gregg: an fda panel voting unanimously to stop allowing the use of avastin for breast cancer. now, avastin is the best selling cancer drug in the world but the fda panel says studies have not shown it to be safe or effective for breast cancer treatment. breast cancer by by the way is the second leading cause of cancer death for women in america. more than 12 percent of women born today will be diagnosed with it sometime in their lifetime. dr. marc siegl is a member of the fox news medical a team, author of the inner pulse. what do you think of this decision? >> it's troubled because avastin is a one of its kind drug, it cuts off blood supply to developing cancers and is shown to be effective in colon, lung, kiddie and brain cancers and for a