Health
First at-home syphilis antibody test gets FDA authorization as STD cases spike in US
The U.S. Food and Drug Administration has granted marketing authorization for the first at-home syphilis test.
The over-the-counter First To Know Syphilis Test, made by NOWDiagnostics in Arkansas, detects antibodies for Treponema pallidum (syphilis), according to a press release.
The test, which does not require a prescription, takes about 15 minutes to administer using only a drop of blood — “like a finger prick,” the company said.
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Results will be positive for those experiencing a current syphilis infection — as well as for those who have been previously diagnosed, even if they were successfully treated.
The test results are not sufficient to diagnose syphilis alone, however, and should be followed by additional testing from a provider to confirm the diagnosis, according to the FDA.
The First To Know Syphilis Test, pictured here, uses a blood sample to detect the infection. (NOWDx)
A clinical study of 1,270 people found the product “easy to use,” a press release from NOWDiagnostics noted.
The study results showed that the test correctly identified 99.5% of negative results and 93.4% of positive diagnoses.
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“With FDA authorization now granted, we are proud to offer the first test of its kind that provides highly accurate results in just minutes, using a single drop of blood and without the need for a buffer,” NOWDiagnostics CEO Rob Weigle told Fox News Digital via email.
“This breakthrough in diagnostic testing empowers individuals to take control of their health from the privacy of their own home, playing a critical role in early detection and treatment, and ultimately helping to slow the spread of syphilis and protect public health.”
“This is a great advance and has been vetted for accuracy,” one doctor commented. (NOWDx)
Fox News medical contributor Dr. Nicole Saphier said she considers at-home tests to be “great,” as they often lead to more people being tested who would not otherwise visit the doctor.
“Anything that increases access to health information while also being cost-effective is a positive step in the right direction,” the New York-based doctor told Fox News Digital.
Efforts to stop the surge
There has been a major rise in syphilis cases in the U.S. over the last few years.
Cases spiked by 80% between 2018 and 2022, according to data from the Centers for Disease Control and Prevention (CDC).
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In 2022, more than 3,700 cases of congenital syphilis were reported among newborns, the agency stated.
Earlier this year, the Department of Health and Human Services established the National Syphilis and Congenital Syphilis Syndemic (NSCSS) Federal Task Force to help combat the surging numbers.
Study results showed that the test correctly identified 99.5% of negative results and 93.4% of positive diagnoses. (iStock; NOWDx)
In addition to the task force, the FDA assured that the authorization of this new at-home test will help to “reverse the recent dramatic rise of STIs in the United States.”
“If left untreated, syphilis can seriously damage the heart and brain and can cause blindness, deafness and paralysis,” the FDA wrote in the press release.
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“When transmitted during pregnancy, it can cause miscarriage, lifelong medical issues and infant death.”
Fox News senior medical analyst Dr. Marc Siegel told Fox News Digital that these advancements could also play into the CDC’s new program, DOXY PEP, which aims to prevent “post-exposure prophylaxis with doxycycline for chlamydia, gonorrhea and syphilis.”
“When transmitted during pregnancy, [syphilis] can cause miscarriage, lifelong medical issues and infant death.”
The program has been shown to “markedly decrease clinical infection,” said New York-based Siegel.
Siegel called the new syphilis test “especially important,” as “the earlier syphilis exposure/diagnosis is made the better.”
The authorization of the new at-home test will help to “reverse the recent dramatic rise of STIs in the United States,” the FDA stated. (iStock)
Michelle Tarver, M.D., PhD, acting director of the FDA’s Center for Devices and Radiological Health, wrote in a statement that advancements in tests for STIs can “give patients more information about their health from the privacy of their own home.”
“Access to home tests may help increase initial screening for syphilis, including in individuals who may be reluctant to see their health care provider about possible sexually transmitted infection exposure,” she said.
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This can lead to increased lab testing to confirm the diagnosis, Tarver added, which can increase treatment and help curb the spread.
The FDA confirmed that false negative results may occur, which can cause delays in treatment and further spread of the infection. (iStock)
Saphier added that as syphilis cases rise, it’s “disappointing to see so many advanced cases of a disease that is otherwise treatable.”
“While prevention is always the best method, early detection and treatment intervention are essential to not only result in the best health outcome, but also decrease the overall cost burden on society — because advanced disease and disability are expensive,” she said.
Potential limitations
Saphier shared some concerns about using at-home tests in detecting illness, as they are “often lower in accuracy than standardized laboratory testing.”
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“This may result in false negative results and a person who otherwise may require treatment not seeking it,” she said.
“If someone is [at] high risk for syphilis exposure or having symptoms, they should skip the at-home testing and speak to their doctor.”
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The FDA confirmed that false negative results may occur, which could cause delays in treatment.
Congenital syphilis symptoms include sores and rashes on the skin, fever, jaundice, sneezing or runny nose and swollen spleen and liver, according to Mayo Clinic. (iStock)
“Results of the test alone should not be used to start, stop or change any treatments without a health care provider,” the FDA wrote in the press release.
“If someone is [at] high risk for syphilis exposure or having symptoms, they should skip the at-home testing and speak to their doctor.”
“In addition, individuals using this test who may have been recently exposed to syphilis should seek care from a health care provider for treatment and evaluation regardless of this test’s results.”
Congenital syphilis symptoms include sores and rashes on the skin, fever, jaundice, sneezing or runny nose, and swollen spleen and liver, according to Mayo Clinic’s website.
If left untreated, later symptoms can include hearing loss, dental problems and “saddle nose,” a condition in which the bridge of the nose collapses.
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A new injectable therapy is showing positive results in reducing melanoma throughout a five-year period.
The personalized mRNA cancer therapy, called intismeran autogene, combined with the cancer immunotherapy drug KEYTRUDA (pembrolizumab), is a collaboration between Merck and Moderna.
The results from the phase 2b KEYNOTE-942 study were presented at the American Society of Clinical Oncology (ASCO) Annual Meeting in Chicago on May 27.
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After about a five-year follow-up, the combo drug was found to reduce the risk of melanoma recurrence or death by 49% compared to pembrolizumab alone.
The researchers analyzed data from 157 patients with high-risk stage 3 and 4 melanoma whose cancer had been removed via surgery. The participants were split into two groups — one received the combo therapy and the other only received pembrolizumab, according to a press release.
The therapy was found to reduce the risk of melanoma recurrence or death by 49% compared to pembrolizumab alone after a five-year follow-up. (iStock)
The findings revealed that the combination group saw benefits that were “sustained and durable over time.”
Intismeran autogene is designed using mutations identified in a patient’s own tumor, with the intention of teaching the immune system what the cancer looks like so that it can recognize and attack it.
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According to the researchers, intismeran is “well-tolerated” with a “manageable” safety profile.
The most commonly cited side effects of the personalized mRNA vaccine plus KEYTRUDA were fatigue, injection-site pain, chills, fever and headache. The researchers reported no new long-term safety concerns and no severe vaccine-related adverse events.
The combination therapy is currently being evaluated in a phase 3 study — the final confirmation stage.
Patients with late-stage melanoma have a “significant risk” of cancer recurrence, according to an expert. (iStock)
In a Merck press release from January, Kyle Holen, MD, Moderna’s senior vice president and head of development, oncology and therapeutics, noted that this data highlights the “potential of a prolonged benefit … in patients with resected high-risk melanoma.”
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“We continue to invest in our platform in oncology because of encouraging outcomes like these, which illustrate mRNA’s potential in cancer care,” he said.
Dr. Marjorie Green, senior vice president and head of oncology, global clinical development at Merck Research Laboratories, also commented that for many patients with stage 3 or 4 melanoma, there is a “significant risk of recurrence following surgery.”
Researchers confirmed that the combination therapy is currently being evaluated in a phase 3 study. (iStock)
“As such, demonstrating the longer-term potential of intismeran autogene and KEYTRUDA to reduce the risk of recurrence for certain patients with melanoma is a meaningful milestone,” she said.
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The company cited encouraging five-year follow-up data and pointed to upcoming late-stage INTerpath trial results with Moderna in several hard-to-treat cancers.
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An accidental lab discovery has opened the door to entirely new ways of preventing the flu.
While investigating how influenza replicates, researchers discovered that different flu strains use completely different strategies to infiltrate human cells, SWNS reported.
By targeting the specific molecules the viruses rely on, scientists found that they could block them from entering new cells and halt their replication altogether.
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Researchers say these “fundamental insights” into seasonal influenza highlight a clear path toward developing better preventive medications.
“The hope is that fundamental, curiosity-based research like this helps to pave the way for novel strategies to treat and prevent influenza infections,” principal investigator Dr. Emily Bruce, from the University of Vermont’s Larner College of Medicine, said in the SWNS report.
While investigating how influenza replicates, researchers discovered that different flu strains use completely different strategies to infiltrate human cells. (iStock)
While several flu strains cause illness, H1N1 and H3N2 influenza A viruses are the most common. However, current flu tests cannot differentiate between them, and clinical treatments are identical for both.
Although vaccines and antivirals are available, Bruce noted a “dire” need for better medications to stop the virus from spreading cell to xxcell.
“You don’t get sick when a virus is in one cell,” he noted. “You get sick because a virus replicates itself and goes into many more cells.”
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The study, which was published in The Journal of Virology, originally aimed to map how viral RNA segments are transported within cells to create new viral particles.
The team used H1N1 and H3N2 viruses isolated from the nasal passages of positive patients in 2022.
Clinical treatments remain identical for both primary strains of the flu virus. (iStock)
During the investigation, the team unexpectedly stumbled upon a cellular pathway that blocked the virus from entering lung cells, SWNS reported.
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The data revealed that when a specific human protein called Rab11B was depleted, H3N2 viruses failed to enter human lung cells. H1N1 viruses were completely unaffected.
Using reverse genetics, the team mapped this defect and uncovered a brand-new, H3N2-specific role for Rab11B during viral entry.
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This discovery challenged the scientific assumption that all flu viruses enter cells the same way.
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“Viruses are like pirates from different countries hijacking someone’s ship,” Bruce said. “Different viruses, like different types of pirates, use different methods to get onboard.”
This discovery challenged the scientific assumption that all flu viruses enter cells the same way. (iStock)
“We had previously thought that all flu viruses used the same way to get into a cell, but we discovered that this is not true,” she went on. “H1N1 and H3N2 need different proteins to get in, and if you get rid of the right protein, a specific virus can’t get in.”
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While these findings identify a critical cellular pathway for viral entry, the study was conducted using isolated cells, the researchers acknowledged.
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Further research is needed to determine whether blocking the protein is safe and effective within a live, complex human respiratory system.
Bruce and the team hope to conduct further research to determine whether this Rab11B-dependency is a fundamental property of H3N2, or if it’s a trait unique to currently circulating flu strains.
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Eating processed meat like ham, sausage and bacon may be linked to a higher risk of certain types of cancer, according to new research.
While health organizations have already confirmed that processed meat can contribute to colon cancer, this study looked closer at cancers in the upper digestive tract, where the link has historically been less clear.
To understand these connections, researchers from the European Prospective Investigation into Cancer and Nutrition (EPIC), one of the world’s largest long-term nutrition and cancer cohorts, tracked the health and diets of 450,112 people across Europe for an average of 14 years.
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The study group included 131,426 men and 318,686 women, according to the study’s press release.
During the follow-up period, 876 people developed stomach cancer and 215 people developed esophageal adenocarcinoma, which is cancer of the tube connecting the mouth to the stomach.
For female participants, eating both processed meat and white meat was linked to an increased risk of developing the disease. (iStock)
Researchers tracked where the stomach cancers grew, separating them into the upper part of the stomach near the throat and the lower part of the stomach.
The researchers also sorted the tumors into two categories based on how the cancer cells appeared under a microscope: intestinal, which forms more organized structures, and diffuse, in which the cells are more scattered throughout the tissue.
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After adjusting for other lifestyle factors, the researchers found that for every extra 30 grams of processed meat a person ate per day, their overall risk of stomach cancer went up by 9%. Eating that same extra 30 grams a day was also linked to a 13% higher risk of esophageal adenocarcinoma.
A standard single slice of regular deli-sliced ham or lunch meat averages around 28 grams, according to USDA data and nutritional tracking databases.
An extra 20 grams of white meat, such as chicken and turkey, was linked to a 12% higher risk of cancer in the main body of the stomach. (iStock)
An extra 20 grams of white meat, such as chicken or turkey, was linked to a 12% higher risk of cancer in the main body of the stomach, the researchers noted.
The study also revealed differences between men and women. For male participants, only processed meat showed a clear, statistically significant link to a higher risk of stomach cancer. For female participants, however, eating both processed meat and white meat was linked to an increased risk.
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These findings align with global health benchmarks, particularly those established by the World Health Organization’s International Agency for Research on Cancer.
The agency has long classified processed meat as a known human carcinogen, primarily due to its strong, well-documented links to colorectal cancer.
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However, health organizations have also consistently pointed to a potential, yet less definitive, relationship between these meats and cancers of the stomach.
Eating 30 grams of processed meat a day, or the equivalent to one slice of ham, was linked to a 13% higher risk of esophageal adenocarcinoma. (iStock)
Further scientific investigation is needed to confirm the findings and to account for other underlying risk factors, such as certain stomach infections, which could interact with dietary habits.
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A key limitation of the study is its reliance on self-reported diets, which can sometimes lead to inaccuracies in how participants recall their meat consumption over time, the researchers noted.
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The findings were published in the International Journal of Cancer.
Fox News Digital reached out to the researchers requesting comment.
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