Navigation Links
New research from Rhode Island Hospital may help predict outcomes for stomach cancer patients
Date:7/16/2008

PROVIDENCE, R.I. Researchers at Rhode Island Hospital have identified two potential molecular markers that may predict outcomes for patients with stomach cancer, one of the most common and fatal cancers worldwide.

According to the study, published in the July 1 issue of Clinical Cancer Research, patients who had poor outcomes following surgery for stomach cancer also had extremely low amounts of two proteins, known as gastrokine 1 and 2 (GKN1 and GKN2), which are produced by normal stomach cells.

The study's findings confirm previous research showing that once stomach cells become cancerous, they manufacture very low amounts of GKN1 and GKN2. However, this is the first known study to link these low protein levels with outcomes following stomach cancer surgery. Researchers say this discovery could eventually help physicians better determine and individualize therapy for stomach cancer, including which patients should be offered chemotherapy and other treatments in addition to surgery.

"Unfortunately, stomach cancer is difficult to cure unless it's discovered early, but because the early stage of the disease has very few symptoms, the cancer is usually advanced by the time it's diagnosed," says lead author Steven Moss, MD, a gastroenterologist with Rhode Island Hospital and an associate professor of medicine at The Warren Alpert Medical School of Brown University.

"That's what makes our findings so significant, because if the potential markers identified in our study can help predict a patient's prognosis, we can decide right away which course of action to take and hopefully help patients live longer and more comfortably," he adds.

According to the National Cancer Institute, approximately 760,000 cases of stomach cancer are diagnosed worldwide each year. Microscopically, stomach cancers can be subdivided into those which appear "diffuse" (a more aggressive form of cancer that can occur throughout the stomach and is more likely to spread) or "intestinal" (resembling the cells normally found only in the small or large intestines). Stomach cancers of both types are often triggered by a chronic infection brought on by Helicobacter pylori (H. pylori), a common bacterium that causes stomach inflammation and ulcers. Surgery is the most common treatment for stomach cancer and can include partial or full removal of the stomach. The five-year relative survival rate of patients with stomach cancer is 24 percent.

Moss, an expert on H.pylori, and colleagues initially set out to learn more about what the bacterium does to normal stomach cells. They focused on GKN1 and GKN2 because these proteins are also suppressed by stomach infections caused by H. pylori.

After looking at tissue samples from more than 150 stomach cancer patients who underwent surgery, the researchers discovered a near total suppression of GKN1 and GKN2 in the majority of patients. This was particularly evident in those patients with the diffuse variant of stomach cancer. More than three-quarters of these patients had extremely low levels of GKN1 and 85 percent had nearly nonexistent levels of GKN2.

Furthermore, in those patients with the intestinal variant of stomach cancer, very low levels of GKN 1 or GKN 2 at the time of surgery were associated with a significantly worse outcome. The median survival was about two years in these patients compared to a survival of more than 10 years for patients with normal levels of GKN1 or GKN2.

Researchers do not yet know the exact function of GKN1 and GKN2. They say further studies are needed to demonstrate the mechanisms responsible for the loss of GKN1 and GKN2 in this patient popoulation as well as the clinical biomarker potential of these two proteins.

The study included tissue samples from 155 patients with stomach cancer (81 men and 74 women) who underwent surgery at Rhode Island Hospital and The Miriam Hospital, both in Providence, R.I. The average age at surgery was 72 years. All four stages of cancer were represented in the study, including 37 patients with Stage I, 44 patients with Stage II, 34 patients with Stage III, and 40 patients with Stage IV. More than 61 patients were being treated for the intestinal variant of stomach cancer while 90 patients had the diffuse variant.


'/>"/>

Contact: Jessica Collins Grimes
jgrimes2@lifespan.org
401-432-1328
Lifespan
Source:Eurekalert

Related medicine news :

1. Stanford researchers find culprit in aging muscles that heal poorly
2. Children of depressed moms do better when dad is involved, SLU researcher finds
3. UCLA researchers identify markers that may predict diabetes in still-healthy people
4. Mayo Clinic researchers discover new diagnostic test for detecting infection in prosthetic joints
5. New research shows how chronic stress worsens neurodegenerative disease course
6. New research explores newborn in-hospital weight loss
7. Research may unlock mystery of autisms origin in the brain
8. Bipolar disorder relapses halved by Melbourne researchers
9. HIVs impact in Zimbabwe explored in new research
10. U.S. Research Funding Continues to Flatten as U.S. Health Costs Climb - in August 31 Science
11. Cell that triggers symptoms in allergy attacks can also limit damage, Stanford researchers find
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:2/23/2017)... Chapel Hill, NC (PRWEB) , ... February 23, 2017 , ... ... the Platinum Sponsor for ACPA’s 74th Annual Meeting. KLS is a longtime supporter ... in 2017 as an exhibitor and Platinum Sponsor," said Dr. Bob Havlik, 2017 ACPA ...
(Date:2/23/2017)... ... ... Hamlin Dental Group and Dr. Hamid Reza, dentist in North Hollywood ... of February, patients who visit Hamlin Dental Group will receive a ticket for a ... the Cheesecake Factory. , Tickets are available for routine dental visits and other ...
(Date:2/23/2017)... ... February 23, 2017 , ... EBSCO ... the National Institute for Health and Care Excellence (NICE) framework. The ... National Health Service (NHS) to search, order and purchase medical and healthcare-related content ...
(Date:2/23/2017)... Nevada (PRWEB) , ... February 23, 2017 , ... Dr. ... Avenue in Henderson, NV 89052. Dr. Mahon was named a 2017 Top Patient Rated ... Doctors is an online directory that recognizes local physicians and dentists who have ...
(Date:2/23/2017)... ... February 23, 2017 , ... ... in clinical trials, today announced that Premier Research, a leading clinical development service ... Clinical trials are becoming increasingly complex, due in part to an array of ...
Breaking Medicine News(10 mins):
(Date:2/24/2017)... HILL, N.C. , Feb. 24, 2017 /PRNewswire/ ... are exploring ways to increase their self-service capabilities ... Health Care Providers (HCPs). New research ... many pharma organizations have developed self-service website portals ... electronically.  This is just one of many findings ...
(Date:2/24/2017)... ITL Limited, ( ASX : ITD ), une société de ... excellents résultats semestriels clos le 31 décembre 2016 par ... « Résultats et mise à jour sur la croissance biomédicale ... Faits marquants Bénéfice ... hausse de 104 %) Bénéfice par action ...
(Date:2/24/2017)... , Feb 24, 2017 ... Committee,s proposal for a new Board of Directors that ... The 2016-2017 Nomination Committee comprises representatives of the company,s ... quarter of 2016 who have accepted a seat on ... The composition of the 2016-2017 Nomination Committee was as ...
Breaking Medicine Technology: