s): N. Ready
- Abstract
- Presentation
Background:
Patients with SCLC and disease progression during/after first-line platinum-based chemotherapy have poor prognoses and limited treatment options. Nivolumab alone and in combination with ipilimumab has shown survival benefit and durable responses in multiple tumor types. Here we present updated results for the SCLC cohort of the phase 1/2 CheckMate 032 trial (NCT01928394), which was designed to evaluate nivolumab or nivolumab/ipilimumab in advanced solid tumors.
Methods:
Patients with advanced SCLC that progressed following ≥1 platinum-based chemotherapy regimens were assigned to receive nivolumab monotherapy (nivolumab-3 Q2W) or nivolumab/ipilimumab combination therapy (nivolumab-1/ipilimumab-3 or nivolumab-3/ipilimumab-1 Q3W for 4 cycles, then nivolumab-3 Q2W). Patients were eligible regardless of platinum sensitivity or tumor programmed death ligand 1 (PD-L1) expression. The primary endpoint was ORR. Additional endpoints were duration of response (DOR), OS, PFS, safety, and correlation of tumor PD-L1 expression with activity.
Results:
214 patients have been enrolled to date (nivolumab-3, n=98; nivolumab-1/ipilimumab-3, n=61; nivolumab-3/ipilimumab-1, n=55), including 96 and 118 patients treated with 1 or ≥2 prior regimens, respectively. Efficacy and safety data are shown (table). In the nivolumab-1/ipilimumab-3 cohort, ORR was 23% and 1-year OS was 43%. The proportion of patients with PD-L1–expressing tumors was substantially lower in previously treated SCLC in this study than that previously observed with pretreated NSCLC (16% vs 53%–54% with ≥1% PD-L1 expression). In SCLC, responses were observed regardless of PD-L1 expression. ORR and median OS were similar in patients treated with 1 or ≥2 prior regimens. Rate of discontinuation due to treatment-related AEs ranged from 5% to 11%; there were 3 treatment-related deaths. Figure 1
Conclusion:
Durable objective responses were observed with nivolumab and nivolumab/ipilimumab in patients with previously treated SCLC, and safety profiles were consistent with other tumor types. Updated efficacy (including 2-year OS and DOR), safety, and additional subgroup analyses will be presented from the August 2016 DBL.
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OA05 - Treatment Advances in SCLC (ID 373)
- Event: WCLC 2016
- Type: Oral Session
- Track: SCLC/Neuroendocrine Tumors
- Presentations: 1
- Moderators:A. Ardizzoni, J. Pujol
- Coordinates: 12/05/2016, 14:20 - 15:50, Strauss 2
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OA05.03 - Single-Agent Rovalpituzumab Tesirine, a Delta-Like Protein 3 (DLL3)-Targeted Antibody-Drug Conjugate (ADC), in Small-Cell Lung Cancer (SCLC) (ID 4648)
14:40 - 14:50 | Author(s): N. Ready
- Abstract
- Presentation
Background:
SCLC is one of the most deadly malignancies. Rovalpituzumab tesirine (SC16LD6.5, Rova-T) is a first-in-class ADC directed against DLL3, a novel target identified in tumor initiating cells and expressed in over 80% of SCLC cases.
Methods:
Seventy-four patients with progressive SCLC after at least one previous systemic therapy were enrolled in a first-in-human study (NCT01901653), irrespective of DLL3 expression, including 68 at active doses of 0.2-0.4 mg/kg administered intravenously every 3 or 6 weeks. Available archived tumor tissue (n=48) was assessed retrospectively by immunohistochemistry for DLL3.
Results:
Among 60 evaluable subjects, active dose levels resulted in a confirmed objective response rate (ORR) of 18% and a confirmed clinical benefit rate (CBR; stable disease or better) of 68%. Among 26 evaluable subjects with DLL3 expression in at least 50% of tumor cells (DLL3-high), confirmed ORR and CBR were 39% and 89%, respectively. Median duration of response was 5.6 months. One-year survival rates among all and DLL3-high subjects were 18% and 32%, respectively. Among primary sensitive relapse patients, confirmed ORR and CBR among all subjects were 24% (8/33) and 67% (22/33); and among DLL3-high subjects were 53% (8/15) and 100% (15/15), with one-year survival rates of 17% and 33%, respectively. Among primary resistant/refractory relapse patients, confirmed ORR and CBR among all subjects were 12% (3/25) and 72% (18/25); and among DLL3-high subjects were 18% (2/11) and 73% (8/11), with one-year survival rates of 21% and 29%, respectively. The most common grade 3 or higher toxicities included thrombocytopenia (12%), serosal effusions (11%), and skin reactions (8%). ADC pharmacokinetics were linear with a terminal half-life of 10 - 14 days and anti-therapeutic antibodies did not develop
Conclusion:
Rovalpituzumab tesirine demonstrates encouraging single-agent anti-tumor activity with a manageable safety profile, including among patients with disease resistant or refractory to primary chemotherapy. Further development of rovalpituzumab tesirine in SCLC is warranted.
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