Annals of Oncology 15:129-133, 2004
© 2004 European Society for Medical Oncology
Original Paper |
Incidence and risk factors for central nervous system occurrence in elderly patients with diffuse large-B-cell lymphoma: influence of rituximab
Received 19 March 2003; revised 17 June 2003; accepted 20 August 2003Background:
The incidence of secondary central nervous system (CNS) occurrences in diffuse large-B-cell lymphoma is not sufficiently high to warrant the use of CNS prophylaxis in all patients. The addition of rituximab increases the complete response rate and prolongs event-free and overall survival in elderly patients with such lymphoma.
Patients and methods:
We analyzed a cohort of 399 elderly patients with lymphoma prospectively treated with eight cycles of CHOP with or without rituximab in order to assess if rituximab decreases the risk of CNS localization. Prophylaxis of CNS disease was not part of the treatment protocol.
Results:
We observed 20 CNS occurrences: 12 on therapy, four after partial remission and four following complete remission. In three patients, the CNS was the only site of relapse. In a multivariate analysis, increased age-adjusted International Prognostic Index (IPI) was the only independent predictive factor of CNS recurrence. Only three of 20 patients are alive with a follow-up of 24 months.
Conclusions:
Rituximab did not influence the risk of CNS occurrence, possibly because of low rituximab diffusion. Direct intrathecal administration of rituximab could overcome this problem. We also confirmed that CNS occurrence is related to IPI as well as very poor prognosis of relapses occurring on therapy.
1 Service Hématologie, 2 Service Informatique Médicale, Hôpitaux de Brabois, Nancy; 3 Centre Henri Becquerel, Rouen; 4 Service Hématologie, Hôpital Henri Mondor, AP-HP, Créteil; 5 Service Hématologie, Centre Hospitalier Universitaire, Bordeaux; 6 Service Hématologie, Centre Hospitalier Universitaire, Caen; 7 Service Hématologie, Centre Hospitalier Universitaire, Limoges; 8 Service Hématologie, Centre Hospitalier Universitaire, Toulouse; 9 Service Hématologie, Centre Hospitalier, Chambéry; 10 Service Anatomo-Pathologie, Hôtel Dieu, AP-HP, Paris; 11 Service Hématologie, Hospices Civils, Lyon, France
Key words: aggressive non-Hodgkin’s lymphoma, central nervous system occurrence, risk factors, rituximab
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