Tocilizumab for advanced non-small cell lung cancer with concomitant inflammatory cachexia: A single-centre study.

Abstract

2647 Background: Cancer cachexia significantly contributes to morbidity and mortality in patients with non-small cell lung cancer (NSCLC). Inflammatory pathways mediated by interleukin-6 play a crucial role in the development of cancer cachexia. This study aimed to investigate the use of tocilizumab, an anti-interleukin-6 receptor inhibitor, in the management of NSCLC with coexisting inflammatory cachexia. Methods: Data were collected from patients with NSCLC and concurrent inflammatory cachexia who received either tocilizumab plus anti-tumour therapy or anti-tumour therapy alone. The primary endpoints were overall survival (OS) and improved modified Glasgow Prognostic Score (mGPS) at week 12, while secondary endpoints included changes from baseline over 12 weeks in body weight, albumin, C-reactive protein and mGPS. Qualitative improvements in patient self-rated appetite and fatigue were reported as exploratory analysis. Results: The study included 49 patients diagnosed with NSCLC and coexisting inflammatory cachexia, of which 26 received tocilizumab in combination with anti-tumour therapy, and 23 received anti-tumour therapy alone. The tocilizumab group demonstrated a significantly longer median OS compared to the control group (15.1 vs. 3.2 months; hazard ratio 0.18, 95% confidence interval 0.08-0.38; p < 0.001). The rate of patients surviving with mGPS improvement at week 12 was significantly higher in the tocilizumab group than in the control group (OR 168.7, 95% CI 16.3-1746.5; p < 0.001). Over the 12-week period, significant improvements were observed in body weight, albumin, C-reactive protein, and mGPS in the tocilizumab group compared to the control group. Additionally, the tocilizumab group displayed significantly higher rates of improvement in appetite and fatigue. The incidence of grade 3 or higher adverse events was 34.6% in the tocilizumab group compared to 78.3% in the control group. Tocilizumab-related adverse events were observed in three patients (11.5%), including two cases of neutropenia and one case of skin and subcutaneous tissue infection. Conclusions: Tocilizumab demonstrated significant benefits in survival and various clinical parameters, including body weight, albumin, C-reactive protein, mGPS, and symptom burden in patients with NSCLC and concurrent inflammatory cachexia. Given the existing unmet medical need for effective interventions for cancer cachexia, tocilizumab may be considered as a potential treatment option.