Impact of Financial Toxicity on Treatment Adherence and Quality of Life in Pancreatic Cancer.

Purpose: Financial toxicity (FT) is increasingly recognized as a major issue in cancer care. We evaluated the prevalence and risk factors for FT in patients with pancreatic ductal adenocarcinoma (PDAC) and FT associations with treatment adherence and quality of life (QOL).

Methods: A screening questionnaire based on the Comprehensive Score for Financial Toxicity (COST) was implemented at our National Cancer Institute-designated comprehensive cancer center. Respondents with pathologic diagnosis of PDAC who completed >50% of prompts between June 2022 and June 2023 were analyzed. COST ≤16 was categorized as FT. Associations between FT and demographic and clinical factors were assessed using logistic regression, and QOL was assessed using linear regression.

Results: Of the 1,888 patients with PDAC, 1,162 completed the COST questionnaire, and 1,079 met the inclusion criteria. The prevalence of FT was 23% (n = 245); 37% of patients with FT reported medication nonadherence due to cost. Demographic factors and poor performance status were associated with FT. Treatment-naïve patients were more likely to report FT compared with those on induction, adjuvant, or palliative therapy (P = .049). Patients experiencing FT reported worse QOL, with a median score of 5 (IQR, 4-7) versus 8 (IQR, 6-9) without FT. This relationship persisted after adjusting for demographic and clinical factors; the effect size of FT (β = -1.5; 95% CI, -1.1 to -1.9) was nearly double that of poor performance status (β = -.8; 95% CI, -1.3 to -0.4).

Conclusion: FT affected nearly one in four patients with PDAC at a high-volume cancer center and was associated with worse QOL and medication nonadherence. Universal screening and interventions to reduce FT are warranted. Clinical trials investigating QOL as an end point must account for potential confounding due to FT.