Canadian study aims to unlock secrets of cancer immunotherapy

Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.

Inclusion Criteria: * Willingness to submit a blood sample for buffy-coat and at least one tumour biospecimen. * CAN-PREDICT-IO subgroup: Provision of pre-treatment fresh tumour biopsy/resection tumour tissue for patients who will receive IO treatment, in a specified list of IO therapeutic trials currently active in CCTG. OR * CAN-PIVOT subgroup: Provision of on-treatment or at-progression fresh tumour biopsy/resection tumour tissue for patients who have received IO treatment, in a specified list of IO therapeutic trials currently active in CCTG. There are 2 CAN-PIVOT subgroups: Primary resistance is defined as disease progression evident in initial on-treatment imaging or disease stability lasting less than six months. Acquired resistance, on the other hand, manifests as disease progression subsequent to an initial partial or complete response or after a period of disease stability lasting six months or more. Patients on adjuvant treatment, with no evidence of disease (NED) by radiological assessment who develop disease (local recurrence or metastases) after or while on immunotherapy are included. * Archived formalin fixed paraffin embedded (FFPE) blocks or slides would only be collected from patients who met CAN-IMPACT-IO study criteria and underwent fresh tumour biopsy/resection following consent but had a tumour specimen deemed insufficient for WGTS. The FFPE sample may be used to provide an alternate source of tumour tissue for WGTS in such cases. Where local centre regulations prohibit submission of blocks of tumour tissue, a predetermined number of unstained slides of representative tumour tissue may substitute the tumour block. * Participant consent for the CAN-IMPACT-IO study must be appropriately obtained in accordance with applicable local and regulatory requirements.