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F. Van Den Berkmortel

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    MINI 07 - ChemoRT and Translational Science (ID 110)

    • Event: WCLC 2015
    • Type: Mini Oral
    • Track: Treatment of Locoregional Disease – NSCLC
    • Presentations: 1
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      MINI07.12 - Stage III NSCLC in the Elderly: Patient Characteristics Predictive for Tolerance and Survival of Chemoradiation in Daily Clinical Practice (ID 1512)

      16:45 - 18:15  |  Author(s): F. Van Den Berkmortel

      • Abstract
      • Presentation
      • Slides

      Although the mean age at diagnosis of stage III non-small cell lung cancer (NSCLC) is 70 years, trials mainly include younger patients. Therefore, a lack of knowledge remains regarding tolerance and survival of standard treatment (concurrent chemoradiation (cCHRT)) and other treatment options for the elderly. The aim of this study was to evaluate administered treatment, assess motivations to omit cCHRT, and determine predictors for treatment tolerance and survival among unselected elderly with stage III NSCLC.

      In this multicenter retrospective study, all stage III NSCLC patients aged ≥70 and diagnosed in 2009-2013 in three Dutch teaching hospitals were included. Data on patient and tumor characteristics were derived from the Netherlands Cancer Registry and medical records regarding treatment details, geriatric patient characteristics, tolerance (completing treatment and/or no unplanned hospitalizations) and survival. Treatment and motives for omitting cCHRT were described. Univariate and multivariable analyses were performed to gain insight into predictive factors.

      In the 219 included patients, mean age was 76 years, 78% was male and 51% had squamous cell carcinoma. Sixty-eight percent had a WHO Performance Status (PS) of 0-1, 22% PS 2, and 11% PS 3. Serious co-morbidity (severe organ decompensation or ≥2 moderate decompensations) was present in 59%, average co-morbidity (moderate organ compensation or ≥2 mild decompensations) in 16%, mild co-morbidity (mild organ decompensation) in 11% and 15% had no co-morbidities. Chemoradiation (CHRT) was administered in 55% of patients (33% cCHRT and 22% sequential CHRT (sCHRT)), 16% received only radical radiotherapy (RT) and 29% Best Supportive Care (BSC). CHRT was less often administered to patients aged ≥75 and those with a PS 2-3 (p<0.001). Also, patients with serious co-morbidity were less likely to receive CHRT, although not significant (p=0.10). The most common motives for omitting cCHRT were co-morbidity and/or poor PS (57%) and patient refusal (15%). Multivariable analyses showed that treatment and co-morbidity were predictive for tolerance. In comparison to cCHRT, tolerance was significantly better for RT (Odds Ratio (OR) = 5.1(95% Confidence Interval (95%CI) 2.1-13)) and non-significantly better for sCHRT (OR=2.2 (0.97-4.9)). Patients with serious co-morbidity had significantly worse tolerance compared to no co-morbidity (OR=0.28 (0.11-0.68). Even when corrected for patient characteristics, survival was not significantly better after cCHRT compared to sCHRT (Hazard Ratio (HR) = 1.1 (95%CI 0.76-1.7)) or compared to RT (HR=1.3 (0.81-2.0)). The 1-and 3-year Overall Survival (OS) rates for cCHRT were respectively 56% and 17%, for sCHRT 54% and 16%, and for RT 48 % and 9%.

      Co-morbidity, poor PS and patient refusal were the most common motives for omitting cCHRT. Although relatively fit and younger elderly were assigned to cCHRT, treatment tolerance was worse. OS was not significantly different between cCHRT, sCHRT and even RT. Since limited information on geriatric characteristics was available in this retrospective study, prospective studies including geriatric assessments are urgently needed to gather evidence on treatment options, resulting in the most optimal balance between quality of life and survival.

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