Population	Index (prognostic) factor	Comparator	Outcome(s)	Timing	Setting
People with classic HL, at any stage of the disease Newly diagnosed individuals undergoing first‐line therapy Adults, as defined in the studies	Interim PET scan results	Not applicable to this review	Overall survival (OS) Progression‐free survival (PFS) PET‐associated adverse events (AEs) The outcome should be measured after a minimum follow‐up of 12 months.	Interim PET scan should be conducted during chemotherapy (after one, two, three or four cycles of chemotherapy)	Hospital/treatment centre