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- W2996389723 abstract "e14106 Background: Improvements in survival for advanced-stage colorectal cancer (CRC) patients who receive chemotherapy have been reported. We compared survival rates for patients with 3+ vs. <3 lines of therapy using electronic medical records of a local oncology practice in Georgia, USA. Methods: The Georgia Cancer Specialist (GCS) EMR Database (1/1/2005–07/ 31/2010) was used. The database contains data on patient demographics, cancer diagnostic information, chemotherapy and non-chemotherapy drugs administered written prescriptions, chemotherapy/radiation protocols, chemotherapy protocol changes, office visit information, and hospitalizations. Patients newly diagnosed with CRC between 01/01/05 and 06/31/10 treated with systemic therapy for CRC were identified. Patients were followed from initial CRC diagnosis to death, loss to follow-up, or end of study. Patients were categorized by number of lines of therapy received (1, 2, 3+) and original stage at diagnosis (III b/c, IV, unknown). Survival following initial line of therapy was evaluated using Cox proportional hazards models controlling forstage at diagnosis, type of 1 st line treatment, and other patient characteristics. Results: The study included 704 patients with a median age of 63 years (age range 26-85 years) at diagnosis and 49% (n=345) female. 45% (n=317) and 42% (n=296) had stage IV and III b/c CRC at diagnosis, respectively. 53% (n=373) received only 1 st line treatment, 27% (n=190) received 1 st and 2 nd line treatment and 20% (n=141) received 3 rd line and beyond. The median follow up was 431 days and death was reported in 27%(n=190) of subjects. The multivariate Cox proportional hazard analysis indicated that there was no statistical difference in survival between patients who received 2 nd line of therapy vs. 3 plus lines of therapy (HR=1.42; p<0.067). Conclusions: A non-statistical significant association between 2 nd and more than 3 total lines of therapy in survival was found in subjects diagnosed with stage III B/C and IV. However the trend towards survival was present, indicating that some patients could benefit from the addition of 3 rd line but it would require additional studies to confirm this." @default.
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- W2996389723 date "2012-05-20" @default.
- W2996389723 modified "2023-09-25" @default.
- W2996389723 title "Differences in survival for advanced-stage colorectal cancer (CRC) patients by lines of therapy received in a U.S. local oncology practice." @default.
- W2996389723 doi "https://doi.org/10.1200/jco.2012.30.15_suppl.e14106" @default.
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