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February 22, 2011
Oncology Follow-Up Trials
During the most recent Avastin controversy (with its conditional approval for metastatic breast cancer being pulled by the FDA), the role of follow-up studies in oncology became a big point of discussion.
Now there are reports that some companies aren't exactly following up in the way that they're supposed to. This isn't good. Conditional approvals are granted under the banner of "better to help people now than wait for more data", but eventually the numbers have to show up. After all, not all of these treatments are going to confirm when they're looked at more closely.
Not all of this can be put down to foot-dragging on the part of the companies. In some cases, it's proven hard to round up enough patients for further trials, and in others, the trial protocols themselves have become outdated. But there needs to be some way to review these things more regularly (as seems to be the case in the EU) to keep the process from getting tangled up.
You'll note from the article that opinions are all over the place on how lenient the FDA's approval process really is. You have people who say that the agency is dragging its feet on life-saving treatments, and people (looking at the same data set) who say that they're letting too much stuff through on the flimsiest grounds. We're not going to resolve that argument any time soon. But can we at least agree that we're going to require evidence at some point?
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