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    • USFDA panel backs Puma...

    USFDA panel backs Puma Biotechnology Inc's breast cancer drug

    Written by Ruby Khatun Khatun Published On 2017-05-26T09:31:54+05:30  |  Updated On 26 May 2017 9:31 AM IST
    USFDA panel backs Puma Biotechnology Incs breast cancer drug
    WASHINGTON: Puma Biotechnology Inc's experimental breast cancer drug reduces the risk of disease recurrence and should be approved, an advisory committee to the U.S. Food and Drug Administration concluded on Wednesday.

    The panel voted 12 to 4 in favor of the drug, neratinib, saying its benefits outweighed the risks, though panelists noted that the magnitude of the benefit was modest. The FDA is not obliged to follow the recommendations of its advisory panels, but typically does so.


    The difference in the rate of disease-free survival between patients taking neratinib and those taking a placebo after two years was 2.3 percent, meaning that out of 100 women, cancer returned in 5.8 women in the neratinib group compared with 8.1 in the placebo group.


    "The benefit in absolute terms is relatively modest," said Dr. Grzegorz Nowakowski, associate professor of medicine and oncology at the Mayo Clinic in Rochester, adding: "toxicity appears to be manageable."


    The most significant side effect of the drug was diarrhea, which affected 95 percent of patients. In 40 percent of cases, the diarrhea was severe. In total, 28 percent of patients discontinued neratinib due to a side effect.


    The drug is designed to treat early stage breast cancer in patients with the HER2 genetic mutation whose tumor has been surgically removed and who have been treated with Roche Holding AG's Herceptin, a drug which itself reduces the risk of the disease returning.


    Panelists who voted against approval were not convinced the drug would be effective in the overall population for which it would be approved, though some thought it could potentially be beneficial in a subset of patients.


    "I felt that the indication as proposed did not suggest a benefit profile for the majority of patients," said Dr. Harold Burstein, a physician at Dana-Farber Cancer Institute and associate professor of medicine at Harvard Medical School.


    Breast cancer is the most frequently diagnosed cancer in women. HER2-positive breast cancer accounts for 20-25 percent of breast cancer cases. The current standard of care in patients with early breast cancer is chemotherapy and one year of Herceptin following surgery. About 20 percent of patients with HER2-positive early breast cancer will see their cancer recur within five years following standard treatment.


    Puma's shares rose 39 percent on Monday after the FDA posted its initial review. They were halted on Wednesday.


    (Reporting by Toni Clarke in Washington; Editing by G Crosse and Andrea Ricci)

    breast cancerbreast cancer drugdiarrheaDr Grzegorz NowakowskiDr Harold BursteinFDAHER2 genetic mutationHerceptinneratinibPuma BiotechPuma Biotechnology IncRocheside effectstumorUSFDA
    Source : REUTERS

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    Ruby Khatun Khatun
    Ruby Khatun Khatun
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