NCT07053254

The Characteristics and Treatment Mechanism of Vascular Grafts in Elderly Patients With CAOD Through Single-cell Transcriptome Analysis

• Status: Recruiting
• Phase: —
• Study type: Observational
• Enrollment: 100 (estimated)
• Sponsor: Yonsei University · Academic / Other
• Sex: All
• Age: 19 Years – 100 Years
• Healthy volunteers: Not accepted

Summary

This study aims to establish a cardiovascular biobank using vascular grafts obtained from participants with coronary artery occlusive disease (CAOD). Through genomic and transcriptomic analyses, the study seeks to characterize the biological features of the vascular grafts and identify potential therapeutic targets and mechanisms related to vascular remodeling and stiffness.

Detailed description

This observational study will utilize discarded vascular graft tissues obtained during coronary artery bypass grafting (CABG) procedures in participants with coronary artery occlusive disease (CAOD). Our surgical team performs over 200 CABG operations annually, allowing for the consistent and ethical acquisition of excess graft tissue without requiring any additional procedures or interventions for participants. Collected tissues will be processed as follows: A portion of each graft will be preserved in RNAlater solution for molecular analyses, including total RNA sequencing, quantitative PCR, and western blotting. Another portion will be fixed in formalin and embedded for histological examination, including immunohistochemistry (IHC), to validate mechanisms of vascular remodeling and stiffness at the protein level. This approach ensures that all biological samples are collected with minimal risk and no additional burden to participants, while enabling comprehensive multi-omic analysis to investigate the pathophysiological characteristics of vascular grafts in elderly CAOD patients.

Conditions

• Coronary Artery Occlusive Disease (CAOD)

Timeline

• Start date: 2022-04-12
• Primary completion: 2027-04-11
• Completion: 2027-04-11
• First posted: 2025-07-08
• Last updated: 2025-07-08

Locations

1 site across 1 country: South Korea