Molecular and epidemiological studies of ascending aortic aneurysms – Research group Hanna Björck

The long-term interest of our team is investigating the pathological and molecular mechanisms underlying aneurysmal disease. We focus on ascending aortic aneurysms, both degenerative forms and aneurysm occurring in association with bicuspid aortic valve disease, with specific interest in endothelial integrity and flow-dependent vascular effects. Our studies are translational combining epidemiological studies on a large and unique patient cohort with molecular in vitro using modern techniques.

Our research

Ascending aortic aneurysm affects thousands of individuals and can lead to acute aortic dissection or rupture, two life-threatening conditions associated with high mortality. Despite significant advances in research over recent years, the molecular mechanisms underlying the disease remain poorly understood, and clinical decisions regarding surveillance and surgical intervention are still based primarily on aortic diameter. This is problematic, as patients with similar aortic dimensions may have markedly different risks of developing severe complications.

Our research aims to elucidate the biological mechanisms underlying the initiation and progression of ascending aortic aneurysms, with a particular focus on the interplay between genetic factors, vascular wall remodeling, and clinical phenotype. The work is supported by a unique biobank comprising more than 3,000 patients, in which biological samples, genetic data, and detailed long-term clinical follow-up are analyzed in an integrated manner.

By combining advanced genomics, molecular biology, and clinical research, we seek to identify early disease mechanisms, characterize genetic risk factors, and develop novel models for predicting disease progression. Ultimately, our goal is to understand why some patients experience rapidly progressive disease, while others remain stable for many years.

Publications

Selected publications

Funding

  • The Swedish Research Council
  • The Swedish Heart-Lung Foundation
  • The Stockholm County Council
  • Magnus Bergvall Foundation
  • Mats Klebergs Foundation
  • KI Research Foundation Grants
  • Private donation by Mr. Fredrik Lundberg

Staff and contact

Group leader

All members of the group

Cooperation

Our research is conducted in close collaboration with leading national and international research groups. We collaborate with Professor Anders Franco-Cereceda at the Department of Cardiothoracic Surgery, Karolinska University Hospital Solna, and are part of the Stockholm Aneurysm Research Group (STAR). The group has also participated in the EU-funded FAD project (Fighting Aneurysmal Disease) and the transatlantic Leducq MIBAVA network (Mechanistic Interrogation of Bicuspid Aortic Valve Aortopathy).

In collaboration with Pelin Sahlén at SciLifeLab, we also investigate promoter-enhancer interactions on a genome-wide scale to better understand the molecular mechanisms underlying cardiovascular disease.