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Health & Medicine for Senior Citizens

Pancreatic Cancer Stopped in Early Stages by University of Oklahoma Scientists

‘This is one of the most important studies in pancreatic cancer prevention’ – clinical trials underway

National Cancer Institute Graphic, read more below news report.Jan. 11, 2011 – The most dangerous of cancers – pancreatic – has been eliminated in a research model by the use of an old treatment in a new way during the early stage of the cancer. The researchers at the Peggy and Charles Stephenson Oklahoma Cancer Center say the discovery has far-reaching implications in chemoprevention for high-risk patients.

The research already has sparked a clinical trial in California, and the FDA-approved drug, Gefitinib, should be in clinical trials at OU’s cancer center and others nationwide in about a year.

 

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The research, funded by the National Cancer Institute, appears in the latest issue of Cancer Prevention Research, a journal of the American Association for Cancer Research.

C.V. Rao, Ph.D., and his team of researchers were able to show for the first time that a drug used in current chemotherapy for later stages of pancreatic cancer had a dramatic effect if used earlier. 

With low doses of Gefitinib, which has no known side effects at this level, scientists were able to not only stop pancreatic cancer tumors from growing, but after 41 weeks of treatment, the cancer was gone.

"This is one of the most important studies in pancreatic cancer prevention,” Rao said. "Pancreatic cancer is a poorly understood cancer and the focus has been on treatment in the end stages. But, we found if you start early, there will be a much greater benefit. Our goal is to block the spread of the cancer. That is our best chance at beating this disease."

About Pancreatic Cancer

The American Cancer Society's most recent estimates for pancreatic cancer in the United States are for 2010:

   ● About 43,140 people (21,370 men and 21,770 women) will be diagnosed with pancreatic cancer.

   ● About 36,800 people (18,770 men and 18,030 women) will die of pancreatic cancer

Over the past 15 to 25 years, rates of pancreatic cancer have dropped slightly in men and women. Still, pancreatic cancer remains the fourth leading cause of cancer death overall.

Read more below news story.

The Oklahoma cancer center research team said the finding points to an effective way to stop pancreatic cancer before it reaches later stages of development where the survival rate drops below 6 percent.

Currently, most pancreatic cancer is not identified until the later stages. However, research is moving closer to the development of an early detection test for pancreatic cancer. When that is in place, Oklahoma cancer center researchers believe they now have a method to target the cancer before it spreads.

Rao said OU officials and researchers will meet with other centers, including M.D. Anderson, whose specialists called the research "provocative," to discuss a pilot study in early 2011. Researchers hope to begin a Phase II clinical trial at the centers within 18 months. A Phase I trial is not required since the drug already has approval for human use from the U.S. Food and Drug Administration.

The clinical trials will focus on at-risk patients, particularly those with an inflammation of the pancreas called pancreatitis. The drug also could help other high risk populations, including patients with a family history of pancreatic cancer and American Indian populations or others with Type 2 diabetes.

Gefitinib works by targeting signals of a gene that is among the first to mutate when pancreatic cancer is present. By targeting the signal for tumor growth expressed by the mutated gene, researchers were able to stop the cancer’s procession.

"This gene is the key in 95 percent of cases of pancreatic cancer. It is our best target," Rao said. "By targeting this gene, we can activate or inactivate several other genes and processes down the line."

Rao said the drug also could be effective in lung and colorectal cancer, but it is not known if it would work as well as in pancreatic cancer. The OU College of Pharmacy is assisting in the development of drugs and imaging techniques needed to further test Gefitinib with patients.

Located at the OU Health Sciences Center in Oklahoma City, the Peggy and Charles Stephenson Oklahoma Cancer Center is Oklahoma’s only comprehensive academic cancer center, with significant programs in prevention, research, treatment and education. The center says it is working toward a National Cancer Institute “designated cancer center” status, the gold-standard of cancer research and treatment. More than 100 Ph.D.-level scientists are conducting innovative research at the center, and patients from every county in Oklahoma are treated by one of the largest oncology physicians groups in the state.


More About Pancreatic Cancer

The pancreas is a gland behind your stomach and in front of your spine. It produces juices that help break down food and hormones that help control blood sugar levels.

Cancer of the pancreas is the fourth-leading cause of cancer death in the U.S. Some risk factors for developing pancreatic cancer include
   ● Smoking
   ● Long-term diabetes
   ● Chronic pancreatitis
   ● Certain hereditary disorders

Pancreatic cancer is hard to catch early. It doesn't cause symptoms right away. When you do get symptoms, they are often vague or you may not notice them. They include yellowing of the skin and eyes, pain in the abdomen and back, weight loss and fatigue. Also, because the pancreas is hidden behind other organs, health care providers cannot see or feel the tumors during routine exams. Because it is often found late and it spreads quickly, pancreatic cancer can be hard to treat. Possible treatments include surgery, radiation and chemotherapy.

>> What You Need to Know about Cancer of the Pancreas  (National Cancer Institute)

>> What Is Pancreatic Cancer?  (American Cancer Society)

>> More links at MedlinePlus

 

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