Figure 2.

Anti-S IgG antibody titers at D 28 and D 42 according to the different systemic treatments received. The horizontal dashed lines along the x axis indicate the limit of detection (positivity cutoff) provided by the manufacturer (log₁₀ 50 AU/mL). A nonparametric two-tailed pairwise comparison was performed using the Wilcoxon matched-pairs signed-rank test. Anti-S, anti-SARS-CoV-2 anti-spike antibody; AU, arbitrary unit; D, day; IgG, immunoglobulin G; SARS-CoV-2, severe acute respiratory syndrome coronavirus 2; SABR, stereoteactic ablative radiotherapy; TKI, tyrosine kinase inhibitor.