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  • Cabozantinib most...

Cabozantinib most effective treatment for metastatic papillary kidney cancer

Written By : Hina Zahid |Medically Reviewed By : Dr. Kamal Kant Kohli Published On 2021-02-18T07:45:01+05:30  |  Updated On 18 Feb 2021 2:41 PM IST
Cabozantinib most effective treatment for metastatic papillary kidney cancer
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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 will be presented at ASCO's virtual 2021 Genitourinary Cancers Symposium on Feb. 13, 2021 at 1 p.m. ET. The findings will be simultaneously 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 companies 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 companies as well as collaborations between companies 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.


cabozantinibmetastatic papillary kidney cancerthe lancetgenitourinary cancers symposiun
Source : The Lancet
Hina Zahid
Hina Zahid

    Hina Zahid Joined Medical Dialogue in 2017 with a passion to work as a Reporter. She coordinates with various national and international journals and association and covers all the stories related to Medical guidelines, Medical Journals, rare medical surgeries as well as all the updates in the medical field. Email: editorial@medicaldialogues.in. Contact no. 011-43720751

    Dr. Kamal Kant Kohli
    Dr. Kamal Kant Kohli

    Dr Kamal Kant Kohli-MBBS, DTCD- a chest specialist with more than 30 years of practice and a flair for writing clinical articles, Dr Kamal Kant Kohli joined Medical Dialogues as a Chief Editor of Medical News. Besides writing articles, as an editor, he proofreads and verifies all the medical content published on Medical Dialogues including those coming from journals, studies,medical conferences,guidelines etc. Email: drkohli@medicaldialogues.in. Contact no. 011-43720751

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