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The study noted that Glucagon-like peptide-1−based therapy is gaining widespread use for type 2 diabetes, although there are concerns about risks for pancreatitis and pancreatic and thyroid cancers. There are also concerns that dipeptidyl peptidase-4 inhibitors could cause cancer, given their effects on immune function.
The article's conclusion: That case reports and animal studies indicating an increased risk for pancreatitis with glucagon-like peptide-1−based therapy. The findings also raise caution about the potential long-term actions of these drugs to promote pancreatic cancer.
Read the full article here: http://www.gastrojournal.org/article/S0016-5085(11)00172-7/fulltext