Study Links Brain Changes to Pulmonary Hypertension

Pitt and UPMC researchers identify brain abnormalities tied to cognitive decline in pulmonary hypertension patients.

Updated on Nov. 2, 2026 in Alzheimer’s

Isometric editorial illustration showing a branching red vessel rising from below into a grey brain-shaped mass on a plain field, suggesting a lung-to-brain connection. — Researchers at the University of Pittsburgh and UPMC linked brain abnormalities to cognitive decline in pulmonary hypertension patients, pointing to a possible biological marker. AI Illustration. Upload story photo >

University of Pittsburgh and UPMC researchers identified brain abnormalities linked to cognitive decline in patients with pulmonary hypertension, a condition that causes high blood pressure in the lung's blood vessels. The findings, published November 2, 2026, in the Journal of Clinical Investigation, also point to a biological marker that could help screen people for future cognitive issues.

Why it matters

Cognitive problems such as impaired executive function and memory loss are often present in pulmonary hypertension, and the study suggests they may have a biological cause rather than being solely a result of low oxygen, heart function or medication. Identifying a marker and an inflammation pathway could open new diagnostic and treatment avenues for preserving brain function.

Brain MRI scans and blood tests showed consistent brain tissue loss and weakened cerebellum-frontal lobe communication in pulmonary hypertension patients, changes absent in people with other heart, lung and psychiatric conditions. About a quarter of these patients carry a genetic variant in the NCOA7 gene linked to brain inflammation, but whether targeting that inflammation would protect cognition is not yet established.

The players

University of Pittsburgh

A public research university in Pittsburgh, Pennsylvania, whose researchers led the study of brain changes in pulmonary hypertension patients.

UPMC

The University of Pittsburgh Medical Center, a major academic health system whose researchers contributed patient data and co-led the study.

Journal of Clinical Investigation

A peer-reviewed biomedical journal published by the American Society for Clinical Investigation that released the study.

The details

Researchers used brain MRI scans and blood tests to look for brain changes unique to pulmonary hypertension, comparing scans against those without the disease using a large public health database and a smaller group of UPMC patients. In mice, those with pulmonary hypertension that lacked the NCOA7 gene had more severe cerebellar damage than mice with the disease alone.

November 2, 2026: Study published in the Journal of Clinical Investigation.

Health Landscape

The study extends prior research on the NCOA7 gene's role in inflammation by tying its activity to cerebellar damage in pulmonary hypertension, a condition not previously linked to dementia-related brain changes. It adds to a growing body of work treating chronic inflammation as a possible driver of cognitive decline rather than only a downstream effect of disease.

For people living with pulmonary hypertension, the findings suggest that cognitive symptoms such as memory problems or trouble with executive function may warrant attention alongside their heart and lung care. The study does not yet change how patients are tested or treated, so anyone with concerns should discuss them with their physician.

The takeaway

Brain changes in pulmonary hypertension may have a biological cause, and a genetic marker could eventually help identify patients at risk of cognitive decline. Patients experiencing memory or thinking changes should raise them with their care team.