FDA's Avastin Breast Cancer Withdrawal Sets New Standard, Deters Drug Development

FDA’s proposal to withdraw the approval of Avastin for MBC is based on a new standard for the efficacy showing that a therapy must make in first-line MBC. The Agency previously -- and appropriately -- followed a more flexible approach based on data showing a medicine’s effect on PFS [progression-free survival] or other disease progression endpoints, together with data on OS [overall survival].