Big Pharma Company Stalled Tuberculosis Vaccine in Pursuit of Bigger Profits

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Allowing a potentially lifesaving vaccine to languish shows the distressing reality of public health vaccine creation.

A child receives a Bacillus Calmette-Guérin vaccine to prevent tuberculosis as part of a monthly medical checkup program for children at an integrated services post in Banda Aceh, Indonesia, on August 10, 2023.Ever since he was a medical student, Dr. Neil Martinson has confronted the horrors of tuberculosis, the world’s oldest and deadliest pandemic.

From a business standpoint, GSK’s decision made sense. Shingrix would become what the company calls a “crown jewel,” raking in more than $14 billion since 2018. As TB continued to rage around the globe, it took nearly two years for GSK to finalize an agreement with the nonprofit Bill & Melinda Gates Medical Research Institute, or Gates MRI, to continue to develop the vaccine. While the Gates organization agreed to pay to keep up the research, GSK reserved the right to sell the shot in wealthy countries.

Experts say the story of GSK’s TB vaccine, and its roller coaster of hope and disappointment, highlights a broken system, which has for too long prioritized the needs of corporations over those of the sick and poor. Col. Carl Alving, then an investigator at the Walter Reed Army Institute of Research, said he was the first person known to be injected with an ingredient called MPL, an adjuvant added to the vaccine. Today, we know that adjuvants are key to many modern vaccines. But at the time, only one adjuvant, alum, had ever been approved for use. Alving published promising results, showing that MPL boosted the shot’s success in the body.

The Army found that one of the combinations came out on top: MPL and an extract from the bark of a tree that grows in Chile. The bark extract was already used in veterinary vaccines, but a scientist at one of the world’s first biotech companies had recently discovered you could purify it into a material that makes it safe enough for use in humans.

At an investor presentation in 2016, a GSK executive used the malaria vaccine example to explain the benefit of such work. “Of those of you who think this is just philanthropy, it is not,” Luc Debruyne, then president of vaccines at GSK, told the group. He explained that it was through the malaria work that the company invented the adjuvant that is now in its blockbuster shingles vaccine. And, he explained, vaccines are high-volume products that make a steady stream of money over time.

Reed had just the background and resources to attempt a breakthrough: An adjunct professor at Cornell University’s medical school, he also ran a nonprofit research organization that worked on infectious diseases and had co-founded a biotech company to create and market products. To employees and industry insiders, GSK was making its priorities clear. The company built a vaccine research facility in Rockville, Maryland, to be closer to the NIH and the Food and Drug Administration; at the same time, it was retreating from TB and other global public health projects, according to former employees of the vaccine division.

Scriba, who was involved in the study in South Africa, said he never imagined that GSK wouldn’t continue the research. “To be honest it never occurred to us that they wouldn’t. The people we worked with at GSK were the TB team. They were passionate about TB,” Scriba said. “It’s extremely frustrating.”

Breuer, then chief medical officer for GSK’s vaccine division, explained that the pharmaceutical giant was willing to hand off the vaccine to an organization or company that would cover the cost of future development, licensing, manufacturing and liability. If the next trial went well, they could sell the vaccine in the “developing world,” with GSK retaining the sales rights in wealthier countries.

The year after the WHO meeting, after what a Gates representative described as “a lot of negotiation,” GSK licensed the vaccine to Gates MRI, a nonprofit created by the Gates Foundation to develop drugs and vaccines for global health issues that for-profit companies won’t tackle.that it did not receive upfront fees or royalties as part of the arrangement, but that Gates MRI paid it a small incentive to invest in the company’s global health endeavors.

As expected, Gates MRI will be reliant on GSK to supply the adjuvant, which concerns vaccine hopefuls because of the lack of transparency surrounding its availability. One of the key ingredients, the bark extract, comes from a tree whose harvest and export has been controlled by the Chilean government since the 1970s because of overexploitation. A megadrought and forest fires continue to threaten native forests today.

 

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