Abstract
Extracorporeal photopheresis (ECP) combines the collection of white blood cells treated with 8-methoxypsoralen (8-MOP), photoactivation with ultraviolet A, and reinfusion of the treated cells into the patient. It was primarily developed for the treatment of cutaneous T-cell lymphoma but now has been established as a second-line treatment for acute and chronic graft-versus-host disease (GvHD). ECP can either be performed “in-line” by a single instrument or “off-line” by the combination of a blood cell separator with a photoactivation device. Side effects of ECP are usually mild and not associated with systemic immunosuppression. The mechanism of action is still incompletely understood. The efficacy of ECP in acute GvHD has been shown both in animal models and in clinical studies. Clinical response to ECP in patients with acute GvHD is significantly associated with a lower transplant-related mortality (TRM). The therapeutic action of ECP in steroid-dependent and steroid-refractory chronic GvHD has been demonstrated by a large body of clinical data including a prospective randomized trial. Steroid-sparing effect is a key feature of this therapeutic modality. Future perspectives of ECP comprise its introduction into first-line GvHD treatment and prevention strategies.
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Hölig, K., Greinix, H. (2020). Extracorporeal Photopheresis in Hematopoietic Cell Transplantation. In: Abutalib, S., Padmanabhan, A., Pham, H., Worel, N. (eds) Best Practices of Apheresis in Hematopoietic Cell Transplantation. Advances and Controversies in Hematopoietic Transplantation and Cell Therapy. Springer, Cham. https://doi.org/10.1007/978-3-319-55131-9_13
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