Abstract
Rituximab induces B-cell depletion; therefore, it has been used in the treatment of immune thrombocytopenic purpura (ITP). The aim of this retrospective study was to evaluate the effectiveness of rituximab in the treatment of 89 patients with chronic ITP refractory to several treatments. All the patients had platelet counts <30×109/l. They had received a median of five (2–13) previous treatments, and 47 had undergone splenectomy. Rituximab was administered i.v. at 375 mg/m2 in four weekly doses in 77 patients, and 12 patients received 1–6 doses. Forty-nine patients (55.1%) reached platelet counts >50×109/l; 41 (46%) achieved a complete response (CR; platelets >100×109/l), and eight (9%) obtained a partial response (platelets 50–100×109/l). Overall, 31 patients (35%) maintained response, including 15 patients in whom splenectomy failed, with a median follow-up of 9 months (2–42), 12 for more than 1 year. The unique predictor of a maintained response was to reach a CR. Heavily treated patients (more than three different previous treatments, including any corticosteroids) and those with longer ITP duration (>10 years from diagnosis) had a worse response. Non-splenectomized patients had a better early response rate than those splenectomized. Rituximab was well tolerated, with two fever episodes following infusion and two reports of skin rash. Rituximab induced clinical responses in multi-treated refractory ITP patients with little toxicity and should be considered as an early therapeutic option in this setting, even as an alternative to splenectomy in selected patients.
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Acknowledgements
Members of the Spanish Study Group on the use of rituximab in refractory ITP: Rosalía Bustelos, Hospital Universitario 12 de Octubre, Madrid; Carmen Fernández-Miñano, Hospital Vega Baja de Orihuela, Alicante ; Secundino Ferrer, Hospital Doctor Peset, Valencia; Consuelo Funes, Hospital Santa María de Rosell de Cartagena, Murcia; María Carmen García, Hospital General de Elda, Alicante; María Luisa Martín, Hospital San Pedro de Alcántara, Cáceres; Enrique Mut, Hospital General Universitario de Alicante; Alicia Bailén, Hospital Carlos Haya, Málaga; Rosa María Campos, Hospital del SAS de Jeréz de la Frontera, Cádiz; Ana Carral, Hospital de Sagunto, Valencia; Carlos Cerveró, Hospital Virgen de la Luz, Cuenca; Carlos Clavero, Hospital Torre-Cárdenas, Almería; Joaquín Díaz-Mediavilla, Hospital Clínico San Carlos, Madrid; Jose María Durán, Hospital del SAS de La Línea de la Concepción, Cádiz; Víctor Echeverría, Hospital Universitario Gregorio Marañón, Madrid; María Ángeles Fernández, Hospital Virgen del Puerto de Plasencia, Cáceres; Julio García-Suárez, Hospital Príncipe de Asturias de Alcalá de Henares, Madrid; María Guinot, Hospital General de Castellón; Magdalena Herrera, Hospital Nuestra Señora. de la Candelaria, Tenerife; Isidro Jarque, Hospital Universitario La Fé, Valencia; Antonio Cerveró, Hospital General de Valencia; Francisca Marín, Hospital de Elche, Alicante; María José Moreno, Hospital Clínico Virgen de la Victoria, Málaga; Miquel Morey, Hospital Son Dureta, Palma de Mallorca; José Nieto, Hospital Morales Meseguer, Murcia; Isabel Picón, Fundación Instituto Valenciano de Oncología, Valencia; Eduardo Ríos, Hospital Virgen del Rocío, Sevilla; Juan Nicolás Rodríguez, Hospital Juan Ramón Jiménez, Huelva; Jorge Sánchez-Guilarte, Hospital de Móstoles, Madrid. The authors gratefully acknowledge Dra. María Jesús Fernández-Aceñero for her support and critical reviewing of the manuscript.
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An erratum to this article can be found at http://dx.doi.org/10.1007/s00277-006-0123-3
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On behalf of the Multi-institutional Retrospective Spanish Study on the use of rituximab in refractory ITP., Peñalver, F.J., Jiménez-Yuste, V. et al. Rituximab in the management of chronic immune thrombocytopenic purpura: an effective and safe therapeutic alternative in refractory patients. Ann Hematol 85, 400–406 (2006). https://doi.org/10.1007/s00277-005-0073-1
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DOI: https://doi.org/10.1007/s00277-005-0073-1