Victoza's label also has a warning about the potential risk of thyroid tumors.

WSJ: FDA Approves Amylin's Bydureon Diabetes Drug After Delays

An experimental Pfizer (nyse: PFE - news - people ) pill shrank thyroid tumors, another hard-to-treat cancer.

FORBES: Quiet Times At Biotech's Big Show

An experimental Pfizer pill shrank thyroid tumors, another hard-to-treat cancer.

FORBES: Magazine Article

The FDA-approved prescribing label for Bydureon has a prominent warning stating that the drug caused certain kinds of thyroid tumors in rats at clinically relevant exposures in testing, according to the FDA website.

WSJ: FDA Approves Amylin's Bydureon Diabetes Drug After Delays