Platelet gel for treatment of mucocutaneous lesions related to graft-versus-host disease after allogeneic hematopoietic stem cell transplant.
BACKGROUND
Platelet (PLT) gel has been successfully used in tissue regeneration of diabetic/surgical wounds through the releasing of growth factors such as basic fibroblast growth factor and PLT-derived growth factor. Therefore, the PLT gel could represent a therapeutic tool in treating the deep and painful wounds sometimes occurring during graft-versus-host disease (GVHD).


STUDY DESIGN AND METHODS
The aim of this study was to verify the efficacy and safety of PLT gel for treating GVHD ulcers. Allogeneic hemocomponents were used to obtain PLT gel with an automated system for the on-site preparation and application of patient (autologous) or healthy blood donor (allogeneic)-derived fibrin sealant or PLT-rich fibrin (Vivostat system, Vivostat A/S). Six patients with multiple lesions involving dermis (Grade I, n = 2), subcutaneous (Grade II, n = 4), or oral mucosa and related to GVHD underwent PLT gel as local therapy.


RESULTS
After the second PLT gel application, the pain disappeared in all cases and the granulation tissue was observed in the four patients with Grade II lesions. After a median of eight PLT gel applications (range, 4-10), five of six patients showed a complete response, while one patient with a partial response died early from multiorgan failure. No side effects were documented.


CONCLUSION
These preliminary data show that the PLT gel may be used as a safe and effective tool in the management of mucosal skin lesions related to the GVHD.