http://www.nejm.org/doi/full/10.1056/NEJMhle1311493
If you skip to the very end to see their conclusion: “In the next few years,
evidence will accumulate to indicate how well the new breakthrough-therapy
designation improves the options of patients with serious and intractable
diseases and to what extent it facilitates the market entry of treatments that
promise more than they can deliver.”—then you’d guess that they are pretty wishy-washy about the
new category of “breakthrough therapy” that Congress enacted in 2012. A close
reading shows that you’d be wrong; if you check out all the fine print you’ll
see that the authors are very negative about this new FDA category aimed at
hastening new drug approval.
Why
the negativity? The points they make are:
- There’s really no good evidence that currently,
patients suffer as a result of slow FDA approvals. FDA approval times are
steadily decreasing.
- There’s some evidence at least that unsafe drugs are
getting onto the market because of current FDA approval practices. The authors
mention among other examples the leukemia drug, ponatinib, approved on an
accelerated basis in 2012, then temporarily suspended in 2013 when it was
shown that nearly half of patients on the drug followed for 2.7 years
developed serious blood-clotting events like heart attacks and strokes.
- Before Congress enacted this new “breakthrough” category,
there were already several pathways for “fast track” approvals.
- In the first year after the “breakthrough” category was
approved, the FDA received 92 new drug applications for this designation.
As I noted in HOOKED and previously on this blog, in recent years, sober
appraisals of new drugs have shown repeatedly that no more than a small
percentage of new drugs qualify as significant advances over existing
therapies. If this many drugs are seeking approval under the new
designation, it is certainly being used for drugs that aren’t “breakthroughs”
in any meaningful sense of the term. (The FDA approved only 27 of those
applications.)
- We’ve seen many times here how a good way to approve a
useless or a harmful drug is to look only at surrogate endpoints and not
at meaningful patient outcomes. Under previous rules, a drug had to show
activity first against a “well-established surrogate endpoint,” and then
later, it was all right to address a “less-than-well-established surrogate
endpoint,” whatever that is. Apparently even that was not loosey-goosey
enough for Pharma, so this “breakthrough” category allows approval based
on “an effect on a pharmacodynamic biomarker(s) that does not meet
criteria for an acceptable surrogate endpoint, but strongly suggests the
potential for a clinically meaningful effect on the underlying disease.”
(And here I would have thought that would be the definition for an “acceptable
surrogate endpoint”—shows how much I know.)
When
the industry lobbies for a slicker greased pathway through FDA approval, it
never comes to Congress by itself; it always comes along with “consumer” lobbyists
supposedly representing patients desperate for cures. We’ve also seen numerous
times how often those “consumer” groups are actually bankrolled by Pharma, so
that pretty much disposes of that argument—but Congress laps it up nonetheless.
I
explained in HOOKED how back around 1972, some brilliant Pharma lackey invented
the “drug lag,” the claim that people were dying like flies in the U.S. because
wonder drugs approved years ago in Europe were being held up by a stodgy,
unresponsive FDA. I there compared the “drug lag” to John F. Kennedy’s famous “missile
gap.” There are two analogies. One, the “lag” and the “gap” both turned out on
investigation to be purely mythical. Two, once given voice, they refused to
die, no matter how much proof was amassed on the other side. And so today we
still operate under the myth that the FDA is too slow to approve marvelous new
wonder drugs and somehow we have to speed up the process. Or at least Congress
operates under that myth when huge piles of Pharma lobbying cash are spread
around along with it.
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