The secret panels that pick the vaccine winners

Rachana Pradhan, Kaiser Health News, Tribune News Service

Most Americans have never heard of Dr. Richard Whitley, an expert in pediatric infectious diseases at the University of Alabama-Birmingham. Yet as the coronavirus pandemic drags on and the public eagerly awaits a vaccine, he may well be among the most powerful people in the country.

Whitley leads a small, secret panel of experts tasked with reviewing crucial data on the safety and effectiveness of coronavirus vaccines that US taxpayers have helped fund, including products from Moderna, AstraZeneca, Johnson & Johnson and others. The data and safety monitoring board — known as a DSMB — is supposed to make sure the medicine is safe and it works. It has the power to halt a clinical trial or fast-track it.

Shielding the identities of clinicians and statisticians on the board is meant to insulate them from pressure by the company sponsoring the trial, government officials or the public, according to multiple clinical trial experts who have served on such panels. That could be especially important in the pressure-cooker environment of COVID vaccine research, fueled by President Donald Trump’s promises to deliver a vaccine before Election Day.

As pharmaceutical companies work to produce one as quickly as possible, the board’s anonymity has stirred concerns that the cloak of secrecy could, paradoxically, allow undue influence. Whitley, for example, represents the specialised world these experts inhabit — a professor revered in academia who also is paid by the drug industry.

Any political pressure to rush pharmaceutical companies or lean on federal regulators to prematurely greenlight a vaccine would undermine a system put in place to ensure public safety. Calls are growing for companies and the government to be more open about who’s involved in reviewing the vaccine trials and whether board members have any conflicts of interest.

“We want to know they’re truly independent,” said Dr. Eric Topol, director of the Scripps Research Translational Institute and a specialist in clinical trials. “The lack of transparency is exasperating.”

Data and safety monitoring boards have existed for decades to vet new drugs and vaccines, acting as a backstop to help ensure unsafe products don’t make their way to the public. Typically, there’s one board for each product. This time, a joint DSMB with 10 to 15 experts will review unblinded data across trials for multiple coronavirus vaccines whose development the US government has helped fund, according to five people involved in the Trump administration’s Operation Warp Speed or other coronavirus vaccine work. It is run through the National Institute of Allergy and Infectious Diseases at the National Institutes of Health and consists of outside scientists and statistical experts, not federal employees, NIH Director Francis Collins said on a call with reporters.

“Until they are convinced that there’s something there that looks promising, nothing is unblinded and sent to the FDA,” Collins said. “I doubt if there have been very many vaccine trials ever that have been subjected to this size and the rigor with which it’s being evaluated.”

The NIH safety board oversees trials in the US from Moderna, Johnson & Johnson and AstraZeneca, US officials and others involved in Operation Warp Speed said, but not Pfizer, which is fully funding its clinical trial work and established its own five-member safety panel. Pfizer has attested that it can conclusively determine by late October the effectiveness of its vaccine, being jointly developed with German company BioNTech. It secured a $1.95 billion purchase agreement with the Department of Health and Human Services for the first 100 million doses produced. The agreement gives HHS the option to buy an additional 500 million doses.

Moderna, Johnson & Johnson and AstraZeneca, which have either started or are aiming to soon begin large-scale trials in the US involving thousands of patients, collectively have received more than $2 billion in government funds for vaccine development; billions more have been meted out under agreements similar to the HHS contract with Pfizer to buy millions of vaccine doses. Having one safety board oversee multiple trials could allow researchers to better understand the field of products and apply consistency across evaluations, clinical trial experts said in interviews.

One big advantage “could be more standardization,” said Dr. Walter Orenstein, associate director of the Emory Vaccine Center at Emory University and a former senior official at the Centers for Disease Control and Prevention. “They can look at that data and look at all the trials instead of just doing one trial.”

But it also means that one board has an outsize influence to dictate which coronavirus vaccines eventually succeed or come to a halt, all while most of their identities remain secret. The NIH declined to name them, saying they were “confidential” and could be identified only once a study was complete.

One exception to the mystery is Whitley, who was appointed as chair by Dr. Anthony Fauci, the nation’s top infectious disease official. Fauci said that following a “combination of input from us and from him and other colleagues, the people who had the greatest expertise in a variety of areas, including statistics, clinical trials, vaccinology, immunology, clinical work,” were selected for the panel.

Whitley’s role became public when his university announced it, an unusual move. He is a professor as well as a board member of Gilead Sciences, which recently signed a contract with Pfizer to manufacture remdesivir to treat COVID-19 patients. Whitley, who’s been on Gilead’s board since 2008, conducted research that led to remdesivir’s development.

GlaxoSmithKline and Sanofi are jointly developing a vaccine that’s received $2 billion from the US government under Operation Warp Speed; however, Whitley, through a university spokesperson, said his DSMB has not seen any GlaxoSmithKline COVID protocols. The companies have yet to begin phase 3 trials. Although he chairs a separate GSK data and safety monitoring board for a pediatric vaccine, he was vetted and cleared by the NIH conflict-of-interest committee with its knowledge of his involvement, the spokesperson said.

Multiple scientists who have participated in data and safety monitoring boards maintain it’s important to keep the board anonymous to shield them against pressure or even for their safety. For example, when trials were conducted in San Francisco for HIV/AIDS research, the board was confidential to protect members from patients desperate for treatment, said Susan Ellenberg, a professor of biostatistics, medical ethics and health policy at the University of Pennsylvania who’s written extensively on the history of DSMBs.

As part of a large-scale clinical trial, the DSMB and a statistician or team that prepares data for those individuals are generally the only ones who see unblinded data about the trial, making it clear who is getting what treatment. A firewall is set up between them and executives from the sponsoring company with financial interests in the trial. The companies sponsoring COVID vaccine trials are not part of any closed sessions during which unblinded data is reviewed. Those are limited to members of the DSMB, the NIAID executive secretary and the independent unblinded statistician who is presenting the data, a NIAID spokesperson said.