TSLP and familial pancreatic carcinoma: A tumor-promoting function for TSLP was demonstrated in pancreatic cancer, where predominant Th2 (GATA-3+) over Th1 (T-bet+) cells within the lymphoid infiltrate in the tumor stroma was associated with reduced survival in pancreatic cancer patients, thus implying an active role for Th2 immunity in tumor progression (23).