UBC Home Page -
UBC Home Page -
UBC Home Page UBC Home Page -
-
-
News Events Directories Search UBC myUBC Login
-
- -
UBC Public Affairs
News
UBC Reports
Media Releases
Past Media Releases
Services for Media
Services for the Community
Services for UBC Faculty & Staff
Find UBC Experts
Search Site
-

Media Release | Dec. 10, 2008

UBC Researchers Discover Gene Mutation that Causes Eye Cancer

A University of British Columbia geneticist has discovered a gene mutation that can cause the most common eye cancer -- uveal melanoma.

Catherine Van Raamsdonk, an assistant professor of medical genetics in the UBC Faculty of Medicine and a team of researchers, have discovered a genetic mutation in a gene called GNAQ that could be responsible for 45 per cent of the cases of uveal melanoma.

The findings, published today in Nature, will allow researchers to develop therapeutic interventions against some melanomas.

“We discovered that GNAQ regulates melanocyte survival,” says Van Raamsdonk. “When the GNAQ gene is mutated it leads to unregulated growth of melanocytes. Since cancer is a disease of unregulated cell growth, our findings led us to the discovery that a genetic mutation of the GNAQ gene causes uveal melanoma.”

Uveal melanoma is a cancer arising from melanocytes located in the uveal tract. The uveal tract is one of the three layers that make up the wall of the eye. A melanoma is unregulated growth of melanocytes. Melanocytes are also found in the skin and are cells linked to a life-threatening form of skin cancer.

The mutation to GNAQ leads to the activation of a signaling pathway that has previously been implicated in many other types of melanoma. The researchers also found that this mutation is a key factor in the development of a type of benign skin mole -- blue naevi.

“Prior to our work, the mutations responsible for uveal melanoma were completely unknown,” says Van Raamsdonk. “No other research looked at mutations in GNAQ. The next step is to develop an effective treatment by targeting the specific biological processes that this mutated gene controls.”

Uveal melanoma, the most common eye cancer, affects one in 13,000 people. It is a highly aggressive cancer without any effective treatment options once it metastasizes. Although it only accounts for approximately five per cent of all melanomas, it represents the most common eye cancer in the United States.

The research was funded by a grant from the Canadian Institute for Health Research and performed with support from collaborators at the Centre for Molecular Medicine and Therapeutics at Child & Family Research Institute in British Columbia, Stanford University and the University of California at San Francisco.

The Faculty of Medicine at UBC provides innovative programs in the health and life sciences, teaching students at the undergraduate, graduate and postgraduate levels, and generates more than $200 million in research funding each year. www.med.ubc.ca

The Canadian Institutes of Health Research (CIHR) is the Government of Canada’s agency for health research. CIHR’s mission is to create new scientific knowledge and to catalyze its translation into improved health, more effective health services and products, and a strengthened Canadian health-care system. Composed of 13 Institutes, CIHR provides leadership and support to more than 11,000 health researchers and trainees across Canada. www.cihr-irsc.gc.ca

- 30 -

- - -

Contact

Catherine Loiacono
UBC Public Affairs
Tel: 604.822.2644
Cell: 604.209.3048
E-mail: catherine.loiacono@ubc.ca

-

Last reviewed 11-Dec-2008

to top | UBC.ca » UBC Public Affairs

UBC Public Affairs
310 - 6251 Cecil Green Park Road, Vancouver, BC Canada V6T 1Z1
tel 604.822.3131 | fax 604.822.2684 | e-mail public.affairs@ubc.ca

© Copyright The University of British Columbia, all rights reserved.