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Common DNA Testing Method Using SNP Chips Struggles to Find Rare Variants Associated with BRCA Test, UK Researchers Find

Results of the UK study confirm for clinical laboratory professionals the importance of fully understanding the design and function of SNP chips they may be using in their labs

Here is another example of a long-established clinical laboratory test that—upon new evidence—turns out to be not as accurate as once thought. According to research conducted at the University of Exeter in Devon, UK, Single-nucleotide polymorphism (SNP) chips (aka, SNP microarrays)—technology commonly used in commercial genetic testing—is inadequate at detecting rare gene variants that can increase breast cancer risk.  

A news release announcing the results of the large-scale study states, “A technology that is widely used by commercial genetic testing companies is ‘extremely unreliable’ in detecting very rare variants, meaning results suggesting individuals carry rare disease-causing genetic variants are usually wrong.”

Why is this a significant finding for clinical laboratories? Because medical laboratories performing genetic tests that use SNP chips should be aware that rare genetic variants—which are clinically relevant to a patient’s case—may not be detected and/or reported by the tests they are running.

UK Researchers Find ‘Shockingly High False Positives’

The objective of the Exeter study published in British Medical Journal (BMJ), titled, “Use of SNP Chips to Detect Rare Pathogenic Variants: Retrospective, Population Based Diagnostic Evaluation,” was “To determine whether the sensitivity and specificity of SNP chips are adequate for detecting rare pathogenic variants in a clinically unselected population.”

The conclusion reached by the Exeter researchers, the BMJ study states, is that “SNP chips are extremely unreliable for genotyping very rare pathogenic variants and should not be used to guide health decisions without validation.”  

Leigh Jackson, PhD, Lecturer in Genomic Medicine at University of Exeter and co-author of the BMJ study, said in the news release, “The number of false positives on rare genetic variants produced by SNP chips was shockingly high. To be clear: a very rare, disease-causing variant detected using [an] SNP chip is more likely to be wrong than right.” 

Caroline Wright, PhD, Professor in Genomic Medicine at the University of Exeter Medical School
In the news release, Caroline Wright, PhD (above), Professor in Genomic Medicine at the University of Exeter Medical School and senior author of the BMJ study, said, “SNP chips are fantastic at detecting common genetic variants, yet we have to recognize that tests that perform well in one scenario are not necessarily applicable to others.” She added, “We’ve confirmed that SNP chips are extremely poor at detecting very rare disease-causing genetic variants, often giving false positive results that can have profound clinical impact. These false results had been used to schedule invasive medical procedures that were both unnecessary and unwarranted.” (Photo copyright: University of Exeter.)

Large-Scale Study Taps UK Biobank Data

The Exeter researchers were concerned about cases of unnecessary invasive medical procedures being scheduled by women after learning of rare genetic variations in BRCA1 (breast cancer type 1) and BRCA2 (breast cancer 2) tests.

“The inherent technical limitation of SNP chips for correctly detecting rare genetic variants is further exacerbated when the variants themselves are linked to very rare diseases. As with any diagnostic test, the positive predictive value for low prevalence conditions will necessarily be low in most individuals. For pathogenic BRCA variants in the UK Biobank, the SNP chips had an extremely low positive predictive value (1-17%) when compared with sequencing. Were these results to be fed back to individuals, the clinical implications would be profound. Women with a positive BRCA result face a lifetime of additional screening and potentially prophylactic surgery that is unwarranted in the case of a false positive result,” they wrote.

Using UK Biobank data from 49,908 participants (55% were female), the researchers compared next-generation sequencing (NGS) to SNP chip genotyping. They found that SNP chips—which test genetic variation at hundreds-of-thousands of specific locations across the genome—performed well when compared to NGS for common variants, such as those related to type 2 diabetes and ancestry assessment, the study noted.

“Because SNP chips are such a widely used and high-performing assay for common genetic variants, we were also surprised that the differing performance of SNP chips for detecting rare variants was not well appreciated in the wider research or medical communities. Luckily, we had recently received both SNP chip and genome-wide DNA sequencing data on 50,000 individuals through the UK Biobank—a population cohort of adult volunteers from across the UK. This large dataset allowed us to systematically investigate the performance of SNP chips across millions of genetic variants with a wide range of frequencies, down to those present in fewer than 1 in 50,000 individuals,” wrote Wright and Associate Professor of Bioinformatics and Human Genetics at Exeter, Michael Weedon, PhD, in a BMJ blog post.

The Exeter researchers also analyzed data from a small group of people in the Personal Genome Project who had both SNP genotyping and sequencing information available. They focused their analysis on rare pathogenic variants in BRCA1 and BRCA2 genes.

The researchers found:

  • The rarer the variant, the less reliable the test result. For example, for “very rare variants” in less than one in 100,000 people, 84% found by SNP chips were false positives.
  • Low positive predictive values of about 16% for very rare variants in the UK Biobank.
  • Nearly all (20 of 21) customers of commercial genetic testing had at least one false positive rare disease-causing variant incorrectly genotyped.
  • SNP chips detect common genetic variants “extremely well.”

Advantages and Capabilities of SNP Chips

Compared to next-gen genetic sequencing, SNP chips are less costly. The chips use “grids of hundreds of thousands of beads that react to specific gene variants by glowing in different colors,” New Scientist explained.

Common variants of BRCA1 and BRCA2 can be found using SNP chips with 99% accuracy, New Scientist reported based on study data.

However, when the task is to find thousands of rare variants in BRCA1 and BRCA2 genes, SNP chips do not fare so well.

“It is just not the right technology for the job when it comes to rare variants. They’re excellent for the common variants that are present in lots of people. But the rarer the variant is, the less likely they are to be able to correctly detect it,” Wright told CNN.

SNP chips can’t detect all variants because they struggle to cluster needed data, the Exeter researchers explained.

“SNP chips perform poorly for genotyping rare genetic variants owing to their reliance on data clustering. Clustering data from multiple individuals with similar genotypes works very well when variants are common,” the researchers wrote. “Clustering becomes more difficult as the number of people with a particular genotype decreases.”

Clinical laboratories Using SNP Chips

The researchers at Exeter unveiled important information that pathologists and medical laboratory professionals will want to understand and monitor. Cancer patients with rare genetic variants may not be diagnosed accurately because SNP chips were not designed to identify specific genetic variants. Those patients may need additional testing to validate diagnoses and prevent harm.

—Donna Marie Pocius

Related Information:

Large-scale Study Finds Genetic Testing Technology Falsely Detects Very Rare Variants

Use of SNP Chips to Detect Rare Pathogenic Variants: Retrospective, Population-Based Diagnostic Evaluation

The Home DNA Kits “Falsely Warning of High Risk of Cancer”: DIY Genetic Tests are “Extremely Unreliable” at Detecting Rare Genetic Variants, Major New Study Warns

SNP Chips Perform Poorly for Detecting Rare Genetic Variants

Chip-based DNA Testing Wrong More than Right for Very Rare Variants

Common Genetic Tests Often Wrong When Identifying Rare Disease-Causing Variants Such as BRCA1and BRCA2, Study Says

Apple’s $10 Million Grant Helps COPAN Diagnostics Increase Production of COVID-19 Sample Collection and Transport Products by 4,000%

This is one more example of how Silicon Valley companies are lining up collaborations with in vitro diagnostics companies to gain a foothold in the clinical laboratory marketplace

For years, Apple, Google, and other Silicon Valley companies have taken progressive steps to become more engaged in healthcare. One recent example of a Silicon Valley company willing to invest in clinical laboratory testing came last year in the form of a $10 million grant Apple (NASDAQ:AAPL) made to COPAN Diagnostics of Murrieta, Calif., to increase the speed and production of the company’s COVID-19 sample collection and transport products.

The interesting aspect of this collaboration was that Apple’s primary role was to help COPAN:

  • streamline workflow and speed of throughput,
  • help with the incoming supply chain, and
  • help develop outgoing supply chain solutions—along with some capital investment.

From the start of the pandemic in the winter of 2020, SARS-CoV-2 sample collection kits were one of many items that were in short supply here in the United States. To help address those shortfalls, teams at Apple, COPAN, and multiple other companies across the US worked to improve the work processes, automation, and machinery COPAN uses in its manufacturing and production sites. This collaboration increased production by nearly 4,000%  between April 2020 and February 2021, an Apple news release reported.

Jeff Williams  Apple’s Chief Operating Officer in a blue shirt on a stage
In the news release, Jeff Williams (above), Apple’s Chief Operating Officer, said, “We are proud our Advanced Manufacturing Fund is supporting companies like COPAN who are playing a critical role in the fight against COVID-19 and assisting healthcare professionals and communities across the country. This collaboration helped produce, ship, and deliver millions of sample collection kits to hospitals from coast to coast—and we believe it is this unique combination of American manufacturing and innovation that will help us emerge from this crisis and build a safer world for us all.” (Photo copyright: Apple Insider.)

Healthcare Has Long Been a Target for Big Tech

Investment in different sectors of the US healthcare system by one of the Big Tech companies is not unusual. Apple, Google, Amazon, and Microsoft have looked for ways to expand their respective footholds in the healthcare marketplace for years.

In “How the ‘Big 4’ Tech Companies Are Leading Healthcare Innovation”—published a full year before the COVID-19 pandemic began—Healthcare Weekly noted that, “At a high level, each of the ‘Big 4’ tech companies are leveraging their own core business strengths to reinvent healthcare by developing and collaborating on new tools for patients, care providers, and insurers that will position them for healthcare domination.”

In 2017, Apple announced the launch of the Advanced Manufacturing Fund, saying that the $1 billion fund was a way to give back to communities through job creation. “By doing that, we can be the ripple in the pond. Because if we can create many manufacturing jobs around, those manufacturing jobs create more jobs around them because you have a service industry that builds up around them,” Apple’s CEO Tim Cook told CNBC at that time.

In 2018, Apple boosted the fund from $1 billion to $5 billion, the Mac Observer reported.

Apple’s $10 million investment enabled COPAN Diagnostics to expand into a new facility as well as hire 250 new employees. “We are proud our Advanced Manufacturing Fund is supporting companies like COPAN who are playing a critical role in the fight against COVID-19 and assisting healthcare professionals and communities across the country,” Williams said in the news release.

COPAN and the On-Going Need for COVID-19 Test Kits

COPAN Diagnostics was founded in 1979 in Mantua, Italy, and is now a global force in the manufacture of many sample collection and transport products such as instruments, automation, swabs, pipettes, and, of course, SARS-CoV-2 sample collection and transport kits. At the time of Apple’s investment, COPAN was producing sample collection and transport products at its Murrieta, Calif., facility. But demand for these products far outweighed the supply.

In an interview, Norman Sharples, CEO of COPAN Diagnostics and head of operations for North and South America, said he was hoping to increase production in the earliest days of the pandemic when Jeff Williams, COO at Apple, contacted him regarding the Advanced Manufacturing Fund. Along with the $10 million grant, Williams offered experts in engineering and sourcing to help COPAN increase production, the San Diego Union-Tribune reported.

The result was a new manufacturing facility in Carlsbad, Calif., which increased COPAN’S production of its sample collection and transport products used in SARS-CoV-2 testing by nearly 4,000%.

“From taking the keys to the building to actually getting the California department for public inspection, which allows us to go live and sell the product, that was just over 30 days, which is an incredible campaign that Apple helped us with,” Sharples told the San Diego Union-Tribune, adding, “It wasn’t just the funding. It was [the experts from Apple] applying their know-how and expertise to tilt this up very fast.”

Even as COVID-19 vaccines roll out, demand for SARS-CoV-2 tests—along with the necessary specimen collection and transport supplies—will likely continue. As the economy reopens, workers return to offices, and students return to in-person schools, precautionary screening for COVID-19 will remain necessary. “I think demand is going to flatten a little bit, but in any case, the baseline is going to be high because of surveillance,” Sharples said. “The back-to-work programs will drive more surveillance.”

Pandemic Increases Big Tech’s Dominance in Healthcare

Where many businesses and entire industries struggled with the pandemic, Big Tech apparently did not. In late October 2020, CBS News reported, “America’s largest technology companies are thriving despite the economy’s woes, according to earnings posted by Google-parent Alphabet, Amazon, Apple, Facebook, and Twitter on Thursday.”

Along with growing profits, Big Tech companies also consolidated their dominance. “As the pandemic made us even more dependent on digital technology, it has made the systemic importance and enormous power of the tech giants even more apparent,” according to an article in SciencesPo, titled, “Is the COVID-19 Pandemic a Victory for Big Tech?

Might Big Tech Investments Target Clinical Laboratory Testing?

There’s no reason to believe that the big technology companies will slow their investment in healthcare anytime soon, and that investment may benefit clinical laboratories. In fact, in “11 Recent Big Tech Partnerships in Healthcare,” Becker’s Hospital Review listed several technology companies that will likely affect pathology laboratories.

Big Tech investment in genetic testing, artificial intelligence, telehealth, and other technologies may alter how clinical laboratories operate and revolutionize the healthcare industry. 

—Dava Stewart

Related Information:

Apple’s Advanced Manufacturing Fund Helps COPAN Diagnostics Ship Millions of COVID-19 Test Kits

Apple Awards $10 Million from Advanced Manufacturing Fund to COPAN Diagnostics

Apple Helps Develop COVID-19 Test Kits; Boosted Output by 4,000%

How the “Big 4” Tech Companies Are Leading Healthcare Innovation

Apple Just Promised to Give US Manufacturing a $1 Billion Boost

With Apple’s Help, COPAN Diagnostics Ships Millions of COVID Sample Collection

Kits from New Carlsbad Factory

Big Tech Companies, Fully Recovered from Pandemic, Report Record Earnings

Is the COVID-19 Pandemic a Victory for Big Tech?

11 Recent Big Tech Partnerships in Healthcare

Consumer Reports Identifies ‘Potential Pitfalls’ of Direct-to-Consumer Genetic Tests

At-home genetic test kits face scrutiny for providing information that may provide consumers with an incomplete picture of their genetic health risks and ancestry

Genetic testing for disease risk and heritage are hugely popular. But though clinical laboratory and pathology professionals understand the difference between a doctor-ordered genetic health risk (GHR) test and a direct-to-consumer (DTC) genetic test, the typical genetic test customer may not. And misunderstanding the results of a DTC at-home genetic test can lead to confusion, loss of privacy, and potential harm, according to Consumer Reports.

To help educate consumers about the “potential pitfalls” of at-home DTC testing kits offered by companies such as Ancestry and 23andMe, Consumer Reports has published an article, titled, “Read This Before You Buy a Genetic Testing Kit.” The article covers “four common claims from the manufacturers of these products, whether they deliver, and what to know about their potential pitfalls.”

Are Genetic Ancestry Tests Accurate?

Ancestry and 23andMe are the DTC genetic test industry leaders, with databases of genetic information about 18 million individuals and 10 million individuals respectively. According to a Consumer Reports survey, as of October 2020 about one in five Americans had taken a DTC genetic test. Reported reasons for doing so included:

  • 66% of respondents wanted to learn more about their ancestry.
  • 20% wanted to locate relatives.
  • 18% wanted to learn more about their health.
  • 11% wanted to learn if they have or are a carrier for any medical conditions.
  • 3% wanted to get a medical test they could not get through their doctor.
Wendy Roth, PhD headshot
Though DTC genetic tests remain popular, Consumer Reports is now warning consumers to view the genealogical or medical insights gleaned through these tests with caution. “If you go in there thinking that this test is going to tell you who you are, you’re going to be wrong,” Wendy Roth, PhD (above), Associate Professor of Sociology at the University of Pennsylvania, told the publication. (Photo copyright: University of Pennsylvania.)

As Consumer Reports notes, doctor-ordered genetic health risk (GHR) testing typically aims to answer a specific question about a patient’s risk for a certain disease. DTC at-home genetic testing, on the other hand, examines a “whole range of variants that have been linked—sometimes quite loosely—to a number of traits, some not related to your health at all.

“Think of it this way: When your doctor orders genetic testing, it’s akin to fishing for a particular fish, in a part of the ocean where it’s known to live,” Consumer Reports noted, “A DTC test is more like throwing a net into the ocean and seeing what comes back.”

In its article, Consumer Reports addressed four common DTC genetic test claims:

  • The Tests Can Find Far-Flung Relatives: While the tests can unearth people in its database whom you might be related to, 9% of respondents in the Consumer Reports survey discovered unsettling information about a relative.
  • Testing Can Uncover Where Your Ancestors Are From: Genetic tests may show the percentage of your DNA that comes from Europe or Asia or Africa, but accuracy depends on how many DNA samples a company has from a particular region. As genetic test manufacturers’ reference databases widen, a customer’s genetic ancestry test results can “change over time.” Also, finding a particular variation in genetic code does not definitively place someone in a specific region, or ethnic or racial group.
  • Genetic Tests Can Reveal Your Risk for Certain Diseases: Testing companies such as 23andMe are authorized by the Food and Drug Administration (FDA) to offer physician-mediated tests, which are analyzed in a federally-certified clinical laboratory. However, test results may provide a false sense of security because DTC tests look for only select variants known to cause disease.
  • The Tests Can Tell What Diet Is Best for You: Incorporating genetic information into diet advice has the potential to be transformative, but the science is not yet there to offer personalized nutritional advice.

Consumer Reports pointed to a 2020 study published in the MDPI journal Nutrients, titled, “Direct-to-Consumer Nutrigenetics Testing: An Overview,” which evaluated 45 DTC companies offering nutrigenetics testing and found a need for “specific guidelines” and “minimum quality standards” for the services offered. For example, the study authors noted that more than 900 genetic variants contribute to obesity risk. However, weight-loss advice from DTC test companies was based on a “limited set of genetic markers.”

In the Consumer Reports article, Mwenza Blell, PhD, a biosocial medical anthropologist and Rutherford Fellow and NUAcT Fellow at Newcastle University in the United Kingdom, said “genetic ancestry tests are closer to palm reading than science.”

GHR Test Results Also Can Produce Confusion

In an article, titled, “The Problem with Direct-to-Consumer Genetic Tests,” Scientific American reviewed consumer-grade GHR products and came to similar conclusions regarding health-based assessments. The article’s author, oncologist Heather Cheng, MD, PhD, Director of the Prostate Cancer Genetics Clinic at the

Seattle Cancer Care Alliance and an Associate Professor of Oncology at the University of Washington, fears consumers “miss important limitations on a test’s scope” or “misunderstand critical nuances in the results.”

Cheng says the ability to use flexible or health savings accounts (HSAs) to cover the cost of 23andMe’s GHR assessments, as well as the FDA’s approval of 23andMe’s Personal Genome Service Pharmacogenetic Reports test on medication metabolism, may have added to the confusion.

“This may further mislead people into thinking these tests are clinically sound. Again, they are not,” Cheng wrote.

As an oncologist, Cheng is particularly concerned about consumer GHR testing for heritable cancer risk, which screen for only a handful of genetic variants.

“The results are inadequate for most people at high risk of cancers associated with inherited mutations in BRCA1 or BRCA2 genes, including families whose members have experienced ovarian cancer, male breast cancer, multiple early breast cancers, pancreatic cancer, or prostate cancer,” Cheng wrote. “Put simply, this recreational test has zero value for the majority of people who may need it for true medical purposes.”

DTC genetic health-risk assessments may one day lead to consumers collecting samples at home for tests that aid in the diagnosis of disease. In the meantime, clinical laboratory professionals can play a role in educating the public about the limitations of current DTC genetic test offerings.

—Andrea Downing Peck

Related Information:

The Problem with Direct-to-Consumer Genetic Tests

Read This Before You Buy A Genetic Testing Kit

Ancestry Pulling Health Data DNA Test Just a Year After Launch

Home Genetic Testing: A Nationally Representative Multi-Mode Survey

Direct-to-Consumer Nutrigenetics Testing: An Overview

FDA Authorizes First Direct to Consumer Test for Detecting Genetic Variants that May Be Associated with Medication Metabolism

23andMe Granted the First and Only FDA Authorization for Direct-to-Consumer Pharmacogenetics Reports

Discontinuation of AncestryHealth

During Pandemic, Clinical Laboratories Should Be Alert for Drug Resistant Infections That Pose High Risk to COVID-19 Patients

On top of everything else during this pandemic, drug-resistant infections are threatening the most vulnerable patients in COVID-19 ICUs

New study by researchers at the University of Minnesota highlights the continuing need for microbiologists and clinical laboratories to stay alert for COVID-19 patients with drug-resistant infections. In their study, researchers highlighted CDC statistics about the number of Candida auris (C. auris) infections reported in the United States during 2020, for example.

In a paper, titled, “Three Cases of Worrisome Pan-Resistant C Auris Found in New York,” the Center for Infectious Disease Research and Policy (CIDRAP) at the University of Minnesota reported that “As of Dec 11, the CDC said 941 confirmed and probable C. auris cases have been reported in 13 states, and an additional 1,830 patients have been found to be colonized with the multidrug-resistant fungus. Most of the cases have been detected in the New York City area, New Jersey, and the Chicago area.”

Candida auris is a particularly nasty fungus. It spreads easily, is difficult to remove from surfaces, and can kill. Worst of all, modern drugs designed to combat this potentially deadly fungus are becoming less effective at eradicating it, and COVID-19 ICU patients appear especially vulnerable to C. auris infections.

In “Potentially Fatal Fungus Invades Hospitals and Public Is Not Informed,” Dark Daily reported how Candida auris’ ability to elude detection makes decontamination of hospital rooms far more complicated. And in “CDC Ranks Two More Drug-Resistant Microbes as ‘Urgent Threat’ to Americans; Clinical Laboratories Are Advised to Increase Awareness of Antimicrobial Resistance,” we covered how the federal Centers for Disease Control and Prevention (CDC) added C. auris to its “Biggest Threats and Data: Antibiotic Resistance Threats in the United States” report for 2019.

COVID-19 and C. auris a Potentially Devastating Combination

Hospitals in many areas are at a critical capacity. Thus, hospital-acquired infections such as sepsis can be particularly dangerous for COVID-19 patients. Adding to the problem, C. auris requires special equipment to identify, and standard medical laboratory methods are not always enough. Misidentification is possible, even probable.

A paper in the Journal of Global Antimicrobial Resistance (JGAR), titled, “The Lurking Scourge of Multidrug Resistant Candida Auris in Times of COVID-19 Pandemic,” notes that “A particularly disturbing feature of COVID-19 patients is their tendency to develop acute respiratory distress syndrome that requires ICU admission, mechanical ventilation, and/or extracorporeal membrane oxygenation. … This haunting facet of COVID-19 pandemic has severely challenged even the most advanced hospital settings. Yet one potential confounder, not in the immediate attention of most healthcare professionals, is the secondary transmission of multidrug resistant organisms like the fungus Candida auris in COVID-19 ICUs. … C. auris outbreaks occur in critically ill hospitalized patients and can result in mortalities rates ranging from 30% to 72%. … Both C. auris and SARS-CoV-2 have been found on hospital surfaces including on bedrails, IV poles, beds, air conditioner ducts, windows and hospital floors. Therefore, the standard COVID-19 critical care of mechanical ventilation and protracted ventilator-assisted management makes these patients potentially susceptible to colonization and infections by C. auris.”

One study mentioned in the JGAR paper conducted in New Delhi, India, looked at 596 cases where patients were admitted to the ICU with COVID-19. Fifteen of them had infections caused by C. auris. Eight of those patients died. “Of note, four patients who died experienced persistent fungemia and despite five days of micafungin therapy, C. auris again grew in blood culture,” according to reporting on the study in Infection Control Today (ICT).

Some C. auris mortality rates are as high as 72%. And patients with weakened immune systems are at particular risk, “making it an even more serious concern when 8% to 9% of roughly 530,000 ICU patients in the United States have COVID-19,” ICT reported.

Apparently, the COVID-19 pandemic has created circumstances that are particularly suited for C. auris to spread. “Given the nosocomial transmission of SARS-CoV-2 by those infected, many hospital environments may serve as venues for C. auris transmission as it is a known environmental colonizer of ICUs,” wrote the JGAR paper authors.

CDC Reports and Recommendations

Along with being especially dangerous for people with weakened immune systems, C. auris infections also produce symptoms similar to those of COVID-19, “including fever, cough, and shortness of breath,” according to the CDC’s website. People admitted to ICUs with COVID-19 are especially vulnerable to bacterial and fungal co-infections. “These fungal co-infections are reported with increasing frequency and can be associated with severe illness and death,” says the CDC.

C. auris outbreaks in the United States have mostly been in long-term care facilities, but the pandemic seems to be changing that and more outbreaks have been detected in acute care facilities, the CDC reported. The lack of appropriate personal protective equipment (PPE), changes in infection control routines, and other factors could be to blame for the increase.

Just as community spread is an issue with COVID-19 variants, so too is it a concern with C. auris infections. “New C. auris cases without links to known cases or healthcare abroad have been identified recently in multiple states, suggesting an increase in undetected transmission,” the CDC noted.

As of January 19, 2021, according to the CDC the case count of C. auris infections in the US was 1,625, with California, Florida, Illinois, New Jersey, and New York having more than 100 cases each.

According to a CDC report, “Candida auris (C. auris) is an emerging multidrug-resistant yeast (a type of fungus). It can cause severe infections and spreads easily between hospitalized patients and nursing home residents.” The graphic above, taken from the report, illustrates how “C. auris began spreading in the United States in 2015. Reported cases increased 318% in 2018 when compared to the average number of cases reported in 2015 to 2017.” (Graphic copyright: Centers for Disease Control and Prevention.)

Using Clinical Laboratory Tests to Identify C. Auris

One of the big concerns about C. auris is that it is so difficult to detect, and that medical laboratories in some countries simply do not have the technology and resources to identify and tackle the infection.

“As C. auris diagnostics in resource-limited countries is yet another challenge, we feel that alerting the global medical community about the potential of C. auris as a confounding factor in COVID-19 is a necessity,” wrote the authors of the paper published in the Journal of Global Antimicrobial Resistance.

As if the COVID-19 pandemic has not been enough, drug resistant bacteria, viruses, and deadly fungi are threatening to wreak havoc among SARS-CoV-2 infected patients. Microbiologists and medical laboratory scientists know that testing for all types of infections is vitally important, but especially when it comes to infections caused by antibiotic-resistant bacteria (ARB) and other dangerous organisms that demonstrate antimicrobial resistance (AMR).

Microbiologists and clinical laboratory professionals will want to stay informed about the number of C. auris cases identified in the US and the locations and settings where the fungus was detected. They will want to be on the alert within their hospitals and health networks, as well as with the doctor’s offices served by their labs.

—Dava Stewart

Related Information:

Potentially Fatal Fungus Invades Hospitals and Public Is Not Informed

CDC Ranks Two More Drug-Resistant Microbes as ‘Urgent Threat to Americans; Clinical Laboratories Are Advised to Increase Awareness of Antimicrobial Resistance:

Biggest Threats and Data: Antibiotic Resistance Threats in the United States report for 2019

Three Cases of Worrisome Pan-Resistant C auris Found in New York

COVID Unleashes the ‘Lurking Scourge’ Candida Auris

The Lurking Scourge of Multidrug Resistant Candida auris in Times of COVID-19 Pandemic

CDC: Fungal Diseases and COVID-19

CDC: Candida auris

Families Are Choosing Home Healthcare Over Nursing Home Placements for Elderly Relatives Because of COVID-19

Occupancy rates at skilled nursing facilities remain well below pre-pandemic levels, a trend that weakens the financial health of nursing homes and means fewer test referrals to clinical laboratories that service them

COVID-19 is taking a financial bite out of the nursing home industry as seniors opt for home care rather than entering nursing facilities. If this trend becomes permanent, clinical laboratories may have to ramp up their ability to collect specimens from a growing population of patients who choose non-traditional healthcare settings. And as the SARS-CoV-2 pandemic stretches on, the exodus of seniors from nursing home facilities provides another example of how COVID-19 is altering consumers’ access to healthcare.

According to the most recent “AARP Nursing Home COVID-19 Dashboard Fact Sheets,” the COVID-19 pandemic “has swept the nation, killing more than 160,000 residents and staff of nursing homes and other long-term care facilities.”

Because COVID-19 has hit nursing home residents the hardest, many families have decided elderly parents may be safer living with relatives than in nursing homes that have proven vulnerable to widespread outbreaks. In addition, COVID-19-related lockdowns in skilled nursing facilities (SNFs) have provided families with additional motivation to choose home care for elderly relatives. 

For example, in “Should You Bring Mom Home from Assisted Living During the Pandemic?” retired Seattle physician Alison Webb, MD, told Kaiser Health News (KHN) she moved her 81-year-old father, who has moderate dementia, out of assisted living so he could be with grandchildren and enjoy gardening rather than remain in his senior facility, where COVID-19 protocols kept him sequestered from friends and family.

This is not an isolated example and may have a long-term impact on clinical laboratories that service skilled nursing facilities.

Patient Volume Falls Dramatically at Skilled Nursing Facilities

While hospital discharge rates are rebounding to near pre-pandemic levels, an Avalere Health analysis of Medicare fee-for-service claims found a “more drastic and lasting decline in patient volume” at skilled nursing facilities. In contrast, Avalere found home health has experienced a rebound in patient numbers beginning last May.

“In the early months of the COVID-19 outbreak in the US, we saw a substantial decrease in hospital discharges to both skilled nursing facilities and home health agencies,” said Heather Flynn, Consultant at Avalere, in an Avalere press release. “Hospital discharges are steadily moving back to pre-pandemic levels, but our analysis points to an uneven ‘return to normal’ across care settings.”

The graph above, taken from the Avalere press release, reveals “a stark decline in inpatient hospital discharges and discharges to both SNF and home health beginning in February 2020. The analysis further indicated that the skilled nursing industry has experienced a more drastic and lasting decline in patient volume relative to total hospital volume and discharges to home health (where rebounds were observed beginning in May). Of note, discharges to home health experienced a year-over-year increase in June 2020, at 4.6% greater discharge volume when compared to June 2019, while discharges to SNF remained notably below pre-pandemic levels at a 25.4% decrease in year-over-year discharges.” (Graphic copyright: Avalere Health.)

Bill Kauffman, CFA, Senior Principal at National Investment Center for Seniors Housing and Care (NIC), believes the skilled nursing industry may be experiencing a permanent prolonged reduction in occupancy levels.

“Skilled nursing facility occupancy typically slows in April after an uptick during the flu season, but we haven’t seen anything like this in recent memory,” Kauffman said in an NIC press release which announced nursing home occupancy had dropped to 78.9% last April, 2020, down 5.5% from 2019. “The long-term effect of COVID-19 on skilled nursing occupancy remains to be seen as the industry adjusts to a new normal.”

Since then, the occupancy rate in skilled nursing properties has fallen even further. The latest Skilled Nursing Monthly Report announced a new low of 74.2%.

Will Clinical Laboratories That Service Skilled Nursing Homes Be Affected?

Low occupancy rates may be pushing the nursery home industry toward a financial crisis. According to an August 2020 survey conducted by the American Health Care Association (AHCA) and National Center for Assisted Living (NCAL), 55% of the nation’s nursing homes are operating at a loss and 89% operate with a profit margin of 3% or less.

Mark Parkinson (above), President and CEO of the AHCA and former Governor of Kansas, maintains a successful COVID-19 vaccination rollout and lifting of nursing home visitation bans are keys to the industry’s recovery. “I think the census needs to recover about 1% a month. If we can recover 1% a month on a steady basis, that gets us to the end of 2021,” Parkinson told Skilled Nursing News. “And we’re still down, but we’re down 5% or 6%; we’re not down 13% or 14%. If we recover a half a percent, some businesses will be okay, but not all. If we only recover half a percent, we don’t get any more money, folks are going to have problems. If we don’t have any recovery on census … things are very, very bad.” (Photo copyright: Kansas Health Institute.)

There are signs the nursing home industry may have to contend with home healthcare becoming a permanent competitor for patients. In a news release last spring, the Mayo Clinic announced it was partnering with Medically Home of Boston to launch a virtual hospital-at-home model aimed at delivering “advanced care” from a network of paramedics, nurses, and support team in a home care setting.

The initiative means patients can receive a range of healthcare services in their homes that traditionally required a hospital setting. The services include:

  • Infusions,
  • Skilled nursing,
  • Clinical laboratory and imaging services,
  • Behavioral health and rehabilitation services.

While the initial program rollout will allow Mayo Clinic to free up ventilators and hospital space for COVID-19 patients, John Halamka, MD, an emergency medicine physician and President of Mayo Clinic Platform, told Modern Healthcare, “Next, we’ll look to forward-thinking organizations who believe like we do in that care should be more convenient and accessible.”

Discharge Doctors Now Choose Home Healthcare Over Skilled Nursing Facilities

Physicians also are embracing home care in greater numbers. As reported in Forbes, a 2020 William Blair survey showed 81% of physicians responsible for discharge planning would send patients to a home health agency rather than a skilled nursing facility. Pre-pandemic, only 54% of discharging physicians expressed a preference for home care, according to the survey.

Greg Chittim, Partner at Health Advances, an international strategy consulting firm headquartered in Boston, points to improvements in virtual technologies as the catalyst for home care’s growth.

“One of the silver linings of COVID-19 is the level of investment we are seeing in virtual care technologies,” Chittim told Forbes. “And beyond the technologies, providers and patients are building that comfort with traditional real-time communication. I think we have moved 10 years ahead in 10 months.”

As the COVID-19 pandemic rolls on and home health initiatives become more commonplace and grow in popularity, clinical laboratory managers may want to develop solutions that assist home healthcare providers with collecting and shipping patient specimens for testing.

—Andrea Downing Peck

Related Information:

Decline in Skilled Nursing Occupancy Continues Due to COVID-19 Pandemic

Hospital Discharges to Home Health Rebound While SNF Volumes Lag

Survey: Nursing Homes Incurring Significant Costs and Financial Hardship in Response to COVID-19

Mayo Clinic Launches Advanced Care at Home Model of Care

Mayo Clinic to Launch National Hospital-at-Home Model

Skilled Nursing Occupancy Reached New Low in November 2020

While Hospital Discharges to Home Health Rebound, SNFs See Drastic and Lasting Decline

Home Healthcare Is a Bright Light During COVID-19 with an Even Brighter Future

Amazon, Berkshire Hathaway, and JPMorgan Chase Close Haven Healthcare After Only Three Years in Operation

Despite high-hopes and much fanfare, the collaboration failed to transform healthcare and lower healthcare costs for everyday Americans as many anticipated it would

Another anticipated “disruptor” to today’s healthcare market is closing its doors. Three years ago, in 2018, Amazon (NASDAQ:AMZN), Berkshire Hathaway (NYSE:BRK.A), and JPMorgan Chase (NYSE:JPM) announced a joint venture to enter into the healthcare market and use their combined market leverage to secure lower-cost healthcare for their 1.2 million employees. At that time, healthcare business experts suggested Haven Healthcare (Haven), as the non-profit joint venture was named, might become a transformative healthcare model other companies could follow.

But that was not to be. In January, the companies announced Haven would close its doors in February. Why did it fail to accomplish its goals? And how will its demise affect the healthcare benefits provided to the thousands of people employed at these companies? The answers to these questions should be of interest to pathologists and medical laboratory managers who want to position their clinical labs as high-quality, added-value contributors to patient care.

One Expert’s Opinion on Demise of Haven Healthcare

In an article he penned for Harvard Business Review, titled, “Why Haven Healthcare Failed,” John S. Toussaint MD, an internist, former healthcare CEO, and founder and Executive Chairman of Catalysis, a non-profit healthcare educational institute, outlined three major reasons for Haven’s closing:

  • Insufficient Market Power: According to Toussaint, the three companies simply did not have the market power to dominate a large enough share of any local market. In addition, with a combined 1.2 million employees, the companies did not have enough employees to incentivize providers into lowering prices.
  • Perverse Incentives: In the current healthcare environment, US insurers and providers make huge profits from treating disease. This means there is little incentive to keep people out of hospitals or accept the risks associated with fixed-price capitation. 
  • Poor Timing: The COVID-19 pandemic forced providers to focus on and manage the crisis, which, in turn, caused them to postpone or even cancel elective and non-emergency medical procedures, resulting in financial hits and the unwillingness to take on the uncertainty associated with new, possibly dubious arrangements.

Why Is It Hard to Disrupt Healthcare?

Jeff Becker, Principal Analyst, Healthcare, CB Insights, told Quartz, “Haven is yet another cautionary tale to outsiders [who] hope to disrupt the industry that their ambition is likely unrealistic and that solving key industry problems proves to be far more difficult than most anticipate.”

Other experts point to a vague plan, an overly ambitious strategy, difficulty retaining top talent, a lack of visible progress, and the divergence of interests between the three companies as potential reasons for Haven’s demise, Quartz reported.

“Haven’s decision to cease operations proves just how hard it is to disrupt the healthcare system in America,” Robert Andrews, JD (above), a former US Congressman for the state of New Jersey, and CEO of Health Transformation Alliance, told Forbes. “Even three of the largest and most influential employers in the country found the challenge a very steep one. We share with Haven’s founders the conviction that employer sponsorship is key.” (Photo copyright: United States House of Representatives.)

Did Haven Healthcare Demonstrate Any Innovation?

It is unclear what the collaboration accomplished or what exactly led to its demise, but it does seem that some positive developments were created through the venture. 

According to Forbes, Haven Healthcare stated on its now-defunct website, “In the past three years, Haven explored a wide range of healthcare solutions, as well as piloted new ways to make primary care easier to access, insurance benefits simpler to understand and easier to use, and prescription drugs more affordable. Moving forward, Amazon, Berkshire Hathaway, and JPMorgan Chase and Co. will leverage these insights and continue to collaborate informally to design programs tailored to address the specific needs of their own employee populations.”

At least one of the three partners may have anticipated Haven’s closure and taken proactive steps. In January of 2020, Dark Daily reported that Amazon Care launched a pilot program which offers virtual primary care to its Seattle employees, and features both telehealth and in-home care services, including clinical laboratory testing.

At that time, we noted the similarities with Haven Healthcare.

And in “Amazon Building Labs to Do COVID-19 Testing,” Dark Daily’s sister publication The Dark Report covered how, as a result of the COVID-19 pandemic, Amazon built and now operates multiple clinical laboratories for testing its employees.

Amazon has a history of entering an industry and successfully disrupting it. Its willingness to build lab testing facilities to do its own COVID-19 testing may be the first step in a multi-year strategy to enter the clinical laboratory industry and disrupt it by offering better quality lab testing services at a cheaper price.  

Thus, it is likely these medical laboratories will continue to deliver clinical testing even after the pandemic has officially ended and will compete with local independent clinical laboratories.

—JP Schlingman

Related Information:

Why Jeff Bezos, Warren Buffett, and Jamie Dimon Gave up on Their Venture to Disrupt US Healthcare

Amazon’s Haven Healthcare Venture to Shut Down

Why Haven Healthcare Failed

Haven Is Shutting Down, 3 Years After It Terrified Health-Care Investors

Amazon Care Pilot Program Offers Virtual Primary Care to Seattle Employees; Features Both Telehealth and In-home Care Services That Include Clinical Laboratory Testing

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