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C. McKay
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P1.12 - Poster Session/ Community Practice (ID 232)
- Event: WCLC 2015
- Type: Poster
- Track: Community Practice
- Presentations: 1
- Moderators:
- Coordinates: 9/07/2015, 09:30 - 17:00, Exhibit Hall (Hall B+C)
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P1.12-011 - Treatment Patterns and Overall Survival for Advanced NSCLC Following Platinum-Based Chemotherapy in US Community Oncology Clinical Practice (ID 3284)
09:30 - 09:30 | Author(s): C. McKay
- Abstract
Background:
While clinical guidelines provide clinical decision support for selection of agent, combination, and order of administration, there are few studies that provide a comprehensive description of contemporary advanced NSCLC treatment patterns in patients following platinum therapy over time; there are limited recent US data on practice patterns and outcomes for advanced NSCLC patients following chemotherapy. The purpose of this study is (1) to describe patient flow from advanced NSCLC diagnosis to anti-cancer treatment following completion of a platinum regimen, and if EGFR mutation or ALK translocation positive, an appropriate TKI; (2) to describe the characteristics of advanced NSCLC patients treated with anti-cancer therapy following platinum therapy and, if EGFR mutation or ALK translocation positive, an appropriate TKI; to describe anti-cancer treatment patterns following completion of platinum therapy and, if EGFR mutation or ALK translocation positive, an appropriate TKI.
Methods:
Retrospective EMR database cohort study using data from a cloud-based Oncology Electronic Medical Record (EMR) system with 220 cancer clinics, 700 community-based cancer treatment clinics, 1750 clinicians, and 725,000 active cancer patients, representing 17% of incident cases in the United States. The data represents lab values and physician notes from both structured and unstructured data. Variables of interest include demographic, disease-related, biomarker testing-related, anti-cancer treatment. Treatment patterns include regimens by line of therapy, agents and number of doses administered or prescribed, and distribution of dosage strengths. Analyses will be conducted by histology and EGFR/ALK status (among non-squamous cell carcinoma patients). Data will be analyzed descriptively. Overall survival, if data are available, will be estimated using a series of Kaplan Meier curves, with median OS (95% confidence interval) reported.
Results:
Approximately 1598 patients with advanced NSCLC initiating a line of therapy after completing a platinum regimen and, if EGFR mutation or ALK translocation positive, an appropriate TKI between January 1, 2013 and October 31, 2014 will be followed until April 30, 2015. Preliminary results identified 6536 patients with advanced NSCLC; of these, 5048 (77.2%) received any 1L treatment after advanced NSCLC diagnosis with 3786 (57.9%) receiving platinum-based chemotherapy as 1L treatment. Among the final cohort of patients (n=1598), the majority were men (54.0%) initially diagnosed with stage IV disease (68.5%) at age 66. The distribution of histological subtypes in the sample included non-squamous (74.4%), squamous (21.0%), and NOS (4.6%). Treatment patterns will be described according to histology and biomarker status at index date. Patient characteristics and overall survival will be reported by histology, biomarker status at index date, and regimen type.
Conclusion:
Results from this study will describe treatment patterns in the second-line setting, prior to the introduction of newer therapies, such as anti-PD1/PD-L1 inhibitors and angiogenesis inhibitors. Additionally, it will advance current understanding of the specific patterns of 2L care for patients being treated with anti-cancer therapy in the real world of community settings.
