<?xml version="1.0" encoding="utf-8"?>
<recommendedContent xmlns="http://api.mspoke.com">
    <recommendedItem id="20100101_19_446"
                     title="Proteins Linked to Stress-Induced ACS (CME/CE)"
                     score="0.01"
                     href="http://www.medpagetoday.com/Cardiology/AcuteCoronarySyndrome/tb/18373?impressionId=1265776077008"
                     
      The heart-pounding excitement of Sunday&apos;s Super Bowl football game might have sent some fans to hospital with acute coronary syndrome.&lt;br&gt;
&lt;br&gt;But researchers in Germany say it may be possible to distinguish these cases from people whose coronary syndrome wasn&apos;t stress-related.&lt;br&gt;
&lt;br&gt;Two proteins known as endothelin-1 (ET-1) and &lt;span&gt;monocyte&lt;/span&gt; chemoattractant protein-1 (MCP-1) appear to be highly sensitive and specific markers of excitement-induced acute coronary syndromes, according to Ute Wilbert-Lampen, MD, and colleagues at Ludwig-Maximilians-Universit&amp;#228;t in Munich.&lt;/p&gt;
&lt;p&gt;In a cohort study, the two compounds were markedly elevated in people whose coronary syndromes were associated with excitement and stress over World Cup soccer games, the researchers reported in the Feb. 16 issue of the &lt;em&gt;Journal of the American College of Cardiology&lt;/em&gt;.&lt;/p&gt;
&lt;p&gt;And the protein levels were significantly higher than in either healthy controls or a group of matched patients whose coronary syndrome was not associated with the soccer matches, the researchers said.&lt;/p&gt;
&lt;p&gt;Wilbert-Lampen and colleagues reported in 2008 that they had found 2.7-fold spike in the incidence of acute cardiovascular events in association with the 2006 World Cup soccer matches. (See &lt;a href=&quot;http://www.medpagetoday.com/Cardiology/Atherosclerosis/8171&quot; mce_href=&quot;http://www.medpagetoday.com/Cardiology/Atherosclerosis/8171&quot; target=&quot;_blank&quot;&gt;Cardiovascular Events Spike During Critical World Cup Soccer Matches&lt;/a&gt;)&lt;/p&gt;
&lt;p&gt;Although excitement and stress caused the events, exactly how remained unclear, they reported in the journal.&lt;/p&gt;
&lt;p&gt;To help clarify the issue, they looked at 58 representative patients from the earlier analysis for whom blood samples were available. They were compared with the same number of healthy controls and 58 reference patients with acute coronary syndromes&lt;strong&gt; &lt;/strong&gt;who reported no emotional involvement with the World Cup.&lt;/p&gt;
&lt;p&gt;In addition to ET-1 and MCP-1, blood samples were tested for a range of substances, including soluble CD40L (sCD40L), soluble vascular cell adhesion molecule-1 (sVCAM-1), tumor necrosis factor-&amp;#945; (TNF-&amp;#945;), high-sensitivity C-reactive protein (hsCRP), and regulated on activation, normal T-cell expressed and secreted (RANTES).&lt;/p&gt;
&lt;p&gt;The researchers found: &lt;ul&gt; &lt;li&gt;The study group had average ET-1 levels of 4.0 picograms per milliliter, compared with 2.0 for the reference patients and 1.1 for the health controls. Both between-group differences were significant at &lt;em&gt;P&lt;/em&gt;&amp;lt;0.001.&lt;/li&gt; &lt;li&gt;A similar pattern was seen for MCP1 and TNF-&amp;#945;.&lt;/li&gt; &lt;li&gt;The other markers  --  sVCAM-1, hsCRP, and RANTES -- yielded less clear results.&lt;/li&gt; &lt;li&gt;In both groups of patients, ET-1 was significantly correlated (at &lt;em&gt;P&lt;/em&gt;&amp;lt;0.001) with sCD40L and with MCP-1, but other markers were correlated with one or the other or neither.&lt;/li&gt; &lt;/ul&gt;&lt;/p&gt;
&lt;p&gt;In a receiver operating curve analysis, ET-1 and MCP-1 were found to have diagnostic potential, the researchers said, with the areas under the curve being 0.99 and 0.98, respectively.&lt;/p&gt;
&lt;p&gt;In such an analysis, an area under the curve of 1.0 would mean the proposed diagnostic tool would be completely accurate, without either false positives or false negatives.&lt;/p&gt;
&lt;p&gt;Using a cutoff of 3.1 picograms per milliliter, ET-1 had a sensitivity of 100% and a specificity of 96.6%, the researchers said, while a cutoff of 396 picograms per milliliter for MCP-1 resulted in 93.1% sensitivity and 93.1% specificity.&lt;/p&gt;
&lt;p&gt;One implication of the findings, the researchers said, is that it may be valuable to begin developing prophylactic and therapeutic drugs targeting ET-1.&lt;/p&gt;
&lt;p&gt;They noted that because of the design of the original study, a range of information was not available, including data on troponin or stress-hormone levels, cardiovascular risk factors, infarct size, or clinical outcome.&lt;/p&gt;
&lt;p&gt;Despite those gaps, the study has &quot;some exciting features,&quot; according to Karina Davidson, PhD, of Columbia University College of Physicians and Surgeons in New York City.&lt;/p&gt;
&lt;p&gt;Among other things, she wrote in an accompanying editorial, the study provides &quot;evidence for the importance&quot; of ET-1 in stress-induced ischemic syndromes.&lt;/p&gt;
&lt;p&gt;It may now be possible, she argued, to identify what other factors come into play and eventually to determine who is at risk for such events.&lt;/p&gt;
&lt;div style=&quot;float:left;border-style:solid;border-width:1px;border-color:#8dabbc;font-family:arial;font-size:12px;background-color:#DBE9F2;padding:5px;&quot;&gt;&lt;p&gt;The study was supported by Else Kr&amp;#246;ner-Fresenius Stiftung. The researchers did not report potential conflicts.&lt;/p&gt;&lt;/div&gt;&lt;div style=&quot;clear:both;&quot;&gt;&lt;/div&gt;
    </recommendedItem>
    <recommendedItem id="20100101_19_443"
                     title="Evidence-Based Treatment Improves Older Stroke Victims&apos; Chances (CME/CE)"
                     score="0.01"
                     href="http://www.medpagetoday.com/Cardiology/Strokes/tb/18360?impressionId=1265776077008"
                     
      &lt;p&gt;Older stroke patients remain at higher risk for adverse outcomes than younger ones, but the gap has narrowed with wider implementation of evidence-based guidelines, researchers say.&lt;/p&gt;
&lt;p&gt;More than 10% of stroke patients over 80 died in the hospital, compared with 3% of those under age 50, Gregg C. Fonarow, MD, of the University of California Los Angeles, and colleagues reported online in &lt;em&gt;Circulation&lt;/em&gt;.&lt;/p&gt;
&lt;p&gt;But overall use of guideline-recommended therapies improved substantially in older patients from 2003 to 2009, particularly for patients over 90, they said.&lt;/p&gt;
&lt;p&gt;During that time, several hospitals and stroke centers have adopted &quot;Get with the Guidelines,&quot; an intervention to apply evidence-based guidelines to care. Adopters have seen &quot;substantial improvements ... in performance measures for ischemic stroke patients, including pharmacological and nonpharmacological management in each age group,&quot; the researchers wrote.&lt;/p&gt;
&lt;p&gt;Before launching the initiative in 2003, studies generally showed lower use of guideline-recommended therapy and worse outcomes in older stroke patients.&lt;/p&gt;
&lt;p&gt;To assess changes since initiative started, the researchers analyzed more than 502,036 ischemic stroke admissions to 1,256 hospitals participating in the guidelines program between 2003 and 2009. Mean patient age was 71, and 52.5% were women.&lt;/p&gt;
&lt;p&gt;They found that performance on most evidence-based measures was lower in older patients  --  those ages 80 and up  --  compared with younger patients.&lt;/p&gt;
&lt;p&gt;The largest differences were seen in the proportion of eligible patients who received intravenous tissue plasminogen activator (tPA) treatments (51.1% for older patients versus 61.6% for those under 50, &lt;em&gt;P&lt;/em&gt;&amp;lt;0.001).&lt;/p&gt;
&lt;p&gt;Providers were also less likely to treat older stroke patients with lipid-lowering therapies than younger patients (54.2% versus 71.7%, &lt;em&gt;P&lt;/em&gt;&amp;lt;0.001).&lt;/p&gt;
&lt;p&gt;The smallest differences involved antithrombotic therapy within 48 hours of admission and at discharge.&lt;/p&gt;
&lt;p&gt;In terms of outcomes, older patients had a significantly higher inhospital mortality rate (10.3% versus 3%), and they were less likely to be discharged home. Rather, they were more likely to be discharged to a skilled nursing facility (42.1% versus 5.3%, &lt;em&gt;P&lt;/em&gt;&amp;lt;0.001) or hospice (12% versus 0.5%, &lt;em&gt;P&lt;/em&gt;&amp;lt;0.001).&lt;/p&gt;
&lt;p&gt;With each 10-year age increase, patients with ischemic stroke were 31% less likely to be discharged home and 27% more likely to die in the hospital.&lt;/p&gt;
&lt;p&gt;But the researchers said that, generally, the use of guideline-recommended therapies improved substantially in older patients from 2003 to 2009.&lt;/p&gt;
&lt;p&gt;In those ages 90 and older, use of intravenous tPA increased threefold, from 20.4% in 2003 to 62.4% in 2009. And use of lipid lowering therapy increased from 15.6% in 2003 to 71.7%.&lt;/p&gt;
&lt;p&gt;The researchers wrote that by 2009, &quot;many of the age-related differences in care had narrowed or were eliminated.&quot;&lt;/p&gt;
&lt;p&gt;They cautioned, however, that there could be residual confounding by unmeasured factors. For example, physicians may be uncertain about risks versus benefits in treating older patients who are under-represented in RCTs.&lt;/p&gt;
&lt;p&gt;The authors noted that their study was limited by its reliance on the accuracy and completeness of medical records.&lt;/p&gt;
&lt;p&gt;Also, they noted, the &quot;Get with the Guidelines&quot; program tends to attract larger teaching hospitals, which already have a &quot;strong interest in stroke care and quality improvement,&quot; and thus the findings may not be generalizable.&lt;/p&gt;
&lt;div style=&quot;float:left;border-style:solid;border-width:1px;border-color:#8dabbc;font-family:arial;font-size:12px;background-color:#DBE9F2;padding:5px;&quot;&gt;&lt;p&gt;The &quot;Get with the Guidelines&quot; program is supported by the American Heart Association and the American Stroke Association, as well as grants from Pfizer and the Merck-Schering Plough Partnership.&lt;/p&gt;&lt;p&gt;Fonarow reported relationships with Pfizer, Merck/Schering Plough, BMS/Sanofi.&lt;/p&gt;&lt;p&gt;Co-authors reported relationships with Boehringer Ingelheim, Ferrer, CoAxia, Talecris, Concentric Medical, and Cygnis.&lt;/p&gt;&lt;/div&gt;&lt;div style=&quot;clear:both;&quot;&gt;&lt;/div&gt;
    </recommendedItem>
    <recommendedItem id="20100101_19_467"
                     title="FDA Unveils New Safety Plan for Medical Imaging"
                     score="0.01"
                     href="http://www.medpagetoday.com/Radiology/DiagnosticRadiology/tb/18398?impressionId=1265776077008"
                     
      &lt;p&gt;WASHINGTON  --  The Food and Drug Administration (FDA) says it wants to issue new safety requirements for manufacturers of computed tomography (CT) and fluoroscopic devices to reduce unnecessary radiation from medical imaging.&lt;/p&gt;
&lt;p&gt;The FDA&apos;s plan focuses on three procedures with high radiation doses: CT, nuclear medicine studies, and fluoroscopy. These are the greatest contributors to total radiation exposure within the U.S. population, the FDA said. That&apos;s because they require much higher radiation doses than other radiographic procedures, such as standard X-rays, dental X-rays, and mammography.&lt;/p&gt;
&lt;p&gt;&quot;The amount of radiation Americans are exposed to from medical imaging has dramatically increased over the past 20 years,&quot; Jeffrey Shuren, MD, director of the FDA&apos;s Center for Devices and Radiological Health, said in a prepared statement. &quot;The goal of FDA&apos;s initiative is to support the benefits associated with medical imaging while minimizing the risks.&quot;&lt;/p&gt;
&lt;p&gt;While the three procedures have led to early diagnosis of disease, they expose patients to ionizing radiation that may increase lifetime cancer risk  --  although there is debate within the medical community about the extent of the danger.&lt;/p&gt;
&lt;p&gt;Radiologist Joseph Schoepf, MD, director of Cardiovascular Imaging at the Medical University of South Carolina, lauded the FDA&apos;s initiative and said it would restore the public&apos;s trust in imaging.&lt;/p&gt;
&lt;p&gt;&quot;It is important to note, however, that an increase in cancer mortality [from radiation] has not been observed,&quot; he added. &quot;On the contrary, cancer mortality has dramatically decreased over the past decades, in step with increased utilization of medical imaging.&quot;&lt;/p&gt;
&lt;p&gt;The &lt;em&gt;Archives of Internal Medicine &lt;/em&gt;recently published results from two studies indicating that &lt;a href=&quot;http://www.medpagetoday.com/Radiology/DiagnosticRadiology/17530&quot; mce_href=&quot;http://www.medpagetoday.com/Radiology/DiagnosticRadiology/17530&quot; target=&quot;_blank&quot; title=&quot;CT&amp;#8200;Scans&amp;#8200;May&amp;#8200;Deliver&amp;#8200;Higher-than-Expected&amp;#8200;Radiation&amp;#8200;Doses&quot;&gt;CT scans deliver much higher doses of radiation &lt;/a&gt;than previously thought. The FDA has noted that a patient would have to get 400 standard chest X-rays to be exposed to the same level of radiation as just one CT abdomen scan.&lt;/p&gt;
&lt;p&gt;In an accompanying editorial, the journal&apos;s editor, Rita Redberg, MD, wrote that the studies &quot;make us question if we have gotten carried away in our enthusiasm&quot; for CT.&lt;/p&gt;
&lt;p&gt;It&apos;s becoming clear, she said, that the large doses of radiation from CT scans will lead to additional cancers, which must be taken into account when physicians consider CT for their patients.&lt;/p&gt;
&lt;p&gt;By working with healthcare providers and other federal agencies, the FDA says it hopes to promote safer use of medical imaging and increase patient awareness of their radiation exposure. Part of that involves pushing providers to justify their radiation procedures and optimize the radiation dose in each one.&lt;/p&gt;
&lt;p&gt;&lt;span&gt;Schoepf, who serves on several American College of Radiology committees that discuss the proper used of various imaging procedures, approved of the FDA&apos;s goal but cautioned against restrictions that would hinder clinicians.&lt;/span&gt;&lt;/p&gt;
&lt;p&gt;&quot;There is indeed a need for enhanced transparency, better patient education, more dialogue between patients and their healthcare providers, and increased involvement of the patient in the decision process leading up to an imaging study,&quot; Schoepf said.&lt;/p&gt;
&lt;p&gt;&lt;span&gt;&quot;What is often forgotten in this discussion is that serious injury or death, resulting from missing a potentially life-threatening diagnosis if no imaging is performed, is a much greater, more imminent, and very real risk.&quot;&lt;/span&gt;&lt;/p&gt;
&lt;p&gt;In its statement, the FDA said it wants to boost efforts to develop at least one national registry of radiation doses that will capture information from a variety of imaging studies that can be used to establish benchmarks for healthcare facilities to use with patients.&lt;/p&gt;


 &lt;p&gt;Donald Frush, MD, a radiologist at Duke Medical Center and expert in CT radiation doses in children, said that radiation doses for CT examination vary widely, depending on the size of the patient and the body area scanned, among other things.&lt;/p&gt;
    &lt;p&gt;&quot;However, sometimes this variation is not necessary, and the dose may be excessive,&quot; Frush said.&lt;/p&gt;

&lt;p&gt;The ACR launched a similar registry about a year ago, according to spokesman Shawn Farley. The database is intended as a guide so a radiologist can quickly see how levels of radiation delivered in other practices and hospitals compare to what he or she is delivering.&lt;/p&gt;
&lt;p&gt;&quot;Now that the FDA has come out in favor of doing that, we&apos;re hoping that will put a little more weight behind the process and make more facilities want to take part in this,&quot; Farley told &lt;em&gt;MedPage Today. &lt;/em&gt;&lt;/p&gt;


 &lt;p&gt;Schoepf noted that European governments already require a permanent record of radiation exposure for each patient.&lt;/p&gt;
    &lt;p&gt;As a result, manufacturers of radiation equipment, most of whom sell their products in Europe, already have that capability, he said. So it shouldn&apos;t be difficult to implement the same standard in the U.S.&lt;/p&gt;
    &lt;p&gt;&quot;Radiation exposure should be no secret,&quot; Schoepf said.&lt;/p&gt;


&lt;p&gt;The FDA will hold a public meeting March 30 and 31 to hear comments on what types of safety requirements to establish for manufacturers of CT and fluoroscopic devices. Requirements might include: &lt;ul&gt; &lt;li&gt;That the radiation device display, record, and report equipment settings and radiation dose&lt;/li&gt; &lt;li&gt;Alerting users when the dose exceeds the optimal dose for most patients&lt;/li&gt; &lt;li&gt;Increased training for users&lt;/li&gt; &lt;li&gt;Ability to capture and transmit radiation dose information to a patient&apos;s electronic medical record in addition to national dose registries &lt;/li&gt; &lt;/ul&gt;&lt;/p&gt;
&lt;p&gt;&lt;em&gt;This article was developed in collaboration with ABC News. &lt;/em&gt;&lt;img src=&quot;http://www.medpagetoday.com/upload/2009/10/1/14357_1.jpg&quot; mce_src=&quot;http://www.medpagetoday.com/upload/2009/10/1/14357_1.jpg&quot; alt=&quot;&quot;&gt;&lt;/p&gt;
    </recommendedItem>
    <recommendedItem id="20100101_19_466"
                     title="Surgery Trumps Lifestyle Change for Teen Weight Loss (CME/CE)"
                     score="0.01"
                     href="http://www.medpagetoday.com/Pediatrics/Obesity/tb/18397?impressionId=1265776077008"
                     
      &lt;p&gt;Gastric banding resulted in significantly greater weight loss in obese teens than an intensive lifestyle modification program, a randomized trial showed.&lt;/p&gt;
&lt;p&gt;In the two-year study, 84% of patients in the surgery group lost at least half of their excess weight, compared with 12% who underwent the lifestyle intervention (&lt;em&gt;P&lt;/em&gt;&amp;lt;0.001), according to Paul O&apos;Brien, MD, of Monash University in Melbourne, Australia, and colleagues.&lt;/p&gt;
&lt;p&gt;None of the teens who had surgery had metabolic syndrome at the end of follow-up, compared with 22% in the control group (&lt;em&gt;P&lt;/em&gt;=0.025), the researchers reported in the Feb. 10 issue of the &lt;em&gt;Journal of the American Medical Association&lt;/em&gt;.&lt;/p&gt;
&lt;p&gt;Although the improvements were substantial, O&apos;Brien and his colleagues stressed that &quot;the gastric banding approach to weight loss is not a quick fix.&quot;&lt;/p&gt;
&lt;p&gt;&quot;For optimal effectiveness,&quot; they wrote, &quot;it requires long-term supportive follow-up by trained health professionals.&quot;&lt;/p&gt;
&lt;p&gt;They also noted that the study demonstrates that lifestyle interventions can be effective for some teens and should remain the first option.&lt;/p&gt;
&lt;p&gt;Surgeons contacted for comment on the study unanimously touted the results as evidence that bariatric surgery can be a safe and effective means of weight loss for obese adolescents, a topic that remains controversial.&lt;/p&gt;
&lt;p&gt;J. Christopher Eagon, MD, a bariatric surgeon at Washington University in St. Louis, noted in an e-mail that the significance of the study lies in the fact that participants were randomized between surgery and medical management of weight.&lt;/p&gt;
&lt;p&gt;&quot;This helps to eliminate biases that may have been present in other studies of the effectiveness of bariatric surgery and should make the case for the benefits of surgery more compelling,&quot; Eagon wrote.&lt;/p&gt;
&lt;p&gt;There are more than five million obese adolescents in the U.S., according to O&apos;Brien and his colleagues, and obesity-related complications, once rare in pediatric populations, are becoming more common.&lt;/p&gt;
&lt;p&gt;Because of the generally disappointing results of lifestyle programs aimed at improving diet, increasing exercise, and modifying unhealthy behaviors, bariatric surgery, widely used in adults, has been explored as a strategy for reducing weight in these patients.&lt;/p&gt;
&lt;p&gt;But no randomized trials of bariatric surgery had been conducted in adolescents.&lt;/p&gt;
&lt;p&gt;So O&apos;Brien&apos;s group randomized 50 obese teens ages 14 to 18 (mean 16.5) to laparoscopic adjustable gastric banding or an intensive, supervised lifestyle modification program.&lt;/p&gt;
&lt;p&gt;The participants all had a body mass index of at least 35 kg/m&lt;sup&gt;2&lt;/sup&gt; and had obesity-related complications, such as hypertension, metabolic syndrome, asthma, back pain, physical limitations, and psychosocial difficulties.&lt;/p&gt;
&lt;p&gt;All had previously failed to lose weight through lifestyle changes.&lt;/p&gt;
&lt;p&gt;Before the study began, prospective participants attended a two-month program teaching them about healthy eating and the importance of physical activity.&lt;/p&gt;
&lt;p&gt;Those randomized to the lifestyle intervention were on a diet of 800 to 2,000 calories a day, and were instructed to increase activity and decrease sedentary behavior at regular visits with a physician, dietitian, exercise coordinator, nurse, and sports medicine physician. The program included six weeks with a personal trainer.&lt;/p&gt;
&lt;p&gt;Teens in the surgery group were given instructions on correct eating and exercising at regular visits.&lt;/p&gt;
&lt;p&gt;Through two years, all but one of the teens in the surgery group completed the study; 18 of 25 in the lifestyle group completed.&lt;/p&gt;
&lt;p&gt;The mean weight loss was significantly greater in the surgery group (76.3 pounds versus 6.6), which equated to a significantly greater percentage of excess weight lost (78.8% versus 13.2%).&lt;/p&gt;
&lt;p&gt;The mean decrease in BMI was 12.7 kg/m&lt;sup&gt;2&lt;/sup&gt; in the surgery group and 1.3 kg/m&lt;sup&gt;2&lt;/sup&gt; in the lifestyle modification group.&lt;/p&gt;
&lt;p&gt;All differences were significant at &lt;em&gt;P&lt;/em&gt;&amp;lt;0.001.&lt;/p&gt;
&lt;p&gt;Insulin sensitivity improved in both groups, but to a larger extent in the surgery group (&lt;em&gt;P&lt;/em&gt;&amp;lt;0.001).&lt;/p&gt;
&lt;p&gt;Quality of life was also improved in the surgery group.&lt;/p&gt;
&lt;p&gt;Overall, adverse events occurred at similar rates in the surgery (48%) and lifestyle modification (44%) groups.&lt;/p&gt;
&lt;p&gt;There were no perioperative adverse events in the surgery group, but seven patients required revisional procedures during follow-up, for proximal pouch dilatation or tubing injury.&lt;/p&gt;
&lt;p&gt;The researchers said eating small meals slowly is an important way to avoid these problems.&lt;/p&gt;
&lt;p&gt;In an accompanying editorial, Edward Livingston, MD, a surgeon at the University of Texas Southwestern Medical Center in Dallas, said the high rate of revisional procedures is significant because the study authors &quot;are among the most experienced group in the world with these operations, suggesting that these complication rates will probably be higher in actual community practice.&quot;&lt;/p&gt;
&lt;p&gt;Added Jonathan Schoen, MD, a bariatric surgeon at the University of Colorado Hospital in Denver, in an e-mail: &quot;One thing to keep in mind is that the results they get in Australia with the band are the best in the world and are not uniformly reproducible.&quot;&lt;/p&gt;
&lt;p&gt;In addition to the uncertain generalizability to other settings, the researchers said the study may be limited by its length, which may not be long enough to assess outcomes from the surgery over time.&lt;/p&gt;
&lt;div style=&quot;float:left;border-style:solid;border-width:1px;border-color:#8dabbc;font-family:arial;font-size:12px;background-color:#DBE9F2;padding:5px;&quot;&gt;&lt;p&gt;The study was funded by a grant from the National Health and Medical Research Council. The laparoscopic adjustable gastric bands used in the study were provided by the manufacturer, Allergan. The Center for Obesity Research and Education receives an unrestricted research support grant from Allergan.&lt;/p&gt;&lt;p&gt;O&apos;Brien did not make any financial disclosures. One of his co-authors reported having relationships with Allergan, Bariatric Advantage, Scientific Intake, SP Health Co., Optifast, Abbott Australasia, Eli Lilly Australia, Merck Sharp &amp;amp; Dohme Australia, Nestle Australia, and Roche Products Australia.&lt;/p&gt;&lt;p&gt;Livingston did not make any financial disclosures.&lt;/p&gt;&lt;/div&gt;&lt;div style=&quot;clear:both;&quot;&gt;&lt;/div&gt;&lt;p&gt;&lt;em&gt;This article was developed in collaboration with ABC News. &lt;/em&gt;&lt;img src=&quot;http://www.medpagetoday.com/upload/2009/10/1/14357_1.jpg&quot; mce_src=&quot;http://www.medpagetoday.com/upload/2009/10/1/14357_1.jpg&quot; alt=&quot;&quot;&gt;&lt;/p&gt;
    </recommendedItem>
    <recommendedItem id="20100101_19_465"
                     title="Genetic Pathways Play Role in NSCLC Survival (CME/CE)"
                     score="0.01"
                     href="http://www.medpagetoday.com/HematologyOncology/LungCancer/tb/18396?impressionId=1265776077008"
                     
      Researchers say they&apos;ve found genetic characteristics associated with age and sex differences observed in recurrence-free survival among non-small cell lung cancer patients.&lt;br&gt;
&lt;br&gt;Older patients at higher risk for recurrence had increased activation of wound-healing and invasiveness pathways, while high-risk women had increased activation of invasiveness and &lt;em&gt;STAT3&lt;/em&gt; pathways, Anil Potti, MD, of Duke University, and colleagues reported in the Feb. 10 issue of the &lt;em&gt;Journal of the American Medical Association&lt;/em&gt;.&lt;br&gt;
&lt;br&gt;High-risk men had increased activation of the &lt;em&gt;STAT3&lt;/em&gt;, tumor necrosis factor, &lt;em&gt;EGFR&lt;/em&gt;, and wound-healing pathways, Potti the researchers found.&lt;br&gt;
&lt;br&gt;&quot;This analysis represents one of the first large-scale attempts to comprehensively characterize the biology of early-stage [non-small cell lung cancer] at a molecular pathway level and demonstrates a clear distinction in gene expression profiles within relevant age and sex categories,&quot; they wrote.&lt;p&gt;&lt;/p&gt;
&lt;p&gt;There&apos;s lots of evidence that clinical and pathologic factors are clinically relevant, the researchers noted, but little is known about the underlying biological differences in lung tumor gene expression among patients with different characteristics, including age and gender.&lt;/p&gt;
&lt;p&gt;So Potti and colleagues conducted a retrospective analysis of 787 patients with predominantly early stage non-small cell lung cancer at Duke University from July 2008 to June 2009.&lt;/p&gt;
&lt;p&gt;They stratified their results by risk of recurrence, age, and gender.&lt;/p&gt;
&lt;p&gt;They found that high-risk patients under 70 had greater activation of the &lt;em&gt;Src&lt;/em&gt; and tumor necrosis factor pathways than low-risk patients (25% versus 6%, &lt;em&gt;P&lt;/em&gt;&amp;lt;0.001; and 76% versus 42%, &lt;em&gt;P&lt;/em&gt;&amp;lt;0.001, respectively).&lt;/p&gt;
&lt;p&gt;In patients 70 and older, those at high risk for recurrence had greater activation of the wound-healing and invasiveness pathways than low-risk patients (40% versus 24%, &lt;em&gt;P&lt;/em&gt;=0.02; and 64% versus 20%, &lt;em&gt;P&lt;/em&gt;&amp;lt;0.001, respectively).&lt;/p&gt;
&lt;p&gt;&quot;Although this is a novel finding, biologically this is not entirely unexpected,&quot; the researchers wrote in reference to the data in older patients. &quot;The invasiveness and wound-healing gene signatures likely identify tumors at high risk of metastasis, along with the wound-healing signature identifying activation of angiogenesis pathways.&quot;&lt;/p&gt;
&lt;p&gt;Their findings also corroborated previous evidence that biology and clinical course of the disease are sex-specific, as the analysis found that women had significantly better progression-free survival than men (&lt;em&gt;P&lt;/em&gt;=0.008).&lt;/p&gt;
&lt;p&gt;In general, men had a higher probability of activation of these pathways than women:&lt;ul&gt;&lt;li&gt;Chromosomal instability (&lt;em&gt;P&lt;/em&gt;=0.001)&lt;/li&gt;&lt;li&gt;Epigenetic stem cell (&lt;em&gt;P&lt;/em&gt;=0.03)&lt;/li&gt;&lt;li&gt;Invasiveness (&lt;em&gt;P&lt;/em&gt;=0.005)&lt;/li&gt;&lt;li&gt;&lt;em&gt;Myc&lt;/em&gt; (&lt;em&gt;P&lt;/em&gt;=0.02)&lt;/li&gt;&lt;li&gt;Wound-healing (&lt;em&gt;P&lt;/em&gt;=0.004)&lt;/li&gt;&lt;/ul&gt;&lt;/p&gt;
&lt;p&gt;Women, meanwhile, had a higher probability of activation of the &lt;em&gt;E2F1&lt;/em&gt; pathway (&lt;em&gt;P&lt;/em&gt;=0.04).&lt;/p&gt;
&lt;p&gt;When stratified by risk, high-risk women had increased activation of the invasiveness and &lt;em&gt;STAT3&lt;/em&gt; pathways compared with low-risk women (99% versus 2%, &lt;em&gt;P&lt;/em&gt;&amp;lt;0.001; and 72% versus 35%, &lt;em&gt;P&lt;/em&gt;&amp;lt;0.001, respectively).&lt;/p&gt;
&lt;p&gt;Compared with low-risk men, those with high risk had increased activation of the following pathways:&lt;ul&gt;&lt;li&gt;&lt;em&gt;STAT3&lt;/em&gt; (87% versus 18%, &lt;em&gt;P&lt;/em&gt;&amp;lt;0.001)&lt;/li&gt;&lt;li&gt;Tumor necrosis factor (90% versus 46%, &lt;em&gt;P&lt;/em&gt;&amp;lt;0.001) &lt;/li&gt;&lt;li&gt;&lt;em&gt;EGFR&lt;/em&gt; (13% versus 2%, &lt;em&gt;P&lt;/em&gt;&amp;lt;0.001)&lt;/li&gt;&lt;li&gt;Wound-healing pathways (50% versus 22%, &lt;em&gt;P&lt;/em&gt;&amp;lt;0.001)&lt;/li&gt;&lt;/ul&gt;&lt;/p&gt;
&lt;p&gt;Multivariate analyses confirmed pathway-based subphenotypes in women (HR 2.02, 95% CI 1.34 to 3.03, &lt;em&gt;P&lt;/em&gt;&amp;lt;0.001) and in patients under 70 (HR 1.83, 95% CI 1.24 to 2.71, &lt;em&gt;P&lt;/em&gt;=0.003).&lt;/p&gt;
&lt;p&gt;&quot;While differences in clinical outcomes and the biology of [non-small cell lung cancer] based on age and sex have been previously noted, we were able to describe the molecular networks contributing to these differences,&quot; the researchers wrote.&lt;/p&gt;
&lt;p&gt;They said the findings are &quot;apt for therapeutic interventions when planning clinical trials with drugs that target specific pathway-related abnormalities or tumor biology.&quot;&lt;/p&gt;
&lt;p&gt;&quot;With genomic assays now being increasingly practical and clinically applicable, with turnaround times of five to seven days,&quot; they concluded, &quot;we believe our findings, while hypothesis generating and needing further validation, represent a step forward in defining pathway-driven cohorts of [non-small cell lung cancer] that likely explain the age-and sex-specific differences.&quot;&lt;/p&gt;
&lt;div style=&quot;float:left;border-style:solid;border-width:1px;border-color:#8dabbc;font-family:arial;font-size:12px;background-color:#DBE9F2;padding:5px;&quot;&gt;&lt;p&gt;The study was supported by grants from the Emilene Brown Cancer Research Fund, the Harold and Linda Chapman Lung Cancer Fund, the Jimmy V Foundation, the American Cancer Society, and the National Cancer Institute.&lt;/p&gt;&lt;p&gt;The researchers reported no conflicts of interest.&lt;/p&gt;&lt;/div&gt;&lt;div style=&quot;clear:both;&quot;&gt;&lt;/div&gt;
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