FIGURE 1.

Patient characteristics and ctDNA results for all patients. Patient characteristics (sex and age) and tumor characteristics (new or recurrent, stage and location) are shown. Plasma and saliva ctDNA results is indicated before and after treatment, separated for patients with only pre‐treatment samples, patients with matched pre‐ and post‐treatment samples, and patients with only post‐treatment samples. Gray shading indicates not available data. *One patient was sampled for both primary disease and later at recurrence.