Virtual Library
Start Your Search
C. Barrios
Author of
-
+
P2.02 - Poster Session with Presenters Present (ID 462)
- Event: WCLC 2016
- Type: Poster Presenters Present
- Track: Locally Advanced NSCLC
- Presentations: 1
- Moderators:
- Coordinates: 12/06/2016, 14:30 - 15:45, Hall B (Poster Area)
-
+
P2.02-030 - Consolidation Chemotherapy Following Concurrent Chemoradiation for Stage III Non-Small Cell Lung Cancer: A Brazilian Multicentric Cohort (ID 4670)
14:30 - 14:30 | Author(s): C. Barrios
- Abstract
Background:
Locally advanced stage III grossly accounts for 25% newly diagnosed non-small cell lng cancer (NSCLC) cases. Albeit some patients (pts) are amenable to surgical resection, most will be treated with concurrent chemoradiation (CRT), whilst the addition of consolidation chemotherapy (CC) is still a debatable topic. We decided to look into the impact of CC in stage III NSCLC Brazilian pts treated in the daily clinical practice.
Methods:
We retrospectively collected data of stage III NSCLC pts treated in five different Brazilian cancer institutions from Jan/2007 to Dec/2011, whom have received CRT followed or not by CC. Eligible pts were ≥18yo and must have been treated with cisplatin or carboplatin plus etoposide, paclitaxel or vinorelbine, concurrently with thoracic irradiation (RT). Patients treated with surgery or neoadjuvant chemotherapy were excluded. Primary endpoint was overall survival (OS) from the date of diagnosis. Association between CC and clinical variables and demographics were evaluated by Pearson´s Chi-square test (Χ²). Survival curves were calculated by Kaplan-Meier method and compared by log-rank test. Univariate and multivariate analysis were made using Cox proportional model (CPM). P-values<0.05 were deemed statistically significant.
Results:
We collected data from 165 pts. Median age was 60yo (range: 27-79) and most pts were male (69.1%), Caucasian (77.9%), current or former smoker (93.3%), and staged as IIIB (52.7%). Adenocarcinoma was the most common histologic type (47.9%). Weight loss>5% and ECOG-PS 2 were observed in 39.1% (n=61) and 14.6% (n=24), respectively. Median follow-up was 25 mo. CC was administered to 27 pts. The only variable associated with CC was T stage (Χ²(4) = 11.410, p=0.022), with more T3 tumors receiving CC than expected. We observed no statistically significant difference in OS between patients treated or not with CC (p=0.211), although 3-year OS rate was numerically higher in CC pts (40% vs. 31%). Median OS in was 24 and 25 months in CC and no CC groups, respectively (HR 1.408, 95%CI 0.814-2.434). A total delivered RT dose ≥ 61Gy was the only variable independently associated with improved survival (HR 0.617, 95%CI 0.419-0.909, p=0.012).
Conclusion:
CC did not improve OS in stage III NSCLC patients after concurrent CRT. RT dose < 61 Gy negatively impacted OS.
-
+
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)
-
+
P2.06-033 - Long-Term Safety and Efficacy of Darbepoetin Alfa in Subjects with Advanced Stage NSCLC Receiving Multi-Cycle Chemotherapy (ID 3765)
14:30 - 14:30 | Author(s): C. Barrios
- Abstract
Background:
Darbepoetin alfa (DA) is an erythropoiesis-stimulating agent (ESA) that has been shown to increase hemoglobin levels and reduce the rate of transfusions in patients with chemotherapy-induced anemia (CIA). Most studies have not shown an association between ESA use and poor outcomes, but some clinical trials have reported increased mortality and/or tumor progression. This trial was therefore designed to address the safety of DA for CIA in patients with non-small cell lung cancer (NSCLC).
Methods:
Study 20070782 is a randomized, double-blind, noninferiority trial to compare DA with placebo, and is enrolling patients with NSCLC with CIA. Eligible patients are ≥ 18 years old with Eastern Cooperative Oncology Group (ECOG) status ≤ 1, stage IV NSCLC, no prior adjuvant/neoadjuvant NSCLC therapy, ≥ 2 cycles first-line chemotherapy planned (≥ 6 weeks total), and screening hemoglobin ≤ 11 g/dL. Approximately 3,000 patients from up to 500 global sites will be randomized 2:1 to DA (500 mcg) or placebo every 3 weeks (Q3W) until disease progression or end of chemotherapy. At hemoglobin > 12 g/dL, study drug is withheld until hemoglobin ≤ 12 g/dL. Transfusions are allowed when necessary. Endpoints include overall survival (OS; primary) and progression-free survival (PFS; secondary), and will be analyzed when ~2,700 deaths have occurred. Additional safety endpoints include tumor response and rate of thromboembolic events. Superiority of DA to placebo in transfusion rates will be tested if noninferiority is achieved for OS and PFS.
Results:
As of April 15, 2016, a total of 2,215 patients have enrolled. The independent data monitoring committee has conducted 9 reviews of unblinded data (which included a planned formal interim analysis at 40% of planned total number of 2,700 deaths to test for harm), and has recommended continuation of the trial without changes.
Conclusion:
Study 20070782 is the largest clinical trial in NSCLC to date, and will provide comprehensive data on the safety and efficacy of DA in patients with CIA.
-
+
PL04a - Plenary Session: Immune Checkpoint Inhibitors in Advanced NSCLC (ID 430)
- Event: WCLC 2016
- Type: Plenary
- Track: Chemotherapy/Targeted Therapy/Immunotherapy
- Presentations: 1
- Moderators:J. Soria, C. Zhou
- Coordinates: 12/07/2016, 08:45 - 09:40, Hall D (Plenary Hall)
-
+
PL04a.02 - OAK, a Randomized Ph III Study of Atezolizumab vs Docetaxel in Patients with Advanced NSCLC: Results from Subgroup Analyses (Abstract under Embargo until December 7, 7:00 CET) (ID 5822)
08:55 - 09:05 | Author(s): C. Barrios
- Abstract
- Presentation
Background:
Atezolizumab inhibits PD-L1 binding to its receptors PD-1 and B7.1, thereby restoring tumor-specific T-cell immunity. Primary analysis of the Phase III OAK study in previously-treated NSCLC revealed superior survival for atezolizumab vs docetaxel in the ITT population (mOS, 13.8 vs 9.6 months; HR, 0.73) and in patients expressing ≥1% PD-L1 on TC or IC (TC1/2/3 or IC1/2/3; mOS, 15.7 vs 10.3; HR, 0.74). Here we present further subgroup analyses.
Methods:
OAK evaluated atezolizumab vs docetaxel in an unselected NSCLC population who had failed prior platinum-containing chemotherapy. Patients were stratified by PD-L1 expression, prior chemotherapy regimens and histology, and randomized 1:1 to atezolizumab (1200 mg) or docetaxel (75 mg/m[2]) IV q3w. PD-L1 expression by IHC and mRNA was centrally evaluated by VENTANA SP142 IHC assay and Fluidigm, respectively. Data cutoff, July 7, 2016.
Results:
For the first 850 of 1225 randomized patients (primary study population), OS was improved with atezolizumab vs docetaxel regardless of histology and this benefit was observed across PD-L1 subgroups within each histology (Table). PD-L1 gene expression showed a similar association with OS as PD-L1 IHC. In nonsquamous patients ORR was 14.4% vs 15.2%; in squamous patients ORR was 11.6% vs 8.2% (atezolizumab vs docetaxel). OS benefit vs docetaxel was seen across subgroups including patients with treated baseline brain metastases (n=85; mOS 20.1 vs 11.9 mo; HR 0.54, 95% CI 0.63-0.89) and never smokers (n=156; mOS 16.3 vs 12.6 mo, HR 0.71, 95% CI 0.47-1.08). Further secondary endpoints and exploratory biomarker analyses for these subgroups and by age and EGFR/KRAS status will be presented.
Conclusion:
OAK demonstrated clinically relevant improvements with atezolizumab in the ITT population, including in both histology subgroups regardless of PD-L1 expression (measured by IHC or tumor gene expression), and among other subgroups including never smokers and in patients with baseline brain metastases.OS Atezolizumab Docetaxel HR[a]95% CI n Median, mo n Median, mo Nonsquamous TC3 or IC3 49 22.5 47 8.7 0.35(0.21-0.61) TC2/3 or IC2/3 89 18.7 99 11.3 0.61(0.42-0.88) TC1/2/3 or IC1/2/3 171 17.6 162 11.3 0.72(0.55-0.95) TC0 and IC0 140 14.0 150 11.2 0.75(0.57-1.00) All 313 15.6 315 11.2 0.73(0.60-0.89) Squamous TC3 or IC3 23 17.5 18 11.6 0.57(0.27-1.20) TC2/3 or IC2/3 40 10.4 37 9.7 0.76(0.45-1.29) TC1/2/3 or IC1/2/3 70 9.9 60 8.7 0.71(0.48-1.06) TC0 and IC0 40 7.6 49 7.1 0.82(0.51-1.32) All 112 8.9 110 7.7 0.73(0.54-0.98) [a]Unstratified HRs. TC=tumor cell, IC=tumor-infiltrating immune cell
Only 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.
