Table 1.

Available questionnaires and biological samples.

	Baseline	6 months	12 months	18 months	30 months
# Patients	89	78	63	56	46
Quality-of-life questionnaires
QLQ C30	48	40	27	18	14
QLQ H&N35	64	55	32	22	15
Nutritional assessments
Nutritional questionnaires	58	49	43	33	22
Daily activity	33	26	22	15	9
Food-circulating miRNA profiling
Plasma	59	46	36	30	19
Biobanking
Plasma ctDNA	59	46	36	30	19
Saliva microbioma profiling	60	43	36	30	26
Saliva RNA	48	35	20	27	19
Saliva DNA methylation	57	41	36	33	20