New vaccine could give clinical laboratories and antimicrobial stewardship programs the tool they need to dramatically reduce hospital-acquired infections
The innovative approach focuses on bolstering the patient’s immune system itself, rather than relying on proteins to fight infections, according to a USC Today article.
Developed by senior study author Brad Spellberg, MD, Chief Medical Officer at the Los Angeles General Medical Center, and colleagues, “The experimental vaccine takes an entirely different approach: It gooses the body’s preexisting supply of pathogen-gobbling immune cells called macrophages, which engulf and digest bacteria, fungi, and other bad actors. These activated fighters, found in all tissues, quickly neutralize incoming invaders which might otherwise multiply rapidly and overwhelm the body’s defenses,” USC Today reported.
“This is very different from developing new antibiotics,” Jun Yan, a doctoral student at Keck School of Medicine and the study’s first author, told USC Today. “This is using our own immune system to fight against different superbugs, which is a different approach than everybody else.”
To develop the vaccine [the USC researchers] formed a biotechnology startup called ExBaq LLC in Bethesda, Md.
“The pandemic stimulated unprecedented innovation in vaccine development, where federal funding and university-industry partnerships were game changers for translating promising discoveries from academic labs for the good of all,” said Ishwar K. Puri, PhD (above), senior vice president of research and innovation at USC. “We are both pleased and proud of the critical support the USC Stevens Center provided to enable the development of ExBaq’s experimental vaccine that protects vulnerable populations from serious infections.” Clinical laboratories that work with hospitals in the fight against hospital-acquired infections understand the importance of this discovery. (Photo copyright: University of Southern California.)
USC Vaccine Details
The USC team developed a “protein-free vaccine, composed of aluminum hydroxide, monophosphoryl lipid A, and fungal mannan, that stimulates the innate immune system and confers protection,” the researchers wrote in Science Translational Medicine.
“Tested in two independent labs, the vaccine works within 24 hours and lasts for up to 28 days. In lab models, the number of pathogen-eating immune cells in the blood increased dramatically, and survival time of invasive blood and lung infections improved. Early data suggest that a second dose could extend the window to prevent infection,” USC Today reported.
Unlike anything currently available, the new vaccine focuses on boosting the body itself instead of creating antibodies against certain pathogens. A mere dose of the vaccine is described to “provide rapid protection against nine different bacteria and fungi species,” USC Today noted.
“It’s an early warning system. It’s like Homeland Security putting out a terror alert. Everybody, keep your eyes open. Keep an eye out for suspicious packages. You’re alerting the soldiers and tanks of your immune system. The vaccine activates them,” Spellberg told USC Today.
“The vaccine acted through stimulation of the innate, rather than the adaptive, immune system, as demonstrated by efficacy in the absence of lymphocytes that were abrogated by macrophage depletion. A role for macrophages was further supported by the finding that vaccination induced macrophage epigenetic alterations that modulated phagocytosis and the inflammatory response to infection. Together, these data show that this protein-free vaccine is a promising strategy to prevent deadly antimicrobial-resistant healthcare-associated infections,” the researchers wrote in Science Translational Medicine.
“Patients who acquire infections from surgery spend, on average, an additional 6.5 days in the hospital, are five times more likely to be readmitted after discharge and twice as likely to die. Moreover, surgical patients who develop infections are 60% more likely to require admission to a hospital’s intensive care unit. Surgical infections are believed to account for up to 10 billion dollars annually in healthcare expenditures,” the CDC reports.
“All hospitalized patients are susceptible to contracting a [hospital-acquired] infection. Some patients are at greater risk than others: young children, the elderly, and persons with compromised immune systems are more likely to get an infection. Other risk factors are long hospital stays, the use of indwelling catheters, failure of healthcare workers to wash their hands, and overuse of antibiotics,” the CDC notes.
Therefore, USC’s new vaccine may be just what the doctor ordered to protect patients in hospitals and other healthcare settings from deadly HAIs.
Looking Ahead
There are currently no vaccines that are FDA-approved that treat “the most serious antibiotic resistant infections,” USC Today reported.
“Even if there were such vaccines, multiple vaccines would have to be deployed simultaneously to protect against the full slate of antibiotic-resistant microbes that cause healthcare-acquired infections,” Brian Luna, PhD, assistant professor of molecular microbiology and immunology at USC’s Keck School of Medicine, told USC Today.
Thus, USC’s new vaccine could be a boon to hospital antimicrobial stewardship programs. But so far, it has only been tested on mice.
“The next step is getting guidance from the US Food and Drug Administration (FDA) on the design of a clinical trial. The first such trial would be done in healthy volunteers to find the right dose of vaccine that is safe and triggers the same kind of immune response in people as seen in the mice,” USC Today reported.
ExBaq LLC has begun talking with potential larger partners who might be willing to help develop the vaccine into clinical testing.
For years hospitals and other healthcare settings—such as long-term care facilities, urgent care clinics, and clinical laboratories—have fought an uphill battle against superbugs. So, for a vaccine to be on the horizon that can prevent life-threatening hospital-acquired infections would be a game changer.
With antimicrobial stewardships being a requirement in all hospitals, medical laboratory managers and microbiologists may celebrate this new development and its potential to be a useful tool in fighting antimicrobial resistant bacteria in their facilities.
Hello primary diagnosis of digital pathology images via artificial intelligence! Goodbye light microscopes!
Digital pathology is poised to take a great leap forward. Within as few as 12 months, image analysis algorithms may gain regulatory clearance in the United States for use in primary diagnosis of whole-slide images (WSIs) for certain types of cancer. Such a development will be a true revolution in surgical pathology and would signal the beginning of the end of the light microscope era.
A harbinger of this new age of digital pathology and automated image analysis is a press release issued last week by Ibex Medical Analytics of Tel Aviv, Israel. The company announced that its Galen artificial intelligence (AI)-powered platform for use in the primary diagnosis of specific cancers will undergo an accelerated review by the Food and Drug Administration (FDA).
FDA’s ‘Breakthrough Device Designation’ for Pathology AI Platform
Ibex stated that “The FDA’s Breakthrough Device Designation is granted to technologies that have the potential to provide more effective treatment or diagnosis of life-threatening diseases, such as cancer. The designation enables close collaboration with, and expedited review by, the FDA, and provides formal acknowledgement of the Galen platform’s utility and potential benefit as well as the robustness of Ibex’s clinical program.”
“All surgical pathologists should recognize that, once the FDA begins to review and clear algorithms capable of using digital pathology images to make an accurate primary diagnosis of cancer, their daily work routines will be forever changed,” stated Robert L. Michel, Editor-in-Chief of Dark Daily and its sister publication The Dark Report. “Essentially, as FDA clearance is for use in clinical care, pathology image analysis algorithms powered by AI will put anatomic pathology on the road to total automation.
“Clinical laboratories have seen the same dynamic, with CBCs (complete blood counts) being a prime example. Through the 1970s, clinical laboratories employed substantial numbers of hematechnologists [hematechs],” he continued. “Hematechs used a light microscope to look at a smear of whole blood that was on a glass slide with a grid. The hematechs would manually count and record the number of red and white blood cells.
“That changed when in vitro diagnostics (IVD) manufacturers used the Coulter Principle and the Coulter Counter to automate counting the red and white blood cells in a sample, along with automatically calculating the differentials,” Michel explained. “Today, only clinical lab old-timers remember hematechs. Yet, the automation of CBCs eventually created more employment for medical technologists (MTs). That’s because the automated instruments needed to be operated by someone trained to understand the science and medicine involved in performing the assay.”
Primary Diagnosis of Cancer with an AI-Powered Algorithm
Surgical pathology is poised to go down a similar path. Use of a light microscope to conduct a manual review of glass slides will be supplanted by use of digital pathology images and the coming next generation of image analysis algorithms. Whether these algorithms are called machine learning, computational pathology, or artificial intelligence, the outcome is the same—eventually these algorithms will make an accurate primary diagnosis from a digital image, with comparable quality to a trained anatomic pathologist.
How much of a threat is automated analysis of digital pathology images? Computer scientist/engineer Ajit Singh, PhD, a partner at Artiman Ventures and an authority on digital pathology, believes that artificial intelligence is at the stage where it can be used for primary diagnosis for two types of common cancer: One is prostate cancer, and the other is dermatology.
On June 17, Ajit Singh, PhD (above), Partner at Artiman Ventures, will lead a special webinar and roundtable discussion for all surgical pathologists and their practice administrators on the coming arrival of artificial intelligence-powered algorithms to aid in the primary diagnosis of certain cancers. Regulatory approval for such solutions may happen by the end of this year. Such a development would accelerate the transition from light microscopes to a fully digital pathology workflow. Singh is shown above addressing the 2018 Executive War College. (Photo copyright: The Dark Report.)
“It is now possible to do a secondary read, and even a first read, in prostate cancer with an AI system alone. In cases where there may be uncertainty, a pathologist can review the images. Now, this is specifically for prostate cancer, and I think this is a tremendous positive development for diagnostic pathways,” he added.
Use of Digital Pathology with AI-Algorithms Changes Diagnostics
Pathologists who are wedded to their light microscopes will want to pay attention to the impending arrival of a fully digital pathology system, where glass slides are converted to whole-slide images and then digitized. From that point, the surgical pathologist becomes the coach and quarterback of an individual patient’s case. The pathologist guides the AI-powered image analysis algorithms. Based on the results, the pathologist then orders supplementary tests appropriate to developing a robust diagnosis and guiding therapeutic decisions for that patient’s cancer.
In his interview with The Dark Report, Singh explained that the first effective AI-powered algorithms in digital pathology will be developed for prostate cancer and skin cancer. Both types of cancer are much less complex than, say, breast cancer. Moreover, the AI developers have decades of prostate cancer and melanoma cases where the biopsies, diagnoses, and downstream patient outcomes create a rich data base from which the algorithms can be trained and tuned.
This webinar is organized as a roundtable discussion so participants can interact with the expert panelists. The Chair and Moderator is Ajit Singh, PhD, Adjunct Professor at the Stanford School of Medicine and Partner at Artiman Ventures.
The panelists (above) represent academic pathology, community hospital pathology, and the commercial sector. They are:
Because the arrival of automated analysis of digital pathology images will transform the daily routine of every surgical pathologist, it would be beneficial for all pathology groups to have one or more of their pathologists register and participate in this critical webinar.
The roundtable discussion will help them understand how quickly AI-powered image analysis is expected be cleared for use by the FDA in such diseases as prostate cancer and melanomas. Both types of cancers generate high volumes of case referrals to the nation’s pathologists, so potential for disruption to long-standing client relationships, and the possible loss of revenue for pathology groups that delay their adoption of digital pathology, can be significant.
On the flip side, community pathology groups that jump on the digital pathology bandwagon early and with the right preparation will be positioned to build stronger client relationships, increase subspecialty case referrals, and generate additional streams of revenue that boost partner compensation within their group.
Also, because so many pathologists are working remotely, Dark Daily has arranged special group rates for pathology practices that would like their surgical pathologists to participate in this important webinar and roundtable discussion on AI-powered primary diagnosis of pathology images. Inquire at info@darkreport.com or call 512-264-7103.
Pathologists and practice administrators should prepare a strategy and a timetable for their group’s acquisition and deployment of a digital pathology system and whole slide imaging
Not in decades have pathologists faced a comparable dual threat. One threat is the use of digital pathology and WSI for primary diagnosis in ways that deliver faster answers to referring physicians, while creating new business models for anatomic pathology groups. At greatest risk from this technology, however, may be sub-specialist pathologists who depend on specialty referrals and second-opinion consults.
Second Threat Is How Digital Pathology Can Erode Pathology Group’s Revenue
The second threat is how failure to adopt digital pathology and WSI at the right time in the market cycle will put a pathology group’s revenue at risk, while causing pathologist compensation to erode. Pathology groups that are quick to adopt digital pathology and whole slide imaging are expected to gain clinical advantage and additional case referrals, while pathology groups that defer adoption will probably lose market share—and the revenue associated with those lost case referrals.
How Fast Will Pathology Groups Act to Implement Digital Pathology?
It was last April when the FDA cleared the first digital pathology system and whole slide imaging for use in the primary diagnosis of biopsied tissue and resection cases. With clearance to market of the Philips IntelliSite Pathology Solution (PIPS), it is expected that other companies will submit their digital pathology systems for FDA review as well. As that happens, the market for digital pathology systems will expand and become more competitive.
“How fast pathologists in the United States adopt digital pathology for primary diagnosis is the big question,” observed Robert L. Michel, Editor-In-Chief of The Dark Report, Dark Daily’s sister publication. “We’ve interviewed pathologists at several community pathology group practices who currently use digital pathology and whole slide images for things like tumor boards, second opinion consults within and without their practice, and teaching purposes. They have strong opinions about how quickly they want their group to begin using a digital pathology system for primary diagnosis.
“For example, Advanced Pathology Associates (APA) in Rockville, Md., is a group with 15 pathologists who cover seven hospitals,” stated Michel. “APA was the community pathology group site for the study data Philips needed to submit with its FDA pre-market application. They had the system for the nine-month trial and used it to evaluate 500 cases and thousands of glass slides and WSIs. APA returned the system at the conclusion of the study, but pathologists at APA are already in the process of acquiring their own digital pathology system to use for primary diagnosis.”
Anatomic Pathology Group Went Hands-on with Digital Pathology System
In a story The Dark Report published about Advanced Pathology Associates, pathologist Nicolas Cacciabeve, MD, APA’s Managing Partner, commented, “Because we had the opportunity to be hands-on with this digital pathology system, we saw how it changes daily workflow, improves the ergonomics of reading cases, and contributes to increased productivity.”
Cacciabeve identified the immediate benefits APA will accrue after it acquires its own digital pathology system and begins to use it for primary diagnosis. “[Having a digital pathology system] … also opens new opportunities for our pathologists to add more value—whether it is handling more complex cases through real-time consultation, or through better data management and image retrieval, or freeing up pathologists to get out of the lab to collaborate with clinicians.”
Pathologist Clive Taylor, MD, Considers DP’s Clearance to Be ‘Huge’
“The FDA’s clearance of this system for primary diagnosis is huge,” stated Taylor. “… I say that because digital slide scanners in many pathology departments around the country are used secondarily. For example, a pathologist will look at a glass biopsy slide today and think, ‘I should scan this to get a score, or an accurate count, or to send it to a colleague in Washington or London or some place.’ In that sense, pathology labs are using whole slide imaging for secondary purposes.
“The FDA clearance of whole slide imaging for primary diagnostics will foster changes in anatomic pathology departments that will improve the accuracy and speed of diagnosis and drastically reduce the time it takes to get second opinions and to reach a primary diagnosis,” Taylor predicted.
Pathologists, Practice Administrators Need a Strategy for Digital Pathology
Because of the potential for digital pathology systems and whole slide imaging to be disruptive to both the clinical practice of pathology and the revenue and income earned by pathologists, it is recommended that pathology practice administrators and pathologist business leaders of their respective groups understand this new technology and how early-adopter pathology labs are using it to add value to their diagnostic services while generating new streams of revenue.
The four expert speakers for this critical Dark Daily webinar are (clockwise from upper left): Keith Kaplan, MD, Chief Medical Officer, Corista, Concord, Mass.; Liron Pantanowitz, MD, Professor of Pathology and Biomedical Informatics at the University of Pittsburgh Medical Center, Pittsburgh; Isaac R. Grindeland, MD, Gastrointestinal Pathology, Incyte Diagnostics, Spokane Valley, Wash.; and Dan Angress, for ClearPath Derm of Dayton, Ohio, and President of Angress Consulting, LLC, Los Angeles, Calif. (Photo copyright: Dark Daily.)
This critical webinar takes place on Thursday, August 17, 2017 at 1:00 PM EDT.
Essential Knowledge about Digital Pathology Systems, Whole Slide Imaging
The webinar is organized to help all pathology groups, academic pathology departments, and pathology laboratories understand:
The current capabilities of the technology for digital pathology and WSI;
How these technologies are evolving in ways that add functionality and improve productivity; and—most importantly,
Two case studies of pathology groups already using digital pathology and WSI imaging to add clinical value and develop new sources of revenue.
Speaking during this webinar will be:
Keith Kaplan, MD, Chief Medical Officer, Corista, Concord, Mass.: For nearly a decade, Kaplan has been one of the leading commentators on the use of digital technologies and Web 2.0 capabilities in pathology. He will provide strategic context about why the FDA’s clearance of a digital pathology system for use in primary diagnosis is a trigger event for all pathology groups.
Liron Pantanowitz, MD, Professor of Pathology and Biomedical Informatics at the University of Pittsburgh Medical Center, Pittsburgh, Pa.: An internationally known expert on the use of digital pathology systems and whole slide imaging, Pantanowitz will give webinar participants a concise understanding of the technology’s current capabilities; how it is being used at UPMC; the lessons learned in the use of digital pathology to support UPMC’s international pathology collaborations; and what technology advances to expect in the near future.
Dan Angress, for ClearPath Derm of Dayton, Ohio, and President of Angress Consulting, LLC, Los Angeles, Calif.: This is a fascinating case study of how ClearPath Derm is using digital pathology capabilities to support added value services for its referring physicians that, most importantly, generate additional revenue for the pathology group.
Isaac R. Grindeland, MD, Gastrointestinal Pathology, Incyte Diagnostics, Spokane Valley, Wash.: This regional pathology super-group has 40 pathologists, four anchor locations, and contracts with multiple hospitals. Grindeland will explain how Incyte leverages its digital pathology capabilities to improve productivity and performance, while better meeting the needs of its hospital and physician clients.
Preparing Pathology Groups for Disruptive Potential of DB, WSI
Because of the potential for digital pathology systems and whole slide imaging to disrupt many long-established clinical practices, while at the same time creating new financial winners and losers among the nation’s pathology groups, it is imperative that pathologists and practice administrators gain the necessary knowledge to prepare their groups. Armed with these insights, they then can develop timely and appropriate strategies to ensure their group’s clinical excellence and financial sustainability moving forward.
For details about the August 17 webinar and to register, use this link (or copy this URL and paste it into your browser: https://ddaily.wpengine.com/webinar/primary-diagnosis-with-digital-pathology-systems-and-whole-slide-images-what-every-pathologist-needs-to-know-why-it-will-be-disruptive-and-how-innovative-pathology-groups-are-already-making-money-w).
