| Title | Alpha-Gal Syndrome and Aortic Valve Replacement. |
| Publication Type | Journal Article |
| Year of Publication | 2025 |
| Authors | Sami N, Ravishankar B, Worku B, Khatib D, McGintee E, Sacchi T, Dogan O, Perk G, Reisman M, Mihatov N |
| Journal | JACC Case Rep |
| Volume | 30 |
| Issue | 32 |
| Pagination | 105478 |
| Date Published | 2025 Oct 15 |
| ISSN | 2666-0849 |
| Abstract | BACKGROUND: Alpha-gal syndrome (AGS) is an IgE-mediated hypersensitivity response to galactose-alpha-1,3-galactose (alpha-gal), an oligosaccharide present in beef and pork. This complicates bioprosthetic heart valve selection, as both bovine and porcine valves contain alpha-gal, posing risks of allergic reaction and potentially accelerated structural valve degeneration. CASE SUMMARY: A 78-year-old man with AGS and severe symptomatic aortic stenosis underwent transcatheter aortic valve replacement with a porcine-derived Evolut FX 29-mm valve following multidisciplinary evaluation. Preoperative allergist-guided prophylaxis, including IgE risk stratification, antihistamines, and corticosteroids, enabled successful implantation without complications. DISCUSSION: Bioprosthetic valves may pose unique risks for individuals sensitized to alpha-gal, where an alpha-gal IgE to total IgE ratio ≤5% is a proposed threshold in which patients can be rechallenged with animal products. This case highlights the successful management of a slightly higher ratio. TAKE-HOME MESSAGE: The interplay between AGS, bioprosthetic valve selection, and structural valve durability necessitates an individualized approach to mitigate the hypersensitivity risks. |
| DOI | 10.1016/j.jaccas.2025.105478 |
| Alternate Journal | JACC Case Rep |
| PubMed ID | 41106900 |