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In a SWOG Cancer Research Network trial that put three targeted drugs to the test, the small molecule inhibitor cabozantinib was found most effective in treating patients with metastatic papillary kidney cancer - findings expected to change medical practice.These findings were published in The Lancet.There are currently no effective treatments for metastatic papillary kidney cancer, or metastatic pRCC, a rare subtype of kidney cancer. One study of 38 patients found that the average survival rate was eight months after diagnosis.Sumanta Pal, MD, clinical professor of medical oncology at City of Hope, a comprehensive cancer center, and an investigator at SWOG, a cancer clinical trials group funded by the National Cancer Institute (NCI), part of the National Institutes of Health (NIH), said there is hope for metastatic papillary kidney cancer patients. Mutations in the MET gene are a hallmark of this type of cancer, and there are new drugs that target the MET gene among other important signaling pathways. Pal decided to put three of them to the test against the current standard treatment, sunitinib, a receptor tyrosine inhibitor.In his study, S1500, Pal studied 147 eligible patients with papillary kidney cancer, most of whom had not received any prior treatment. Patients were randomly assigned to one of four treatment groups - those who took sunitinib and those who took one of the three MET target drugs - cabozantinib, crizotinib, and savolitinib.Pal and his team wanted to see how long it would take patients' cancer to spread or return, a measure known as progression-free survival. What they found: Patients receiving sunitinib went a median of 5.6 months before their cancer progressed; patients receiving savolitinib and crizotinib fared much worse overall. But cabozantinib, which inhibits VEGF receptors and AXL in addition to MET, gave patients a median of 9.2 months before their cancer progressed. In addition, 23% of patients had a significant reduction in the size of their tumor with cabozantinib. In contrast, only 4% of patients saw this kind of tumor response with sunitinib."The magnitude of the response was surprising," Pal said. "We still have a long way to go to help make patients' lives longer and better, but we do have a new standard treatment for these rare cancer patients. This result is a testament to SWOG and to City of Hope, who have the motivation and expertise needed to successfully conduct rare cancer clinical trials."Building on the momentum of S1500, SWOG will lead the next pivotal trial in papillary kidney cancer, one with a focus on the potential synergy between targeted treatments like cabozantinib and immune therapy. Pal will lead that study with SWOG investigator Dr. Benjamin Maughan at Huntsman Cancer Institute at the University of Utah.SWOG 1500, also called PAPMET, was sponsored by NCI, designed and led by the SWOG Cancer Research Network under the leadership of Dr. Pal, and conducted through the NCI's National Clinical Trials Network.S1500 was also funded by the NIH through NCI grants CA180888, CA180819, CA180820, CA180821, CA180863, and CA180868; and in part by AstraZeneca plc/AB, Exelixis, Inc., and Pfizer, Inc. The compes provided savolitinib, cabozantinib, crizotinib, and sunitinib, respectively, for the trial under each company's Cooperative Research and Development Agreement with the NCI."NCI's drug development program in the Cancer Therapy Evaluation Program facilitated the collaborations between pharmaceutical compes as well as collaborations between compes and SWOG investigators to make this trial possible. We are proud to have played a part in defining which of these therapies is most effective for patients with papillary renal cell carcinoma," said John Wright, MD, PhD, the associate branch chief of CTEP's Investigational Drug Branch, and the NCI's medical monitor for the study.( With inputs from ANI )Disclaimer: This post has been auto-published from an agency feed without any modifications to the text and has not been reviewed by an editor

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Health :Cabozantinib most effective treatment for metastatic papillary kidney cancer: Study

Recent research in a SWOG Cancer Research Network trial that put three targeted drugs to the test, found cabozantinib, which is a small molecule inhibitor, most effective in treating patients with metastatic papillary kidney cancer. ...

Health :Study reveals cabozantinib most effective treatment for metastatic papillary kidney cancer

In a SWOG Cancer Research Network trial that put three targeted drugs to the test, the small molecule inhibitor cabozantinib was found most effective in treating patients with metastatic papillary kidney cancer - findings expected to change medical p ...