Johns Hopkins Team Wins $1M XPRIZE for Reversing Immune Aging

Chronic inflammation in older adults — a phenomenon scientists call inflammaging — is increasingly recognized as a key driver of aging-related decline. Dr. Sean Leng of Johns Hopkins University has spent nearly four decades investigating why the immune system deteriorates with age and whether that deterioration can be reversed. His team's work just earned them $1 million and a spot among the top 10 finalists in the global XPRIZE Healthspan competition.

The XPRIZE Healthspan is a seven-year, $101 million competition launched in 2023 to identify interventions that can genuinely extend healthy, functional years in humans. Nearly 200 teams applied, and every finalist had to present early human evidence of meaningful improvement in muscle function, brain function, or immune function. The Johns Hopkins-SunInflam project is one of six American teams that cleared this bar, competing alongside groups from Japan, South Korea, and China working on approaches ranging from exosomes to repurposed pharmaceuticals.

Leng's scientific focus centers on the role of chronic cytomegalovirus infection and persistent cytokine elevation in driving immune dysfunction, frailty, and poor vaccine response in older adults. His lab has produced more than 200 peer-reviewed papers on these topics, and his background spans immunology, geriatric medicine, and molecular microbiology across institutions including Yale, Texas A&M, and Johns Hopkins.

The Milestone 2 award does more than provide cash. It unlocks access to clinical testing infrastructure purpose-built for aging science, allowing the team to conduct rigorous human trials that would otherwise be difficult to resource. This pipeline from laboratory mechanism to human validation is precisely what the competition was designed to accelerate.

For health-conscious readers, the implications are significant. If inflammaging can be measurably reduced through targeted interventions, the downstream benefits — preserved immunity, reduced frailty, sharper cognition — could translate into meaningful gains in functional healthspan for older adults.