Expanded genomic dataset includes a wider racial diversity which may lead to improved diagnostics and clinical laboratory tests
Human genomic research has taken another important step forward. The National Institutes of Health’s All of Us research program has reached a milestone of 250,000 collected whole genome sequences. This accomplishment could escalate research and development of new diagnostics and therapeutic biomarkers for clinical laboratory tests and prescription drugs.
The NIH’s All of Us program “has significantly expanded its data to now include nearly a quarter million whole genome sequences for broad research use. About 45% of the data was donated by people who self-identify with a racial or ethnic group that has been historically underrepresented in medical research,” the news release noted.
Detailed information on this and future data releases is available at the NIH’s All of us Data Roadmap.
“For years, the lack of diversity in genomic datasets has limited our understanding of human health,” said Andrea Ramirez, MD, Chief Data Officer, All of Us Research Program, in the news release. Clinical laboratories performing genetic testing may look forward to new biomarkers and diagnostics due to the NIH’s newly expanded gene sequencing data set. (Photo copyright: Vanderbilt University.)
Diverse Genomic Data is NIH’s Goal
NIH launched the All of Us genomic sequencing program in 2018. Its aim is to involve more than one million people from across the country and reflect national diversity in its database.
So far, the program has grown to include 413,450 individuals, with 45% of participants self-identifying “with a racial or ethnic group that has been historically under-represented in medical research,” NIH said.
“By engaging participants from diverse backgrounds and sharing a more complete picture of their lives—through genomic, lifestyle, clinical, and social environmental data—All of Us enables researchers to begin to better pinpoint the drivers of disease,” said Andrea Ramirez, MD, Chief Data Officer of the All of Us research program, in the news release.
More than 5,000 researchers are currently registered to use NIH’s All of Us genomic database. The vast resource contains the following data:
245,350 whole genome sequences, which includes “variation at more than one billion locations, about one-third of the entire human genome.”
1,000 long-read genome sequences to enable “a more complete understanding of the human genome.”
Analysis of drugs effectiveness in different patients.
Data Shared with Participants
Participants in the All of Us program, are also receiving personalized health data based on their genetic sequences, which Dark Daily previously covered.
“Through a partnership with participants, researchers, and diverse communities across the country, we are seeing incredible progress towards powering scientific discoveries that can lead to a healthier future for all of us,” said Josh Denny, MD, Chief Executive Officer, All of Us Research Program, in the news release.
“[Researchers] can get access to the tools and the data they need to conduct a project with our resources in as little as two hours once their institutional data use agreement is signed,” said Fornessa Randal, Executive Director, Center for Asian Health Equity, University of Chicago, in a YouTube video about Researcher Workbench.
For diagnostics professionals, the growth of available whole human genome sequences as well as access to participants in the All of Us program is noteworthy.
Also impressive is the better representation of diversity. Such information could result in medical laboratories having an expanded role in precision medicine.
This is good news for clinical laboratories that already perform medical testing for telehealth providers and an opportunity for medical labs that do not, it is an opportunity to do so
Telemedicine visits have become commonplace since the arrival of COVID-19. Before the pandemic, telehealth was primarily used to give remote patients access to quality healthcare providers. But three years later both patients and physicians are becoming increasingly comfortable with virtual office visits, especially among Millennial and Gen Z patients and doctors.
Now, a recent study by the Perelman School of Medicine at the University of Pennsylvania (Penn Medicine) suggests that there could be a significant financial advantage for hospitals that conduct telemedicine. This would be a boon to clinical laboratories that perform medical testing for telemedicine providers.
According to Digital Health News, in July 2017 Penn Medicine launched a 24/7/365 copayment-free telemedicine program for its employees called Penn Medicine OnDemand. To engage with a telemedicine provider, patients must have a smartphone or tablet with a front-facing camera and updated operating system.
Telemedicine Visits Cost Less than In-Office Doctor Appointments
An analysis of the OnDemand program’s data collected from its inception through the end of 2019 found that the telemedicine appointment per-visit cost averaged around $380, whereas the cost of an in-person visit at an emergency department, primary care office, or urgent care clinic averaged around $493.
Typically, Penn Medicine’s employees used the telemedicine program for common, low risk health complaints. Healthcare conditions that many patients might otherwise not seek treatment for if an in-office visit was inconvenient.
“The data we analyzed pre-date the pandemic. It was a time when people were just putting a toe in the water and wondering, ‘Let me see if telemedicine could treat my needs,’” Krisda Chaiyachati MD, an internal medicine physician and Adjunct Assistant Professor at Penn Medicine, told Digital Health News. Chaiyachati lead the research team that conducted the telemedicine study.
“These days, people seem willing to jump in for an appropriate set of conditions,” he added. “The good news is that we made care easier while saving money, and we think the savings could be higher in the future.”
Chaiyachati and his colleagues found that telemedicine can save employers healthcare costs without sacrificing quality of care.
“The conditions most often handled by OnDemand are low acuity—non-urgent or semi-urgent issues like respiratory infections, sinus infections, and allergies—but incredibly common, so any kind of cost reduction can make a huge difference for controlling employee benefit costs,” Krisda Chaiyachati MD (above), a Penn Medicine physician and the study’s lead researcher, told Digital Health News. Clinical laboratories that already perform testing for telemedicine providers may see an increase in test orders once hospitals learn of the costs savings highlighted in the Penn Medicine study. (Photo copyright: Penn Medicine.)
Telemedicine on the Rise
The idea is not new. In late 2018, Planned Parenthood launched the Planned Parenthood Direct mobile app in New York State. The app provides New York patients with access to birth control, emergency contraception, and UTI treatment with no in-person visit required.
The program has since expanded across the country. Users of the app can connect with a physician to go over symptoms/needs, and the be sent a prescription within a business day to the pharmacy of their choice.
The concept is similar to Penn Medicine OnDemand, which gives patients 24/7 year around access to treatment for common and low-acuity medical issues in a convenient, virtual process.
Telemedicine was on the rise in other parts of the healthcare industry before the pandemic. According to “The State of Telehealth Before and After the COVID-19 Pandemic” published by Julia Shaver, MD, Kaiser Permanente, in the journal Primary Care: Clinics in Office Practice, 76% of US hospital systems had utilized some form of telemedicine by 2018. This rate grew exponentially while the healthcare system had to navigate a world with COVID-19 on the rise.
And, apparently, quality of care does not suffer when moved from in-person to virtual settings. Two studies conducted by The University of Rochester Medical Center (URMC) found telemedicine to be effective and that “common concerns about telemedicine don’t hold up to scrutiny,” according a news release.
In her New England Journal of Medicine (NEJM) paper on the studies, Kathleen Fear, PhD, URMC’s Director of Data Analytics, Health Lab, and her co-authors, wrote: “Three beliefs—that telemedicine will reduce access for the most vulnerable patients; that reimbursement parity will encourage overuse of telemedicine; and that telemedicine is an ineffective way to care for patients—have for years formed the backbone of opposition to the widespread adoption of telemedicine.”
However, URMC’s study found the opposite to be true. The NEJM authors wrote, “there is no support for these three common notions about telemedicine. At URMC, the most vulnerable patients had the highest uptake of telemedicine; not only did they complete a disproportionate share of telemedicine visits, but they also did so with lower no-show and cancellation rates. It is clear that … telemedicine makes medical care more accessible to patients who previously have experienced substantial barriers to care.
“Importantly, this access does not come at the expense of effectiveness. Providers do not order excessive amounts of additional testing to make up for the limitations of virtual visits. Patients do not end up in the ER or the hospital because their needs are not met during a telemedicine visit, and they also do not end up requiring additional in-person follow-up visits to supplement their telemedicine visit,” the NEJM authors concluded.
“Not only did our most vulnerable patients not get left behind—they were among those engaging the most with, and benefiting the most from, telemedicine services. We did not see worse outcomes or increased costs, or patients needing an increased amount of in-person follow up. Nor did we find evidence of overuse. This is good care, and it is equitable care for vulnerable populations,” Fear said in the news release.
“For patients, the message is clear and reassuring: Telemedicine is an effective and efficient way of receiving many kinds of healthcare,” she added.
Opportunities for Clinical Laboratories
Dark Daily has covered the fast growing world of telemedicine in many ebriefs over the years.
As telemedicine broadens its reach across the healthcare world, clinical laboratories and pathology groups would be wise to seek collaboration with health plans and providers of telemedicine to figure out where sample collection and testing fits into this new virtual healthcare space.
This is another approach to the liquid biopsy that clinical laboratories and pathologists may use to detect cancer less invasively
Screening for cancer usually involves invasive, often painful, costly biopsies to provide samples for diagnostic clinical laboratory testing. But now, scientists at the University of Technology (UTS) in Sydney, Australia, have developed a novel approach to identifying tumorous cells in the bloodstream that uses imaging to cause cells with elevated lactase to fluoresce, according to a UTS news release.
The UTS researchers created a Static Droplet Microfluidic (SDM) device that detects circulating tumor cells (CTC) that have separated from the cancer source and entered the bloodstream. The isolation of CTCs is an intrinsic principle behind liquid biopsies, and microfluidic gadgets can improve the efficiency in which problematic cells are captured.
The University of Technology’s new SDM device could lead the way for very early detection of cancers and help medical professionals monitor and treat cancers.
“Managing cancer through the assessment of tumor cells in blood samples is far less invasive than taking tissue biopsies. It allows doctors to do repeat tests and monitor a patient’s response to treatment,” explained Majid E. Warkiani, PhD, Professor, School of Biomedical Engineering, UTS, and one of the authors of the study, in a news release. Clinical laboratories and pathologists may soon have a new liquid biopsy approach to detecting cancers. (Photo copyright: University of New South Wales.)
Precision Medicine a Goal of UTS Research
The University of Technology’s new SDM device differentiates tumor cells from normal cells using a unique metabolic signature of cancer that involves the waste product lactate.
“A single tumor cell can exist among billions of blood cells in just one milliliter of blood, making it very difficult to find,” explained Majid E. Warkiani, PhD, a professor in the School of Biomedical Engineering at UTS and one of the authors of the study, in the news release.
“The new [SDM] detection technology has 38,400 chambers capable of isolating and classifying the number of metabolically active tumor cells,” he added.
“In the 1920s, Otto Warburg discovered that cancer cells consume a lot of glucose and so produce more lactate. Our device monitors single cells for increased lactate using pH sensitive fluorescent dyes that detect acidification around cells,” Warkiani noted.
After the SDM device has detected the presence of questionable cells, those cells undergo further genetic testing and molecular analysis to determine the source of the cancer. Because circulating tumor cells are a precursor of metastasis, the device’s ability to identify CTCs in very small quantities can aid in the diagnosis and classification of the cancer and the establishment of personalized treatment plans, a key goal of precision medicine.
The new technology was also designed to be operated easily by medical personnel without the need for high-end equipment and tedious, lengthy training sessions. This feature should allow for easier integration into medical research, clinical laboratory diagnostics, and enable physicians to monitor cancer patients in a functional and inexpensive manner, according to the published study.
“Managing cancer through the assessment of tumor cells in blood samples is far less invasive than taking tissue biopsies. It allows doctors to do repeat tests and monitor a patient’s response to treatment,” stated Warkiani in the press release.
The team have filed for a provisional patent for the device and plan on releasing it commercially in the future.
Other Breakthroughs in MCED Testing
Scientists around the world have been working to develop a simple blood test for diagnosing cancer and creating optimal treatment protocols for a long time. There have been some notable breakthroughs in the advancement of multi-cancer early detection (MCED) tests, which Dark Daily has covered in prior ebriefings.
According to the Centers for Disease Control and Prevention (CDC), cancer ranks second in the leading causes of death in the US, just behind heart disease. There were 1,603,844 new cancer cases reported in 2020, and 602,347 people died of various cancers that year in the US.
According to the National Cancer Institute, the most common cancers diagnosed in the US annually include:
Cancer is a force in Australia as well. It’s estimated that 151,000 Australians were diagnosed with cancer in 2021, and that nearly one in two Australians will receive a diagnosis of the illness by the age of 85, according to Cancer Council South Australia.
The population of Australia in 2021 was 25.69 million, compared to the US in the same year at 331.9 million.
The development of the University of Technology’s static droplet microfluidic device is another approach in the use of liquid biopsies as a means to detect cancer less invasively.
More research and clinical studies are needed before the device can be ready for clinical use by anatomic pathology groups and medical laboratories, but its creation may lead to faster diagnosis of cancers, especially in the early stages, which could lead to improved patient outcomes.
Demand for low cost, convenient access to doctors and drugs is driving transformation to decentralized medical care, and retail pharmacy chains see opportunity in offering primary care services
Retail pharmacies and pharmacists continue to play a growing role in healthcare as consumer demand for lower cost and convenience pushes the nation’s medical landscape away from centralized healthcare systems. Clinical laboratories have seen this in the increasing trend of consumers seeking vaccinations and home-health tests at their local drug stores.
Results of a pair of surveys dubbed “Pharmacy Next” conducted by Wolters Kluwer Health revealed that 58% of people are now willing to be treated for non-emergency healthcare conditions in non-traditional medical environments, such as retail pharmacies and clinics.
This is a finding that clinical laboratory managers and pathologists should incorporate into their labs’ strategic planning. It portends a shift in care away from the traditional primary care clinic—typically located in the campus around the community hospital—and toward retail pharmacies. Labs will want to capture the test referrals originating from the primary care clinics located in retail pharmacies.
This willingness to access medical care in non-traditional environments is especially true among people in Generation Y (Millennials) and Generation Z (Zoomers)—people born between 1981-1996 (Gen Y) and 1997-2012 (Gen Z), according to Journey Matters.
“As we saw in last year’s survey, primary care decentralization is continuing—the traditional one doctor-one patient, single point of coordination is vanishing, and this is especially evident in younger generations,” said Peter Bonis, MD, Wolters Kluwer’s Chief Medical Officer, in a press release.
The online surveys of more than 2,000 US adults was weighted by age, gender, household income, and education to be representative of the entire population of the United States.
“By preparing for this shift today, providers can work in concert across care sites to deliver the best care to patients,” said Peter Bonis, MD, Wolters Kluwer Health Chief Medical Officer, in a press release. “Likewise, newer care delivery models, like retail pharmacies and clinics, can ensure they’re ready to meet the expectations of healthcare consumers, who will increasingly be turning to them for a growing range of care needs.” Clinical laboratories may find new revenue opportunities working with the primary care clinics operating within local retail pharmacists and clinicians. (Photo copyright: Wolters Kluwer.)
Key Findings of the Wolters Kluwer Pharmacy Next Studies
Some key insights of the surveys include:
Care is rapidly decentralizing with 58% stating they are likely to visit a local pharmacy for non-emergency medical care.
Younger generations are signaling lasting change within the industry as they are more open to non-traditional styles of care.
61% of respondents envision most primary care services being provided at pharmacies, retail clinics, or pharmacy clinics within the next five years. Of the respondents, 70% of Millennials, 66% of Gen Z, 65% of Gen X, and 43% of Baby Boomers believe this transition will occur.
Consumers are worried about prescription costs and availability.
92% of respondents said physicians and pharmacists should inform patients of generic options.
59% of surveyed consumers have concerns about drug tampering and theft when it involves mail order or subscription prescription services.
One in three respondents believe convenience is more important than credentials in non-emergency situations.
The survey indicates that healthcare consumers across multiple generations are open to a shift in some medical services from doctors to pharmacists. However, there were some notable differences between generations.
Respondents of the Baby Boomer (55%) and Gen X (57%) generations stated they would trust a physician assistant with medication prescriptions, while only 42% of Gen Z and 47% of Millennial respondents felt the same way.
Additionally, Boomers (57%) and Gen X (67%) said they would feel comfortable with a nurse practitioner issuing their prescriptions, while only 44% of Gen Z and 53% of Millennials said they would.
Increased Comfort with Genetic Testing at Pharmacies
The surveys also showed that younger generations are more open to the field of pharmacogenomics, which combines pharmacology and genomics to analyze how an individual’s genetic makeup (aka, heredity) affects the efficacy and reactions to certain drugs. This is a key component of precision medicine.
Overall, 68% of individuals polled believe their individual genomic data could guide prescription decisions, with Millennials (77%) and Gen Z (74%) being the primary believers. Additionally, 88% of respondents stated they see an incentive for health insurers to cover genomic testing, and 72% said they would be open to genetic testing for personalized medical care.
But pharmacists and clinicians should be aware that advancing pharmacogenomics will require addressing privacy concerns. According to the Wolters Kluwer study, 57% of Gen Z and 53% of Millennials have apprehension surrounding genetic testing due to privacy risks, with 35% of Gen X and Boomers holding that same opinion.
Healthcare Staff Shortages, Drug Cost a Concern
Survey respondents are also concerned about pharmacy staff shortages and expenditures when seeking care at a pharmacy. Half of the participants are worried they will receive the wrong medication, half worry about getting the incorrect dosage, and almost half (47%) fear receiving the wrong directions due to overburdened pharmacy employees.
More people in Gen Z (59%) and Millennials (60%) had these concerns compared to Gen X (44%) and Boomers (38%).
Sadly, a distressing 44% of those surveyed admitted to not filling a prescription due to the costs. That number jumps to a staggering 56% among individuals with no health insurance, compared to 42% for insured patients.
“From hospitals to doctors’ offices, from pharmacies to pharma and beyond, healthcare must move to more affordable and accessible primary care models, adopt innovations that help deliver more personalized care, and address persistent safety and cost concerns that consumers have about their medications,” said Bonis in the press release.
Can Pharmacies Deliver Primary Care as Well as Doctor’s Offices?
Pharmacies may be logical setting for at least some non-emergency health services. According to the Centers for Disease Control and Prevention (CDC), approximately 90% of the US population live within five miles of a pharmacy and about 72% of visits to physician’s offices involve the prescribing and monitoring of medication therapies.
“We’re not talking about complicated services. We’re talking low-acuity, very basic care,” said Anita Patel, PharmD, Vice President of Pharmacy Services Development for Walgreens, at the HIMSS conference.
Pharmacies across the country continue to add more healthcare services to their available public offerings. This trend will likely persist into the future as healthcare becomes more expensive, wait times for physician appointments increases, and medical staff shortages rise. Thus, there may be opportunities for clinical laboratories to support pharmacists and doctors working in retail settings.
Meet ‘PECOTEX,’ a newly-invented cotton thread with up to 10 sensors that is washable. Its developers hope it can help doctors diagnosis disease and enable patients to monitor their health conditions
Wearable biosensors continue to be an exciting area of research and product development. The latest development in wearable biosensors comes from a team of scientists led by Imperial College London. This team created a conductive cotton thread that can be woven onto T-shirts, textiles, and face masks and used to monitor key biosignatures like heart rate, respiratory rate, and ammonia levels.
Clinical laboratory managers and pathologists should also take note that this wearable technology also can be used to diagnose and track diseases and improve the monitoring of sleep, exercise, and stress, according to an Imperial College London news release.
Should this technology make it into daily use, it might be an opportunity for clinical laboratories to collect diagnostic and health-monitoring data to add to the patient’s full record of lab test results. In turn, clinical pathologists could use that data to add value when consulting with referring physicians and their patients.
“Our research opens up exciting possibilities for wearable sensors in everyday clothing,” said Firat Güder, PhD, Principal Investigator and Chief Engineer at Güder Research Group at Imperial College London, in a news release. “By monitoring breathing, heart rate, and gases, they can already be seamlessly integrated, and might even be able to help diagnose and monitor treatments of disease in the future.” (Photo copyright: Wikipedia.)
Ushering in New Generation of Wearable Health Sensors
The researchers dubbed their new sensor thread PECOTEX. It’s a polystyrene sulfonate-modified cotton conductive thread that can incorporate more than 10 sensors into cloth surfaces, costs a mere 15 cents/meter (slightly over 39 inches), and is machine washable.
“PECOTEX is high-performing, strong, and adaptable to different needs,” stated Firat Güder, PhD, Principal Investigator and Chief Engineer at Güder Research Group, Imperial College London, in the press release.
“It’s readily scalable, meaning we can produce large volumes inexpensively using both domestic and industrial computerized embroidery machines,” he added.
The material is less breakable and more conductive than conventional conductive threads, which allows for more layers to be embroidered on top of each other to develop more complex sensors. The embroidered sensors retain the intrinsic values of the cloth items, such as wearability, breathability, and the feel on the skin. PECOTEX is also compatible with computerized embroidery machines used in the textile industry.
The researchers embroidered the sensors into T-shirts to track heart activity, into a face mask to monitor breathing, and into other textiles to monitor gases in the body like ammonia which could help detect issues with liver and kidney function, according to the news release.
“The flexible medium of clothing means our sensors have a wide range of applications,” said Fahad Alshabouna, a PhD candidate at Imperial College’s Department of Bioengineering and lead author of the study in the news release. “They’re also relatively easy to produce which means we could scale up manufacturing and usher in a new generation of wearables in clothing.”
Uses for PECOTEX Outside of Healthcare
The team plans on exploring new applications for PECOTEX, such as energy storage, energy harvesting, and biochemical testing for personalized medicine. They are also seeking partners for commercialization of the product.
“We demonstrated applications in monitoring cardiac activity and breathing, and sensing gases,” Fahad added. “Future potential applications include diagnosing and monitoring disease and treatment, monitoring the body during exercise, sleep, and stress, and use in batteries, heaters, and anti-static clothing.”
Wearable healthcare devices have enormous potential to perform monitoring for diagnostic, therapeutic, and rehabilitation purposes and support precision medicine.
Further studies and clinical trials need to occur before PECOTEX will be ready for mass consumer use. Nevertheless, it could lead to new categories of inexpensive, wearable sensors that can be integrated into everyday clothes to provide data about an individual’s health and wellbeing.
If this technology makes it to clinical use, it could provide an opportunity for clinical laboratories to collect diagnostic data for patient records and help healthcare professionals track their patients’ medical conditions.
Though a ‘work in progress,’ the Oxford researchers who conducted the trail believe the MCED blood test could help doctors give better cancer assessments
Cancer is typically diagnosed through tissue biopsies that are often invasive and painful for patients. Now, recently-released results of a National Health Service (NHS) trial study of a relatively new multi-cancer early detection test (MCED) may provide a less painful/invasive cancer test experience to UK residents.
Developed by California-based healthcare technology company Grail, the clinical laboratory blood test—called Galleri—can detect 50 cancer types and, according to the company’s website, even identify the cancer’s location within the body. It is currently only available through a doctor’s prescription.
Researchers have long sought to improve screening methods and diagnostic technologies that identify cancers more easily and at an earlier stage. They recognize that a simple, inexpensive laboratory blood test—as opposed to a tissue biopsy—that detects both the presence of multiple cancer types and its location would benefit both medical professionals and patients worldwide.
“The [Galleri] test was 85% accurate in detecting the source of the cancer, and that can be really helpful because so many times it is not immediately obvious when you have got the patient in front of you what test is needed to see whether their symptoms are down to cancer,” said Mark Middleton, MD, PhD, head of the Department of Oncology at the University of Oxford and lead researcher of the study, in a BBC interview. (Photo copyright: University of Oxford.)
Details of the SYMPLIFY Study
To conduct the SYMPLIFY study, Oxford researchers enrolled 6,238 adults in England and Wales who were referred for imaging and diagnostic testing with symptoms that were indicative of gynecological, lung, or lower/upper GI cancers, or with non-specific symptoms. The most commonly reported symptoms that triggered the referrals were:
DNA from cancer cells—called ctDNA (circulating tumor DNA)—can be detected in blood samples at early tumor stages. The Galleri MCED test was performed on cell-free DNA taken from blood samples provided by the study participants. The test was performed in batches and blinded to results of previous diagnostic tests.
The predictions of the test were then compared to diagnoses received via traditional diagnostic testing and imaging.
According to the Oxford researchers’ Lancet paper, GRAIL’s MCED test detected a cancer signal in 323 of the study participants. Of those individuals, 244 received a cancer diagnosis, resulting in a positive predictive value (PPV) of 75.5%, a negative predictive value (NPV) of 97.6%, and a specificity of 98.4%.
The overall sensitivity of the Galleri test was 66.3%, representing a range from 24.2% in Stage 1 cancers to 95.3% in stage IV cancers. The mean age of the study participants was 62.1 years old, and the sensitivity increased with age and cancer stage.
The overall accuracy of the top Cancer Signal Origin (CSO) prediction following a positive MCED test was 85.2%, the researchers concluded.
“With that prediction from the test, we can decide whether to order a scope or a scan and make sure we are giving the right test the first time,” Mark Middleton, MD, PhD, head of the Department of Oncology at the University of Oxford and lead researcher of the study, told BBC News.
The most common cancers detected among the study participants were:
“Earlier cancer detection and subsequent intervention has the potential to greatly improve patient outcomes. Most patients diagnosed with cancer first see a primary care physician for the investigation of symptoms suggestive of cancer, like weight loss, anemia, or abdominal pain, which can be complex as there are multiple potential causes,” said Brian Nicholson, DPhil, Associate Professor at Oxford’s Nuffield Department of Primary Care Health Sciences and co-lead investigator for the study in a 2023 Oxford press release. “New tools that can both expedite cancer diagnosis and potentially avoid invasive and costly investigations are needed to more accurately triage patients who present with non-specific cancer symptoms.
“The high overall specificity, positive predictive value, and accuracy of the cancer signal detected and cancer signal origin prediction that was reported across cancer types in the SYMPLIFY study indicate that a positive MCED test could be used to confirm that symptomatic patients should be evaluated for cancer before pursuing other diagnoses,” he added.
MCED Test May Help Doctors Better Assess Cancer
The SYMPLIFY study is the first large-scale analysis of an MCED test in patients who were referred by their doctors for diagnostic testing due to suspected cancers. The results of the study were presented at the annual meeting of the American Society of Clinical Oncology (ASCO) in June.
Middleton told BBC News that the test is not yet accurate enough to “rule in or rule out cancer,” but it was useful for researchers and patients.
“The findings from the study suggest this test could be used to support GPs to make clinical assessments but much more research is needed, in a larger trial, to see if it could improve GP assessment and ultimately patient outcomes,” David Crosby, PhD, head of Prevention and Early Detection Research, Cancer Research, UK, told BBC News.
Clinical laboratories and anatomic pathology groups that perform tissue biopsy testing for oncologists will want to monitor the progress of this simple blood test that may someday reduce the number of invasive, painful biopsies required to diagnose cancer and other health considerations.
