Cost burden associated with advanced non-small cell lung cancer in Europe and influence of disease stage

BACKGROUND: Although evidence suggests that stage of disease may influence costs associated with non-small cell lung cancer (NSCLC), there remains a relative paucity of data on the financial burden incurred directly by patients and their informal caregivers as they progress through the disease course. As part of a large, cross-sectional study of the “real-world” humanistic and financial burden of advanced NSCLC in Europe, an analysis was conducted to quantify the cost burden of disease from a patient and caregiver perspective, and to evaluate how stage of disease impacts these costs. METHODS: Financial data were collected (May 2015–June 2016) during a multinational (France, Germany, and Italy) cross-sectional study of adults with advanced NSCLC (stage IIIB–IV) and their informal (unpaid) caregivers. Data were obtained via medical chart reviews and patient/caregiver self-completion forms. Costs were annualized and unadjusted or adjusted for government financial support. Statistical significance was assessed using Mann-Whitney U tests. RESULTS: One thousand thirty patients and 427 accompanying caregivers were recruited and asked to provide cost data. Mean total unadjusted direct and indirect out-of-pocket expenses were €5691 for patients and €4125 for caregivers; after adjusting for government financial support, values were €2644 and €3477. Mean wage losses were significantly higher for patients with stage IV vs IIIB NSCLC (€2282 vs €499; p = 0.0135) as were unadjusted direct out-of-pocket expenses (€4020 vs €1546; p = 0.0306). For caregivers, a similar but non-significant trend was observed. Mean total unadjusted direct and indirect out-of-pocket costs were numerically higher for stage IV vs IIIB NSCLC among patients (€5925 vs €3528) and caregivers (€4319 vs €2232); government financial support normalized patient costs, but they remained numerically higher for stage IV disease among caregivers. CONCLUSIONS: The financial burden of advanced NSCLC is considerable and appears to be influenced by stage of disease, with direct and indirect costs increasing as the disease progresses. Government financial support programmes appear to mitigate additional cost burdens among patients, but not among caregivers.