Navigation Links
Response rate high for some patients with metastatic melanoma treated with vemurafenib
Date:3/16/2012

TAMPA, Fla. (March 16, 2012) An international team of researchers from the United States and Australia, including researchers at Moffitt Cancer Center in Tampa, Fla., have found that the oral BRAF inhibitor vemurafenib (PLX4032) when tested in a phase II clinical trial offered a high rate of response in patients with previously treated metastatic melanoma and who had the BRAF mutation. More than 50 percent of the patients in the trial had positive, prolonged responses and a median survival of almost 16 months.

The study was published in a recent issue of the New England Journal of Medicine.

According to study co-author Jeffrey S. Weber, M.D., Ph.D., director of the Donald A. Adam Comprehensive Melanoma Research Center at Moffitt, approximately 50 percent of melanomas harbor the activating (V600) mutation threonine protein kinase B-RAF. Unfortunately, treatment options for these patients are "limited."

The BRAF inhibitor vemurafenib had been found effective in phase I and phase III trials. However, to determine the overall response rate in previously treated stage IV melanoma patients, the researchers designed a multi-center, phase II trial with 132 patients with previously treated BRAF V600-mutant metastatic melanoma. The trial was designed by senior academic authors and representatives of the trial sponsor, Hoffman-La Roche, and was open to adults over the age of 18 with histologically proven stage IV melanoma, progressive disease, and at least one prior systemic treatment.

"Few patients with metastatic melanoma bearing the BRAF V600 mutation have a response to systemic chemotherapies," said Weber. "Additionally, most have a median survival of only six to 10 months. However, this study yielded an overall response rate of 56 percent and a median survival of nearly 16 months."

The 56 percent response rate for this study was higher than the response rates reported on studies with other therapies for a majority of patients, such as the monoclonal antibody impilimumab. Once more, the response for patients in the vemurafenib phase II trial was "rapid," said the study authors, with less than 15 percent of patients having had disease progression at their first evaluation.

"This trial showed that vemurafenib has clinically evident anti-tumor activity in metastatic melanoma, and that response rates are higher than those associated with previously used treatments," concluded Weber.

The authors reported that toxic effects were common, but not severe or life-threatening in most cases. They added that, as with most targeted therapies that block a driver oconogene, cancer cells can develop resistance with continued dosing and the molecular mechanisms of vemurafenib are "under investigation" at Moffitt by Keiran S. Smalley, Ph.D., and at other institutions to answer questions about resistance.


'/>"/>

Contact: Ferdie De Vega
Ferdinand.DeVega@moffitt.org
813-745-7858
H. Lee Moffitt Cancer Center & Research Institute
Source:Eurekalert

Related medicine news :

1. Poor Sleep May Impact Stress Response in Older Adults
2. Microneedle vaccine patch boosts flu protection through robust skin cell immune response
3. GIS siting of emergency vehicles improves response time
4. Researchers find sarcoma tumor immune response with combination therapy
5. Arthritic knees, but not hips, have robust repair response
6. Combination therapy shows positive response for children with ADHD
7. PET technique promises better detection and response assessment for Non-Hodgkins lymphoma
8. Researchers use light to measure cancer cells response to treatment
9. Team pinpoints amino acid variation in immune response gene linked with ulcerative colitis
10. Jefferson researchers mirror human response to bacterial infection and resolution in mice
11. Unexpected signaling role for foul-smelling hydrogen sulfide in cell response to protein misfolding
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:10/13/2017)... ... October 13, 2017 , ... Coveros, a ... has been awarded a contract by the Center for Medicare and Medicaid Services ... accelerate the enterprise use of Agile methodologies in a consistent and high value ...
(Date:10/12/2017)... , ... October 12, 2017 , ... ... services for healthcare compliance program management, will showcase a range of technology and ... for Assisted Living (NCAL) Convention and Expo to be held October 14–18, 2017 ...
(Date:10/12/2017)... ... October 12, 2017 , ... The ... demand of today’s consumer and regulatory authorities worldwide. From Children’s to Adults 50+, ... to meet the highest standard. , These products are also: Gluten Free, ...
(Date:10/12/2017)... ... 12, 2017 , ... Asante, a nationally recognized health system ... their existing home health joint venture through an agreement, effective October 1, 2017, ... venture home health company with Asante, delivering clinically integrated care, for the past ...
(Date:10/12/2017)... PA (PRWEB) , ... October 12, 2017 , ... ... is the recipient of a 2017 Folio Magazine Eddie Digital Award for ‘Best B-to-B ... York City on October 11, 2017. , The annual award competition recognizes editorial and ...
Breaking Medicine News(10 mins):
(Date:9/23/2017)... Pa. , Sept. 22, 2017 Janssen ... a complete response letter from the U.S. Food and ... seeking approval of sirukumab for the treatment of moderately ... letter indicates additional clinical data are needed to further ... moderately to severely active RA. ...
(Date:9/19/2017)... Sept. 19, 2017   ZirMed Inc ., a recognized ... announced that it has been ranked #1 by its users ... Rankings 2017 User Survey. ZirMed was recognized as the ... hospitals and medical centers over 200 beds and holds one ... technology user survey history. ...
(Date:9/12/2017)... and NEW YORK , Sept. 12, 2017 ... performance ratings for global supply chains, has published the first annual edition ... CSR performance of more than 20,400 companies evaluated by EcoVadis, based on ... 2015 and 2016. ... EcoVadis Global CSR Risk & Performance Index ...
Breaking Medicine Technology: