UPDATE 1-AstraZeneca breast cancer treatment gets FDA priority review

AstraZeneca Plc said on Thursday that the U.S. drug regulator will give a speedy review to its experimental breast cancer treatment, which could put the British drugmaker in direct competition with bigger rival Roche Holding AG. The U.S. Food and Drug Administration (FDA) accepted AstraZeneca's application and granted the treatment, trastuzumab deruxtecan, a priority review for the treatment of HER2-positive metastatic breast cancer, the drugmaker said.