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Serum Test Could Identify Lung Cancer in People Who Never Smoked

April 4, 2011 By AACR

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Biomarker panel in serum has 83 percent sensitivity/specificity.

As many as 25 percent of lung cancer patients have never smoked.

ORLANDO, Fla. – A panel of biomarkers appears to be able to identify the presence of lung cancer in the blood samples of people who have never smoked, according to data presented at the AACR 102nd Annual Meeting 2011, held here April 2-6.

While lung cancer has long been linked to smoking, approximately one-fourth of patients with lung cancer have never smoked. Researchers are working on ways to identify the presence of lung cancer in these patients.

Charlie Birse, Ph.D., associate director of product development at Celera Corporation, and colleagues are investigating the potential for a serum test that would examine the reliability of a proprietary panel of biomarkers for lung cancer. The goal is to administer this test in patients with suspect chest scans using computed axial tomography (CT) technology.

“In addition to intentional CT scans for lung cancer, many people undergo chest scans for heart disease prevention or other conditions and incidental nodules appear in the lungs that may or may not be benign,” said Birse. “This panel of biomarkers would allow these imaging tests to be further evaluated and provide a degree of certainty in diagnosis.”

Birse and colleagues examined more than 600 specimens. Samples were randomly divided into a training set comprised of patients with non-small cell lung cancer (NSCLC) who were smokers and matched controls followed by a testing set of additional NSCLC cases and matched controls. Once the researchers established the biomarkers, they conducted additional studies in 80 people who have never smoked, 40 of whom had varied stages of cancer and histological cell types and 40 control subjects matched by age and gender.

Researchers found strong performance with a sensitivity and a specificity of 83 percent in identifying lung cancer. All stages of lung cancer and histological cell types were distinguished.

“While promising, these findings still need to be confirmed in larger sets,” Birse said.

This abstract was presented at an AACR press conference on Monday, April 4 at 8:30 a.m. ET in room W313 of the Orange County Convention Center.

# # #

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The mission of the American Association for Cancer Research is to prevent and cure cancer. Founded in 1907, the AACR is the worlds oldest and largest professional organization dedicated to advancing cancer research. The membership includes 33,000 basic, translational and clinical researchers; health care professionals; and cancer survivors and advocates in the United States and more than 90 other countries. The AACR marshals the full spectrum of expertise from the cancer community to accelerate progress in the prevention, diagnosis and treatment of cancer through high-quality scientific and educational programs. It funds innovative, meritorious research grants, research fellowships and career development awards. The AACR Annual Meeting attracts more than 18,000 participants who share the latest discoveries and developments in the field. Special conferences throughout the year present novel data across a wide variety of topics in cancer research, treatment and patient care. Including Cancer Discovery, the AACR publishes seven major peer-reviewed journals: Cancer Research; Clinical Cancer Research; Molecular Cancer Therapeutics; Molecular Cancer Research; Cancer Epidemiology, Biomarkers & Prevention; and Cancer Prevention Research. AACR journals represented 20 percent of the market share of total citations in 2009. The AACR also publishes CR, a magazine for cancer survivors and their families, patient advocates, physicians and scientists.

Media Contact:

Jeremy Moore

(267) 646-0557

Jeremy.Moore@aacr.org

In Orlando, April 2-6:

(407) 685-4001

SOURCE

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