Humacyte Publishes Long-Term Safety and Efficacy Results of Symvess® for Extremity Trauma Repair
Durham, N.C., December 22, 2025 — Humacyte, Inc. (Nasdaq: HUMA), a biotechnology company specializing in bioengineered human tissues, has released significant long-term data on Symvess, a product designed for extremity arterial trauma repairs. The findings were published in the Journal of Vascular Surgery Cases, Innovations and Techniques (JVS-CIT), showcasing promising safety and efficacy outcomes.
Key Findings from the Study
The study titled “Long-term Safety and Efficacy Outcomes of the Acellular Tissue Engineered Vessel (ATEV) in Extremity Arterial Trauma Repair” reveals that Symvess maintained structural integrity over a follow-up period of up to 36 months. Notably, the study reports:
- High limb salvage rates: 87.3% at 12 months and 82.5% at 24 months.
- Low infection rates: Symvess had a 92.9% infection-free rate from months 3 to 36.
- No unprovoked structural failures: No patients experienced spontaneous ruptures or mechanical failures.
Importance of Symvess in Trauma Surgery
Vascular trauma presents unique challenges, often leaving surgeons with limited options for repair. Traditional treatment methods using autologous veins are not always viable, particularly in acute trauma scenarios. Rishi Kundi, MD, Chief of Vascular Trauma at the R Adams Cowley Shock Trauma Center, emphasized the significance of these findings, stating, "Vascular trauma is notorious for the absence of long-term follow-up data. Symvess has shown remarkable limb salvage success and graft integrity."
Among the 54 patients evaluated in the V005 Phase 2/3 study, Symvess emerged as a critical alternative when standard treatments were unfeasible. The consistency of positive outcomes, such as low adverse events and continuous limb salvage rates, reinforces the reliability of this bioengineered solution.
Clinical Implications and Future Perspectives
Charles J. Fox, MD, FACS, highlighted that this evidence supports the view of Symvess as a pivotal development in vascular care, particularly for patients in contaminated wound scenarios where traditional options are unavailable. He stated, "Our patients deserve the best technology available — whether in the civilian setting or on the battlefield."
As a readily available off-the-shelf conduit, Symvess provides a timely solution for urgent revascularization, which is vital in emergency settings. According to Laura Niklason, M.D., Ph.D., CEO of Humacyte, "In trauma surgery, every second counts. Symvess represents a true breakthrough in vascular trauma care."
Safety Information and Indications
Symvess is indicated for use in adults experiencing extremity arterial injury when rapid revascularization is necessary, and where autologous vein grafting is not an option. Important safety considerations include:
- Boxed Warning: There is a risk of graft failure due to mid-graft rupture.
- Contraindications: Symvess should not be used in patients who cannot undergo long-term antiplatelet therapy.
- Adverse Reactions: Common reactions include vascular graft thrombosis and fever.