Featured Research

from universities, journals, and other organizations

Promising new drug could help patients battling deadly and difficult to treat form of melanoma

Date:
March 8, 2012
Source:
California Pacific Medical Center
Summary:
Researchers say they may have discovered a new drug for the treatment of metastatic melanoma, one that uses the patient’s own tumor cells to customize the therapy.

Researchers say they may have discovered a new drug for the treatment of metastatic melanoma, one that uses the patient's own tumor cells to customize the therapy. The findings are published in the March issue of the journal Clinical Cancer Research.

The drug is sunitinib, which has already been approved by the FDA for the treatment of kidney cancer and gastrointestinal stromal cancer. In this Phase II clinical trial sunitinib proved effective against rare forms of melanoma that occur on parts of the body that the sun doesn't hit -- such as the mucosal surfaces of the mouth, the soles of the feet, and the palms of the hand.

"This form of skin cancer is particularly difficult to treat because it is resistant to chemotherapy, one of the standard therapies for most forms of cancer," says David Minor, MD, Director of Inpatient Oncology at California Pacific Medical Center -- part of the Sutter Health network -- and the co-author of the article. "Studies show that single-agent chemotherapy only produces a response rate of between 5 to 20 percent in patients with this form of cancer. So having one that produces a response of more than 50 percent is a big advance."

The forms of melanoma that were targeted in this study all have mutations in a gene called KIT, the tyrosine kinase receptor gene. The mutation makes an abnormal protein which then drives the growth of the tumor cell. Sunitinib works by turning off that protein and slowing down the cancer growth.

The researchers tested sunitinib in ten patients with advanced stage 4 metastatic melanoma who had the KIT mutation. Of those ten, four were able to complete the trial. Three of the four responded positively to the medication; one had a complete disappearance of her liver metastases for 15 months; the other two had remissions of seven months and one month.

"We need to be cautious because of the small number of patients involved in this trial," says Mohammed Kashani-Sabet, MD, a senior researcher at the CPMC Research Institute, Medical Director of CPMC's Center for Melanoma Research and Treatment, and the co-author of the study. "However, these results are encouraging because they are far better than we would expect to see with chemotherapy for this form of melanoma, and for this stage of the disease."

The researchers say that melanoma, like all cancers, is different in different people and that there are different gene mutations depending on the form. By identifying those who have the KIT mutation -- and sunitinib would not help a patient unless they had that mutation -- they are able to personalize the cancer therapy.

Because it has already been approved for the treatment of other cancers sunitinib has been well studied in larger patient populations. Side effects can include fatigue, low blood counts and a rash, but it is otherwise well tolerated by most people taking it.

The next step is to test the drug in a larger multi-center trial, possibly even involving patients at an earlier stage of the disease.


Story Source:

The above story is based on materials provided by California Pacific Medical Center. Note: Materials may be edited for content and length.


Journal Reference:

  1. D. R. Minor, M. Kashani-Sabet, M. Garrido, S. J. O'Day, O. Hamid, B. C. Bastian. Sunitinib Therapy for Melanoma Patients with KIT Mutations. Clinical Cancer Research, 2012; 18 (5): 1457 DOI: 10.1158/1078-0432.CCR-11-1987

Cite This Page:

California Pacific Medical Center. "Promising new drug could help patients battling deadly and difficult to treat form of melanoma." ScienceDaily. ScienceDaily, 8 March 2012. <www.sciencedaily.com/releases/2012/03/120308192252.htm>.
California Pacific Medical Center. (2012, March 8). Promising new drug could help patients battling deadly and difficult to treat form of melanoma. ScienceDaily. Retrieved September 19, 2014 from www.sciencedaily.com/releases/2012/03/120308192252.htm
California Pacific Medical Center. "Promising new drug could help patients battling deadly and difficult to treat form of melanoma." ScienceDaily. www.sciencedaily.com/releases/2012/03/120308192252.htm (accessed September 19, 2014).

Share This



More Health & Medicine News

Friday, September 19, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Could Grief Affect The Immune Systems Of Senior Citizens?

Could Grief Affect The Immune Systems Of Senior Citizens?

Newsy (Sep. 19, 2014) The study found elderly people are much more likely to become susceptible to infection than younger adults going though a similar situation. Video provided by Newsy
Powered by NewsLook.com
Jury Delivers Verdict in Salmonella Trial

Jury Delivers Verdict in Salmonella Trial

AP (Sep. 19, 2014) A federal jury has convicted three people in connection with an outbreak of salmonella poisoning five years ago that sickened hundreds of people and was linked to a number of deaths. (Sept. 19) Video provided by AP
Powered by NewsLook.com
How The 'Angelina Jolie Effect' Increased Cancer Screenings

How The 'Angelina Jolie Effect' Increased Cancer Screenings

Newsy (Sep. 19, 2014) Angelina's Jolie's decision to undergo a preventative mastectomy in 2013 inspired many women to seek early screenings for the disease. Video provided by Newsy
Powered by NewsLook.com
The Cost of Ebola

The Cost of Ebola

Reuters - Business Video Online (Sep. 18, 2014) As Sierra Leone prepares for a three-day "lockdown" in its latest bid to stem the spread of Ebola, Ciara Lee looks at the financial implications of fighting the largest ever outbreak of the disease. Video provided by Reuters
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:

Breaking News:
from the past week

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile: iPhone Android Web
Follow: Facebook Twitter Google+
Subscribe: RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins