Which drugs are being tested in the funded studies?
One of the earliest grants we supported was Dr David Boulaware’s randomized controlled trial of hydroxychloroquine (NCT 04308668) in 821 asymptomatic patients within 4 days after a high-risk or moderate-risk exposure. That trial did not show any benefit of hydroxychloroquine as postexposure prophylaxis against COVID-19. This trial was important for another reason. It proved the feasibility of a no-contact trial design in the setting of COVID-19, and participants enrolled themselves through a secure Internet-based survey using the Research Electronic Data Capture (REDCap) system.
Camostat, a transmembrane serine protease (TMPRSS2) inhibitor licensed for use in Japan to treat pancreatitis and esophagitis, combined with the antiandrogen bicalutamide, is being explored for early COVID-19 treatment. TMPRSS2 primes the SARS-CoV-2 spike protein to bind to the ACE2 receptor and gain entry to the cell, and has been shown to have antiviral activity. CETF has provided funding support to ongoing trials of Camostat at Yale University and Aarhus University in Denmark.
Another outpatient trial for fluvoxamine, a drug approved in the United States and routinely prescribed for depression, was also partially funded by a CETF grant to Washington University in St. Louis. Fluvoxamine is a serotonin regulator but also activates the sigma-1 receptor, which reduces the body’s immune response to prevent an overactive immune response or cytokine storm, a major cause of clinical deterioration, serious organ damage, and even death from COVID. This trial was recently completed, and the results have been submitted for publication.
Other promising drugs include niclosamide, doxazosin, favipiravir, leronlimab, interferon beta, interferon lambda, and other monoclonal antibodies. New compounds considered to have potential against COVID include a flu drug (MK-4482/EIDD-2801) and GS-441524, a metabolite of the antiviral drug, remdesivir.
Why not just put all of our resources into vaccine development?
We absolutely need a vaccine to control the outbreak and stop the pandemic. However, it’s a long road to finding an effective vaccine, and in the meantime, we need tools to keep people alive. If we can find an antiviral drug that acts early, we can reduce transmission and contribute to outbreak control. All these tools help us get back to normal while we are waiting for a vaccine. The vaccine is only good if we can give it to every susceptible person in the world — which will take longer than 3 years. And there are no guarantees. Remember, we are still waiting for an HIV vaccine.
You are calling on Americans to help. What do you want them to do?
Everyone must participate in the behavioral changes designed to control the outbreak — physical distancing, face-covering, and paying attention to case counts in local areas to enable them to take appropriate precautions. I know people are bored of that message, but we are going to repeat it until we have a vaccine or herd immunity.
This organism is ripping like wildfire through our unimmunized population. Personal behaviors might slow it down, but finding a drug that can be given to people after they’ve been exposed and test positive will have a meaningful impact on helping us get back to normal.
There’s a great spirit of volunteerism — people are constantly asking how they can help. Through us at CETF, we offer three ways that people can help. They can participate as subjects in clinical trials, many of which are ongoing, including clinical trials, surveillance studies, and follow-up studies. They can donate to our fund and help support the research needed to find an effective early treatment. We have a link on our website, TreatEarly.org. And finally, researchers can apply for funding. We think everybody can help in one of these ways by participating in trials, donating, or applying for funding. It’s an all-hands-on-deck moment for our country.
Danzig is the chief medical advisor of the COVID-19 Early Treatment Fund. She has spent more than 20 years in the pharmaceutical industry developing vaccines, diagnostics, and drugs and is currently advising companies and investors.
This article first appeared on Medscape.com.