As with clinical laboratories, worker shortage is affecting large retail pharmacy chains and independent pharmacies alike
Staffing shortages in clinical laboratories and anatomic pathology groups caused by the Great Resignation is having a similar impact on retail pharmacy chains. Consequently, pharmacy chains are reducing store hours and even closing sites, according to USA Today.
As Dark Daily covered in “Clinical Laboratories Suffer During the ‘Great Resignation,” the US Bureau of Labor Statistics reported that from August 2021 through December 2021, the healthcare and social assistance workforce saw nearly 2.8 million workers quit—an average of 551,000 people during each of those months. By comparison, in December 2020, 419,000 healthcare workers left their jobs.
Pharmacies now report similar shortages in qualified workers, partly due to the sharp decrease in revenue from COVID-19 vaccinations, but also due to worker burnout. Both developments have counterparts in clinical laboratories as well.
“I’m concerned that without the help from the COVID-19 vaccinations that everyone needed, these pharmacies that were able to tough it out for another year or two might not be able to continue,” B. Douglas Hoey, PharmD, CEO of the National Community Pharmacists Association (NCPA), told USA Today. Clinical laboratories that processed large numbers of SARS-CoV-2 diagnostics have experienced the same sudden drop in revenue causing similar difficulties maintaining staffing levels. (Photo copyright: Cardinal Health.)
Staffing Shortages Leading to Safety Concerns
According to the Washington Post’s coverage of a study conducted in 2021 of 6,400 pharmacists in various retail and hospital environments, a majority did not feel they could conduct their jobs efficiently or safely.
“75% of the pharmacists in [the] survey disagreed with the statement ‘Sufficient time is allocated for me to safely perform patient care/clinical duties.’”
“71% said there were not enough pharmacists working to ‘meet patient care/clinical duties.’”
“65% said ‘payment for pharmacy services’ did not support their ‘ability to meet clinical and non-clinical duties.’”
“Workplace conditions have pushed many pharmacists and pharmacy teams to the brink of despair,” said the board of trustees of the American Pharmacists Association (APhA) in a press release, the Washington Post reported. “Pharmacy burnout is a significant patient safety issue. It is impacting patients today with delayed prescription fulfillment, unacceptable waits for vaccines and testing, and potential errors due to high volume, long hours, and pressure to meet performance metrics.”
This is a sentiment that has been repeated across every facet of healthcare—including in clinical laboratories—where staff shortages are being felt.
Shortage of Pharmacists or Lack of Morale?
In “Drugstores Make Slow Headway on Staffing Problems,” the Associated Press outlined from where it believes the staffing problems originate. “There isn’t a shortage of pharmacists. There’s just a shortage of pharmacists who want to work in those high-stress environments that aren’t adequately resourced,” Richard Dang, PharmD, Assistant Professor of Clinical Pharmacy at the University of Southern California (USC), told the Associated Press.
“The pressure never let up. No matter how mind-numbing and repetitive the work could get, we had to work with constant vigilance, as there was absolutely no room for error,” Bator wrote.
“We techs were left unsupported and unmentored throughout the pandemic,” she continued. “No one cared if we were learning or growing in our job, and there was little encouragement for us to enter training or residency programs. We were just expendable foot soldiers: this is not a policy that leads to long-term job retention.”
Healthcare workers feeling burnt out and under-appreciated during the pandemic led to mass resignations that produced staffing shortages throughout the industry. It appears this trend has caught up to pharmacies as well.
Workforce Wasn’t Ready
Local and chain pharmacies played an important role in the COVID-19 pandemic. Pharmacists distributed COVID-19 tests and treatment to their communities. But for many it was a struggle to keep up.
Stefanie Ferreri, PharmD, Distinguished Professor in Pharmacy Practice and Chair of the Division of Practice Advancement and Clinical Education at University of North Carolina’s Eshelman School of Pharmacy, told the Associated Press that she felt the expanding role of pharmacies in public health was “awesome” but stated that “the workforce wasn’t quite ready” for what took place during the pandemic.
Much like Bator recounted in her essay, pharmacy workers suddenly had new responsibilities, longer working hours, and little room for error.
“There are multiple stories about pharmacists just getting overwhelmed. The stress level and burnout is high,” Dima M. Qato, PharmD, PhD, told USA Today. Qato is Hygeia Centennial Chair and Associate Professor (with tenure) in the Titus Family Department of Clinical Pharmacy at the University of Southern California. “So, pharmacists leave, and stores have to shorten” their hours, she added.
Scheduling and Patience Can Help
What can be done to soften some of the issues staff shortages are causing? Ferreri suggests that pharmacies set appointment times for regular customers so that a pharmacist’s workload can be more predictable. An appointment system can ease stress for both the pharmacist and patient. Ferreri advises customers to be patient when it comes to their prescriptions. She suggests patients give pharmacies more than a day’s notice for refills.
“I think on both sides of the counter, we need to all have grace and realize this is a very challenging and stressful time for everyone,” said Brigid Groves, PharmD, Vice President, Pharmacy Practice at the American Pharmacists Association.
With burnout, staff shortages, and stress affecting nearly every aspect of the healthcare industry, having patience with each other will go a long way to helping clinical laboratories, pharmacies, and patients navigate the road ahead.
McGonnagle’s involvement with medical laboratory medicine spans five decades and 38 years of support for the nation’s anatomic pathologists and clinical laboratory professionals
The presentation was made in front of 950 attendees. During the presentation, several of McGonnagle’s peers described the multiple ways that he regularly supports the profession of clinical laboratory medicine.
In 1986, McGonnagle was engaged by the College of American Pathologists (CAP) to develop the concept of a new, tabloid-sized, color magazine to be called CAP Today. It was January 1987 when monthly publication of CAP Today formally commenced.
McGonnagle was again tapped by CAP to oversee production of another publication that was created in 1996. Since its inception, he has also been publisher of the Archives of Pathology and Laboratory Medicine.
During last week’s Executive War College on Diagnostic, Laboratory, and Pathology Management in New Orleans, Bob McGonnagle (center right) was honored with a Lifetime Achievement Award for his 38 years as Publisher of CAP Today, along with his innumerable contributions to advancing the clinical laboratory and anatomic pathology professions. McGonnagle is joined by Robert Michel, founder of the Executive War College on his right; Al Lui, MD, of Innovative Pathology Medical Group on his far right; and Stan Schofield of Compass Group on his left. (Photo copyright: The Dark Report.)
38 Years as Publisher of CAP Today Magazine
But McGonnagle’s duties as publisher are just the starting point of the contributions McGonnagle has made to the House of Laboratory Medicine in the past 38 years. He is regularly seen at pathology and lab meetings, conferences, and workshops throughout the United States and overseas. As a speaker and moderator, he is much in demand. He is often asked to sit in during strategic retreats and think tanks organized by laboratory associations, lab organizations, and lab vendors.
During the presentation ceremony, three of McGonnagle’s peers offered insights and examples of his unstinting support of pathologists, lab managers, and companies serving medical laboratories. First to speak was Stan Schofield, Managing Principal at Compass Group and past CEO of NorDx Laboratories in Scarborough, Maine.
“Bob McGonnagle is excellent as a moderator for conferences, meetings, and conventions and will always say ‘yes’ when asked to serve,” Schofield observed. “He is quick to recognize and adapt to emerging issues. He processes information from various parts of the lab industry, then generates insights and information all can understand and use to the benefit of their respective labs and pathology groups.”
Next to speak was pathologist Al Lui, MD, President and Medical Director, at Innovative Pathology Medical Group in Torrance, California. Lui has been active on committees and initiatives of CAP for decades. “Recognition of Bob McGonnagle’s past and continuing contributions to the profession of pathology and laboratory medicine is long overdue,” he said.
McGonnagle as Farmer, Fan of Classical Music, and Oenophile
Lui then presented slides that showed the range of McGonnagle’s activities outside of his publishing responsibilities. For example, Bob is remote manager of two inherited family farms in Iowa that produce corn, soybeans, and cattle. His wife competes in equestrian events. They are wine aficionados and close personal friends with one of Napa Valley’s most respected vintners.
One key figure in McGonnagle’s publishing activities is the Editor of CAP TodaySherrie Rice. She has served in this role since 1987 and thus has collaborated with Bob for the 38 years of CAP Today’s publication. “His leadership of the periodicals department at the CAP has been brilliant and working alongside him for more than three decades has been the gift of a lifetime,” Rice noted.
Rice also described an underappreciated aspect of McGonnagle’s efforts as Publisher. “Bob constantly works to connect the IVD manufacturers and lab vendors with labs that need and benefit from these solutions,” she noted. “He is quick to recognize emerging technologies and help explain them with in-depth stories in CAP Today that help pathologists and lab managers better understand when such innovations are ready to be implemented.”
A Career That Spans Five Decades
As McGonnagle was handed his Lifetime Achievement Award, Robert Michel, Founder of the Executive War College and Editor-in-Chief of Dark Daily and its sister publication The Dark Report, made several observations. “Bob McGonnagle has all the hallmarks of a loyal friend. He is always willing to help and never asks for anything in return,” Michel noted. “He is discreet and trustworthy, with keen powers of observation and analysis. Our profession is blessed that his career and contributions have spanned five decades.”
All of Bob McGonnagle’s colleagues, friends, and associates are encouraged to use social media to send him congratulations and notes of appreciation for his 38 years of service as Publisher of CAP Today, and for his many contributions to the clinical laboratory and pathology professions.
Here are social media links where it would be appropriate to post comments about Bob McGonnagle, with best wishes, congratulations, and examples of his selfless support:
Prior to that, however, the FDA had already announced its intention to issue a proposed rule giving the agency regulatory oversight of LDTs.
“The FDA has continually supported the passage of the VALID Act by Congress,” attorney Charles Dunham IV, a Shareholder at Greenberg Traurig LLP in Houston, told Dark Daily. “In fact, there is speculation that the VALID Act will be attached to the Pandemic and All Hazards Preparedness Act as it moves through Congress.”
“The FDA may not actually proceed with promulgating rules to regulate LDTs if it is concerned it will not be successful in court if the rules are challenged, which would happen,” said attorney Charles Dunham IV (above), a Shareholder at Greenberg Traurig, LLP. Clinical laboratory leaders can learn more from Dunham during a panel discussion at next week’s 2023 Executive War College on Diagnostics, Clinical Laboratory, and Pathology Management in New Orleans. (Photo copyright: Greenberg Traurig LLP.)
Arguments For and Against FDA LDT Regulation of LDTs
Supporters of the VALID Act contend that putting LDTs under FDA regulation will lead to improved patient safety and less review for low-risk tests. Their argument is that LDTs should undergo the same FDA review and approval process as other medical devices.
Hospital laboratory managers and pathologists—particularly in academic medical center laboratories—have largely opposed FDA regulation of LDTs. They prefer to keep the current setup under which lab-developed tests are validated under the Clinical Laboratory Improvement Amendments of 1988 (CLIA). They argue that FDA intervention will slow down development of new tests.
In response, an FDA official indicated during the American Clinical Laboratory Association’s (ACLA) annual meeting on March 1 that the federal agency plans to issue a proposed rule to regulate LDTs, BioWorld reported. That rulemaking has not yet emerged. It’s possible the FDA will wait and see what happens in Congress with the VALID Act.
“Some legal experts have suggested that one significant new legal challenge FDA may face is the Supreme Court’s West Virginia v. EPA decision last summer that limited the ability of the EPA to cap power plant emissions by regulation due to the EPA’s lack of explicit congressional authority to do so,” said Gee, who also will appear on the Executive War College legal panel next week.
“The West Virginia v. EPA ruling provides support for those in the clinical lab industry who point to the FDA’s lack of clear statutory authority to regulate LDTs and therefore fundamentally disagree with FDA’s longstanding position that LDTs are medical devices subject to FDA’s authority to regulate,” he added.
Actions Clinical Laboratory Managers Can Take
Clinical laboratory managers who want to share their thoughts about the future of LDT regulation may want to take one or both of the following actions:
Contact their representatives in Congress.
Find out whether any trade associations they belong to have taken a position on the VALID Act.
Clinical laboratory professionals should monitor the VALID Act’s progress while also paying attention to industry groups and manufacturers that support or oppose the bill.
Doing so will provide a clearer indication of who has the most to gain or lose should the legislation be passed. Pathologists and medical laboratory managers should also remain alert for further efforts by the FDA to issue proposed rulemaking to regulate LDTs.
As a deployable medical laboratory, the 1st AML is designed to run field-based clinical laboratory diagnostics and conduct health threat assessments
Clinical laboratory professionals may be surprised to learn that the US Army has a deployable medical laboratory that is equipped to perform the same menu of basic lab tests as their labs here in the United States, but in support of army units deployed in the field. At the same time, the Army’s deployable medical lab has the added responsibility of testing for infectious diseases and chemicals/agents that could be used by terrorists or enemy forces.
“The 1st Area Medical Laboratory identifies and evaluates health hazards through unique medical laboratory analyses and rapid health hazard assessments of nuclear, biological, chemical, endemic disease, occupational, and environmental health threats,” according to an Army new release.
A recent visit by the leaders of this lab unit to meet with their counterparts in Poland highlights the important diagnostic work the military prepares for by using this one-of-a-kind clinical laboratory model.
Col. Matthew Grieser (left), Commander of the 1st Area Medical Laboratory (AML) is shown above meeting with Col. Przemysław Makowski, MD, (right), Deputy Commander of the Military Preventive Medicine Center in Wrocław, Poland. Leaders from the US Army’s 1st AML visited military and medical officials in Poland. “It was a great opportunity to meet our Polish counterparts and to learn from one another,” said Grieser in an Army news release. “We intend to continue to strengthen this relationship … Poland is a great ally, and it was an honor to visit our counterpart organizations.” (Photo copyright: US Army.)
Role and Makeup of the 1st Area Medical Laboratory
The 1st AML traces its roots back to World War II, where it was one of 19 field laboratories spun up in 1944. It was deactivated after the Vietnam War and then reactivated in 2004. It is currently the Army’s only deployable field laboratory, according to the National Library of Medicine.
This specialized unit deploys worldwide to conduct threat detection and medical surveillance, according to the Army. For example, the military can send the 1st AML to locations where samples cannot quickly be transported to a fixed facility, or where there is a need for immediate hazard identification due to chemical or biological contamination or epidemic disease.
During the Ebola outbreak in Liberia in 2014-2015, the 1st AML operated four blood-testing laboratories and helped oversee two others manned by Navy personnel. The goal was to perform quick turnaround times to identify local residents who carried the disease, all while operating with extensive safety measures. More than 4,500 samples were tested during a six-month stay, Army Times reported.
Commanders from the 1st AML recently met with medical officials and chemical, biological, radiological, and nuclear experts from the Polish Armed Forces in the Warsaw area of Poland, the Army news release noted.
“It was a great opportunity to meet our Polish counterparts and to learn from one another,” said Col. Matthew Grieser, Commander of the 1st AML.
Maj. Suzanne Mate, the Chief of chemical threat assessment for the 1st AML, said meeting with allies helps to keep NATO ready for any contingency.
“It’s better to know your partners before you have to work together in a high-consequence situation,” said Mate in the Army news release. “We learned the strengths in different mobility platforms for laboratories and the capabilities within fixed scientific institutions to maintain standards and currency in chemical, biological, and radiological [CBR] investigations.
“This knowledge is invaluable when determining how to move a sample quickly and efficiently to characterize a suspected CBR threat when airlift resources are constrained or country treaties prevent movement activities,” she added.
Observant clinical laboratory managers will note similarities between their own jobs and those of the 1st AML. The military needs lab-based capabilities to perform a menu of diagnostic tests in support of Army units in the field and traditional clinical laboratories do the same in support of the healthcare providers they service.
Proposed regulation to limit rate increases during health crises gets pushback from staffing agencies and travel nurses who disagree with salary restrictions
Hospitals across the nation are seeking relief from skyrocketing costs due to increased demand for temporary workers—especially travel nurses. This has led organizations like the American Hospital Association (AHA) to step in and call for legislators to cap spiking salary rates. Many clinical laboratories report similar increases in salaries following the outbreak of SARS-CoV-2 for medical technologists (MTs), clinical laboratory scientists (CLSs), histologists, and other skilled positions. This increase in salaries of lab scientists was mirrored by an even greater increase in the cost of travel MTs.
According to analysis conducted by Becker’s Hospital Review of hiring data from Vivian Health, an online job placement website for healthcare professionals, “Average weekly travel nurse pay climbed from $1,896 in January 2020 to $3,782 in December 2021, a 99.47% increase.”
A prior study by Kaufman Hall and Associates, LLC., found rates for temporary workers almost 500% higher than pre-pandemic times. While numbers are trending downward, it’s clear that rates are still high enough to cause alarm, KFF Health News reported.
“During the pandemic there were staffing companies who were making a lot of promises and not necessarily delivering,” Dave Dillon (above), VP of Public and Media Relations at Missouri Hospital Association, told KFF Health News. “It created an opportunity for both profiteering and for bad actors to be able to play in that space.” (Photo copyright: L.G. Patterson/Missouri Hospital Association.)
AHA Alleges Price Gouging
Demand for temporary healthcare workers surged during the COVID-19 pandemic, and, because supply was limited, salaries for temporary workers—such as travel nurses—soared as well. This dramatic increase in hospitals’ costs prompted the AHA in 2021 to send a letter to the Federal Trade Commission seeking relief for healthcare providers from what the organization called “anticompetitive pricing by nurse-staffing agencies.”
In January 2022, about 200 House members urged then White House COVID-19 Response Team Coordinator Jeffrey Zients “to investigate reports that nurse staffing agencies are taking advantage of the COVID-19 pandemic to increase their profits at the expense of patients and the hospitals that treat them,” an AHA new release noted.
In an AHA House Statement titled, “Pandemic Profiteers: Legislation to Stop Corporate Price Gouging,” the AHA wrote “Our concerns range from potential collusion to increased prices way beyond competitive levels and/or egregious price gouging and the impact these behaviors could have on efforts to care for patients and communities.”
Temporary nurses make up a large portion of staff nationwide with 1,760,111 employed nationally as of September, according to Zippia research. With some nurses commandeering $40,000 signing bonuses and pay rates up to $10,000 a week for ICU nurses during the height of the COVID-19 pandemic, the significant impact of these rate hikes cannot be ignored.
“We have received reports that the nurse staffing agencies are vastly inflating price by two, three, or more times pre-pandemic rates, and then taking 40% or more of the amount being charged to the hospitals for themselves as profits. This situation is urgent and reliance on temporary workers caused normal staffing costs to balloon in all areas of the country,” Representatives Peter Welch, D-VT, and Morgan Griffith, R-VA, wrote in the letter submitted by the AHA to House members.
States Take a Stand
But nothing was done at the federal level to cap rates for travel nurses, so hospital organizations in 14 states lobbied legislators to cap rates at the local level. However, this has proven to be problematic.
At this time, at least 14 states have proposed legislation that impose limits on what temp nursing services can charge and what stipulations they must follow during a crisis. Navigating this patchwork of state laws could be challenging for both hospitals and temporary nurses.
Some states are taking sterner measures, KFF Health News reported:
Missouri regulators proposed legislation that would allow felony charges to be brought against healthcare staffing agencies that raise prices during emergencies.
Texas lawmakers proposed legislation that would administer civil penalties against agency price-gouging—laws which the state does not have on the books at all—and also would allow fees up to $10,000 to be assessed per violation of the proposed law.
New York proposed amendments to legislation that would cap the amount temporary staffing agencies could charge.
Nurses, Staffing Agencies Tell Their Side
The implementation of new laws to protect hospitals from alleged temp agency price gouging presents new challenges. One issue is state-to-state competition.
“It might become difficult to hire travel nurses, and some states could face a lower-quality hiring pool during a national crises if the neighboring state doesn’t have strict measures,” Hannah Neprash, PhD, Assistant Professor, Division of Health Policy and Management at the University of Minnesota, told KFF Health News.
And financial handcuffs may not sit well with staffing agencies that feel misunderstood by hospital organizations pushing for regulation. According to KFF Health News, “Typically about 75% of the price charged by a staffing agency to a healthcare facility goes to costs such as salary, payroll taxes, workers’ compensation programs, unemployment insurance, recruiting, training, certification, and credential verification, said Toby Malara, a Vice President at the American Staffing Association trade group.”
Malara added, “hospital executives have, ‘without understanding how a staffing firm works,’ wrongly assumed price gouging has been occurring. In fact, he said many of his trade group’s members reported decreased profits during the pandemic because of the high compensation nurses were able to command,” KFF Health News reported.
Not surprisingly, many nurses have also come out against government regulation of their wages.
“Imagine the government attempting to dictate how much a lawyer, electrician, or plumber would make in Missouri. This would never be allowed, yet this is exactly what’s happening right now to nurses,” Theresa Newbanks, FNP, a nurse practitioner who is affiliated with several hospitals in multiple states.
Creative Responses Required
Increases in both rates and legislation continue to spur creativity among hospitals needing to fill shifts, support staff, and prevent worker burnout.
The American Hospital Association December 2022 Task Force noted this in their “Creative Staffing Models” paper. The AHA cited telehealth visits, technical support, and working with non-traditional partners as beneficial ideas. These were also noted as meaningful ways to recruit and retain staff.
Other hospital systems have even created their own staffing agencies. Allegheny Health Network (AHN) developed a variety of systems where nurses can work a single weeklong assignment, multiple-week assignments, or transfer to other facilities, Kaiser Health News reported. While these staffing scenarios make up a small percentage of the hospital staff, it’s a worthwhile addition to increase options for nurses.
Staff turnover for RNs increased from 8.4% to 27.1% last year, as reported by the 2022 NSI National Healthcare Retention and RN Staffing Report. Finding solutions to staffing shortages—and consequently increased temporary nursing cost—is crucial because burnout is still a problem, just as it is in clinical laboratories and pathology groups.
Understanding why some people display no symptoms during a COVID-19 infection could lead to new precision medicine genetic tests medical labs could use to identify people with the mutated gene
New research from the University of California San Francisco (UCSF) may explain why some people could get COVID-19 but never test positive on a clinical laboratory test or develop symptoms despite exposure to the SARS-CoV-2 coronavirus.
According to the UCSF study, variations in a specific gene in a system of genes responsible for regulating the human immune system appears to be the factor in why about 10% of those who become infected with the virus are asymptomatic.
These scientific insights did not receive widespread news coverage but will be of interest to clinical laboratory managers and pathologists who oversee SARS-CoV-2 testing in their labs.
“Some people just don’t have symptoms at all,” Jill Hollenbach, PhD (above), Professor of Neurology atUCSF’s Weill Institute for Neurosciences and lead researcher in the study, told NBC News. “There’s something happening at a really fundamental level in the immune response that is helping those people to just completely wipe out this infection.” Identifying a genetic reason why some people are asymptomatic could lead to new precision medicine clinical laboratory diagnostics for COVID-19. (Photo copyright: Elena Zhukova /University of California San Francisco.)
Fortunate Gene Mutation
According to the Centers for Disease Control and Prevention’s (CDC) COVID Data Tracker, as of April 5, 2023, a total of 104,242,889 COVID-19 cases have been reported in the United States. However, according to a CDC Morbidity and Mortality Weekly Report (MMWR), “Traditional methods of disease surveillance do not capture all COVID-19 cases because some are asymptomatic, not diagnosed, or not reported; therefore, [knowing the true] proportion of the population with SARS-CoV-2 antibodies (i.e., seroprevalence) can improve understanding of population-level incidence of COVID-19.”
She also participates in the COVID-19 HLA and Immunogenetics Consortium, a group of academic researchers, clinical laboratory directors, journal editors, and others who examine the role of HLA variations in determining COVID-19 risk.
Hollenbach’s research identified an HLA variant—known as HLA-B*15:01—that causes the human immune system to react quickly to SARS-CoV-2 and “basically nuke the infection before you even start to have symptoms,” she told NPR.
“It’s definitely luck,” she added. “But, you know, this [gene] mutation is quite common. We estimate that maybe one in 10 people have it. And in people who are asymptomatic, that rises to one in five.”
“HLA variants are among the strongest reported associations with viral infections,” the UCSF study notes. So, the researchers theorized that HLA variations play a role in asymptomatic SARS-CoV-2 infections as well.
To conduct their study, shortly after the SARS-CoV-2 outbreak in 2020, the researchers recruited approximately 30,000 volunteer bone marrow donors from the National Marrow Donor Program to respond to periodic questions via a smartphone app or website. Because HLA variations can determine appropriate matches between donors and recipients, the database includes information about their HLA types.
Each week, respondents were asked to report if they had been tested for SARS-CoV-2. Each day, they were asked to report whether they had symptoms associated with COVID-19. “We were pretty stringent in our definition of asymptomatic,” Hollenbach told NBC News. “[The respondents couldn’t] even have a scratchy throat.”
The researchers eventually identified a cohort of 1,428 people who had tested positive for SARS-CoV-2 between February 2020 and April 30, 2021, before vaccines were widely available. Among these individuals, 136 reported no symptoms for two weeks before or two weeks after a positive test.
“Overall, one in five individuals (20%) who remained asymptomatic after infection carried HLA-B*15:01, compared to 9% among patients reporting symptoms,” the researchers wrote in their medRxiv preprint. Study participants with two copies of the gene were more than eight times more likely to be asymptomatic.
The UCSF researchers also looked at four other HLA variants and found none to be “significantly associated” with lack of symptoms. They confirmed their findings by reproducing the HLA-B association in two additional independent cohorts, one from an earlier study in the UK and the other consisting of San Francisco-area residents.
Individuals in the latter group had either tested positive for SARS-CoV-2 or reported COVID symptoms, and their DNA was analyzed to determine their HLA types.
Pre-existing T-Cell Immunity May Reduce Severity of COVID-19 Infection
The UCSF researchers also attempted to determine how HLA-B*15:01 plays a role in knocking out SARS-CoV-2 infections. They noted previous research that indicated previous exposure to seasonal coronaviruses, such as common cold viruses, could limit the severity of COVID-19. The scientists hypothesized that pre-existing T-cell immunity in HLA-B carriers may be the key.
The COVID-19 HLA and Immunogenetics Consortium website describes how HLA and T-cells work together to ward off disease. HLA “proteins are found on the surface of all cells except red-blood cells.” They’re “like windows into the inner workings of a cell,” and T-cells use the molecules to determine the presence of foreign proteins that are likely signs of infection. “Activated T-cells can kill infected cells, or activate B-cells, which produce antibodies in response to an infection,” the website explains.
Hollenbach’s research team analyzed T-cells from pre-pandemic individuals and observed that in more than half of HLA-B carriers, the T-cells were reactive to a SARS-CoV-2 peptide. The scientists corroborated the hypothesis by examining crystal structures of the HLA-B*15:01 molecule in the presence of coronavirus spike peptides from SARS-CoV-2 and two other human coronaviruses: OC43-CoV and HKU1-CoV.
“Altogether, our results strongly support the hypothesis that HLA-B*15:01 mediates asymptomatic COVID-19 disease via pre-existing T-cell immunity due to previous exposure to HKU1-CoV and OC43-CoV,” the researchers wrote.
Can Genes Prevent COVID-19 Infections?
Meanwhile, researchers at The Rockefeller University in New York City are attempting to go further and see if there are mutations that prevent people from getting infected in the first place. NPR reported that they were seeking participants for a study seeking to identify so-called “superdodger” genes.
Study participants identified as possibly having superdodger genes receive a kit designed to collect saliva samples, after which the researchers sequence the respondents’ genomes. “We hope that in a group of 2,000 to 4,000 people, some people will have genetic mutations that tell us why they’re resistant to infection,” Casanova told NPR.
All this genetic research is in very early stages. But results are promising and may lead to new precision medicine clinical laboratory tests for identifying people who are predisposed to having an asymptomatic response to COVID-19 infection. That in turn could help scientists learn how to moderate or even eliminate symptoms in those unfortunate people who suffer the typical symptoms of the disease.
