NCT00488696 investigated a branched stent-graft approach for proximal aortic-arch aneurysms in patients considered high risk for open repair. The UCSF protocol was a single-arm evaluation requiring suitable anatomy, not a randomized comparison with conventional surgery. 12
The latest inspected registry update was submitted in December 2025 and lists the study as withdrawn. Planned endpoints included successful implantation at one month and longer-term graft stability over five years. Older descriptions or site listings should not override that more recent study-level status. 12
Verified implantation, stroke, mortality, or durability results were not recovered. Publications about earlier device development cited in the background are not automatically outcomes from this identifier. The withdrawal label alone does not establish a specific device defect or safety cause. 12