I think Cetero is to blame here. Not the FDA.
Do you expect the FDA to instantly sound an alarm and recall any drug tested by this agency?
They should have made a press release, but I don't think it would be reasonable to blindly withdraw the treatments. You wish they would have taken Temodar off the market!? Do you know how much evidence the medication has for treatment of glioblastoma multiforme?
Here is a key quote:
"There is no evidence that patients have suffered harm from these drugs; the FDA says it has detected no increase in reports of side effects or lack of efficacy among Cetero-tested medications."