Soul Bazaar

Panel Urges End to Avastin Use in Breast Cancer

July 23rd, 2010 22 Comments » Filed under Acknowledgement

The 12 to 1 vote represents a stinging setback for Avastin, which is now the world’s best-selling cancer drug, with global sales of about $6 billion last year. The product has at times been hailed as a near miracle, the first medicine to work by blocking the flow of blood to tumors.

The data discussed at the meeting Tuesday suggested that, at least for advanced breast cancer, the initial data that led to approval was not borne out by subsequent studies.

“I’m really not seeing that this has a benefit for patients,” Natalie Compagni Portis, the patient representative on the committee, said during the meeting in Gaithersburg, Md. “Hope is very important, but to offer hope that isn’t substantiated I don’t think is responsible.”

Avastin, which is sold by Roche’s Genentech unit, will remain on the market even if the F.D.A. follows the committee’s advice, as it usually does. That is because Avastin is also permitted as a treatment for colon, lung, kidney and brain cancers. So even if the F.D.A. does indeed take the rare move of rescinding its approval, doctors would still be able to use Avastin off-label to treat breast cancer.

Insurers, however, might be reluctant to pay for an unapproved use. And breast cancer treatment would no longer be part of a program in which Genentech caps yearly spending on Avastin at $57,000 for patients with incomes below $100,000. Without the cap, the wholesale price of Avastin for a typical breast cancer patient would be $88,000, according to Genentech.

Avastin, also known as bevacizumab, is Roche’s best-selling product. Jeffery Holford, an analyst with Jefferies & Company, said Roche might now lose about $500 million of the estimated $700 million in Avastin sales to treat breast cancer in the United States. He predicted little effect in other countries because approvals there were not made on a conditional basis.

Genentech, in a statement, said it stood by the data and said that “Avastin should be an option for patients with this incurable disease.” Roche’s American depositary receipts fell $1.20, to close at $33 on Tuesday.

Avastin was given so-called accelerated approval in early 2008, a way for the F.D.A. to approve drugs for life-threatening diseases based on less than complete evidence of effectiveness. Manufacturers must then do further studies to confirm the benefit of the drug.

The two new trials sponsored by Roche for this purpose showed a much smaller effect of the drug, so small, that the committee voted 13-0 that the studies did not confirm the initial benefit.

In the initial study, use of Avastin delayed the worsening of patients’ disease by about 5.5 months. Those who received Avastin plus the chemotherapy drug paclitaxel went a median of 11.3 months before their tumors worsened, or progressed, compared to 5.8 months for those who got paclitaxel alone.

But use of Avastin did not prolong the women’s lives by a statistically significant amount, the gold standard for cancer drugs. And the drug had serious side effects for some patients.

The two new studies, in which different chemotherapy drugs were used with Avastin, showed even fewer signs that it could prolong lives. And the delay in a tumor worsening was much smaller. In one trial, it was just under a month and in the other about one to three months.

“It just delays by another visit before they get the news that their tumor progressed,” said Dr. Patrick Loehrer Sr., of Indiana University and a committee member.

Whether delayed worsening in tumors, a measure known as progression-free survival, is a valid goal for a cancer drug is controversial. Even patient groups were split when Avastin initially came up for approval for use in metastatic breast cancer.

Some said that only a reduction in symptoms or longer survival were meaningful to patients. Others said women worry less if the tumor is not worsening. They also argued that so many drugs were used by patients after the trial was over that any effect Avastin might have had in prolonging lives was washed out.

In December 2007, an F.D.A. advisory committee with some of the same members as Tuesday’s panel voted 5 to 4 against full approval. But in 2008, the F.D.A. granted accelerated approval.

On Tuesday, only one woman with breast cancer testified in favor of the drug, saying it had greatly improved her life and allowed her to golf again and go out with friends. Representatives of two patient groups urged the committee to vote for revocation.

For lung cancer and colon cancer, Avastin improved survival and got full approval. But in those cases as well, subsequent studies did not show as big a benefit as the initial studies.

Reversing the breast cancer approval would be a rare move for the F.D.A. A report by the Government Accountability Office last fall showed that none of the 90 drugs given accelerated approval had ever been removed from the market and that the agency sometimes did not make sure follow-up studies were done.

This June, however, the F.D.A. announced that Mylotarg, a little-used leukemia drug sold by Pfizer, would be withdrawn. In 2005, the agency heavily restricted use of the AstraZeneca lung cancer drug Iressa after it did not prolong survival in clinical trials.

But the Avastin studies were conducted promptly by Roche and evaluated by the F.D.A. “This is a good example of the system working,” said Dr. Wyndham Wilson of the National Cancer Institute, who served as chairman of the committee.

Posted via email from soulhangout’s posterous

Luz

The Thought Provoking, Irreverent Pearl Necklace Grandmother of the 21st C. Paradigm Shifter, Poet, Storyteller, Marketer, Visionary, Blogger, Coach. Mrs. Fire

“50/50 The Magic of the Middle Line”, Experience Coaching”

Founder Soul Hangout & Co-Creative Circles of Coherence, Soul Mastermind Groups. Consciously Connecting & Combining Intelligence with a touch of “Curry”. The 7 “C”‘s of the 7 Condiments of Cooperation

http://soulhangout.net/2171

Popularity: 1% [?]

No TweetBacks yet. (

Welcome! If you're new here, you may want to subscribe to my  | Create Your Badge
Luz Aguirrebena's Facebook profile

22 Responses to “Panel Urges End to Avastin Use in Breast Cancer”

  1. Causes ,effects symptoms and treatments of brain cancer-cancer Says:

    [...] Panel Urges End to Avastin Use in Breast Cancer | Soul Hangout [...]

  2. Latest Breast Cancer Studies Auctions | Uncategorized | A Useful Blog Which Have a Wealth of Information about Cancer ! Says:

    [...] Panel Urges End to Avastin Use in Breast Cancer | Soul Hangout [...]

  3. Hector Mccrone Says:

    This is a really good read for me, Must admit that you are one of the best bloggers I ever saw.Thanks for posting this informative article.

  4. Social Studies Wholesale Says:

    Drinking even moderate amounts of alcohol is an established risk factor for breast cancer in women. Social Studies Wholesale

  5. gynecomastia surgery Says:

    Thanks for posting this info. I just want to let you know that I just check out your site and I find it very interesting and informative. I can’t wait to read lots of your posts.

  6. Breast cancer drug Avastin controversy – breast cancer, new drugs – the pharmaceutical industry-cancer Says:

    [...] Panel Urges End to Avastin Use in Breast Cancer | Soul Hangout [...]

  7. Aral Sea Before And After Says:

    Wow, very interesting article. It’s funny how history can be twisted in so many different ways. These photos certainly give us clues, but I guess we’ll never know the true story. . . .

  8. Fall Of The Republic Review Says:

    This is a good step to save paper. And will save the rain forests in Indonesia. Moreover, this will reduce the burden on the back of elementary school students. Of course this will make the traditional printing companies and governments in the third world into a panic because of their unpreparedness of information technology. . .

  9. Luz Says:

    Well if you keep getting the information most likely you will come to your own valid conclusions. There is a lot of deception around.

  10. Obama Signs Unemployment Extension 2010 Says:

    wow, great, I was wondering how to cure acne naturally. and found your site by google, learned a lot, now i’m a bit clear. I’ve bookmark your site and also add rss. keep us updated.

  11. Chi Yocius Says:

    Advantageously, the article is really the best on this precious topic. I fit in with your conclusions and will surely look forward to your upcoming updates. I would like to thanks will not just be adequate, for the worth clarity in your writing. I will right away grab your rss feed to stay informed of any updates. Genuine work and much success in your business enterprise!

  12. tinnitis Says:

    I was just talking with my coworker about this yesterday over lunch . Don’t know how we got on the topic actually , they brought it up. I do recall eating a excellent steak salad with cranberries on it. I digress…

  13. Jose Grantland Says:

    Just saying thanks will not just be sufficient, for the tremendous lucidity in your writing. I will right away grab your rss feed to stay abreast of any updates.

  14. Tamie Sibbett Says:

    Fantastic write-up, I share the same views. I wonder why this unique scene really does not really feel just like me personally and additionally the blog site possessor :D

  15. Sealing Machine Says:

    Helpful information discussed I’m very delighted to see this post..many thanks for giving all of us great information.Excellent walk-through. I enjoy this post.

  16. Hoteles Ciudad de Panama Says:

    Thank you very much for your help, this site has been a great abatement from the books,

  17. Nellie Brodka Says:

    wanted to let you know that your blog doesnt load properly when using firefox. thought I should let you know

  18. http://www.squidoo.com/lasers-outshine-e-cig Says:

    I started cancer sticks while I was a kid. This appears to be the dumbest wrong move I’ve made. Right now I’m older and I’ve got bronchitis. When attempting to giving up smoking, I stumbled upon the e-cigarette and will see how it works. With luck, it will eventually assist me with this particular unhealthy dependence.

  19. Hoteles Panama Says:

    I Will have to come back again when my class load lets up – even so I am taking your RSS feed so I can read your site offline. Thanks.

  20. Miami Wedding Says:

    My friend has a dealing on car rentals and he enjoys the idea having it. Part of his business is also fixing small parts of cars. He has become someone successful with his business and it has really help him a lot.

  21. Luz Says:

    Thanks so much for your comment!

  22. Clayton Bloomberg Says:

    Recovery comprises a difficult and challenging commitment.

Leave a Reply

You must be logged in to post a comment.

Recent Comments

Blogroll

Resources