CD8A and pancreatic intraductal papillary-mucinous neoplasm: As shown in Figure S3, the percentage of CD8A-positive T lymphocytes expressing HAVCR2 and/or PDCD1 was lower in cases of intraductal papillary mucinous neoplasms (IPMN) and serous cystadenoma (SC) compared to the percentage observed in PDAC.