patients with relapsed or refractory IGL received intensified preparative therapy and underwent autologous transplantation at a single institution. Two intensified preparative regimens were used: cyclophosphamide, etoposide, total body irradiation (CY-VP-TBI) (n = 66) and cyclophosphamide, BCNU, etoposide (CBV) (n = 33). As clinical features and results were not different for the two preparative regimens, results were combined. For all patients undergoing autologous transplantation, 5-year actuarial overall survival (OS) was 34% ± 6%; 5-year event-free survival (EFS) was 26% ± 5%. For patients who responded to primary therapy, salvage therapy, or both, OS was 42% ± 7%; for nonresponders to prior therapy, OS was 14% ± 7%, P Ͻ 0.025. OS was better among patients responding to salvage therapy (50% ± 9%), than among patients who had a complete response to initial therapy, but failed to respond or were untested/unevaluable with respect to salvage therapy (26% ± 10%; P Ͻ 0.025). On multivariate analysis, response to salvage therapy was associated with survival following autologous transplantation (P Ͻ 0.005). Treatment related mortality was 9% overall and only 6% after G-CSF and GM-CSF were introduced into routine clinical practice. High-intensity preparative therapy is highly effective, with acceptable treatmentrelated mortality, in patients with IGL who have responded to induction therapy, salvage therapy, or both. The best responses are observed in patients responding to salvage therapy. Randomized prospective studies will be needed to further define the role of intensified preparative regimens. Bone Marrow Transplantation (2000) preparative regimens, long-term disease-free survival (DFS) has been associated with disease chemoresponsiveness. 3-7 However, even among patients with sensitive disease, long-term DFS has generally been seen in only 30-50% of patients. 2,5-8 Among patients with resistant disease, less than 10% survive long-term. 3,6 Intensification of the preparative regimen is one potential means of improving these clinical results. [9][10][11][12] Since 1986, we have studied two intensified preparative regimens in patients with relapsed or refractory IGL. One regimen added etoposide to the standard cyclophosphamide-TBI regimen, the other used augmented dose BCNU in combination with etoposide and cyclophosphamide. This report summarizes our experience with augmented preparative therapy in patients with relapsed or refractory IGL undergoing autologous transplantation.
Patients and methods
Patients and eligibilityRecords of all patients who received autologous stem cell transplantation (ASCT) at Vanderbilt University Medical Center or the affiliated Nashville Veteran's Affairs Hospital between September 1986 and June 1998 were reviewed. Patients were included in the study if both the initial and the most recent pathological material prior to transplantation were interpreted as IGL. Following review by two of the authors (WRM, TLM) at the time this report was prepared, patients with low-grade NHL evolving...