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Clinical Laboratories and Pathology Groups

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UCLA Spinoff Develops AI Tool That Improves Accuracy of Prostate Cancer Assessments

Software analyzes imaging scans and clinical laboratory data to help oncologists and anatomic pathologists visualize a tumor’s extent

Anatomic pathologists understand that, along with breast cancer, diagnostic testing for prostate cancer accounts for a high volume of clinical laboratory tests. Thus, a recent study indicating that a new artificial intelligence (AI)-based software tool can dramatically improve physicians’ ability to identify the extent of these cancers will be of interest.

The software, known as Unfold AI, was developed by Avenda Health, a University of California Los Angeles (UCLA) spinoff company. Unfold AI, according to Avenda, predicts focal therapy success by an increase of 77% over standard methods.

“The study found that Unfold AI’s patient-specific encapsulation confidence score (ECS), which is generated based on multiple patient data points, including MRI scans, biopsy results, PSA [prostate-specific antigen] data, and Gleason scores, is critical for predicting treatment success,” an Avenda press release states. “These findings emphasize the importance of Unfold AI’s assessment of tumor margins in predicting treatment outcomes, surpassing the predictive capability of conventional parameters.”

“Unfold AI’s ability to identify tumor margins and provide the ECS will improve treatment recommendations and allow for less-invasive interventions,” said study co-author Wayne Brisbane, MD, a urologic oncologist and UCLA medical professor, in another press release. “This more comprehensive approach enhances our ability to predict treatment outcomes and tailor interventions effectively to individual patient needs.”

The UCLA researchers published their findings titled, “Artificial Intelligence Improves the Ability of Physicians to Identify Prostate Cancer Extent,” in The Journal of Urology. Results were also presented at the 2024 American Urological Association annual meeting.

“This study is important because it shows the ability of AI to not only replicate expert physicians, but to go beyond human ability,” said study co-author Wayne Brisbane, MD (above), a urologic oncologist and UCLA medical professor, in a press release. “By increasing the accuracy of cancer identification in the prostate, more precise and effective treatment methods can be prescribed for patients.” Clinical laboratories that work with anatomic pathologists to diagnose prostate and other cancers may soon have a new AI testing tool. (Photo copyright: UCLA.)

How Unfold AI Works

To gauge the extent of prostate tumors, surgeons typically evaluate results from multiple diagnostic methods such as PSA tests and imaging scans such as MRIs, according to a UCLA press release. However some portions of a tumor may be invisible to an MRI, causing doctors to underestimate the size.

Unfold AI, originally known as iQuest, was designed to analyze data from PSA, MRI, fusion biopsy, and pathology testing, according to a company brochure. From there, it generates a 3D map of the cancer. Avenda’s website says the technology provides a more accurate representation of the tumor’s extent than conventional methods.

“Accurately determining the extent of prostate cancer is crucial for treatment planning, as different stages may require different approaches such as active surveillance, surgery, focal therapy, radiation therapy, hormone therapy, chemotherapy, or a combination of these treatments,” Brisbane said in the UCLA press release.

Putting AI to the Test

In the new study, the UCLA researchers enlisted seven urologists and three radiologists to review 50 prostate cancer cases. Each patient had undergone prostatectomy—surgical removal of all or part of the prostate—but might have been eligible for focal therapy, a less-aggressive approach that uses heat, cryotherapy, or electric shocks to attack cancer cells more selectively.

The physicians came from five hospitals and had a wide range of clinical experience from two to 23 years, the researchers noted in The Journal of Urology.

They reviewed clinical data and examined MRI scans of each patient, then “manually drew outlines around the suspected cancerous areas, aiming to encapsulate all significant disease,” the press release states. “Then, after waiting for at least four weeks, they reexamined the same cases, this time using AI software to assist them in identifying the cancerous areas.”

The researchers analyzed the physicians’ work, evaluating the accuracy of the cancer margins and the “negative margin rate,” indicating whether the clinicians had identified all of the cancerous tissue. Using conventional approaches, “doctors only achieved a negative margin 1.6% of the time,” the press release states. “When assisted by AI the number increased to 72.8%.”

The clinicians’ accuracy was 84.7% when assisted by AI versus 67.2% to 75.9% for conventional techniques.

They also found that clinicians who used the AI software were more likely to recommend focal therapy over more aggressive forms of treatment.

“We saw the use of AI assistance made doctors both more accurate and more consistent, meaning doctors tended to agree more when using AI assistance,” said Avenda Health co-founder and CEO Shyam Natarajan, PhD, who was senior author of the study.

“These results demonstrate a marked change in how physicians will be able to diagnose and recommend treatment for prostate cancer patients,” said Natarajan in a company press release. “By increasing the confidence in which we can predict a tumor’s margins, patients and their doctors will have increased certainty that their entire tumor is treated and with the appropriate intervention in correlation to the severity of their case.”

Already Cleared by FDA

Avenda received FDA 510(k) clearance for Unfold AI in November 2022. On July 1, 2024, the American Medical Association (AMA) implemented a CPT [Current Procedural Terminology] Category III code for the software, enabling insurance reimbursement for services that employ the technology, the company said in a press release.

The AMA describes CPT Category III as “a temporary set of codes for emerging technologies, services, procedures, and service paradigms.”

In the same press release, Avenda revealed that the federal Centers for Medicare and Medicaid Services (CMS) had assigned a national payment rate for Unfold AI.

UCLA’s study found that AI can outperform doctors both in sensitivity (a higher detection rate of positive cancers) and specificity (correctly detecting the sample as negative). That’s relevant and worth watching for further developments.

Pathologists and clinical laboratory managers should consider this use of AI as one more example of how artificial intelligence can be incorporated into diagnostic tests in ways that allow medical laboratory professionals to diagnose disease earlier and more accurately. This will improve patient care because early intervention for most diseases leads to better outcomes.

—Stephen Beale

Related Information:

New Study Proves AI Enhances Physicians’ Ability to Identify Prostate Cancer Extent with 84 Percent Accuracy

New Study Demonstrates Avenda Health’s Unfold AI to Better Predict Focal Therapy Success by 77% as Compared to Standard Methods

AI Model May Yield Better Outcomes for Prostate Cancer

Artificial Intelligence Improves the Ability of Physicians to Identify Prostate Cancer Extent

Artificial Intelligence Detects Cancer with 25% Greater Accuracy than Doctors in UCLA Study

Study Finds Unfold AI Better Predicts Focal Therapy Success in Prostate Cancer Patients

First AI-Powered Precision Oncology Platform for Prostate Cancer Care, iQuest Receives FDA Clearance

American Associated Pharmacies Struck by Ransomware Attack

Clinical laboratories and anatomic pathology groups should consider these cyberattacks on major healthcare entities as reminders that they should tighten their cybersecurity protections

Hackers continue to gain access to public health records—including clinical laboratory testing data—putting thousands of patients’ protected health information (PHI) at risk of being exposed. The latest important healthcare entity to become the victim of a ransomware attack is American Associated Pharmacies (AAP). According to The Register, AAP announced a ransomware operation called Embargo had stolen over 1.4 terabytes (TB) of data, encrypted those files, and demanded $1.3 million to decrypt the data.

Embargo claims that Scottsboro, Ala.-based AAP paid $1.3 million to have its systems restored. They are now demanding an additional $1.3 million to keep the stolen data private, the HIPAA Journal reported, adding, “The attack follows ransomware attacks on Memorial Hospital and Manor, an 80-bed community hospital and 107 long-term care facility in Georgia, and Weiser Memorial Hospital, a critical access hospital in Idaho.”

AAP has not publicly confirmed the ransomware attack, nor has it made an official statement regarding the breach. But it did post an “Important Notice” on its website reporting, “limited ordering capabilities for API Warehouse have been restored at APIRx.com.”

API Warehouse is a subsidiary of AAP that helps subscribers save on brand name and generic prescriptions via wholesale purchasing plans. It oversees more than 2,000 independent pharmacies across the US and has over 2,500 stock keeping units (SKUs) in its inventory.

The message further states “All user passwords associated with both APIRx.com and RxAAP.com have been reset, so existing credentials will no longer be valid to access the sites. Please click ‘forgot password’ on the log in screen and follow the prompts accordingly to reset your password.”

“Embargo seems to have international and multi-sector victims and is not focusing on a specific victim profile. They seem opportunistic,” Mike Hamilton (above), founder and chief information security officer (CISO) of cybersecurity firm Critical Insight, told HealthcareInfoSecurity. “However, as they do have multiple victims in healthcare, and their tooling to disable detection is sophisticated, they should not be discounted. If indeed they operate through affiliates, we can expect others to use their infrastructure and tools, and Embargo may emerge as a top threat to healthcare.” Since 80% of all medical records are made up of clinical laboratory testing data, laboratory patients are particularly vulnerable. (Photo copyright: Critical Insight.)

Embargo on the Hunt for PHI

Due to the large amount of data Embargo stole from the AAP servers, it’s likely the hackers were able to procure medical records and account details from all customers of the pharmacies involved in the attack. 

Researchers at ESET, an internet security company, first noticed the ransomware organization known as Embargo in June of this year. In a news release, ESET stated that Embargo used an endpoint detection and response (EDR) killer toolkit to steal AAP’s data. 

“Based on its modus operandi, Embargo seems to be a well-resourced group. It sets up its own infrastructure to communicate with victims. Moreover, the group pressures victims into paying by using double extortion: the operators exfiltrate victims’ sensitive data and threaten to publish it on a leak site, in addition to encrypting it,” ESET wrote in a news release.

Embargo recently attacked other organizations within the healthcare industry as well. In November, it claimed responsibility for breaching the security of Memorial Hospital and Manor in Bainbridge, Ga. The cyberattack affected Memorial’s email and electronic medical record (EHR) systems, which caused the facility to pivot to a paper-based system, The Cyber Express reported. 

Embargo’s attack on Weiser Memorial Hospital in Weiser, Idaho, involved the theft of approximately 200 gigabytes (GB) of sensitive data and caused a four-week-long outage of its computer systems.  

Other Cyberattacks on Healthcare Organizations

Dark Daily has covered many cyberattacks on hospital health systems in multiple ebriefs over the past few years.

In “Cyberattack Renders Healthcare Providers across Ascension’s Hospital Network Unable to Access Medical Records Endangering Patients,” we summarized how Ascension’s inability to access medical records during the attack caused major disruptions to patient healthcare. It took more than a month for Ascension’s electronic health record system to be fully restored.

In “Change Healthcare Cyberattack Disrupts Pharmacy Order Processing for Healthcare Providers Nationwide,” Dark Daily outlined how a February cyberattack on Change Healthcare caused its parent organization UnitedHealth Group to file a Material Cybersecurity Incidents Report (form 8-K) with the US Securities and Exchange Commission (SEC) in which it stated it had “identified a suspected nation-state associated cybersecurity threat actor [that] had gained access to some of the Change Healthcare information technology systems.”

A few days later the real identity of the threat actor was revealed to be a ransomware group known as BlackCat (aka, ALPHV), according to Reuters.

And in, “Continued Cyberattacks on Hospitals, Clinical Laboratories, and Other Providers Cause Closures as Hackers Grow in Sophistication,” we reported how hospitals of all sizes continue to be prime targets for sophisticated cyberattacks, where hackers remotely disable a healthcare network’s computer systems—including its clinical laboratory information system (LIS)—and extort ransomware payments.

Safeguarding patient data is critical, and more healthcare organizations are discovering the hard way that they are vulnerable to hackers. This situation serves as another reminder to clinical laboratory and pathology group managers that they need to be proactive and serious about protecting their information systems, and in upgrading their digital security at regular intervals.

Hackers are working hard to obtain access to protected health information, which puts patients at continuous risk of having their private records stolen.

—JP Schlingman

Related Information:

Ransomware Fiends Boast They’ve Stolen 1.4TB from US Pharmacy Network

Another Major US Healthcare Organization Has Been Hacked, with Potentially Major Consequences

Gang Shaking Down Pharmacy Group for Second Ransom Payment

US Pharmacy Network Loses 1.4 Terabytes of Data to Boasting Hackers

New Ransomware Group Embargo Uses Toolkit That Disables Security Solutions, ESET Research Discovers

Embargo Ransomware Group Claims Attack on American Associated Pharmacies

American Associated Pharmacies Resets All User Passwords after Ransomware Gang Claims Responsibility for Cyberattack

Ransomware Attack Disrupts Memorial Hospital’s EHR System, Temporarily Slows Operations

Weiser Memorial Hospital Investigating Cyberattack

Hospital Deals with IT Outage for 4 Weeks

Healthcare Cyberattacks at Two Hospitals Prompt Tough Decisions as Their Clinical Laboratories Are Forced to Switch to Paper Documentation

Three Federal Agencies Warn Healthcare Providers of Pending Ransomware Attacks; Clinical Laboratories Advised to Assess Their Cyberdefenses

Mayo Clinic Researchers Uses Exome Sequencing to Identify Individuals at Risk of Hereditary Cancer

Half of the people tested were unaware of their genetic risk for contracting the disease

Existing clinical laboratory genetic screening guidelines may be inadequate when it comes to finding people at risk of hereditary breast-ovarian cancer syndromes and Lynch syndrome (aka, hereditary nonpolyposis colorectal cancer). That’s according to a study conducted at the Mayo Clinic in Rochester, Minn., which found that about half of the study participants were unaware of their genetic predisposition to the diseases.

Mayo found that 550 people who participated in the study (1.24%) were “carriers of the hereditary mutations.” The researchers also determined that half of those people were unaware they had a genetic risk of cancer, and 40% did not meet genetic testing guidelines, according to a Mayo Clinic news story.

The discoveries were made following exome sequencing, which the Mayo Clinic news story described as the “protein-coding regions of genes” and the sites for most disease-causing mutations.

“Early detection of genetic markers for these conditions can lead to proactive screenings and targeted therapies, potentially saving lives of people and their family members,” said lead author Niloy Jewel Samadder, MD, gastroenterologist and cancer geneticist at Mayo Clinic’s Center for Individualized Medicine and Comprehensive Cancer Center.

The Mayo researchers published their findings in the journal JCO Precision Oncology titled, “Exome Sequencing Identifies Carriers of the Autosomal Dominant Cancer Predisposition Disorders Beyond Current Practice Guideline Recommendations.”

“This study is a wake-up call, showing us that current national guidelines for genetic screenings are missing too many people at high risk of cancer,” said lead author Niloy Jewel Samadder, MD (above), gastroenterologist and cancer geneticist at Mayo Clinic’s Center for Individualized Medicine and Comprehensive Cancer Center. New screening guidelines may increase the role of clinical laboratories in helping physicians identify patients at risk of certain hereditary cancers. (Photo copyright: Mayo Clinic.)

Advancing Personalized Medicine

“The goals of this study were to determine whether germline genetic screening using exome sequencing could be used to efficiently identify carriers of HBOC (hereditary breast and ovarian cancer) and LS (Lynch syndrome),” the authors wrote in JCO Precision Oncology.

Their work was a project of the Mayo Clinic Center for Individualized Medicine Tapestry study, which aims at advancing personalized medicine and developing a dataset for genetic research.

For the current study, Helix, a San Mateo, Calif. population genomics company, collaborated with Mayo Clinic to perform exome sequencing on the following genes:

According to the Mayo Clinic:

  • BRCA1 can lead to a 50% chance of breast cancer, and a 40% chance of ovarian cancer, respectively, as well as other cancers.
  • BRCA2 mutations suggest risk of breast cancer and ovarian cancer is 50% and 20%, respectively.
  • Lynch syndrome relates to an 80% lifetime risk of developing colorectal cancer and 50% risk of uterine and endometrial cancer.

Mayo/Helix researchers performed genetic screenings on more than 44,000 study participants. According to their published study, of the 550 people who were found to have hereditary breast cancer or Lynch syndrome:

  • 387 had hereditary breast and ovarian cancer (27.2% BRCA1, 42.8% BRCA2).
  • 163 had lynch syndrome (12.3% MSH6, 8.8% PMS2, 4.5% MLH1, 3.8% MSH2, and 0.2% EPCAM).
  • 52.1% were newly diagnosed carriers.
  • 39.2% of the 550 carriers did not meet genetic evaluation criteria set by the National Comprehensive Cancer Network (NCCN).
  • Participants recruited by researchers hailed from Rochester, Minn.; Phoenix, Ariz.; and Jacksonville, Fla.
  • Minorities were less likely to meet the NCCN criteria than those who reported as White (51.5% as compared to 37.5%).

“Our results emphasize the importance of expanding genetic screening to identify people at risk for these cancer predisposition syndromes,” Samadder said.

Exome Data in EHRs  

Exomes of more than 100,000 Mayo Clinic patients have been sequenced and the results are being included in the patients’ electronic health records (EHR) as part of the Tapestry project. This gives clinicians access to patient information in the EHRs so that the right tests can be ordered at the right time, Mayo Clinic noted in its article.

“Embedding genomic data into the patient’s chart in a way that is easy to locate and access will assist doctors in making important decisions and advance the future of genomically informed medicine.” said Cherisse Marcou, PhD, co-director and vice chair of information technology and bioinformatics in Mayo’s Clinical Genomics laboratory.

While more research is needed, Mayo Clinic’s accomplishments suggest advancements in gene sequencing and technologies are making way for data-driven tools to aid physicians.

As the cost of gene sequencing continue to fall due to improvement in the technologies, more screenings for health risk factors in individuals will likely become economically feasible. This may increase the role medical laboratories play in helping doctors use exomes and whole genome sequencing to screen patients for risk of specific cancers and health conditions.

—Donna Marie Pocius

Related Information:

Exome Sequencing Identifies Carriers of the Autosomal Dominant Cancer Predisposition Disorders Beyond Current Practice Guideline Recommendation

Mayo Clinic Uncovers Genetic Cancer Risk in 550 Patients

Mayo Clinic’s Data-Driven Quest to Advance Individualized Medicine

Mayo Clinic Scientists Develop AI Tool That Can Determine If Gut Microbiome is Healthy

Although it is a non-specific procedure that does not identify specific health conditions, it could lead to new biomarkers that clinical laboratories could use for predictive healthcare

Researchers from the Mayo Clinic recently used artificial intelligence (AI) to develop a predictive computational tool that analyzes an individual’s gut microbiome to identify how a person may experience improvement or deterioration in health. 

Dubbed the Gut Microbiome Wellness Index 2 (GMWI2), Mayo’s new tool does not identify the presence of specific health conditions but can detect even minor changes in overall gut health.

Built on an earlier prototype, GMWI2 “demonstrated at least 80% accuracy in differentiating healthy individuals from those with any disease,” according to a Mayo news release. “The researchers used bioinformatics and machine learning methods to analyze gut microbiome profiles in stool samples gathered from 54 published studies spanning 26 countries and six continents. This approach produced a diverse and comprehensive dataset.”

The Mayo researchers published their findings in the journal Nature Communications titled, “Gut Microbiome Wellness Index 2 Enhances Health Status Prediction from Gut Microbiome Taxonomic Profiles.”

“Finally, we have a standardized index to quantitatively measure how ‘healthy’ a person’s gut microbiome is,” said Jaeyun Sung, PhD, a computational biologist at the Mayo Clinic Center for Individualized Medicine: Microbiomics Program and senior author of the study in the news release.

“Our tool is not intended to diagnose specific diseases but rather to serve as a proactive health indicator,” said senior study author Jaeyun Sung, PhD (above), a computational biologist at the Mayo Clinic Center for Individualized Medicine: Microbiomics Program in the news release ease. “By identifying adverse changes in gut health before serious symptoms arise, the tool could potentially inform dietary or lifestyle modifications to prevent mild issues from escalating into more severe health conditions, or prompt further diagnostic testing.” For microbiologists and clinical laboratory managers, this area of new knowledge about the human microbiome may lead to multiplex diagnostic assays. (Photo copyright: Mayo Clinic.)

Connecting Specific Diseases with Gut Microbiome

Gut bacteria that resides in the gastrointestinal tract consists of trillions of microbes that help regulate various bodily functions and may provide insights regarding the overall health of an individual. An imbalance in the gut microbiome is associated with an assortment of illnesses and chronic diseases, including cardiovascular issues, digestive problems, and some cancers and autoimmune diseases

To develop GMWI2, the Mayo scientists provided the machine-learning algorithm with data on microbes found in stool samples from approximately 8,000 people collected from 54 published studies. They looked for the presence of 11 diseases, including colorectal cancer and inflammatory bowel disease (IBS). About 5,500 of the subjects had been previously diagnosed with one of the 11 diseases, and the remaining people did not have a diagnosis of the conditions. 

The scientists then tested the efficacy of GMWI2 on an additional 1,140 stool samples from individuals who were diagnosed with conditions such as pancreatic cancer and Parkinson’s disease, compared with those who did not have those illnesses.

The algorithm gives subjects a score between -6 and +6. People with a higher GMWI2 score have a healthier microbiome that more closely resembles individuals who do not have certain diseases.

Likewise, a low GMWI2 score suggests the individual has a gut microbiome that is similar to those who have specific illnesses. 

Highly Accurate Results

According to their study, the researchers determined that “GMWI2 achieves a cross-validation balanced accuracy of 80% in distinguishing healthy (no disease) from non-healthy (diseased) individuals and surpasses 90% accuracy for samples with higher confidence,” they wrote in Nature Communications.

Launched in 2020, the original GMWI (Gut Microbiome Wellness Index) was trained on a much smaller number of samples but still showed similar results. 

The researchers tested the enhanced GMWI2 algorithm across various clinical schemes to determine if the results were similar. These scenarios included individuals who had previous fecal microbiota transplants and people who had made dietary changes or who had exposure to antibiotics. They found that their improved tool detected changes in gut health in those scenarios as well.

“By being able to answer whether a person’s gut is healthy or trending toward a diseased state, we ultimately aim to empower individuals to take proactive steps in managing their own health,” Sung said in the news release.

The Mayo Clinic team is developing the next version of their tool, which will be known as the Gut Microbiome Wellness Index 3. They plan to train it on at least 12,000 stool samples and use more sophisticated algorithms to decipher the data.

More research and studies are needed to determine the overall usefulness of Mayo’s Gut Microbiome Wellness Index and its marketability. Here is a world-class health institution disclosing a pathway/tool that analyzes the human microbiome to identify how an individual may be experiencing either an improvement in health or a deterioration in health.

The developers believe it will eventually help physicians determine how patients’ conditions are improving or worsening by comparing the patients’ microbiomes to the profiles of other healthy and unhealthy microbiomes. As this happens, it would create a new opportunity for clinical laboratories to perform the studies on the microbiomes of patients being assayed in this way by their physicians.  

—JP Schlingman

Related Information:

Mayo Researchers Develop Tool That Measures Health of a Person’s Gut Microbiome

Gut Microbiome Wellness Index 2 Enhances Health Status Prediction from Gut Microbiome Taxonomic Profiles

Stanford University Scientists Discover New Lifeform Residing in Human Microbiome

Researchers Use Ingestible Device to Non-Invasively Sample Human Gut Bacteria in a Development That Could Enable More Clinical Laboratory Testing of Microbiomes

Researchers from Stanford University Develop First Synthetic Human Microbiome from Scratch

100-Biomarker Lab Test for Alzheimer’s Disease Developed by Team at University of Pittsburgh

New clinical laboratory test could replace conventional spinal tap for diagnosing neurodegenerative disease

In a proof-of-concept study, University of Pittsburgh (Pitt) scientists validated a clinical laboratory test that measures more than 100 different genetic sequences associated with Alzheimer’s disease. The Pitt researchers believe the new diagnostic platform could help clinicians “capture the multifaceted nature of Alzheimer’s pathology and streamline early disease diagnostics,” according to a news release.

Clinical laboratory blood tests that detect biomarkers such as phosphorylated tau protein (pTau) have emerged in studies as diagnostic possibilities for Alzheimer’s disease, which is traditionally diagnosed using a lumbar puncture (spinal tap) procedure.

The Pitt scientists published the findings of their study titled, “Multi-Analyte Proteomic Analysis Identifies Blood-based Neuroinflammation, Cerebrovascular, and Synaptic Biomarkers in Preclinical Alzheimer’s Disease,” in the journal Molecular Neurodegeneration.

In their paper, neuroscientist Thomas Karikari, PhD, Assistant Professor of Psychiatry at  University of Pittsburgh, lead author of the study, and his research team acknowledged that progress has been made in detecting Alzheimer’s disease with blood-based biomarkers. However, they note that “two key obstacles remain: the lack of methods for multi-analyte assessments and the need for biomarkers for related pathophysiological processes like neuroinflammation, vascular, and synaptic dysfunction.”

The Pitt scientists believe the focus on so-called “classical Alzheimer’s blood biomarkers” limits exploration of neurodegenerative disease.

“Alzheimer’s disease should not be looked at through one single lens. Capturing aspects of Alzheimer’s pathology in a panel of clinically validated biomarkers would increase the likelihood of stopping the disease before any cognitive symptoms emerge,” said neuroscientist Thomas Karikari, PhD (above), Assistant Professor of Psychiatry, University of Pittsburgh, and lead author of the study in a news release. Should further studies prove Pitt’s research sound, clinical laboratories may have a replacement test for diagnosing neurodegenerative disease. (Photo copyright: University of Pittsburgh.)

120 Proteins Analyzed Simultaneously

To conduct their research, the Pitt scientists performed a proof-of-concept study on 176 blood samples from 113 adults in Pennsylvania (average age of 76.7). They analyzed the blood using the NULISAseq CNS (central nervous system) Disease Panel 120 by Alamar Biosciences of Freemont, California.

On its website, Alamar Biosciences explains that the disease panel offers neurological researchers:

  • “Multiplexed analysis of 120 neuro-specific and inflammatory proteins from 10 µl of plasma or CSF (cerebrospinal fluid).
  • Detection of “critical biomarkers—including pTau-217, GFAP (glial fibrillary acidic protein), NEFL (neurofilament light polypeptide) and alpha-synuclein.”

The NULISAseq test works with “a proprietary sequential immunocomplex capture and release mechanism and the latest advances in next-generation sequencing,” according to the company.

Inside Precision Medicine noted that the Alamar Biosciences assay enabled Pitt scientists to detect:

  • Biomarkers (usually found in CSF) “correlating with patients’ amyloid positivity status and changes in amyloid burden over time,” and,
  • Biomarkers including “neuroinflammation, synaptic function, and vascular health, which had not previously been validated in blood samples.”

“The performance of the NULISA platform was independently validated against conventional assays for classic Alzheimer’s biomarkers for each sample. Biomarker profiles over two years were also compared with imaging-based measures of amyloid, tau, and neurodegeneration,” LabMedica reported.

Opportunity to Track Alzheimer’s

Karikari sees the diagnostic platform being used to track individuals’ blood biomarker changes over time. 

In their Molecular Neurodegeneration paper, the Pitt researchers wrote, “These (results) were not limited to markers such as pTau217, p-Tau231, p-Tau181, and GFAP, the elevation of which have consistently shown strong associations with brain Aβ [amyloid beta] and/or tau load, but included novel protein targets that inform about the disease state of the individual in different pathological stages across the biological Alzheimer’s disease continuum.”

About seven million Americans are affected by Alzheimer’s disease, according to the Alzheimer’s Association, which estimated that figure will grow to 13 billion by 2050.

Further studies by Karikari may include larger samples and greater diversity among the people studied, Inside Precision Medicine noted.

“[Karikari’s] lab is developing a predictive model that correlates biomarker changes detected using NULISAseq with brain autopsy data and cognitive assessments collected over the course of several years. Their goal is to identify blood biomarkers that can help stage the disease and predict its progression, both for decision-making around clinical management and treatment plans,” the Pitt news release states.

His research was supported by the National Institute on Aging.

The Pitt scientists have developed a multiplex test that works with 100 different genetic sequences associated with Alzheimer’s. Such advances in the understanding of the human genome are giving scientists the opportunity to combine newly identified gene sequences that have a role in specific disease states.

In turn, as further studies validate the value of these biomarkers for diagnosing disease and guiding treatment decisions, clinical laboratories will have new assays that deliver more value to referring physicians and their patients.

—Donna Marie Pocius

Related Information:

Pitt Scientists Validated a New Panel for Blood Biomarkers of Alzheimer’s

Multi-Analyte Proteomic Analysis Identifies Blood-based Neuroinflammation, Cerebrovascular, and Synaptic Biomarkers in Preclinical Alzheimer’s Disease

Innovative Blood Test Validated for Comprehensive Early Alzheimer’s Diagnosis

New Blood Test Platform Simultaneously Measures Over 100 Biomarkers of Alzheimer’s Disease

Cerebrospinal Fluid and Plasma Tau as a Biomarker for Brain Tauopathy

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