Early Impact of Pulmonary Fractionated Stereotactic Body Radiotherapy on Quality of Life:Benefit for Patients With Low Initial Scores (STRIPE Trial)

Abstract

Introduction: Quality of life (QoL) of comorbid patients with pulmonary malignancies is a key issue in considering fractionated stereotactic body radiotherapy (SBRT) indication. This study investigates the early impact of SBRT on QoL.

Methods: One hundred patients with pulmonary lesions were treated with SBRT from February 2011 to December 2014 within the prospective, monocenter, phase II STRIPE trial. The European Organization for Research and Treatment of Cancer Quality of Life Questionnaire Core module (EORTC QLQ-C30) and the QLQ-LC13 lung cancer-specific questionnaire were used to evaluate QoL before, 2 and 7 weeks after SBRT, then every 3 months for 2 years. We report on the analysis of early changes from baseline to 7-week follow-up exam. Impact of patient- and treatment-related factors on the change in QoL was analyzed.

Results: QoL was assessed in 97 patients; compliance was 92% and 85% at baseline and 7 weeks after SBRT, respectively. No clinically relevant changes greater than or equal to 10 in the QoL/global health status (GHS), function scores and inquired symptoms were observed. Patients with baseline QoL below the median showed clinically relevant improvement in QoL/GHS (Δ16.7 ± 25.3, p = 0.003), emotional function (Δ14.4 ± 25.4, p = 0.013), and fatigue (Δ -10.1 ± 26.5, p = 0.089) in contrast to patients with high initial scores. No changes were observed in the dichotomized subgroups of initial Karnofsky index, Charlson Comorbidity Index, age, diagnosis, and tumor localization.

Conclusions: In short-term follow-up, QoL is well maintained after pulmonary SBRT. Especially patients with low initial QoL/GHS scores show benefit from SBRT with respect to QoL.

Keywords: Lung tumors; Patient-reported outcomes; Quality of life; Stereotactic ablative radiotherapy; Stereotactic body radiotherapy.