As doctors become more familiar with using biomarkers to monitor Crohn’s disease, clinical laboratories may play a greater role in that process
New evidence-based guidelines from the American Gastroenterological Association (AGA) that call for using specific biomarkers to help manage Crohn’s disease (CD) may decrease the number of invasive procedures patients must undergo and increase the role clinical laboratories play in monitoring the disease.
The new AGA guidelines “recommend using the C-reactive protein (CRP) biomarker in blood and the fecal calprotectin (FCP) biomarker in stool to measure inflammation levels and assess whether Crohn’s disease is in remission or active,” Medical News Today reported.
Crohn’s disease is a chronic inflammatory bowel disease (IBD) that causes inflammation in the digestive tract, primarily in the small and large intestine. The cause of the disease is unknown, but genetics may play a role.
Typically, CD patients must undergo repeated colonoscopies to monitor the disease’s progression or remission. This has long been standard practice. Now, however, “AGA recommends the use of biomarkers in addition to colonoscopy and imaging studies,” according to an AGA news release. This hints at a greater role for clinical laboratories in helping physicians manage patients with Crohn’s Disease.
“Patients’ symptoms do not always match endoscopic findings, so biomarkers are a useful tool to understand and monitor the status of inflammation and guide decision making in patients with Crohn’s disease,” said gastroenterologist Siddharth Singh, MD, Assistant Professor of Medicine at UC San Diego Health and a co-author of the new AGA guidelines.
The AGA’s new guidelines demonstrate how medical science is generating new insights about how multiple biomarkers can be associated for diagnosis/management of a disease in ways that change the standard of care, particularly if it can reduce invasive procedures for the patient by the use of less invasive methods (such as a venous blood draw instead of a colonoscopy).
“Based on this guideline, biomarkers are no longer considered experimental and should be an integral part of inflammatory bowel disease care,” Ashwin Ananthakrishnan MD (above), a gastroenterologist at Massachusetts General Hospital and co-author of the guidelines, told Medical News Today. Under the new AGA guidelines, clinical laboratories will play a greater role in helping patients monitor their disease. (Photo copyright: Massachusetts General Hospital.)
Patient’s Needs Determine Biomarker vs Endoscopy Monitoring
AGA’s new guidelines could give patients a more comfortable, cost-effective, and possibly more efficient treatment plan to manage their Crohn’s disease. That’s even true if a patient’s Crohn’s disease is in remission.
With these new guidelines, Crohn’s disease patients in remission would only need their biomarkers to be checked every six to 12 months. Patients with active symptoms would need their biomarkers checked roughly every two to four months.
Biomarker testing can be seen as a useful addition to Crohn’s disease care rather than a full replacement of other forms of care. For example, the new AGA guidelines do not fully omit imaging studies and colonoscopies from treatment. Rather, they are recommended in treatment plans based on the patient’s needs.
In their Gastroenterology paper, the AGA authors wrote, “A biomarker-based monitoring strategy involves routine assessment of symptoms and noninvasive biomarkers of inflammation in patients with CD in symptomatic remission to inform ongoing management. In this situation, normalization of biomarkers is an adequate treatment target—asymptomatic patients with normal biomarkers would continue current management without endoscopy, whereas those with elevated biomarkers would undergo endoscopy.”
Fecal Matter Biomarkers
In speaking with Medical News Today on the benefits of using fecal biomarkers to assess a patient’s disease maintenance, gastroenterologist Jesse Stondell, MD, an Associate Clinical Professor at UC Davis Health, said, “If we start a patient on therapy, they’re not responding appropriately, they’re still having a lot of symptoms, we can check that fecal calprotectin test and get a very quick sense of if things are working or not.
“If the calprotectin is normal, it could be reassuring that there may be other reasons for their symptoms, and that the medicine’s working. But if they have symptoms, and a calprotectin is elevated, that’s a signal that we have to worry the medicine is not working. And that we need to change therapy in that patient,” he added.
“This is a win for Crohn’s disease patients,” Ashwin Ananthakrishnan, MD, a gastroenterologist at Massachusetts General Hospital and co-author of the AGA’s new guidelines, told Medical News Today. “Biomarkers are usually easier to obtain, less invasive, more cost-effective than frequent colonoscopies, and can be assessed more frequently for tighter disease control and better long-term outcomes in Crohn’s disease.”
Clinical laboratories should expect these guidelines to increase demand for the processing of blood or fecal matter biomarker testing. As Crohn’s disease monitoring becomes more dependent on biomarker testing, clinical labs will play a critical role in that process.
Even as the nation’s hospitals embark on efforts to implement effective antimicrobial stewardship programs, researchers continue to seek solutions to the same problem. They are following several paths to combat the growing resistance certain pathogens have to antibiotics. In particular, two approaches are interesting for pathologists and medical laboratory personnel. One involves understanding the processes that lead to antibiotic resistance. The other is to identify useful biomarkers associated with specific strains of pathogens. (more…)
Company says it will offer five diagnostic tests that are useful to the public and some of these tests are among the highest volume tests performed by clinical labs
Heading to market is another device that works with a smartphone to provide consumers with a way to perform five popular medical laboratory tests. The product was developed by Cue, Inc., which describes itself as an entrepreneurial mobile diagnostics developer.
Cue is an at-home lab test device targeted at consumers. It will be priced at about $300, noted a report published by MobiHealthNews.
“We’re very interested in putting the power of the lab into the consumer’s hands in this new way,” said Clint Sever, Cue Cofounder and Chief Product Officer. However, pending Food and Drug Administration (FDA) clearance, Cue’s device is being presold under an “investigational exception” for $199, with promise of delivery in spring 2015.
Cue Allows Consumers to Perform Five Routine Lab Tests at Home
Initially, Cue will perform tests for influenza; testosterone; vitamin D; C-reactive protein (a marker for inflammation); and luteinizing hormone (an indicator of a women’s fertility) But that is just for starters.
According to Ayub Khattak, Cue Cofounder and CEO, the company plans to add more medical lab tests in the future. “The large majority of tests you do in the [clinical] lab today, we want to give you access to in your home,” he declared.
Ayub Khattak (pictured above), Cue Cofounder and CEO, says the Cue device will initially preform five routine tests, but other lab tests will be available in the future, (Photo copyright Cue)
In its blog about Cue, IEE Spectrum noted that the first five clinical laboratory tests the company designed to run on its device were selected because these are the most common tests run by labs and, therefore, are the most useful to the public. Sever and Khattak observed in the MobiHealthNews story that all of these tests—except the influenza test—are used in monitoring a patient’s condition and are done regularly.
Athletes and older men, for instance, want to keep tabs on their testosterone levels. People are interested in Vitamin D because it affects mood. Clinical laboratories perform 70-million Vitamin D yearly, according to Khattak. Inflammation is both a predictor of heart disease and a counter indicator for intense workouts, so if the tests indicated elevated C-reactive protein, a person may want to back off from exercise for a little while, he added. The test for luteinizing hormone tells a woman when she is likely to conceive.
The influenza test, on the other hand, allows parents or other caretakers to check for flu at home, similar to taking a child’s temperature. Sever emphasized that the flu test isn’t meant to replace a doctor visit. “It just gives you more information so you can have an informed conversation with your doctor,” he said.
How the Cue Device Works
The Cue device is about the size of a Rubik’s cube. The test cartridges are about the size of a matchbox. Each cartridge uses blood, saliva, or mucus samples to conduct home lab tests. Each cartridge contains microfluidic channels and the necessary reagents for the test to be performed.
When the cartridge is inserted, Cue prompts the user to collect a sample with the sample wand that is included with the device, explained the IEE Spectrum blog. The testosterone test requires a saliva specimen. The flu test uses a nasal swab, and the other tests require a drop of blood as the specimen.
Once the sample wand is inserted into the cartridge, the reagents combine with the sample inside the cartridge. A sensor then looks for the target molecule, such as testosterone or Vitamin D, and detects the quantity or level. Cue sends this information via Bluetooth to the user’s iPhone or Android smartphone. The smartphone app allows the user to track results over time, and offers suggestions for improving health status. For example, Sever said Cue might recommend specific foods or exercise to boost low testosterone level.
Can Cue Produce More Accurate Tests Than Clinical Laboratories?
Khattak can’t make claims about the accuracy of Cue’s technology because it hasn’t yet been cleared by the FDA, noted the MobiHealthNews story. But the devices inventors believe that Cue tests have the potential to be more accurate than those performed in clinical laboratories, because the human error factor is eliminated.
“What we’ve done is we simplified and automated the whole process,” explained Khattak. “So whereas a lab technician might have 10 steps and they might do 10 of them quite well, those little errors in each of the steps add up. And human error is the largest cause of variation and deviation from standard reproducible results… With us, it is one step. You add the sample, and then you get your results.”
Cue, a modular, Rubik-cube-sized device, uses simple microfluidic laboratory technology to perform five different medical laboratory tests that people routinely have done, including testosterone and vitamin D levels, inflammation, fertility and influenza. The device is being presold under an investigational exception to consumers for $199, with promise of delivery in spring 2015. Once approved by the FDA, the price will be $300. (Photo copyright Cue)
Investors are Successful Tech Entrepreneurs and Diagnostics Experts
Clinical laboratory managers might find it interesting that Cue investors are successful entrepreneurs with expertise in both diagnostics and digital technologies. The investor group includes two University of California, Los Angeles (UCLA) professors, as well as an anonymous private investor, noted MobiHealthNews.
The other founder is Patrick Soon-Shiong, M.D., a former UCLA Medical Professor, who currently serves on the advisory board of UCLA Engineering’s Institute for Technology Advancement. Known as “LA’s billionaire doctor,” Soon-Shiong, a surgeon-turned-entrepreneur, is co-inventor on more than 40 U.S. and foreign patents and has sold two successful businesses for $8.5 billion.
Last year, Soon-Shiong launched Los Angeles-based Nantworks, LLC, a company that aims to revolutionize medicine by adding “Big Data” to patient care. Soon-Shiong also serves as Providence Health & Services’ Director for Cancer Services and Bioinformatics.
Will Consumers Pay for a Device that Does Medical Lab Tests at Home?
Will consumers be willing to pay $199 for a medical laboratory testing device that hooks up to their smartphone or tablet PC? The founders of Cue will find out next year, assuming that FDA clearance is forthcoming and the device reaches the market. Also, will Cue perform medical lab tests with accuracy that is comparable with that of the nation’s best clinical laboratories? There are many pathologists and lab scientists who will be prepared to challenge that statement.
Several key laboratory tests have a prominent place on Oprah Winfrey’s “Ultimate Checklist” for a healthy life. Oprah, long a champion of personal accountability for one’s own health, kicked off the New Year with a focus on health improvement through self-help activities. It is another example of how consumers are being educated about the importance of using laboratory tests as guideposts to improve their health.
With a theme of “Best Life Week”, Oprah featured her medical expert Dr. Oz and his advice on how people can get healthy and peel years off their bodies. Laboratory tests play a prominent role in Dr. Oz’s “Ten Step Ultimate Health Checklist. Under step five, “Know Your Numbers”, Oprah urged her listeners to pay attention to five laboratory tests:
Cholesterol, with LDL less than 100 and HDL greater than 40
Blood sugar
Vitamin D
C-Reactive Protein
Thyroid Stimulating Hormone (TSH)
Also included in the “Know Your Numbers” step were recommendations to check waist size and monitor both blood pressure and heart rate.
Other recommendations in the “Ultimate Health Checklist” were to get a medical check-up; recruiting a health advocate; securing a copy of personal medical records; and getting diagnostic and preventive medical tests and screenings on time.
Oprah’s promotion of Dr. Oz and his recommendations for better improving personal health makes for good ratings. Lab administrators and pathologists should take that as a sign that consumers are interested in healthcare. Another sign of how important television has become as a source of health information is the selection of CNN’s Chief Medical Correspondent, Sanjay Gupta, M.D. to be Surgeon General in the new administration. Expanding media coverage of health and wellness topics plays to the strength of medical laboratories. Media coverage of health issues creates an opportunity for laboratories piggyback on this interest and market directly to consumers. – P. Kirk
