Breakthroughs Blog: Antimicrobial resistance

Interested in more global health innovation news? Every week GHTC scours media reports worldwide to deliver essential global health R&D news and content to your inbox. Sign up now to receive our weekly R&D News Roundup email. Last week, BioVersys AG https://www.cidrap.umn.edu/antimicrobial-stewardship/partnership-aims-foster-development-drug-non-tb-mycobacteria announced a new agreement with Shionogi to jointly develop its novel drug for treating non-tuberculosis (TB) mycobacteria, which affects approximately 250,000 people per year, primarily in North America and Asia. Shionogi will provide $6.3 million as an upfront investment for the development of the drug candidate, BV500, through clinical studies and licensing. BioVersys has stated that the candidate has the potential to become a best-in-class therapeutic for non-TB mycobacteria infections, which are currently treated with a lengthy and complex regimen.Scientists at King’s College London have developed a new class of antifungal compounds that could lead to a promising new tool against Candida auris, a dangerous fungal pathogen and a growing global threat. The researchers modified an existing class of antifungal drugs called azoles (which can lose their effectiveness as C. auris becomes resistant to them) to be more impervious to resistance, an approach that has demonstrated promise in lab and preclinical studies. If the new antifungals continue to succeed in further preclinical studies, this research could pave the way for a new, first-in-class antifungal that continues to work in the face of resistance, helping reduce mortality and limit the spread of resistant strains of bacteria.A research team from the University of California, Riverside has made a significant advance in our basic understanding of the Plasmodium falciparum malaria parasite, a step toward the development of new and improved drugs for malaria. The researchers identified two key proteins within the parasite’s cells that control gene expression and used advanced genetic tools to reduce the expression of these proteins, which led to the death of the parasite, verifying their essential role and potential as a drug target. Crucially, these proteins also have no human counterparts. These findings help pinpoint essential targets for developing future drugs that are effective and have minimal side effects.

Interested in more global health innovation news? Every week GHTC scours media reports worldwide to deliver essential global health R&D news and content to your inbox. Sign up now to receive our weekly R&D News Roundup email. Newly published research suggests that a patient-centered approach, combining novel diagnostic tools with targeted therapies, could be a game changer in tuberculosis (TB) treatment. Current TB treatment requires a complicated, months-long regimen that can be hard for patients to adhere to, leading to treatment failure and the emergence of drug-resistant TB strains. The researchers behind the new study suggest that new diagnostic tools that can better distinguish between patients with less and more severe forms of TB combined with, respectively, shorter or longer, more resource-intensive treatment courses could improve patient outcomes, reduce the burden on health systems, and limit the emergence of drug resistance.Last week, Bavarian Nordic announced the start of the first of two clinical trials testing the use of its Jynneos mpox/smallpox vaccine in vulnerable populations, including infants and children two years old and younger and pregnant or breastfeeding women. If the vaccine demonstrates safety and efficacy, the trial data could help support expanded access to the vaccine for the most vulnerable populations. The trial is being led by the University of Antwerp and the University of Kinshasa and supported financially by EDCTP3 and the Coalition for Epidemic Preparedness Innovations.A recently published study found that a single-dose, long-lasting flu drug could provide protection for an entire flu season, offering longer and more effective protection than our current seasonal flu vaccines. The clinical trial followed 5,000 healthy adults for the entire duration of the most recent flu season, finding that the highest dose of the drug provided more than 76 percent protection compared with a placebo shot. The drug has also demonstrated efficacy against a wide variety of flu strains in a previous study in mice, compared to the season influenza vaccines, which are designed (prior to flu season based on expert assumptions) to protect against at least three of the seasonal strains that circulate each season and whose efficacy depends on how well they match the flu strains that end up circulating.

Interested in more global health innovation news? Every week GHTC scours media reports worldwide to deliver essential global health R&D news and content to your inbox. Sign up now to receive our weekly R&D News Roundup email. Last Wednesday, Gilead announced that its twice-yearly injectable drug for HIV prevention has received approval from the US Food and Drug Administration, the first and only such shot for HIV prevention. The drug, lenacapavir, which is already used to treat HIV in certain populations, was found to dramatically reduce the risk of infection, providing near total protection among cisgender men and women, transgender men and women, and nonbinary people in clinical trials. The twice-a-year injection offers a significant improvement over current HIV prevention options that require a daily pill or every two-month injections, helping improve uptake and adherence by providing a more discreet, private, and less cumbersome alternative. Pricing and access plans for the United States and the rest of the world will determine the scale of lenacapavir’s impact on the broader HIV epidemic.Researchers from Cornell University have found that the antibiotic rifampin, which is already widely used, is 99.9 percent effective against Salmonella Typhi, the bacterium that causes typhoid fever, which a growing threat due to antibiotic resistance. The researchers found that S. Typhi is still highly susceptible to the antibiotic and that rifampin-resistant typhoid is extremely unlikely to emerge, despite concern due to the previous emergence of rifampin-resistant tuberculosis cases. The researchers found that rifampin may also be effective against other life-threatening diseases like bacterial pneumonia and meningitis.Newly published research found that a simple, affordable device made with strips of paper was more effective than other commonly used testing methods at detecting malaria in asymptomatic people in Ghana. Malaria testing, particularly at the point of care, is essential to malaria control in endemic areas, especially as increased uptake of the new preventive malaria vaccine lowers natural immunity, raising the need for widespread surveillance. The new test is highly sensitive, offers results in about 30 minutes, and can detect even a low density of parasites in the blood, catching malaria before a patient is sick.

Interested in more global health innovation news? Every week GHTC scours media reports worldwide to deliver essential global health R&D news and content to your inbox. Sign up now to receive our weekly R&D News Roundup email. Recently published research found that vaccinating infants for measles earlier could help close a crucial gap in protection in those early months of life and warrants further study, especially as measles cases surge globally, underscoring the need for new and innovative approaches. The systematic review looked at 34 journal articles with data from 8,000 babies under nine months old in low- and middle-income countries, finding that maternal measles antibody rates were highest at birth before decreasing rapidly, leaving infants with low antibody rates for months before their first recommended measles vaccine dose at 9-12 months, followed by a second at 15-18 months. An earlier first dose, achieved either by giving the first dose sooner or adding a third dose before the routine two-dose schedule, could help close that critical gap in immunity.Last week, Roche announced that it is launching a Phase 3 trial of its novel antibiotic candidate, zosurabalpin, in patients with carbapenem-resistant Acinetobacter baumannii (CRAB) infections, considered one of the most dangerous and deadly antibiotic-resistant pathogens and a priority for antibiotic development. The study, expected to start at the end of 2025 or early 2026, will compare the safety and efficacy of zosurabalpin with standard-of-care antibiotics in around 400 patients with CRAB infections at sites across Europe, North and South America, and Asia. Zosurabalpin was previously shown to demonstrate high efficacy in lab tests against human clinical CRAB isolates and in mice with lung and thigh infections caused by pan–drug-resistant A baumannii.The Coalition for Epidemic Preparedness (CEPI) announced last week that it has signed a new agreement with the US Department of Defense’s Joint Program Executive Office for Chemical, Biological, Radiological and Nuclear Defense to enable collaboration on several projects to boost global preparedness against future disease outbreaks, including through the development of medical countermeasures. The first project will support the development of a monoclonal antibody for the Nipah virus, a deadly zoonotic disease with no approved tools to defend against it. The department will transfer doses of a Nipah monoclonal antibody, which is currently undergoing Phase 1 testing in the United States, to CEPI for a Phase 1b/2a clinical trial in India and Bangladesh, two countries that see almost annual Nipah outbreaks. These trials aim to provide critical data that could enable access to the monoclonal antibody to protect vulnerable populations during an outbreak in Nipah-affected regions and the US joint forces in a potential emergency.