GMP,药品,药学,制药,新药,色谱,药品生产,中药,药材,原料药,医药,中间体,药用辅料

新药永远不会让所有的人,包括最重要的人:病人,满意!作为新药研发人员,唯一可以说我是真实地、科学的

时间: 2008-09-18 02:35:02 作者: 来源: 字号:


Costly Cancer Drug Offers Hope, but Also a Dilemma

It took only an instant for 58-year-old Gailanne Reeh to go from the picture of health to death’s door. By chance, her doctor noticed a lump under her arm during a routine exam. It turned out to be advanced breast cancer.

Soon she was having tests to reveal the extent of the cancer and hearing the grim results

The surgeon, she recalled, “looked at me and said: ‘This is not a conversation I like to have. But I can’t do anything for you. You can’t be cured. You can’t be treated. All we can do is manage your cancer.’ ” On scans to detect tumors, the doctor told Ms. Reeh, “you light up like a Christmas tree.”

And so, like many others in that situation, Ms. Reeh, the vivacious owner of a staffing agency in Boston, was given bevacizumab, also known as Avastin, a drug that signifies both the hopes and dilemmas of modern medicine.

Looked at one way, Avastin, made by Genentech, is a wonder drug. Approved for patients with advanced lung, colon or breast cancer, it cuts off tumors’ blood supply, an idea that has tantalized science for decades. And despite its price, which can reach $100,000 a year, Avastin has become one of the most popular cancer drugs in the world, with sales last year of about $3.5 billion, $2.3 billion of that in the United States.

But there is another side to Avastin. Studies show the drug prolongs life by only a few months, if that. And some newer studies suggest the drug might be less effective against cancer than the Food and Drug Administration had understood when the agency approved its uses.

While many patients and their doctors say the drug can improve the quality of life — like a sense of well-being and an ability to carry out daily tasks without exhaustion or pain — such effects can be hard to document. Meanwhile, many patients with cancers other than those of the colon, lung or breast are taking the drug, even in cases where there is no compelling evidence that it can help.

Avastin also has serious, if infrequent, side effects, some of which can be lethal. And because it is almost always used with standard chemotherapy — it did not work as well when researchers tried it alone — patients on Avastin do not escape chemotherapy’s side effects.

“I still use Avastin routinely, but it’s sobering,” Dr. Leonard Saltz, a colon cancer specialist at Memorial Sloan-Kettering Cancer Center in New York, said of the new data. “It’s not a slam dunk and, in fact, the incremental benefit may be more modest than we want to admit.”

If Avastin were inexpensive or if it cured cancer or even held it at bay, as the drug Gleevec does for blood cancer, few might care. But like a half-dozen or so new biotechnology drugs with a similar combination — alluring promise, high price and only arguable benefits — Avastin raises troubling questions:

What does it mean to say an expensive drug works? Is slowing the growth of tumors enough if life is not significantly prolonged or improved? How much evidence must there be before billions of dollars are spent on a drug? Who decides? When, if ever, should cost come into the equation?

For a patient like Ms. Reeh, fighting for her life, the cost is not the main concern. If her insurer did not pay, she said, she would go into debt, find a way to raise the money.

But some in the pharmaceutical industry worry that such prices will raise concerns about whether the drugs are worth it, leading to a backlash like price controls or restrictions on use.

Roy Vagelos, a former chief executive of Merck who is considered an elder statesman of the industry, said in a recent speech that he was troubled by a drug, which he would not name but which was a clear reference to Avastin, that costs $50,000 a year and adds four months of life. “There is a shocking disparity between value and price,” he said, “and it’s not sustainable.”

Some patient advocates are also troubled by very expensive treatments like Avastin coming into routine use on what they see as little more than a hope and an expensive prayer.

“It’s absolutely critical that we start having a public discussion,” said Barbara Brenner, executive director of Breast Cancer Action, an advocacy group. “I think of Avastin as a model that is showing us where the problem is.”

--------------------------------------------------------
Sorry, I can not paste all of contains, hope you can reach it by newyort time's website.
发表评论 共有条评论
验证码: 看不清楚,点击刷新 匿名发表