Research Roundup: Phase 3 TB vaccine trials, Pooled vaccine inventory scheme, COVID-19 antiviral licences

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. Gavi, the World Health Organization (WHO), and UNICEF have announced that an initial 18 million doses of the world’s first malaria vaccine, RTS,S/AS01, will be rolled out in 12 African countries, where the risk of child illness and deaths from malaria is highest. The vaccine, which will be produced by GlaxoSmithKline and Bharat Biotech, is expected to arrive in the initial countries in late 2023. A further 16 countries have also asked for access and are expected to receive it once production has scaled up. Another malaria vaccine, R21, developed by Oxford University is currently awaiting WHO prequalification. In the coming years, both vaccines are expected to play a key role in the fight against malaria alongside other tools.A study published last week found that injections of broadly neutralizing antibodies in children living with HIV can improve the protective effects of antiretroviral drugs, marking the first time broadly neutralizing antibodies have been tested in combination with antiretroviral drugs in a pediatric population. The treatment suppressed cells that contained the virus and were capable of reactivating, paving the path to further research that could confirm the use of this method as a supplemental or alternative treatment for HIV in children. The publication of these findings follows recent research, which has focused on testing broadly neutralizing antibodies as a treatment for adults with HIV. Worldwide, about 1.7 million infants and children are living with HIV.Last week, Gavi confirmed that some of the $2.6 billion remaining in COVAX, the COVID-19 vaccine delivery initiative, could be redirected towards furthering investigational vaccine candidates for Marburg and Ebola Sudan, as well as a hexavalent vaccine that would offer protection against diphtheria, tetanus, pertussis, hepatitis B, Haemophilus influenzae type b, and the inactivated polio vaccine. The investments for Marburg and Ebola Sudan will hopefully contribute to ensuring clinical trials in future outbreaks, especially after the scrapped trials during the recent Marburg and Ebola Sudan outbreaks.

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, the World Health Organization (WHO) published its first global research agenda outlining key priorities in the fight against antimicrobial resistance. The intent of the agenda is to provide researchers, policymakers, funders, and other stakeholders with priority research topics for which greater action and evidence is needed. It covers issues including preserving current antimicrobials, advancing point-of-care diagnostic tests, and developing novel drugs to treat drug-resistant infections. The 40 priorities that relate to prevention, diagnosis, treatment and care, and cross-cutting topics were developed after a review of more than 3,000 documents published over the past decade looking at antimicrobial resistance.A recent study found promising results for a new, point-of-care genomic test for human papillomavirus (HPV) that could be a cheaper and more accessible option for cervical cancer screening in low-resource areas like sub-Saharan Africa, which has the highest rate of deaths from cervical cancer globally. Unlike currently available screening options, the HPV DNA test can be performed by a health care professional with minimal training using a mini centrifuge in the lab, cutting out the need for robust laboratory infrastructure and highly skilled professionals. The research team behind the test is now trying to make the test even more effective and efficient in low-resource settings by making it faster, inclusive of more HPV genotypes, and more sensitive.Researchers from the University of Montreal recently published a study showing for the first time the crucial role of a protein, adyl hydrocarbon receptor, or AhR, in allowing HIV to remain latent in the body, thus requiring antiretroviral therapy to be maintained in order to keep the virus from replicating. The researchers used CRISPR technology and drugs to neutralize the activity of AhR and observed that viral growth occurred in people living with HIV and on antiretroviral therapy. The study proposes a “shock and kill” strategy that would use drugs to inhibit and then reactivate AhR in the presence of AhR inhibitors to expose the HIV-infected cells for the immune system to then target and kill. Investigators hope further research can validate this method of fighting HIV.