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http://www.fiercepharma.com/story/continuing-avastin-use-some-colerectal-cancer-treatments-extends-life/2012-06-04?utm_medium=nl&utm_source=internal
Continuing Avastin use in some colorectal cancer
treatments extends life
Another study released at ASCO show
months of improvement for some women with ovarian cancer costs
June 4, 2012 | By Eric Palmer
A large clinical study of Avastin supports
what doctors in the U.S. have already internalized: In colorectal cancer
patients whose condition worsens, changing up chemotherapy but continuing
treatment with Roche's ($RHHBY) pricy
cancer drug provides some improvement in survival time.
Avastin is approved as a
first-line or second-line treatment for colorectal cancer, but not both, Reuters points
out. But at briefing at ASCO where the results were released, one of
the researchers, Dr. Dirk Arnold, claimed many doctors in the U.S. are already
continuing treatment with Avastin. Those results, released at ASCO,
may give the drug a boost in Europe and other countries where Avastin is
only used as a first-line treatment, reports Ecancer News.
In the colorectal cancer study,
patients continuing on Avastin had a median survival rate of 11.2 months, compared with
9.8 months for those
getting chemotherapy-alone group. Roche's Genentech,
which developed Avastin, also issued a release showing the results of a
Phase III study indicating that women with recurrent, platinum-resistant
ovarian cancer who received Avastin in combination with chemotherapy
had a median progression-free survival
(PFS) of 6.7 months compared to 3.4 months for those getting only chemo. {Note that since they didn’t list overall
survival, just progress-free survival, it is reasonable to presume that overall
survival was negative or near zero--jk}.
For expensive drugs
like Avastin, there are some questions--at least among payers like
governments in Europe--about whether modest improvements justify the added
costs. Of course, the families of most patients believe they do, but they often
are not footing the bill.* Sales of the pricey drug last year were $5.3
billion Swiss francs ($5.5 billion).
Avastin is an antibody that
blocks vascular endothelial growth factor, or VEGF, a protein required by
tumors to develop blood vessels. It is approved in the U.S. for
treating glioblastoma, lung and kidney cancers, as well as colorectal
cancer, Reuters says. But speaking of the colorectal study, Arnold said
the finding may lead to research in other cancers that respond to a combination
of Avastin and chemotherapy to determine if survival rates also
increase.
- read the Reuters story
- get more from Ecancer News
- still more from MedPage
Today
- check out the Roche release on the
colorectal cancer study
- here's the Genentech release
on Avastin treatment for ovarian cancer
* This is totally incorrect.
The belief is that if the average survival is
a bit longer, maybe the person treated will do much better than average. However, the deception lies in that such
person would if in the control group have also done much above survival, for
such is the nature of the bell-shaped curve/
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