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Avastin For Breast Cancer: Hope Versus False Hope

Filed by KOSU News in Health.
October 13, 2011

The Food and Drug Administration regularly courts controversy. But the regulator is treading new and particularly emotional territory as it has moved to revoke approval of the drug Avastin to treat breast cancer.

Any day now FDA Commissioner Margaret Hamburg is expected to make a final decision on Avastin’s fate. Women who said Avastin helped their breast cancer were out in force at a June hearing of an appeal of FDA’s proposal. At this point, it would be a big surprise if the agency let the approval, granted on an accelerated basis back in 2008, stand.

Now, one of the cancer specialists on the expert panel, which voted unanimously against the Avastin appeal, invokes a hypothetical conversation with a breast cancer patient to explain why.

In a letter published in the latest New England Journal of Medicine, Dr. Mikkael Sekeres, who heads the leukemia service at the Cleveland Clinic, asks what sort of chat he would have with a woman, if he was the doctor leaning toward Avastin for breast cancer.

The bottom line:

Well, I can offer you a drug that will not make you live longer, won’t make you feel better, and may have life-threatening side effects, but it will keep your cancer from worsening by an average of 1 to 2 months.

As a member of the FDA’s Oncologic Drugs Advisory Committee, he tells Shots he kept butting his head against the evidence that showed Avastin’s benefit, such as it was, amounted to a little more time without breast cancer getting worse.

Should this progression-free survival “in the absence of an overall survival advantage or any improvement in quality of life” sway a patient? In the end, Sekeres saw it as a Pyrrhic victory for the drug and decided it wasn’t enough to keep the approval for the drug intact.

“My job is to be honest with my patients and to explain the goals of treatment clearly and to make sure I’m following what their goals are,” he says. And, perhaps most importantly, he adds, “to give hope but not false hope.”

He acknowledges the heartfelt “testimonies by women treated with Avastin” at the hearing. “They moved us,” he says.

With his letter, he says, “I wanted to put more of a face on ODAC. We really think about patients sitting three feet away from us in exam rooms.”

As his letter concludes:

We did not make this decision because we do not care about women with breast cancer or because we want to deny them therapy for a terrible disease but because we do not want people to be hurt by a drug that does not work that well. We do not want to provide false hope.

[Copyright 2011 National Public Radio]

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