Immunotherapy phase I trials in patients Older than 70 years with advanced solid tumours

Publication date: May 2018
Source:European Journal of Cancer, Volume 95
Author(s): H. Herin, S. Aspeslagh, E. Castanon, V. Dyevre, A. Marabelle, A. Varga, S. Postel Vinay, J.M. Michot, V. Ribrag, A. Gazzah, R. Bahleda, O. Mir, C. Massard, A. Hollebecque, J.C. Soria, C. Baldini
BackgroundThe development of immune checkpoint blocker development brings new hope in older patients (OPs) because of clinical efficacy and low toxicity. Clinical indications are rising steadily, but very few data are available in the geriatric population where comorbidities, reduced functional reserve and immunosenescence may affect efficacy and tolerance.MethodsAll cases of patients enrolled in immunotherapy phase I trials between January 2012 and December 2016 in the Drug Development Department (DITEP) at Gustave Roussy were retrospectively reviewed. Case–control analysis was performed in OPs (patients ≥ 70 years) matched to younger patients (YPs) (patients < 70 years) by trial and treatment dose. We compared cumulative incidence, grade and type of immune-related adverse events (IrAEs) and survival outcomes.ResultsAmong the 46 OPs and the 174 YPs enrolled in 14 phase I/II trials, 10 (22%) and 23 (13%) patients experienced grade III–IV IrAEs. Cumulative incidence of grade I–II IrAEs was significantly higher in OPs than YPs (p < 0.05). No significant difference was observed between the two groups for grade III–IV IrAEs (p = 0.50). Older age was not associated with lower dose intensity of treatment (p = 0.14). No significant difference was observed between OPs and YPs in median progression-free survival (hazards ratio 1.41, 95% confidence interval [CI] [0.94–2.11] p = 0.09) or median overall survival (HR 0.92, 95% CI [0.61–1.39] p = 0.77).ConclusionImmune checkpoint blockade appears to be an acceptable treatment option for OPs in the setting of phase I trials.



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