Encouraging Health

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.

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.’”

And so, like many others in that situation, 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. “It’s not a slam-dunk.”

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? “I think of Avastin as a model that is showing us where the problem is,” said Barbara Brenner, executive director of Breast Cancer Action, an advocacy group.

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