RT Journal Article T1 Role of multimeric analysis of von Willebrand factor (VWF) in von Willebrand disease (VWD) diagnosis: Lessons from the PCM-EVW-ES Spanish project. A1 Perez-Rodriguez, Almudena A1 Batlle, Javier A1 Corrales, Irene A1 Borras, Nina A1 Rodriguez-Trillo, Angela A1 Loures, Esther A1 Cid, Ana Rosa A1 Bonanad, Santiago A1 Cabrera, Noelia A1 Moret, Andres A1 Parra, Rafael A1 Mingot-Castellano, Maria Eva A1 Navarro, Nira A1 Altisent, Carmen A1 Perez-Montes, Rocio A1 Marcellini, Shally A1 Moreto, Ana A1 Herrero, Sonia A1 Soto, Inmaculada A1 Fernandez Mosteirin, Nuria A1 Jimenez-Yuste, Victor A1 Alonso, Nieves A1 de-Andres-Jacob, Aurora A1 Fontanes, Emilia A1 Campos, Rosa A1 Paloma, Maria Jose A1 Bermejo, Nuria A1 Berrueco, Ruben A1 Mateo, Jose A1 Arribalzaga, Karmele A1 Marco, Pascual A1 Palomo, Angeles A1 Castro-Quismondo, Nerea A1 Iñigo, Belen A1 Nieto, Maria Del Mar A1 Vidal, Rosa A1 Martinez, Maria Paz A1 Aguinaco, Reyes A1 Tenorio, Maria A1 Ferreiro, Maria A1 Garcia-Frade, Javier A1 Rodriguez-Huerta, Ana Maria A1 Cuesta, Jorge A1 Rodriguez-Gonzalez, Ramon A1 Garcia-Candel, Faustino A1 Dobon, Manuela A1 Aguilar, Carlos A1 Batlle, Fernando A1 Vidal, Francisco A1 Lopez-Fernandez, Maria Fernanda K1 Área de Gestión Sanitaria de Jerez, Costa Noroeste y Sierra de Cádiz K1 Phenotype K1 Spain K1 Young Adult K1 von Willebrand Diseases K1 von Willebrand Factor AB The multimeric analysis (MA) of plasma von Willebrand factor (VWF) evaluates structural integrity and helps in the diagnosis of von Willebrand disease (VWD). This assay is a matter of controversy, being considered by some investigators cumbersome and only slightly informative. The centralised study 'Molecular and Clinical Profile of von Willebrand Disease in Spain (PCM-EVW-ES)' has been carried out by including the phenotypic assessment and the genetic analysis by next generation sequencing (NGS) of the VWF gene (VWF). The aim of the present study was to evaluate the role of MA to the diagnosis of these patients and their potential discrepancies. Two hundred and seventy out of 480 patients centrally diagnosed with VWD had normal multimers, 168 had abnormal multimers and 42 a total absence of multimers. VWF MA was of great significance in the diagnosis of 83 patients (17.3%), it was also of help in the diagnosis achieved in 365 additional patients (76%) and was not informative in 32 cases (6.7%). With regard to discrepancies, 110 out of 480 (23%) patients centrally diagnosed with VWD presented some kind of discordance between VWF:RCo/VWF:Ag and/or VWF:CB/VWF:Ag ratios, multimeric study and/or genetic results. The VWF MA was key in the presence of novel mutations as well as in cases with phenotypic discrepancies. A comparison between the contribution of MA and VWF:CB showed a clearly higher contribution of the former in the diagnostic process. These data seem to reinforce the relevance of the VWF MA in VWD diagnosis, despite all its limitations. PB Public Library Of Science YR 2018 FD 2018-06-20 LK http://hdl.handle.net/10668/12625 UL http://hdl.handle.net/10668/12625 LA en NO Pérez-Rodríguez A, Batlle J, Corrales I, Borràs N, Rodríguez-Trillo Á, Lourés E, et al. Role of multimeric analysis of von Willebrand factor (VWF) in von Willebrand disease (VWD) diagnosis: Lessons from the PCM-EVW-ES Spanish project. PLoS One. 2018 Jun 20;13(6):e0197876 DS RISalud RD Apr 10, 2025