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W.L. Akerley
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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)
16:00 - 17:30 | Author(s): W.L. Akerley
- 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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P2.06 - Poster Session with Presenters Present (ID 467)
- Event: WCLC 2016
- Type: Poster Presenters Present
- Track: Scientific Co-Operation/Research Groups (Clinical Trials in Progress should be submitted in this category)
- Presentations: 1
- Moderators:
- Coordinates: 12/06/2016, 14:30 - 15:45, Hall B (Poster Area)
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P2.06-014 - Phase 2 Study of Glesatinib or Sitravatinib with Nivolumab in Non-Small Cell Lung Cancer (NSCLC) after Checkpoint Inhibitor Therapy (ID 4795)
14:30 - 15:45 | Author(s): W.L. Akerley
- Abstract
Background:
Combination therapy with agents that target the molecular and cellular mechanisms of resistance to checkpoint inhibitor therapy (CIT) is a rational approach to restoring or improving the efficacy of CIT in patients with immunotherapy resistant NSCLC. Glesatinib, a tyrosine kinase inhibitor (TKI), which targets Axl, MER and MET RTKs expressed on macrophages and antigen-presenting-cells within the tumor microenvironment (TME), may reverse the immunosuppressive TME and enhance anti-tumor T and NK cell responses by enhancing antigen presentation and T cell effector function. Sitravatinib, also a TKI, which targets VEGFR2 and KIT as well as Axl, MER and MET, may further enhance anti-tumor activity by VEGFR2 and KIT inhibition mediated reduction of regulatory T cells and myeloid-derived suppressor cells (MDSCs). Given these pleiotropic immune activating effects, the combination of glesatinib or sitravatinib with nivolumab is a rational approach to restoring or enhancing the clinical activity of CIT in patients with immunotherapy resistant NSCLC.
Methods:
This open-label Phase 2 study evaluates the tolerability and clinical activity of the investigational agents, glesatinib or sitravatinib in combination with nivolumab in separate cohorts of patients with non-squamous NSCLC who have experienced progression of disease on or after treatment with CIT. The study begins with a limited dose escalation evaluation of each investigational agent in combination with nivolumab to determine the dose levels to be used in Phase 2. The primary objective is to assess the clinical activity of the combination regimens using the Objective Response Rate (ORR) by RECIST 1.1. Other objectives include safety, tolerability, pharmacokinetics and changes in circulating and tumor cell PD-L1, circulating and tumor infiltrating immune cell populations, cytokines and gene expression signatures. Enrollment into each Phase 2 treatment arm is stratified by prior outcome of CIT (e.g., clinical benefit versus progression of disease in ≤12 weeks). The investigational agents are administered orally in continuous regimens; nivolumab is administered intravenously, 3 mg/kg every 2 weeks. The sample sizes for the treatment arms are based on two-stage Simon Optimal Designs. Status: The US IND opened in June 2016.
Results:
Section not applicable
Conclusion:
Section not applicable
