Research Roundup: Stem cells and TB, the research agenda to end malaria, and a monkey species role in ending AIDS

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. In this regular feature on Breakthroughs, we highlight some of the most interesting reads in global health research from the past week. Research carried out in part by an artificially intelligent (AI) robot discovered that a common ingredient in toothpaste—triclosan—showed potential to interrupt malaria-causing parasites at two critical stages of malaria progression. Triclosan, an ingredient used to prevent plaque build-up, is believed to halt the parasites growth in the blood and liver by inhibiting two different enzymes within the parasite, enoyl reductase and DHFR. Triclosan was able to target and inhibit DHFR, even in parasites resistant to the common antimalarial pyrimethamine. This discovery could potentially pave the way for new drug development, and the successful use of AI could result in more robots used for drug discovery purposes. A National Institutes of Health (NIH)-funded schistosomiasis vaccine candidate will soon enter a Phase 1b clinical trial in an endemic region of Brazil. Researchers at Baylor College of Medicine, the George Washington University, and the René Rachou Institute will lead a double-blind, randomized, and controlled study in a group of 60 males and non-pregnant females with potential previous exposure to the parasite to test two different formulations of the vaccine. Schistosomiasis is the second most deadly parasitic infection in the world, affecting more than 200 million people worldwide. The vaccine being tested targets one of two parasite species, which accounts for one-third of all cases and one-half of schistosomiasis deaths worldwide. Many individuals previously treated for schistosomiasis are susceptible to reinfection, highlighting the importance of developing a safe and effective vaccine. A new tuberculosis (TB) vaccine candidate yielded positive results in monkeys, according to a new study published in Nature Medicine. The monkey species, rhesus macaques, are genetically similar to humans, but are significantly more susceptible to TB. The vaccine reduced overall TB disease by 68 percent—a major increase compared to the non-measurable protection rate of the current TB vaccine in rhesus macaques. Additionally, 41 percent of vaccinated monkeys had complete protection from TB, while 30 percent developed a less severe case of TB than unvaccinated monkeys. Thirty percent of vaccinated rhesus monkeys showed no protection. TB kills more than 1.7 million people every year, and the rise of drug-resistant TB highlights the growing need for an effective vaccine.

  2018 is shaping up to be another important year for US policy related to global health and medical research. As Congress returns for a busy work session and the White House continues to roll out policy reforms, here are the top five issues GHTC will be following in 2018: 1. US funding for global health R&D President Trump’s fiscal year 2018 (FY18) budget proposal called for dramatic cuts to global health, medical research, and public health accounts across the National Institutes of Health, US Centers for Disease Control and Prevention, US Agency for International Development (USAID), and the Department of State. While legislators pushed back sharply on these proposed cuts, Congress has not yet passed final FY18 spending bills. This means that we still do not have a final picture of what US government funding for global health and medical research will look like for this year. As Congress tries to navigate budget caps and other pressures that may constrain overall government spending, GHTC will continue to advocate for strong, stable public funding for critical global health and medical research programs. We’re also looking ahead to the fiscal year 2019 (FY19) budget and appropriations process, and bracing for a proposal from President Trump that may include even more significant spending cuts than those proposed in FY18. Despite verbal acknowledgement from the Trump Administration that US global health and medical research programs remain critically important, as the Administration continues plans to streamline government activities and reign-in spending, we do not expect to see prioritization of these issues reflected in Administration-driven spending proposals. GHTC will closely monitor FY19 proposals in the coming months and continue to engage with Congress, who ultimately sets government spending levels. 2. USAID and State Department reorganization As part of the Trump Administration’s plans to streamline and reshape the federal government, it has announced plans to reorganize the State Department and USAID. USAID plays an important role in global health research and development (R&D), supporting late-stage clinical research and implementation research as well as operating Grand Challenges to identify and advance promising health innovations from around the world. USAID and the State Department submitted reorganization plans to the White House Office of Management and Budget on September 15, 2017, but details of those plans have not yet been made public and further information remains scarce. GHTC will continue to monitor evolving plans and policy and strongly advocate for continued leadership of USAID in global health innovation. 3. BARDA reauthorization The Pandemic and All-Hazards Preparedness Act (PAHPA), which authorizes the Biomedical Advanced Research and Development Authority (BARDA), is due for reauthorization this year by Congress. In recent years, BARDA has played an increasingly important role in the advanced development of medical countermeasures for emerging infectious diseases, like Ebola and Zika, and antimicrobial resistance. Reauthorization presents a potential opportunity to bolster BARDA’s role in the global health R&D space. GHTC will monitor the PAHPA reauthorization process and work with Congress to support a strengthened role for BARDA in the emerging infectious disease space. 4. Global health security GHTC is also watching US efforts to promote global health security, including continued support for the Global Health Security Agenda (GHSA)—an international partnership launched in 2014 to help countries strengthen their ability to respond to health threats. The United States is now funding GHSA through the one-time emergency Ebola supplemental funding, which expires in FY19, so future financing for the program remains uncertain. Without renewed commitment and financial support for global health security activities, the United States will have to pull back critical disease detection, prevention, and response operations around the world. GHTC will also work to include R&D in global health security policy decision-making. During the two most recent global disease epidemics, Ebola and Zika, a lack of proactive, sustainable funding for R&D meant that United States and the world did not have the drugs, diagnostics, and other tools needed to contain these diseases. Despite this, GHSA in its current form lacks any prioritization or commitment to R&D to detect, prevent, and respond to global epidemics. As domestic and global discussions on global health security continue, GHTC will advocate for R&D as a critical component of epidemic preparedness and response. 5. US engagement with key multilateral bodies Multilateral organizations and partnerships are vital mechanisms to help advance a healthier and more secure world. In our modern and increasingly globalized world, new, emerging, or long-standing health challenges, which do not respect borders, cannot be tackled by individual countries alone. Strong US leadership and funding for organizations like the United Nations (UN), the World Health Organization, and the Global Fund to Fight AIDS, Tuberculosis and Malaria are key to advancing global health and ensuring that these organizations function effectively in support of US priorities. Despite several senior Trump Administration officials expressing support for strong multilateral engagement, the United States’ role in pushing for a recent $285 million cut to the UN’s overall budget appears more indicative of how the United States can be expected to engage in the near future. While it is currently unclear exactly how these cuts will be implemented across the various UN health-related programs, GHTC anticipates significant impact on the various UN technical agencies’ ability to support global health, including R&D. GHTC is committed to leading strong, coordinated action to advance US leadership in global health R&D in 2018 and beyond. The United States has long been a leader in global health, development, and medical research, and we look forward to sustaining and bolstering this legacy in the years ahead.